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<document id="CBE95E2368A9685B9740ACC70E1A55DC" ID-CLB-Dataset="36010" ID-DOI="http://dx.doi.org/10.3897/zookeys.136.1914" ID-GBIF-Dataset="0e37f739-024b-4e12-a7e0-1aaaaf571dfc" ID-PMC="PMC3229288" ID-Pensoft-Pub="1313-2970-136-47" ID-PubMed="22140348" ModsDocAuthor="" ModsDocDate="2011" ModsDocID="1313-2970-136-47" ModsDocOrigin="ZooKeys 136" ModsDocTitle="Larvae and a new species of Ancyronyx Erichson, 1847 (Insecta, Coleoptera, Elmidae) from Palawan, Philippines, using DNA sequences for the assignment of the developmental stages" checkinTime="1451249787770" checkinUser="pensoft" docAuthor="Freitag, Hendrik &amp; Balke, Michael" docDate="2011" docId="9442FD7DF4D4EBBFA772F3255F1A0EB4" docLanguage="en" docName="ZooKeys 136: 47-82" docOrigin="ZooKeys 136" docSource="http://dx.doi.org/10.3897/zookeys.136.1914" docTitle="Ancyronyx pseudopatrolus Freitag &amp; Jaech 2007" docType="treatment" docVersion="5" lastPageNumber="63" masterDocId="FF89FF98C22CFFB4FFFBFFDEF932FFB9" masterDocTitle="Larvae and a new species of Ancyronyx Erichson, 1847 (Insecta, Coleoptera, Elmidae) from Palawan, Philippines, using DNA sequences for the assignment of the developmental stages" masterLastPageNumber="82" masterPageNumber="47" pageNumber="60" updateTime="1732932842938" updateUser="ExternalLinkService">
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<mods:title id="9301A7074B0BFFDC579B3D69DE4200AD">Larvae and a new species of Ancyronyx Erichson, 1847 (Insecta, Coleoptera, Elmidae) from Palawan, Philippines, using DNA sequences for the assignment of the developmental stages</mods:title>
</mods:titleInfo>
<mods:name id="7864BC3D456C52ADCD8A2034246EBB42" type="personal">
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</mods:role>
<mods:namePart id="B22ADA55B16DC2865310C55CF0C76760">Freitag, Hendrik</mods:namePart>
</mods:name>
<mods:name id="D29DEDB346A44775907628B87C46F3D9" type="personal">
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<mods:namePart id="51DCEED58AEA7B6568D9563F4FBC5789">Balke, Michael</mods:namePart>
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<mods:date id="1A1CE51E5FAEC0D3113A674AEE8A6506">2011</mods:date>
<mods:detail id="9653A38D4B3E030BAEE6D6A3AF724EFC" type="volume">
<mods:number id="C01A0667BC3F1FE283D47D402E3EE00D">136</mods:number>
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<mods:classification id="6F67AF3DEC2491CEEB70F013AD8B1287">journal article</mods:classification>
<mods:identifier id="D0997F2EA476AF427B18325C18C484D4" type="DOI">http://dx.doi.org/10.3897/zookeys.136.1914</mods:identifier>
<mods:identifier id="5FBD492E57C66EE73C52DEAE551A6BAF" type="Pensoft-Pub">1313-2970-136-47</mods:identifier>
