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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.623.10052" ID-GBIF-Dataset="04872ae6-31e8-4723-adad-0c5a3820f089" ID-PMC="PMC5096397" ID-Pensoft-Pub="1313-2970-623-75" ID-PubMed="27843389" ID-ZBK="14178AC136274E4096973D9529366D7F" ModsDocAuthor="" ModsDocDate="2016" ModsDocID="1313-2970-623-75" ModsDocOrigin="ZooKeys 623" ModsDocTitle="Hydraena Kugelann, 1794 (Coleoptera, Hydraenidae) from the Seychelles, Indian Ocean, with description of a new species" checkinTime="1476240906501" checkinUser="pensoft" docAuthor="Jaech, Manfred A. &amp; Delgado, Juan A." docDate="2016" docId="7571F23DD4529E1A843C78996C76C34D" docLanguage="en" docName="ZooKeys 623: 75-88" docOrigin="ZooKeys 623" docSource="http://dx.doi.org/10.3897/zookeys.623.10052" docTitle="Hydraena (Hydraenopsis) matyoti Jaech &amp; Delgado, sp. n." docType="treatment" docUuid="510E6CEA-96B4-484F-939C-ED99D955C58E" docUuidSource="ZooBank" docVersion="5" lastPageNumber="83" masterDocId="FFEEFFE9FFDFFFDEFFE092283E41FF9C" masterDocTitle="Hydraena Kugelann, 1794 (Coleoptera, Hydraenidae) from the Seychelles, Indian Ocean, with description of a new species" masterLastPageNumber="88" masterPageNumber="75" pageNumber="77" updateTime="1668163617099" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Hydraena Kugelann, 1794 (Coleoptera, Hydraenidae) from the Seychelles, Indian Ocean, with description of a new species</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Jaech, Manfred A.</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Delgado, Juan A.</mods:namePart>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>ZooKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2016</mods:date>
<mods:detail type="volume">
<mods:number>623</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>75</mods:start>
<mods:end>88</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/zookeys.623.10052</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.623.10052</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-623-75</mods:identifier>
<mods:identifier type="ZBK">14178AC136274E4096973D9529366D7F</mods:identifier>
<mods:identifier type="ZooBank">14178AC136274E4096973D9529366D7F</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="127900133" LSID="urn:lsid:zoobank.org:act:510E6CEA-96B4-484F-939C-ED99D955C58E" httpUri="http://treatment.plazi.org/id/7571F23DD4529E1A843C78996C76C34D" lastPageId="8" lastPageNumber="83" pageId="2" pageNumber="77">
<subSubSection pageId="2" pageNumber="77" type="multiple">
<paragraph pageId="2" pageNumber="77">Taxon classification Animalia Coleoptera Hydraenidae</paragraph>
</subSubSection>
<subSubSection pageId="2" pageNumber="77" type="nomenclature">
<paragraph pageId="2" pageNumber="77">
<taxonomicName LSID="http://zoobank.org/510E6CEA-96B4-484F-939C-ED99D955C58E" authority="Jaech &amp; Delgado" class="Insecta" family="Hydraenidae" genus="Hydraena" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydraena (Hydraenopsis) matyoti" order="Coleoptera" pageId="2" pageNumber="77" phylum="Arthropoda" rank="species" species="matyoti" subGenus="Hydraenopsis">
Hydraena (Hydraenopsis) matyoti
<normalizedToken originalValue="Jäch">Jaech</normalizedToken>
&amp; Delgado
</taxonomicName>
<taxonomicNameLabel pageId="2" pageNumber="77">sp. n.</taxonomicNameLabel>
Figs 2, 12-14, 15-19
</paragraph>
</subSubSection>
<subSubSection pageId="3" pageNumber="78" type="reference_group">
<paragraph pageId="3" pageNumber="78">
<taxonomicName class="Insecta" family="Hydraenidae" genus="Hydraena" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydraena (Hydraenopsis) mahensis" order="Coleoptera" pageId="3" pageNumber="78" phylum="Arthropoda" rank="species" species="mahensis" subGenus="Hydraenopsis">
<pageBreakToken pageId="3" pageNumber="78" start="start">Hydraena</pageBreakToken>
(Hydraenopsis) mahensis
</taxonomicName>
:
<normalizedToken originalValue="Jäch">Jaech</normalizedToken>
&amp; Madl 2009: 19 (partim), 29.
