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<document ID-CLB-Dataset="24192" ID-DOI="http://dx.doi.org/10.3897/zookeys.908.38477" ID-GBIF-Dataset="1d58692c-3b82-47f1-92e0-402018638be5" ID-PMC="PMC7010846" ID-Pensoft-Pub="1313-2970-908-31" ID-Pensoft-UUID="0720DE19DEF559F18ADFDA6B0C755C3F" ID-PubMed="32076374" ID-ZooBank="2652207C0D98413EB8E94DF7BC67A5E9" ModsDocID="1313-2970-908-31" checkinTime="1580810450118" checkinUser="pensoft" docAuthor="McKamey, Stuart H." docDate="2020" docId="B30D3112CFAD5D6EAB58780BE45541FB" docLanguage="en" docName="ZooKeys 908: 31-37" docOrigin="ZooKeys 908" docSource="http://dx.doi.org/10.3897/zookeys.908.38477" docTitle="Diestostemma bicristata McKamey 2020, sp. nov." docType="treatment" docUuid="457964A9-0AAE-47DB-8A54-0DCB296BC168" docUuidSource="ZooBank" docVersion="6" id="0720DE19DEF559F18ADFDA6B0C755C3F" lastPageNumber="31" masterDocId="0720DE19DEF559F18ADFDA6B0C755C3F" masterDocTitle="Description of a new, unusual species of Diestostemma Amyot &amp; Serville (Hemiptera, Cicadellidae) from Ecuador" masterLastPageNumber="37" masterPageNumber="31" pageNumber="31" updateTime="1732855518221" updateUser="ExternalLinkService">
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<mods:title id="EBBC1386DCC6660A8B92CA3AB072686A">Description of a new, unusual species of Diestostemma Amyot &amp; Serville (Hemiptera, Cicadellidae) from Ecuador</mods:title>
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<mods:name id="CEDBA1F29A271EC10C94499AAE444C66" type="personal">
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<mods:namePart id="8037915B646A13E0FBA7815BAEB16CAD">McKamey, Stuart H.</mods:namePart>
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<mods:part id="3EABD7938A9135FB2164B1916CD3DF2D">
<mods:date id="3D3ED8FB486146CD5FB634213F8EC9C5">2020</mods:date>
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<mods:number id="A45D655BFD006DD3F6941B5D3423E8ED">908</mods:number>
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<mods:url id="2E2A16D45F5BCA9FA47E89BA3109099E">http://dx.doi.org/10.3897/zookeys.908.38477</mods:url>
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<mods:classification id="E381229F1B41E14575B16BEDDFAB9D13">journal article</mods:classification>
<mods:identifier id="6B0C87187C3E18A518E1F86579B6E0EC" type="DOI">http://dx.doi.org/10.3897/zookeys.908.38477</mods:identifier>
<mods:identifier id="2F771D7D26C50A41E3E2DE1410639DED" type="Pensoft-Pub">1313-2970-908-31</mods:identifier>
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<treatment id="B30D3112CFAD5D6EAB58780BE45541FB" ID-GBIF-Taxon="161939218" LSID="urn:lsid:zoobank.org:act:457964A9-0AAE-47DB-8A54-0DCB296BC168" httpUri="http://treatment.plazi.org/id/B30D3112CFAD5D6EAB58780BE45541FB" lastPageNumber="31" pageId="0" pageNumber="31" scope_family="Cicadellidae" scope_order="Hemiptera">
<subSubSection id="70FA6BE4EAF55D71DFFCCFDE45894D1B" pageId="0" pageNumber="31" type="nomenclature">
<paragraph id="9384331666A30352C70AD0A33FD71A21" pageId="0" pageNumber="31">
<taxonomicName id="55766E254E94DA1E5FDE6612E39D665F" ID-CoL="8JRPQ" LSID="B30D3112-CFAD-5D6E-AB58-780BE45541FB" authority="McKamey, 2020" authorityName="McKamey" authorityYear="2020" class="Insecta" family="Cicadellidae" genus="Diestostemma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Diestostemma bicristata" order="Hemiptera" pageId="0" pageNumber="31" phylum="Arthropoda" rank="species" species="bicristata" status="sp. nov.">Diestostemma bicristata</taxonomicName>
<taxonomicNameLabel id="626D8BCBB1A613F16699E79B9957F7C5" pageId="0" pageNumber="31">sp. nov.</taxonomicNameLabel>
<figureCitation id="2D8525FF716824A2932B2DCC144340D4" captionStart="Figures 1–4" captionStartId="F1" captionText="Figures 1 - 4. Diestostemma bicristata, sp. nov., holotype. 1 Habitus in lateral view (right side, image horizontally flipped) 2 habitus in dorsal view (scale = 2 mm) 3 Head and partial thorax, lateral view 4 head, pronotum, and partial pleura, oblique view. Scale bar: 5 mm." figureDoi="10.3897/zookeys.908.38477.figures1-4" httpUri="https://binary.pensoft.net/fig/376083" pageId="0" pageNumber="31">Figs 1-4</figureCitation>