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<treatment id="9442FD7DF4D4EBBFA772F3255F1A0EB4" ID-GBIF-Taxon="152031407" LSID="urn:lsid:plazi:treatment:9442FD7DF4D4EBBFA772F3255F1A0EB4" httpUri="http://treatment.plazi.org/id/9442FD7DF4D4EBBFA772F3255F1A0EB4" lastPageId="16" lastPageNumber="63" pageId="13" pageNumber="60" scope_class="Insecta" scope_family="Elmidae" scope_order="Coleoptera">
<subSubSection id="D6BDD4141097AEE24FC13E8DD8B10790" pageId="13" pageNumber="60" type="nomenclature">
<paragraph id="04B76FA26FFC623D4C225D21EAA6F41F" pageId="13" pageNumber="60">
<taxonomicName id="28CA0B5C26A0C5031F858E0F69EDEEAF" ID-CoL="DPSX" LSID="http://species-id.net/wiki/Ancyronyx_pseudopatrolus" authority="Freitag &amp; Jaech, 2007" authorityName="Freitag &amp; Jaech" authorityYear="2007" class="Insecta" family="Elmidae" genus="Ancyronyx" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ancyronyx pseudopatrolus" order="Coleoptera" pageId="13" pageNumber="60" phylum="Arthropoda" rank="species" species="pseudopatrolus">
Ancyronyx pseudopatrolus Freitag &amp;
<normalizedToken id="C72046D61E54EC44B7717D43CC2C6BF2" originalValue="Jäch">Jaech</normalizedToken>
, 2007
</taxonomicName>
Figs 513
<normalizedToken id="3C71CB02E8EFE7602AFCDBA16E070FFE" originalValue="A–E14A–I">A-E14A-I</normalizedToken>
</paragraph>
</subSubSection>
<subSubSection id="3D517110C2BC9D165A104FACC848AF0D" pageId="13" pageNumber="60" type="reference_group">
<paragraph id="EA063D91CCCEC71FF31A488BF9CC0DEC" pageId="13" pageNumber="60">
<taxonomicName id="301DD2284CE391ADBFAC111F19847023" class="Insecta" family="Elmidae" genus="Ancyronyx" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ancyronyx pseudopatrolus" order="Coleoptera" pageId="13" pageNumber="60" phylum="Arthropoda" rank="species" species="pseudopatrolus">Ancyronyx pseudopatrolus</taxonomicName>
Freitag &amp;
<normalizedToken id="A096C9BA6695F22257BBD4CC42300FED" originalValue="Jäch">Jaech</normalizedToken>
, 2007: 46-47 (adult description).
</paragraph>
</subSubSection>
<subSubSection id="5329F5CAE44D20757CB6C3A7FB88148F" pageId="13" pageNumber="60" type="material examined">
<paragraph id="EE50372757A582D8D78BFC371DBBAA5D" pageId="13" pageNumber="60">Material examined.</paragraph>
<paragraph id="12808F4A95484CD47BED5FCB81CC6AFB" pageId="13" pageNumber="60">
11L (2
<normalizedToken id="5CE65944E8E0FCA23EC2EFCD084B650D" originalValue="×">x</normalizedToken>
0.17, 2
<normalizedToken id="DAD0124BD1501271E27D4CF64A6B661D" originalValue="×">x</normalizedToken>
0.22, 0.23, 0.24, 3
<normalizedToken id="36C831B95168A2D4B344395498B28D2A" originalValue="×">x</normalizedToken>
0.27, 0.28, 2
<normalizedToken id="F1FC31C4A8D53DBE66BB177D814D207A" originalValue="×">x</normalizedToken>
0.29) (NMW, ZMUC, CFP) &quot;PHIL.: Palawan, P. Princesa Panaguman R.