</paragraph>
</subSubSection>
<subSubSection pageId="3" pageNumber="78" type="type locality">
<paragraph pageId="3" pageNumber="78">Type locality.</paragraph>
<paragraph pageId="3" pageNumber="78">
Small puddle on Sans Souci Hiking Trail, northern
<normalizedToken originalValue="Mahé">Mahe</normalizedToken>
, Seychelles.
</paragraph>
</subSubSection>
<subSubSection pageId="4" pageNumber="79" type="type material">
<paragraph pageId="4" pageNumber="79">
<pageBreakToken pageId="4" pageNumber="79" start="start">Type</pageBreakToken>
material.
</paragraph>
<paragraph pageId="4" pageNumber="79">
Holotype ♂ (NMW), glued on pinned card, genitalia extracted and glued on same card. Label data: &quot;SEYCHELLES:
<normalizedToken originalValue="Mahé">Mahe</normalizedToken>
Sans Souci, XI. 1994, leg.E.Heiss&quot;. Paratypes: 1 ♀ (NMW): same label data as holotype; 1 ♂ (NMW): &quot;SEYCHELLES:
<normalizedToken originalValue="Mahé">Mahe</normalizedToken>
Morne Seychellois NP Casse Dent, trail 25.03.2011 leg. M.Madl&quot;; 2 ♀♀ (NMW): &quot;SEYCHELLEN,
<normalizedToken originalValue="Mahé">Mahe</normalizedToken>
1996 Morne Seychellois NP Congo Rouge 600-800m 25. V. leg.
<normalizedToken originalValue="Schödl">Schoedl</normalizedToken>
(12c)&quot;; 1 ♀ (NMW): &quot;Seychelles, Silhouette, Jardin Marron [field name], 400m, 12. 4. 2007, leg. Wewalka (12)&quot;.
</paragraph>
</subSubSection>
<subSubSection lastPageId="8" lastPageNumber="83" pageId="4" pageNumber="79" type="description">
<paragraph pageId="4" pageNumber="79">Description.</paragraph>
<paragraph pageId="4" pageNumber="79">Habitus as in Fig. 2. Body length (without abdomen): 1.56-1.70 mm. Dorsum reddish brown, lateral parts of frons (near eyes) more or less black; maxillary palpi yellowish, apical tip paled.</paragraph>
<caption pageId="4" pageNumber="79">
<paragraph pageId="4" pageNumber="79">
Figure 2. Habitus of
<taxonomicName class="Insecta" family="Hydraenidae" genus="Hydraena" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydraena matyoti" order="Coleoptera" pageId="4" pageNumber="79" phylum="Arthropoda" rank="species" species="matyoti">Hydraena matyoti</taxonomicName>
<normalizedToken originalValue="Jäch">Jaech</normalizedToken>
&amp; Delgado, sp. n., holotype, male. Scale bar: 0.5 mm.
</paragraph>
</caption>
<paragraph lastPageId="5" lastPageNumber="80" pageId="4" pageNumber="79">
Labrum deeply excised anteriorly; anterior angles rounded. Middle of clypeus sparsely punctate, usually glabrous, lateral parts usually micropunctate and mat. Fronto-clypeal suture straight or feebly arcuate, slightly impressed. Frons moderately
<pageBreakToken pageId="5" pageNumber="80" start="start">densely</pageBreakToken>
(middle) or more densely and sometimes even rugosely (laterally) punctate, interstices shining; interocular grooves shallow. Eyes large, protruding, more than 30 facets visible in dorsal view.
</paragraph>
<paragraph pageId="5" pageNumber="80">Pronotum distinctly wider than long, widest near middle; anterior margin concave; anterior angles rounded; lateral margin very slightly concave in anterior and posterior half; lateral rim denticulate; surface moderately densely to densely punctate, but disc sometimes only sparsely punctate; anterior discal foveae obsolete, posterior discal foveae hardly noticeable.</paragraph>
<paragraph lastPageId="6" lastPageNumber="81" pageId="5" pageNumber="80">
Elytra elongately oval; with about nine rows of punctures between suture and shoulder; punctures small, but rather deeply impressed, usually arranged in regular,
<pageBreakToken pageId="6" pageNumber="81" start="start">usually</pageBreakToken>
not impressed lines; intervals sometimes convex, glabrous; explanate margin of elytra comparably wide, abruptly attenuate subapically, slightly to distinctly serrate posteriorly. Elytral apices usually separately rounded.