<figureCitation id="2F48343C10F129DFB46F1570F9AC820C" captionStart="Figures 5–12" captionStartId="F2" captionText="Figures 5 - 12. Diestostemma spp. 5 Diestostemma sp., nymph, from Merida, Venezuela (courtesy of D. Takiya) 6 - 12 Diestostemma bicristata, sp. nov., holotype 6 head and partial thorax, ventroanterior view 7 head and pronotum, dorsoanterior view 8 connective and styles, dorsal view 9 pygofer base and subgenital plates, ventral view 10 pygofer and subgenital plate, lateral view 11, 12 aedeagus and basiventral process in lateral and posterior views, respectively (left ramus broken)." figureDoi="10.3897/zookeys.908.38477.figures5-12" httpUri="https://binary.pensoft.net/fig/376084" pageId="0" pageNumber="31">, 5-12</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="78438B984AE3E501E41F34E928BCFB61" pageId="0" pageNumber="31" type="diagnosis">
<paragraph id="DD7DBC7531922F4D621DC0ECE52791CF" pageId="0" pageNumber="31">Diagnosis.</paragraph>
<paragraph id="5296EA8E7962BA7D7F52376171D558FE" pageId="0" pageNumber="31">A small narrow species with a long head, pronotum with two long, weakly converging raised ridges, forewing with extra crossveins but only weakly reticulate. Aedeagus of male in lateral view with gradually recurved basiventral process.</paragraph>
</subSubSection>
<subSubSection id="9E35CE2A6E1A81D28A609E44977AC723" pageId="0" pageNumber="31" type="materials_examined">
<paragraph id="9A15F03C080321AD89059155CE96E73C" pageId="0" pageNumber="31">Material examined.</paragraph>
<paragraph id="5D1DF74CA4D549EF4A3A21AA87838018" pageId="0" pageNumber="31">
<emphasis id="4345E7689FBF05A4067C1A7CF67DD0B6" bold="true" italics="true" pageId="0" pageNumber="31">Holotype</emphasis>
male. &quot;Ecuador. Napo. Km23, | Via Sta. Barbara-La | Bonita. 2400m. | 7-9 April 1986&quot;, &quot;collected by | S.H. McKamey&quot;, and a red &quot;HOLOTYPE |
<taxonomicName id="6F1BDB2295658ACBB410F3030358BFA3" authorityName="Amyot &amp; Audinet-Serville" authorityYear="1843" class="Insecta" family="Cicadellidae" genus="Diestostemma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Diestostemma" order="Hemiptera" pageId="0" pageNumber="31" phylum="Arthropoda" rank="genus">Diestostemma</taxonomicName>
|
<taxonomicName id="2D9B631BBCD688E4C5978E3A5F95BDC6" authorityName="McKamey" authorityYear="2020" class="Insecta" family="Cicadellidae" genus="Diestostemma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="bicristata" order="Hemiptera" pageId="0" pageNumber="31" phylum="Arthropoda" rank="species" species="bicristata">bicristata</taxonomicName>
| McKamey&quot; (USNM). The left forewing and hind wing are damaged.
</paragraph>
</subSubSection>
<subSubSection id="5A80828CB66EC52BCE1BF3F41DF832C0" pageId="0" pageNumber="31" type="description">
<paragraph id="C7FF18C8D1A2C9AFB0DEE7F102B1D8D6" pageId="0" pageNumber="31">Measurements (mm).</paragraph>
<paragraph id="41054298ABA13DA24BEE71C0FFD861CE" pageId="0" pageNumber="31">Total length (from anterior of head to tip of forewings in repose) 13.8; crown length 2.6; transocular distance 2.8; interocular distance 2.0; distance between compound eye and mesal line 1.0; distance between ocellus and mesal line 0.5; pronotal disc maximum width 3.4; pronotal disc maximum length 3.0; forewing length 9.5; length of metathoracic femur 2.4; metathoracic tibia 4.8.</paragraph>
</subSubSection>
<subSubSection id="7712B8EFAD6457D7D5145F7C0E750667" pageId="0" pageNumber="31" type="description">
<paragraph id="F3B2F139AFCE167A960A34D6AEBF07E1" pageId="0" pageNumber="31">Description of the male holotype.</paragraph>
<paragraph id="E38556E2146A89F0A6CDF3C5DF9BBCEF" pageId="0" pageNumber="31">