<geoCoordinate id="2921B68169015874E4A7C213BDDFA439" direction="north" orientation="latitude" precision="15" value="10.2525">10°15'09&quot;N</geoCoordinate>
,
<geoCoordinate id="9A1D1CA403E13F05AC129D1C16CD220F" direction="east" orientation="longitude" precision="15" value="118.9675">118°58'03&quot;E</geoCoordinate>
17.5.2001, leg. Freitag (PR1)D&quot;; 2L (0.23, 0.27) (PCSD) &quot;PHIL.: Palawan, P. Princesa Panaguman R., Marofinas
<geoCoordinate id="DB9040D2C91B10623CE6D7BB942CB033" direction="north" orientation="latitude" precision="15" value="10.2525">10°15'09&quot;N</geoCoordinate>
,
<geoCoordinate id="3C4F0C79F90AF62813C2E0C85FD5C8C0" direction="east" orientation="longitude" precision="15" value="118.9675">118°58'03&quot;E</geoCoordinate>
01.8.2001,leg.Freitag(PR1)C-R&quot;; 2L (0.24, 0.28) (SMTD) &quot;PHIL.: Palawan, P. Princesa Panaguman R., Marofinas
<geoCoordinate id="169E8C0D3B15AB1F6329E6F2D3820FF0" direction="north" orientation="latitude" precision="15" value="10.2525">10°15'09&quot;N</geoCoordinate>
,
<geoCoordinate id="DCF634576809AE1DCEAB25033D1CD28F" direction="east" orientation="longitude" precision="15" value="118.9675">118°58'03&quot;E</geoCoordinate>
15.6.2001, leg.Freitag(PR1)C-R&quot;; 3♂♂, 1♀ (UPLB, ZSM [FR003], PCSD, IMRL) &quot;PHIL.: Palawan, P.Princesa; Concepcion, Taranaban R. trib.; mount.creek c.8km upstr.; dist. prim. forest; riffle;rocks, boulders,roots; c.450m asl
<geoCoordinate id="34CE68E2CD97333E7E7FFDB38EB93937" direction="north" orientation="latitude" precision="925" value="10.083333">10°05'N</geoCoordinate>
,
<geoCoordinate id="844EB078A011106D9092F40F4F510D69" direction="east" orientation="longitude" precision="925" value="119.01667">119°01'E</geoCoordinate>
, 28.1.1995 leg. Freitag (16f)M&quot;; 3♂♂, 2♀♀ 1L (0.29) (SMTD, ZSM [FR040], NMW, ZMUC, CFP) &quot;PHIL.: Palawan, P.Princesa; Concepcion, Taranaban R.; c.6km upstr. Highw., mount.riv., riffle; boulders, woodlitter; c.150m asl
<geoCoordinate id="97F444B78F5D22432C0BCD7861272D70" direction="north" orientation="latitude" precision="15" value="10.041667">10°02'30&quot;N</geoCoordinate>
,
<geoCoordinate id="453AE9B0B410E63DBC416A2D72E60C25" direction="east" orientation="longitude" precision="15" value="119.0125">119°00'45&quot;E</geoCoordinate>
, 20.1.1995 leg. Freitag (16b)M&quot;.
</paragraph>
</subSubSection>
<subSubSection id="C1A537312E2C4FF226021C06A62492F2" pageId="13" pageNumber="60" type="remarks">
<paragraph id="6EC2FCCE19D061FA9136D78EBFE49A5C" pageId="13" pageNumber="60">Remarks.</paragraph>
<paragraph id="E8245A06AE7A0DDE8EAE2C42774AB383" pageId="13" pageNumber="60">
This species was originally described based on a single male exemplar. As additional material including females have been collected since then we will provide a short diagnosis of the female characters and sexual dimorphisms. Furthermore, the aedeagus (Fig. 13A) is figured in here as SEM micrograph, for the detailed diagnosis see Freitag &amp;
<normalizedToken id="68A4C89D1476336CCBC743F6242A0DD1" originalValue="Jäch">Jaech</normalizedToken>
(2007), pp. 41 &amp; 46; Figs 12a, b.