</paragraph>
<paragraph pageId="6" pageNumber="81">Foretibia and metatibia sexually dimorphic.</paragraph>
<paragraph pageId="6" pageNumber="81">Mesoventral process parallel-sided, apically truncate, width sexually dimorphic. Metaventrite moderately deeply impressed between glabrous metaventral plaques, the latter reduced to very thin glabrous elevated short, widely separated streaks.</paragraph>
<paragraph pageId="6" pageNumber="81">Male terminal sternite and spiculum (Fig. 15): Sternite not firmly connected with spiculum, subtrapezoidal, approximately as wide as long, slightly asymmetrical; base with very small lateral projections.</paragraph>
<paragraph pageId="6" pageNumber="81">
Aedeagus (Figs 12-14): Total length: 400
<normalizedToken originalValue="µm">µm</normalizedToken>
. Main piece elongate, in apical half divided into a ventral and a dorsal branch, ventral branch with characteristic claw-like apex; single dorsal seta inserted on dorsal branch near base of distal lobe; phallobase strongly asymmetrical, closed proximally. Distal lobe inserted on dorsal branch of main piece; moderately large, amorphic, partly distinctly hyaline. Right paramere long and slender, with rows of subapical setae; articulately connected with main piece. Left paramere absent.The aedeagus can be distinguished from the aedeagi of
<taxonomicName class="Insecta" family="Hydraenidae" genus="Hydraena" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydraena borbonica" order="Coleoptera" pageId="6" pageNumber="81" phylum="Arthropoda" rank="species" species="borbonica">Hydraena borbonica</taxonomicName>
Fairmaire, 1898 (from La
<normalizedToken originalValue="Réunion">Reunion</normalizedToken>
) and
<taxonomicName class="Insecta" family="Hydraenidae" genus="Hydraena" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydraena ofella" order="Coleoptera" pageId="6" pageNumber="81" phylum="Arthropoda" rank="species" species="ofella">Hydraena ofella</taxonomicName>
Balfour-Browne, 1958 (from the Comoros) by the wider and less regular shape of the ventral branch of the main piece.
</paragraph>
<paragraph pageId="7" pageNumber="82">
<pageBreakToken pageId="7" pageNumber="82" start="start">Gonocoxite</pageBreakToken>
(Fig. 16): Subtrapezoidal, strongly transverse; basal part without setae, distal part strongly setose; basal apophyses small; inner plate slightly projecting.
</paragraph>
<paragraph pageId="7" pageNumber="82">Female tergite X (Fig. 17): Subsemicircular, transverse; disc sparsely covered with trichoid setae; subapical setae vermiform; apical margin without excision.</paragraph>
<paragraph pageId="8" pageNumber="83">
<pageBreakToken pageId="8" pageNumber="83" start="start">Spermatheca</pageBreakToken>
(Figs 18-19): Proximal portion crescentic; distal portion elongately cup-shaped.
</paragraph>
<paragraph pageId="8" pageNumber="83">Secondary sexual characters: Foretibia and metatibia slightly curved in male. Male mesoventral process more slender; in male more or less as wide as mesotibia, in female slightly wider than mesotibia.</paragraph>
<caption pageId="8" pageNumber="83">
<paragraph pageId="8" pageNumber="83">
Figures 3-6.
<taxonomicName class="Insecta" family="Hydraenidae" genus="Hydraena" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydraena mahensis" order="Coleoptera" pageId="8" pageNumber="83" phylum="Arthropoda" rank="species" species="mahensis">Hydraena mahensis</taxonomicName>
Scott, 1913, aedeagus: 3 strictly lateral view 4 dorsal view 5 strictly ventral view 6 ventral view, slightly rotated to left side. Scale bar: 0.1 mm.
</paragraph>
</caption>
<caption pageId="8" pageNumber="83">
<paragraph pageId="8" pageNumber="83">
Figures 7-11.
<taxonomicName class="Insecta" family="Hydraenidae" genus="Hydraena" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydraena mahensis" order="Coleoptera" pageId="8" pageNumber="83" phylum="Arthropoda" rank="species" species="mahensis">Hydraena mahensis</taxonomicName>
Scott, 1913: 7 male terminal sternite and spiculum 8 gonocoxite 9 female tergite X 10-11 spermatheca, in different views. Scale bar: 0.1 mm.
</paragraph>
</caption>
<caption pageId="8" pageNumber="83">
<paragraph pageId="8" pageNumber="83">
Figures 12-14.