Body (Figs
<figureCitation id="854D2DAB3A45FAA227C685CCEE89FB23" captionStart="Figures 1–4" captionStartId="F1" captionText="Figures 1 - 4. Diestostemma bicristata, sp. nov., holotype. 1 Habitus in lateral view (right side, image horizontally flipped) 2 habitus in dorsal view (scale = 2 mm) 3 Head and partial thorax, lateral view 4 head, pronotum, and partial pleura, oblique view. Scale bar: 5 mm." figureDoi="10.3897/zookeys.908.38477.figures1-4" httpUri="https://binary.pensoft.net/fig/376083" pageId="0" pageNumber="31">1</figureCitation>
,
<figureCitation id="BCF83658905FCD62415EC45AB033FAB8" captionStart="Figures 1–4" captionStartId="F1" captionText="Figures 1 - 4. Diestostemma bicristata, sp. nov., holotype. 1 Habitus in lateral view (right side, image horizontally flipped) 2 habitus in dorsal view (scale = 2 mm) 3 Head and partial thorax, lateral view 4 head, pronotum, and partial pleura, oblique view. Scale bar: 5 mm." figureDoi="10.3897/zookeys.908.38477.figures1-4" httpUri="https://binary.pensoft.net/fig/376083" pageId="0" pageNumber="31">2</figureCitation>
) lacking conspicuous, white powdery brochosomal coat when collected. Head (Figs
<figureCitation id="8FD72B5C6E85008087E69F18CCF3ECDA" captionStart="Figures 1–4" captionStartId="F1" captionText="Figures 1 - 4. Diestostemma bicristata, sp. nov., holotype. 1 Habitus in lateral view (right side, image horizontally flipped) 2 habitus in dorsal view (scale = 2 mm) 3 Head and partial thorax, lateral view 4 head, pronotum, and partial pleura, oblique view. Scale bar: 5 mm." figureDoi="10.3897/zookeys.908.38477.figures1-4" httpUri="https://binary.pensoft.net/fig/376083" pageId="0" pageNumber="31">3</figureCitation>
,
<figureCitation id="FC996F736C9A99C1A3DB274010139ED2" captionStart="Figures 1–4" captionStartId="F1" captionText="Figures 1 - 4. Diestostemma bicristata, sp. nov., holotype. 1 Habitus in lateral view (right side, image horizontally flipped) 2 habitus in dorsal view (scale = 2 mm) 3 Head and partial thorax, lateral view 4 head, pronotum, and partial pleura, oblique view. Scale bar: 5 mm." figureDoi="10.3897/zookeys.908.38477.figures1-4" httpUri="https://binary.pensoft.net/fig/376083" pageId="0" pageNumber="31">4</figureCitation>
,
<figureCitation id="B69AD46727A263C447F55746139DAEB2" captionStart="Figures 5–12" captionStartId="F2" captionText="Figures 5 - 12. Diestostemma spp. 5 Diestostemma sp., nymph, from Merida, Venezuela (courtesy of D. Takiya) 6 - 12 Diestostemma bicristata, sp. nov., holotype 6 head and partial thorax, ventroanterior view 7 head and pronotum, dorsoanterior view 8 connective and styles, dorsal view 9 pygofer base and subgenital plates, ventral view 10 pygofer and subgenital plate, lateral view 11, 12 aedeagus and basiventral process in lateral and posterior views, respectively (left ramus broken)." figureDoi="10.3897/zookeys.908.38477.figures5-12" httpUri="https://binary.pensoft.net/fig/376084" pageId="0" pageNumber="31">6</figureCitation>
,
<figureCitation id="C9A5345F4306E7948F80466A35F0086C" captionStart="Figures 5–12" captionStartId="F2" captionText="Figures 5 - 12. Diestostemma spp. 5 Diestostemma sp., nymph, from Merida, Venezuela (courtesy of D. Takiya) 6 - 12 Diestostemma bicristata, sp. nov., holotype 6 head and partial thorax, ventroanterior view 7 head and pronotum, dorsoanterior view 8 connective and styles, dorsal view 9 pygofer base and subgenital plates, ventral view 10 pygofer and subgenital plate, lateral view 11, 12 aedeagus and basiventral process in lateral and posterior views, respectively (left ramus broken)." figureDoi="10.3897/zookeys.908.38477.figures5-12" httpUri="https://binary.pensoft.net/fig/376084" pageId="0" pageNumber="31">7</figureCitation>
). Crown maximum length 0.9 transocular distance and longer than interocular distance (ratio of 1.3) in dorsal view; anterior margin rounded with small apical, scarlike concavity (Fig.