</paragraph>
</subSubSection>
<subSubSection id="C22A8673B625A83F695AAF98ECACBA9A" lastPageId="14" lastPageNumber="61" pageId="13" pageNumber="60" type="adult female diagnosis">
<paragraph id="82A677A69DACC5BC06479D29D984915C" pageId="13" pageNumber="60">Adult female diagnosis.</paragraph>
<paragraph id="BC8F53A65483457EA3B1CD1DAF28C21F" lastPageId="14" lastPageNumber="61" pageId="13" pageNumber="60">
Ovipositor as in Fig. 13B. Total length c. 500
<normalizedToken id="0E42AEF88A6989BEFC461DFC53386671" originalValue="µm">µm</normalizedToken>
. Stylus comparably stout as in
<taxonomicName id="C3B3BE85CFA85412BA8554240B3051C2" class="Insecta" family="Elmidae" genus="Ancyronyx" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ancyronyx punkti" order="Coleoptera" pageId="13" pageNumber="60" phylum="Arthropoda" rank="species" species="punkti">Ancyronyx punkti</taxonomicName>
(see Freitag &amp;
<normalizedToken id="AA7128EE93630FBEAB27F5D4972E6EF0" originalValue="Jäch">Jaech</normalizedToken>
, 2007, Fig. 13d), slightly conical
<pageBreakToken id="DD4BF00564C023A0875B5A0A56931D64" pageId="14" pageNumber="61" start="start">towards</pageBreakToken>
base (broader apically), slightly outwards directed. Coxite long and slender as in
<taxonomicName id="1291BE4F7274566FFFDEF3D6A47860F7" class="Insecta" family="Elmidae" genus="Ancyronyx" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ancyronyx patrolus" order="Coleoptera" pageId="14" pageNumber="61" phylum="Arthropoda" rank="species" species="patrolus">Ancyronyx patrolus</taxonomicName>
(comp. Freitag &amp;
<normalizedToken id="F183F681E1361CA022E49D599F043D20" originalValue="Jäch">Jaech</normalizedToken>
, 2007, Fig. 11d); setae rather short, peg-like, apically rounded, not acute, most densely dispersed at coxite apex; mesal coxite margin moderately pubescent; basal portion c. half as long as distal portion, with slightly more acute and pointed setae than those at distal portion, most densely set at proximal and lateral margins. Valvifer about as long as coxite; fibula enlarged and curved inwards at proximal end.
</paragraph>
</subSubSection>
<subSubSection id="0A460AC20AF658C339AC0E8625B843A7" lastPageId="15" lastPageNumber="62" pageId="14" pageNumber="61" type="secondary sexual characters">
<paragraph id="8E273DD795C1270987ACB755C61B8710" pageId="14" pageNumber="61">Secondary sexual characters.</paragraph>
<paragraph id="A160BF169D8E3D5AD2D24EA4C83EB64B" lastPageId="15" lastPageNumber="62" pageId="14" pageNumber="61">
Sternite VIII in female (Fig. 13C) overall very similar to that of
<taxonomicName id="4CE9961C3F76AD55F35B7265753871D1" class="Insecta" family="Elmidae" genus="Ancyronyx" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ancyronyx punkti" order="Coleoptera" pageId="14" pageNumber="61" phylum="Arthropoda" rank="species" species="punkti">Ancyronyx punkti</taxonomicName>
, with median strut apically widened and truncate; posterior portion with disc densely covered with small, inconspicuous setae; posterior margin with moderately long trichoid setae. Sternite VIII in male weakly sclerotized, median strut distinctly shorter than in female. Ventrite 5 in female (Fig. 13D) overall very similar to that of
<taxonomicName id="86DEA1BFF04E97450F7FAD2734EEB52D" class="Insecta" family="Elmidae" genus="Ancyronyx" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ancyronyx punkti" order="Coleoptera" pageId="14" pageNumber="61" phylum="Arthropoda" rank="species" species="punkti">Ancyronyx punkti</taxonomicName>
, subtriangular, with small and only slightly elevated lateral projections.
<pageBreakToken id="D9C5123B8D3783A3449036B0A4183386" pageId="15" pageNumber="62" start="start">Ventrite</pageBreakToken>
5 in male (see Freitag &amp;
<normalizedToken id="8B311274A03A2A4F83391F8CEC41CEF1" originalValue="Jäch">Jaech</normalizedToken>
, 2007, Fig. 12d) suboval, stouter and with large and distinctly elevated lateral projections. Tergite VIII in female (Fig. 13E) longer than broad; condyles more or less straight; asperities only conspicuous laterally.