<taxonomicName class="Insecta" family="Hydraenidae" genus="Hydraena" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydraena matyoti" order="Coleoptera" pageId="8" pageNumber="83" phylum="Arthropoda" rank="species" species="matyoti">Hydraena matyoti</taxonomicName>
<normalizedToken originalValue="Jäch">Jaech</normalizedToken>
&amp; Delgado, sp. n., aedeagus: 12 lateral view 13 ventral view 14 dorsal view. Scale bar: 0.1 mm.
</paragraph>
</caption>
<caption pageId="8" pageNumber="83">
<paragraph pageId="8" pageNumber="83">
Figures 15-19.
<taxonomicName class="Insecta" family="Hydraenidae" genus="Hydraena" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydraena matyoti" order="Coleoptera" pageId="8" pageNumber="83" phylum="Arthropoda" rank="species" species="matyoti">Hydraena matyoti</taxonomicName>
<normalizedToken originalValue="Jäch">Jaech</normalizedToken>
&amp; Delgado, sp. n.: 15 male terminal sternite and spiculum 16 gonocoxite 17 female tergite X 18-19 spermatheca, in different views. Scale bar: 0.1 mm.
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="8" pageNumber="83" type="habitat">
<paragraph pageId="8" pageNumber="83">Habitat.</paragraph>
<paragraph pageId="8" pageNumber="83">
On
<normalizedToken originalValue="Mahé">Mahe</normalizedToken>
this species was collected in a small puddle on a forest trail (leg. E. Heiss), and in small mountain streams at more than 600 m a.s.l. (leg. M. Madl and S.
<normalizedToken originalValue="Schödl">Schoedl</normalizedToken>
) - the single specimen collected by M. Madl was found on a small piece of wood lying in a very small stream (Fig. 21). A single female was collected on Silhouette, Jardin Marron, near a hiking trail, ca. 400 m a.s.l., approx.
<geoCoordinate direction="south" orientation="latitude" precision="9" value="-4.486">4°29.16'S</geoCoordinate>
<geoCoordinate direction="east" orientation="longitude" precision="9" value="55.236">55°14.16'E</geoCoordinate>
, on a hygropetric rockface (leg. G. Wewalka).
</paragraph>
<caption pageId="8" pageNumber="83">
<paragraph pageId="8" pageNumber="83">
Figure 20. Habitat of
<taxonomicName class="Insecta" family="Hydraenidae" genus="Hydraena" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydraena mahensis" order="Coleoptera" pageId="8" pageNumber="83" phylum="Arthropoda" rank="species" species="mahensis">Hydraena mahensis</taxonomicName>
Scott, 1913. Swamp at Petite Police Bay,
<normalizedToken originalValue="Mahé">Mahe</normalizedToken>
.
</paragraph>
</caption>
<caption pageId="8" pageNumber="83">
<paragraph pageId="8" pageNumber="83">
Figure 21. Habitat of
<taxonomicName class="Insecta" family="Hydraenidae" genus="Hydraena" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydraena matyoti" order="Coleoptera" pageId="8" pageNumber="83" phylum="Arthropoda" rank="species" species="matyoti">Hydraena matyoti</taxonomicName>
<normalizedToken originalValue="Jäch">Jaech</normalizedToken>
&amp; Delgado, sp. n. Small stream, Morne Seychellois National Park,
<normalizedToken originalValue="Mahé">Mahe</normalizedToken>
.
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="8" pageNumber="83" type="distribution">
<paragraph pageId="8" pageNumber="83">Distribution.</paragraph>
<paragraph pageId="8" pageNumber="83">
Endemic to the Inner Seychelles. So far known only from
<normalizedToken originalValue="Mahé">Mahe</normalizedToken>
and Silhouette.
</paragraph>
</subSubSection>
<subSubSection pageId="8" pageNumber="83" type="etymology">
<paragraph pageId="8" pageNumber="83">Etymology.</paragraph>
<paragraph pageId="8" pageNumber="83">
This species is named for Pat Matyot, a Seychellois naturalist with a special interest in entomology. Pat Matyot is employed by the Seychelles Broadcasting Corporation and has produced many television features on the
<normalizedToken originalValue="countrys">country's</normalizedToken>
fauna and flora. He has served on the boards and science committees of a number of conservation organisations in Seychelles and is at present a board member of the Island Conservation Society (ICS) and the Silhouette Foundation. The epithet is a noun in the genitive case.
</paragraph>
</subSubSection>
</treatment>
</document>