<figureCitation id="1051B488FBF0A566D8F9180081829C69" captionStart="Figures 5–12" captionStartId="F2" captionText="Figures 5 - 12. Diestostemma spp. 5 Diestostemma sp., nymph, from Merida, Venezuela (courtesy of D. Takiya) 6 - 12 Diestostemma bicristata, sp. nov., holotype 6 head and partial thorax, ventroanterior view 7 head and pronotum, dorsoanterior view 8 connective and styles, dorsal view 9 pygofer base and subgenital plates, ventral view 10 pygofer and subgenital plate, lateral view 11, 12 aedeagus and basiventral process in lateral and posterior views, respectively (left ramus broken)." figureDoi="10.3897/zookeys.908.38477.figures5-12" httpUri="https://binary.pensoft.net/fig/376084" pageId="0" pageNumber="31">7</figureCitation>
); epicranial suture indistinct; frons with deep muscle impressions laterally and planar medially, dorsal surface planar, weakly upturned distally; frontogenal suture extending onto crown to ocellar level. Ocellus located at level of anterior limit of compound eye, distinctly closer to eye than mesal line (ratio of distances between ocellus and eye with eye to mesal line of 0. 39). Epistomal suture indistinct. Clypeus anterior margin in lateral view at level of frons.
</paragraph>
<caption id="A662D59DADD4E2C8327BDAD290E40AE3" doi="10.3897/zookeys.908.38477.figures1-4" httpUri="https://binary.pensoft.net/fig/376083" pageId="0" pageNumber="31" start="Figures 1–4" startId="F1">
<paragraph id="B472EBE6D3BE2DC911EB5E8512738314" pageId="0" pageNumber="31">
<emphasis id="15146A153C61D6C1583377FD8A3A80DA" bold="true" pageId="0" pageNumber="31">Figures 1-4.</emphasis>
<taxonomicName id="9A99CFDDE4115E0BA7C6B3487BD6E358" authorityName="McKamey" authorityYear="2020" class="Insecta" family="Cicadellidae" genus="Diestostemma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Diestostemma bicristata" order="Hemiptera" pageId="0" pageNumber="31" phylum="Arthropoda" rank="species" species="bicristata">
<emphasis id="762CF6A8BED274F588E324B7CEABDD99" italics="true" pageId="0" pageNumber="31">Diestostemma bicristata</emphasis>
</taxonomicName>
, sp. nov., holotype.
<emphasis id="BAA209EC095DA2D907BBFF5DD4A8DC20" bold="true" pageId="0" pageNumber="31">1</emphasis>
Habitus in lateral view (right side, image horizontally flipped)
<emphasis id="DAACAD675DCA6262F878621F4805F0EB" bold="true" pageId="0" pageNumber="31">2</emphasis>
habitus in dorsal view (scale = 2 mm)
<emphasis id="5ABADA1AEFB6BA628D134DCD3E9C4678" bold="true" pageId="0" pageNumber="31">3</emphasis>
Head and partial thorax, lateral view
<emphasis id="1B345A7BFFB404C4D3DBFF41C28AC297" bold="true" pageId="0" pageNumber="31">4</emphasis>
head, pronotum, and partial pleura, oblique view. Scale bar: 5 mm.
</paragraph>
</caption>
<paragraph id="6C8D5DC0743FE5E1F1229D1D935859C2" pageId="0" pageNumber="31">
Thorax (Figs
<figureCitation id="4F0FBA3019633809B7A8C0D96663D06E" captionStart="Figures 1–4" captionStartId="F1" captionText="Figures 1 - 4. Diestostemma bicristata, sp. nov., holotype. 1 Habitus in lateral view (right side, image horizontally flipped) 2 habitus in dorsal view (scale = 2 mm) 3 Head and partial thorax, lateral view 4 head, pronotum, and partial pleura, oblique view. Scale bar: 5 mm." figureDoi="10.3897/zookeys.908.38477.figures1-4" httpUri="https://binary.pensoft.net/fig/376083" pageId="0" pageNumber="31">1-4</figureCitation>
,
<figureCitation id="DBA1ACB11CC100A98E6E53559C7449FF" captionStart="Figures 5–12" captionStartId="F2" captionText="Figures 5 - 12. Diestostemma spp. 5 Diestostemma sp., nymph, from Merida, Venezuela (courtesy of D. Takiya) 6 - 12 Diestostemma bicristata, sp. nov., holotype 6 head and partial thorax, ventroanterior view 7 head and pronotum, dorsoanterior view 8 connective and styles, dorsal view 9 pygofer base and subgenital plates, ventral view 10 pygofer and subgenital plate, lateral view 11, 12 aedeagus and basiventral process in lateral and posterior views, respectively (left ramus broken)." figureDoi="10.3897/zookeys.908.38477.figures5-12" httpUri="https://binary.pensoft.net/fig/376084" pageId="0" pageNumber="31">6</figureCitation>