</paragraph>
</subSubSection>
<subSubSection id="B0D01379EC5D59EA1F9553307D0127FE" lastPageId="16" lastPageNumber="63" pageId="15" pageNumber="62" type="larval diagnosis (based on 6th instar)">
<paragraph id="6E0AD46C62F2F1B9AA541E0367F636E0" pageId="15" pageNumber="62">Larval diagnosis (based on 6th instar).</paragraph>
<paragraph id="AF7E5878F5537B5211D1CD0508693CA3" pageId="15" pageNumber="62">
Colour (Fig. 5) somewhat similar to that of
<taxonomicName id="6851BFFC26693C672B40B984DBCB27C8" class="Insecta" family="Elmidae" genus="Ancyronyx" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ancyronyx minerva" order="Coleoptera" pageId="15" pageNumber="62" phylum="Arthropoda" rank="species" species="minerva">Ancyronyx minerva</taxonomicName>
and
<taxonomicName id="B2CFF4E19B3D5E3F5C70BBBEBF193A85" class="Insecta" family="Elmidae" genus="Ancyronyx" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ancyronyx punkti" order="Coleoptera" pageId="15" pageNumber="62" phylum="Arthropoda" rank="species" species="punkti">Ancyronyx punkti</taxonomicName>
, but differs slightly in the dorsal and leg colour patterns. Anterior yellow pronotal band very broad, reaching up to anterior 0.4, sublaterally extended posteriad (area of explanate lateral pronotal gutter). Meso- and metanotum and abdominal segments with paler entire posterior margin or entirely dark brown (except for paler posterolateral projections). Colour patterns of head and abdominal segment IX as in
<taxonomicName id="806BE84707B9CA28ACA3A5F230195143" class="Insecta" family="Elmidae" genus="Ancyronyx" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ancyronyx punkti" order="Coleoptera" pageId="15" pageNumber="62" phylum="Arthropoda" rank="species" species="punkti">Ancyronyx punkti</taxonomicName>
. Legs yellowish pale except for dark distal tibia area around claw insertion.
</paragraph>
<paragraph id="8CB6CE4419AA514902DFEC0A9F520AF5" pageId="15" pageNumber="62">
HW c. 0.29 mm; entire larva about 3.0 mm long. Body shape as in
<taxonomicName id="384704B356E89CB9D6AFC4D767B2F042" class="Insecta" family="Elmidae" genus="Ancyronyx" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ancyronyx punkti" order="Coleoptera" pageId="15" pageNumber="62" phylum="Arthropoda" rank="species" species="punkti">Ancyronyx punkti</taxonomicName>
, except for the following characters:
</paragraph>
<paragraph id="309A921A23B9A2F7D86051E140EBF67F" pageId="15" pageNumber="62">All abdominal posterolateral projections (Fig. 14A) very prominent, distinctly overreaching posterior segment margins. Setiferous tubercles at dorsal site very prominent and protruding (Figs 14A, B). Ventral side densely covered with asperities and scattered setiferous tubercles (Fig. 14E).</paragraph>
<paragraph id="09DF69A6666A9FB155A49ACA4183FB83" lastPageId="16" lastPageNumber="63" pageId="15" pageNumber="62">
Head (Figs 5; 14
<normalizedToken id="DBEC1E79C9DA40EBCC44B32D6B0FB8F5" originalValue="B–D">B-D</normalizedToken>
) broadest at c. posterior 0.3, margins not subparallel. Lateral head with clumped stemmata arranged in well defined round, protruding glabrous area (Fig. 14B); lateral setae short and rather inconspicuous; dorsolateral pair of double setae present and long (Fig. 14B); frontal suture V-shaped (Fig. 5). Labium (Fig. 14C)
<pageBreakToken id="2FC1E1387D19CADA5FB86945C5991748" pageId="16" pageNumber="63" start="start">as</pageBreakToken>
in
<taxonomicName id="D22006867AB14C1FF7F552A3CF5FE068" class="Insecta" family="Elmidae" genus="Ancyronyx" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ancyronyx punkti" order="Coleoptera" pageId="16" pageNumber="63" phylum="Arthropoda" rank="species" species="punkti">Ancyronyx punkti</taxonomicName>
, except for setae and spines of the mentum: sublateral trichoid setae moderately long; lateroapical pair of spines slender, inserted subapically. Antennae, labrum (both Fig. 14D), maxillae and gula (both Fig. 14C) as in
<taxonomicName id="B2BAC050E01E27A5C7D67BF4B6400067" class="Insecta" family="Elmidae" genus="Ancyronyx" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ancyronyx punkti" order="Coleoptera" pageId="16" pageNumber="63" phylum="Arthropoda" rank="species" species="punkti">Ancyronyx punkti</taxonomicName>
.
</paragraph>
<paragraph id="F8D4E8AD46B321222977E5B839C9B4D3" pageId="16" pageNumber="63">Pro-, meso- and metathorax (Figs 5; 14E, F) distinctly narrower anteriorly. Pronotum with conspicuous small signa in posterior half arranged as in Fig. 14E.</paragraph>
<paragraph id="6FC7CD67B0C4D24885804C2A4D351A3C" pageId="16" pageNumber="63">Sublateroposterior portions and anteriomedian sclerites of thoracic venters with setiferous tubercles (Fig. 14F); remaining ventral areas densely covered with asperities.</paragraph>
<paragraph id="D58FC369757471824B8AE91830BC5DFB" pageId="16" pageNumber="63">
Legs (Fig. 14G) as those of
<taxonomicName id="1E45BA4DFCB9060A09F8A455AD8C33CE" class="Insecta" family="Elmidae" genus="Ancyronyx" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ancyronyx punkti" order="Coleoptera" pageId="16" pageNumber="63" phylum="Arthropoda" rank="species" species="punkti">Ancyronyx punkti</taxonomicName>
.
</paragraph>
<paragraph id="D194FCF0C092064D6A407FBF89792C4C" pageId="16" pageNumber="63">
Abdomen (Figs 5; 14A,
<normalizedToken id="F3147F7577567F9D3920CBEC5CEDC8C0" originalValue="H–I">H-I</normalizedToken>
) with dorsosagittal carinae at the posterior portions of segments
<normalizedToken id="C32E56E0A9B7BFBDAEF0172DAB263818" originalValue="I–VIII">I-VIII</normalizedToken>
and most distinct at the almost entire segment IX (Fig. 14I). Squamose setae at posterior rim of segments
<normalizedToken id="0903C62E3BFD8F4C455A715FF5F24DF9" originalValue="I–VIII">I-VIII</normalizedToken>
broken off in specimen figured under SEM, but generally developed (Fig. 5). Sagittal ridge of ventral sclerite of segment I longer than 1/2 of segment length. Apex of segment IX slightly emarginate. Operculum (Fig. 14H) medially deeply impressed, rugulose, with few setae at disk.
</paragraph>
<caption id="E7198C1F486D9DA516AC4BD38762C926" pageId="16" pageNumber="63">
<paragraph id="C6C3C05D13CD166CCE8BF1DA894C6C40" pageId="16" pageNumber="63">
Figure 13.
<taxonomicName id="521A1FB7A915255B2DDCE0A9A9287EA2" class="Insecta" family="Elmidae" genus="Ancyronyx" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ancyronyx pseudopatrolus" order="Coleoptera" pageId="16" pageNumber="63" phylum="Arthropoda" rank="species" species="pseudopatrolus">Ancyronyx pseudopatrolus</taxonomicName>
Freitag &amp;
<normalizedToken id="86C3294FF47CFFC22D8020E9F5528A6E" originalValue="Jäch">Jaech</normalizedToken>
, 2007, adult male: A aedeagus in ventral few (SEM photograph); adult female: B ovipositor in ventral view; C sternite VIII in ventral view; D ventrite 4 &amp; 5 in ventral view; E tergite VIII in dorsal view.