). Pronotum maximum width at posterolateral angles 1.1 times wider than transocular distance; maximum length 1.2 times longer than crown length; lateral margins convergent anteriorly; disc sculptured dorsally by punctures and callosities, punctures numerous and closer to each other in posterior half; pair of small transverse anterolateral pits just posterior to anterior margin, followed by smooth polished elevated area with pair of low, parallel median ridges; anteromesal area with elevated polished areas (callosities); posterior two-thirds developed into pair of ridges, gradually higher and more separated posteriorly (Figs
<figureCitation id="EE9F5411C8747FB012763064CDCDC04B" captionStart="Figures 1–4" captionStartId="F1" captionText="Figures 1 - 4. Diestostemma bicristata, sp. nov., holotype. 1 Habitus in lateral view (right side, image horizontally flipped) 2 habitus in dorsal view (scale = 2 mm) 3 Head and partial thorax, lateral view 4 head, pronotum, and partial pleura, oblique view. Scale bar: 5 mm." figureDoi="10.3897/zookeys.908.38477.figures1-4" httpUri="https://binary.pensoft.net/fig/376083" pageId="0" pageNumber="31">4</figureCitation>
,
<figureCitation id="92EAC2BA86A700465C60253DC8EA38B8" captionStart="Figures 5–12" captionStartId="F2" captionText="Figures 5 - 12. Diestostemma spp. 5 Diestostemma sp., nymph, from Merida, Venezuela (courtesy of D. Takiya) 6 - 12 Diestostemma bicristata, sp. nov., holotype 6 head and partial thorax, ventroanterior view 7 head and pronotum, dorsoanterior view 8 connective and styles, dorsal view 9 pygofer base and subgenital plates, ventral view 10 pygofer and subgenital plate, lateral view 11, 12 aedeagus and basiventral process in lateral and posterior views, respectively (left ramus broken)." figureDoi="10.3897/zookeys.908.38477.figures5-12" httpUri="https://binary.pensoft.net/fig/376084" pageId="0" pageNumber="31">6</figureCitation>
); posterior margin sinuous with widened W-shaped outline; dorsolateral carina complete; lateral lobe of pronotum punctate, with median ridge, posterior margin projected into short thumb-like process. Mesonotum not punctate; scutellum dorsally smooth, lacking longitudinal carina; high and bluntly rounded until abrupt declivity just before acuminate apex. Forewing (Figs
<figureCitation id="78AF65B6E6E6301A32F4C5CB03D04E70" captionStart="Figures 1–4" captionStartId="F1" captionText="Figures 1 - 4. Diestostemma bicristata, sp. nov., holotype. 1 Habitus in lateral view (right side, image horizontally flipped) 2 habitus in dorsal view (scale = 2 mm) 3 Head and partial thorax, lateral view 4 head, pronotum, and partial pleura, oblique view. Scale bar: 5 mm." figureDoi="10.3897/zookeys.908.38477.figures1-4" httpUri="https://binary.pensoft.net/fig/376083" pageId="0" pageNumber="31">1</figureCitation>
,
<figureCitation id="F8A5AC49B56E68BBBCEA45450AA77334" captionStart="Figures 1–4" captionStartId="F1" captionText="Figures 1 - 4. Diestostemma bicristata, sp. nov., holotype. 1 Habitus in lateral view (right side, image horizontally flipped) 2 habitus in dorsal view (scale = 2 mm) 3 Head and partial thorax, lateral view 4 head, pronotum, and partial pleura, oblique view. Scale bar: 5 mm." figureDoi="10.3897/zookeys.908.38477.figures1-4" httpUri="https://binary.pensoft.net/fig/376083" pageId="0" pageNumber="31">2</figureCitation>
) coriaceous; surface strongly punctate, punctures minute distally; venation sclerotized and strongly elevated throughout; basal two-thirds with extra crossveins, distal third weakly reticulate. Hind wing membranous and lacking conspicuous brochosomes. Metathoracic leg with femoral setal formula 2:0:0:0 (AD1 and PD1); tibia with anteroventral row (AV) complete with cucullate (sensu
<bibRefCitation id="C1B64F85340C84C375A0F68C29E91AC9" author="Deitz, LL" journalOrPublisher="Revista Brasileira de Zoologia" pageId="0" pageNumber="31" refId="B2" refString="Deitz, LL, 1975. Classification of the higher categories of the New World treehoppers (Homoptera: Membracidae). North Carolina Agriculture Experiment Station Technical Bulletin No. 225. [i-iv]+177 pp." title="Classification of the higher categories of the New World treehoppers (Homoptera: Membracidae). North Carolina Agriculture Experiment Station Technical Bulletin No. 225. [i-iv] + 177 pp." year="1975">Deitz 1975</bibRefCitation>
) macrosetae; anterodorsal (AD) and posteroventral (PV) rows complete with uniform non-cucullate macrosetae; posterodorsal (PD) row with smaller, more closely spaced, uniform, non-cucullate macrosetae; ratio of length of each individual tarsomere by total tarsus length (excluding pretarsus) equal to 0.5, 0.4 and 0.3, respectively.