</paragraph>
</caption>
<caption id="1B8394AC3D931342ED6568F65D596C35" pageId="16" pageNumber="63">
<paragraph id="3076732DABB90215A045163FFDE75158" pageId="16" pageNumber="63">
Figure 14.
<taxonomicName id="1BA7F8AFAC89CA4533F951443F67774A" class="Insecta" family="Elmidae" genus="Ancyronyx" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ancyronyx pseudopatrolus" order="Coleoptera" pageId="16" pageNumber="63" phylum="Arthropoda" rank="species" species="pseudopatrolus">Ancyronyx pseudopatrolus</taxonomicName>
Freitag &amp;
<normalizedToken id="7807354BEA6F06357C64E3A90097BA40" originalValue="Jäch">Jaech</normalizedToken>
, 2007, larva (SEM photographs): A lateral detail of abdomen, dorsal, with posterolateral projections and spiracles; B anterior portion of pronotum and head, lateral; C head, ventral; D head, frontal; E pronotum and head, dorsal; F thoracic segments, ventral; G foreleg, ventral; H distal portion of abdominal segment IX with operculum, ventral; I abdominal segment IX, dorsal.
</paragraph>
</caption>
</subSubSection>
<subSubSection id="04233450893C2D7BB7CDD9197894FC68" pageId="16" pageNumber="63" type="variation between larval instars">
<paragraph id="0E60840EBA135B9630CFDFCAC7A6453A" pageId="16" pageNumber="63">Variation between larval instars.</paragraph>
<paragraph id="6445141C2768070D7F29D7926C50135B" pageId="16" pageNumber="63">For this species, quite a number of prefinal instar specimens is available. They vary from the final instar description by the overall paler colour, relatively longer posterolateral projections, relatively shorter and broader legs and fewer setae on tibiae and femora.</paragraph>
</subSubSection>
<subSubSection id="89210D3C01E3859B99F73DA5EB7D5F33" pageId="16" pageNumber="63" type="larval differential diagnosis">
<paragraph id="DE985F3966F7BA40A68BEF94D1B9517D" pageId="16" pageNumber="63">Larval differential diagnosis.</paragraph>
<paragraph id="7F885471467EC59CB02DD83D2953F9B2" pageId="16" pageNumber="63">
The species can most easily be distinguished from its congeners
<taxonomicName id="D5DB5B723E9CB99505470154F9309E34" class="Insecta" family="Elmidae" genus="Ancyronyx" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ancyronyx minerva" order="Coleoptera" pageId="16" pageNumber="63" phylum="Arthropoda" rank="species" species="minerva">Ancyronyx minerva</taxonomicName>
and
<taxonomicName id="9050B3AA62C8CD5A7F0B56826156C35E" class="Insecta" family="Elmidae" genus="Ancyronyx" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ancyronyx punkti" order="Coleoptera" pageId="16" pageNumber="63" phylum="Arthropoda" rank="species" species="punkti">Ancyronyx punkti</taxonomicName>
by the colour pattern of the anterior pronotum and the dorsal posterior margins of thoracic and abdominal segments and the more distinctly developed, protruding tubercles and of the dorsal crest of the abdominal segment IX.
</paragraph>
</subSubSection>
<subSubSection id="DD3AEA30230FCEB33885A70D2A26465C" pageId="16" pageNumber="63" type="distribution">
<paragraph id="0F31539CC88ECDAA7A2EB325DB4B28DE" pageId="16" pageNumber="63">Distribution.</paragraph>
<paragraph id="10B7EFF43C163F83DEE351B6AF62EA9F" pageId="16" pageNumber="63">Only known from few rivers in central Palawan.</paragraph>
</subSubSection>
</treatment>
</document>
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