</paragraph>
<caption id="DBB2F076DA33E7108047A025119D8D15" doi="10.3897/zookeys.908.38477.figures5-12" httpUri="https://binary.pensoft.net/fig/376084" pageId="0" pageNumber="31" start="Figures 5–12" startId="F2">
<paragraph id="5448558C2B5490E8418159306D86DF0B" pageId="0" pageNumber="31">
<emphasis id="CB81A511C1350813E46C6F7FACC7F61F" bold="true" pageId="0" pageNumber="31">Figures 5-12.</emphasis>
<taxonomicName id="E34CCAF8729CAD9273696DA94BF6F2FA" authorityName="Amyot &amp; Audinet-Serville" authorityYear="1843" class="Insecta" family="Cicadellidae" genus="Diestostemma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Diestostemma" order="Hemiptera" pageId="0" pageNumber="31" phylum="Arthropoda" rank="genus">
<emphasis id="E394B9D9E5F6D6CDA86026C5AF0C50ED" italics="true" pageId="0" pageNumber="31">Diestostemma</emphasis>
</taxonomicName>
spp.
<emphasis id="B21FED9B930C4B9D28A0B00DF8420E8E" bold="true" pageId="0" pageNumber="31">5</emphasis>
<taxonomicName id="30259CC22178C63DAEF2D4AE3752F05C" authorityName="Amyot &amp; Audinet-Serville" authorityYear="1843" class="Insecta" family="Cicadellidae" genus="Diestostemma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Diestostemma" order="Hemiptera" pageId="0" pageNumber="31" phylum="Arthropoda" rank="genus">
<emphasis id="270E6DBB1C53741CCEF3AB508E8B2678" italics="true" pageId="0" pageNumber="31">Diestostemma</emphasis>
</taxonomicName>
sp., nymph, from
<normalizedToken id="28C881838F49854489B99CA1302ACCF8" originalValue="Mérida">Merida</normalizedToken>
, Venezuela (courtesy of D. Takiya)
<emphasis id="5293B4582EF22F6E0E95E9B2A885B1F8" bold="true" pageId="0" pageNumber="31">6-12</emphasis>
<taxonomicName id="DF0997A28D8D51503F0678A55DAA16FF" authorityName="McKamey" authorityYear="2020" class="Insecta" family="Cicadellidae" genus="Diestostemma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Diestostemma bicristata" order="Hemiptera" pageId="0" pageNumber="31" phylum="Arthropoda" rank="species" species="bicristata">
<emphasis id="ABE67D397CB6448969A5F673E252F033" italics="true" pageId="0" pageNumber="31">Diestostemma bicristata</emphasis>
</taxonomicName>
, sp. nov., holotype
<emphasis id="CD08BC710DECF072ACAE4650394C9914" bold="true" pageId="0" pageNumber="31">6</emphasis>
head and partial thorax, ventroanterior view
<emphasis id="03AD4A324634C0E3B5B8E86D37AE320E" bold="true" pageId="0" pageNumber="31">7</emphasis>
head and pronotum, dorsoanterior view
<emphasis id="D714D7C869BC58328AEBBB12E8941B7D" bold="true" pageId="0" pageNumber="31">8</emphasis>
connective and styles, dorsal view
<emphasis id="FCEF6512063BA1B94780F1624725EA2B" bold="true" pageId="0" pageNumber="31">9</emphasis>
pygofer base and subgenital plates, ventral view
<emphasis id="B3C28D43DEC860C3CD0B39B2A0CCE05A" bold="true" pageId="0" pageNumber="31">10</emphasis>
pygofer and subgenital plate, lateral view
<emphasis id="21BED4E70A8841003A5CF46A955AB871" bold="true" pageId="0" pageNumber="31">11, 12</emphasis>
aedeagus and basiventral process in lateral and posterior views, respectively (left ramus broken).
</paragraph>
</caption>
<paragraph id="99D4EEFA0D0A9EB160BC4E79108CD8EB" pageId="0" pageNumber="31">Coloration. Head and thorax including legs pale brown except median of frons orange and forewings dark brown and hind wings smoky translucent. Abdomen dark brown.</paragraph>
<paragraph id="25956A330695681887E951BCB5E5A91C" pageId="0" pageNumber="31">
Male terminalia. Pygofer (Fig.
<figureCitation id="10016C05D9ED67F0C25735E1AAF750B7" captionStart="Figures 5–12" captionStartId="F2" captionText="Figures 5 - 12. Diestostemma spp. 5 Diestostemma sp., nymph, from Merida, Venezuela (courtesy of D. Takiya) 6 - 12 Diestostemma bicristata, sp. nov., holotype 6 head and partial thorax, ventroanterior view 7 head and pronotum, dorsoanterior view 8 connective and styles, dorsal view 9 pygofer base and subgenital plates, ventral view 10 pygofer and subgenital plate, lateral view 11, 12 aedeagus and basiventral process in lateral and posterior views, respectively (left ramus broken)." figureDoi="10.3897/zookeys.908.38477.figures5-12" httpUri="https://binary.pensoft.net/fig/376084" pageId="0" pageNumber="31">10</figureCitation>
) dorsal margin convex, projecting dorsoposteriorly; inner surface without lobe in ventral view; posterior margin slightly concave at middle; microsetae distributed only on posterior lobe surface. Valve, in ventral view, transverse, subrectangular; fused laterally to pygofer lobe; articulated to subgenital plate. Subgenital plate (Fig.
<figureCitation id="F2629AFD8C6DBEE7ECA53C9B479FC62F" captionStart="Figures 5–12" captionStartId="F2" captionText="Figures 5 - 12. Diestostemma spp. 5 Diestostemma sp., nymph, from Merida, Venezuela (courtesy of D. Takiya) 6 - 12 Diestostemma bicristata, sp. nov., holotype 6 head and partial thorax, ventroanterior view 7 head and pronotum, dorsoanterior view 8 connective and styles, dorsal view 9 pygofer base and subgenital plates, ventral view 10 pygofer and subgenital plate, lateral view 11, 12 aedeagus and basiventral process in lateral and posterior views, respectively (left ramus broken)." figureDoi="10.3897/zookeys.908.38477.figures5-12" httpUri="https://binary.pensoft.net/fig/376084" pageId="0" pageNumber="31">9</figureCitation>
) 1.4 times longer than wide at base in ventral view; dorsal surface with tooth-like process near outer margin, associated with distal portion of style; posterior margin broadly rounded; microsetae distributed throughout ventral surface, tuft of longer setae at dorsoposterior angle. Style (Fig.
<figureCitation id="F1BA1E71345F506334572C37F6C1B261" captionStart="Figures 5–12" captionStartId="F2" captionText="Figures 5 - 12. Diestostemma spp. 5 Diestostemma sp., nymph, from Merida, Venezuela (courtesy of D. Takiya) 6 - 12 Diestostemma bicristata, sp. nov., holotype 6 head and partial thorax, ventroanterior view 7 head and pronotum, dorsoanterior view 8 connective and styles, dorsal view 9 pygofer base and subgenital plates, ventral view 10 pygofer and subgenital plate, lateral view 11, 12 aedeagus and basiventral process in lateral and posterior views, respectively (left ramus broken)." figureDoi="10.3897/zookeys.908.38477.figures5-12" httpUri="https://binary.pensoft.net/fig/376084" pageId="0" pageNumber="31">8</figureCitation>
), in dorsal view, with preapical lobe; apex of apophysis weakly acute, directed posteriorly; ventral margin without preapical dentiform processes. Connective (Fig.
<figureCitation id="707CA5B080FE6D10AB290BEE7D845A1B" captionStart="Figures 5–12" captionStartId="F2" captionText="Figures 5 - 12. Diestostemma spp. 5 Diestostemma sp., nymph, from Merida, Venezuela (courtesy of D. Takiya) 6 - 12 Diestostemma bicristata, sp. nov., holotype 6 head and partial thorax, ventroanterior view 7 head and pronotum, dorsoanterior view 8 connective and styles, dorsal view 9 pygofer base and subgenital plates, ventral view 10 pygofer and subgenital plate, lateral view 11, 12 aedeagus and basiventral process in lateral and posterior views, respectively (left ramus broken)." figureDoi="10.3897/zookeys.908.38477.figures5-12" httpUri="https://binary.pensoft.net/fig/376084" pageId="0" pageNumber="31">8</figureCitation>
) 3.9 times longer than maximum width, sublinear posteriorly, narrowing anteriorly with anterior arms weakly separated in dorsal view; stalk much longer than arms. Aedeagus (Figs
<figureCitation id="7588BD3446981400FDA41D75F22F706A" captionStart="Figures 5–12" captionStartId="F2" captionText="Figures 5 - 12. Diestostemma spp. 5 Diestostemma sp., nymph, from Merida, Venezuela (courtesy of D. Takiya) 6 - 12 Diestostemma bicristata, sp. nov., holotype 6 head and partial thorax, ventroanterior view 7 head and pronotum, dorsoanterior view 8 connective and styles, dorsal view 9 pygofer base and subgenital plates, ventral view 10 pygofer and subgenital plate, lateral view 11, 12 aedeagus and basiventral process in lateral and posterior views, respectively (left ramus broken)." figureDoi="10.3897/zookeys.908.38477.figures5-12" httpUri="https://binary.pensoft.net/fig/376084" pageId="0" pageNumber="31">11</figureCitation>
,
<figureCitation id="6EA7546D809BB950DCBD2FAAE70C6ECF" captionStart="Figures 5–12" captionStartId="F2" captionText="Figures 5 - 12. Diestostemma spp. 5 Diestostemma sp., nymph, from Merida, Venezuela (courtesy of D. Takiya) 6 - 12 Diestostemma bicristata, sp. nov., holotype 6 head and partial thorax, ventroanterior view 7 head and pronotum, dorsoanterior view 8 connective and styles, dorsal view 9 pygofer base and subgenital plates, ventral view 10 pygofer and subgenital plate, lateral view 11, 12 aedeagus and basiventral process in lateral and posterior views, respectively (left ramus broken)." figureDoi="10.3897/zookeys.908.38477.figures5-12" httpUri="https://binary.pensoft.net/fig/376084" pageId="0" pageNumber="31">12</figureCitation>
) strongly sclerotized; basally wide, narrowing distally into cylindrical, curved, sickle-shaped shaft in lateral view; shaft posterodistal portion membranous; basiventral process bulbous basally, abruptly constricted adjacent to where aedeagal shaft narrows, extending as narrow single process for half of remaining length before bifurcating and expanding into pair of long needle-like rami; rami of basiventral processes curved anterolaterally, distally divergent in posterior view (left fork broken in holotype).
</paragraph>
<paragraph id="C1FB3B2EEA9D9FA50BAC4E6BB10AD2C5" pageId="0" pageNumber="31">Female unknown.</paragraph>
</subSubSection>
<subSubSection id="D72B89EAA8AE77FC4C4083F03CF46A26" pageId="0" pageNumber="31" type="distribution">
<paragraph id="DE2D5C25766929879558D826997EAA66" pageId="0" pageNumber="31">Distribution.</paragraph>
<paragraph id="9F0600DA7BA859A9185FFAFE377CE8BD" pageId="0" pageNumber="31">Known only from the type locality at the Kilometer 23 post along the road between Santa Barbara and La Bonita, at 2400 m elevation, in Napo Province, Ecuador. Biology and ecology unknown.</paragraph>
</subSubSection>
<subSubSection id="0ADBC8C734D38A469BCE0E9DE4FB2BA0" pageId="0" pageNumber="31" type="etymology">
<paragraph id="1C2BE6C8D41C6AF09A2AD6DDB321382E" pageId="0" pageNumber="31">Etymology.</paragraph>
<paragraph id="D1116AB7202C47AD66082BA149FE7074" pageId="0" pageNumber="31">
The specific name is feminine and based on the Latin &quot;
<emphasis id="AFDA3B8A1C13565D4CF0EBD0A8BB11A9" italics="true" pageId="0" pageNumber="31">crista</emphasis>
,&quot; for crest, in reference to its unique double-crested pronotum.
</paragraph>
</subSubSection>
<subSubSection id="53661994B38102085446D711F3D063C0" pageId="0" pageNumber="31" type="discussion">
<paragraph id="F2061E283D8F397DB47DA48DBE2175FA" pageId="0" pageNumber="31">Discussion.</paragraph>
<paragraph id="AED8E208E7A5352DA84B65552D421652" pageId="0" pageNumber="31">
The new species is externally most similar to
<taxonomicName id="782A6FE1B0E17E201F72E5176351BEDD" lsidName="D. truncatipenne" pageId="0" pageNumber="31" rank="species" species="truncatipenne">
<emphasis id="CAD87052014A1E147E9CC1377433CBEA" italics="true" pageId="0" pageNumber="31">D. truncatipenne</emphasis>
</taxonomicName>
Schmidt, which also has an extended vertex and strongly raised forewing veins that are not very reticulate compared to most species of the genus;
<taxonomicName id="5EF0A0261C3875BD57E09C6303C17E35" lsidName="D. truncatipenne" pageId="0" pageNumber="31" rank="species" species="truncatipenne">
<emphasis id="358D718C0FBCCBF3546C6F3FD793B4E1" italics="true" pageId="0" pageNumber="31">D. truncatipenne</emphasis>
</taxonomicName>
has been recorded only from Peru. The aedeagus is most similar to
<taxonomicName id="0F7BB430F217438772A1EB5852C83A35" lsidName="D. bituberculatum" pageId="0" pageNumber="31" rank="species" species="bituberculatum">
<emphasis id="34D5EF0581D864E37963D2FBEC7FB459" italics="true" pageId="0" pageNumber="31">D. bituberculatum</emphasis>
</taxonomicName>
, which has more abruptly curved basiventral processes;
<taxonomicName id="B13A0F5C91ACF221DEAB405E9B5AB517" lsidName="D. bituberculatum" pageId="0" pageNumber="31" rank="species" species="bituberculatum">
<emphasis id="35544DF34622DDCC9298D7939D35E4EB" italics="true" pageId="0" pageNumber="31">D. bituberculatum</emphasis>
</taxonomicName>
is recorded from Brazil, French Guiana, and Guyana.
</paragraph>
</subSubSection>
</treatment>
</document>
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