137 lines
12 KiB
XML
137 lines
12 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.363.6482" ID-GBIF-Dataset="36e5551d-3881-45a2-810a-386e517c86fc" ID-PMC="PMC3867181" ID-Pensoft-Pub="1313-2970-363-1" ID-PubMed="24363601" ID-ZBK="780695A9CB2E4FECA0560BA6F456185E" ModsDocAuthor="" ModsDocDate="2013" ModsDocID="1313-2970-363-1" ModsDocOrigin="ZooKeys 363" ModsDocTitle="A revision of the shore-fly genus Hydrochasma Hendel (Diptera, Ephydridae)" checkinTime="1451246560986" checkinUser="pensoft" docAuthor="Mathis, Wayne N. & Zatwarnicki, Tadeusz" docDate="2013" docId="9D349BCC4EB1298B596E0A632A6D610B" docLanguage="en" docName="ZooKeys 363: 1-161" docOrigin="ZooKeys 363" docSource="http://dx.doi.org/10.3897/zookeys.363.6482" docTitle="Hydrochasma viridum Mathis & Zatwarnicki, 2013, sp. n." docType="treatment" docUuid="491CEEA6-5C26-45ED-9AFF-FC829C5D8F1F" docUuidSource="ZooBank" docVersion="4" lastPageNumber="30" masterDocId="FFF2FFCA0333765855689824FFCDB839" masterDocTitle="A revision of the shore-fly genus Hydrochasma Hendel (Diptera, Ephydridae)" masterLastPageNumber="161" masterPageNumber="1" pageNumber="28" updateTime="1668157177207" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>A revision of the shore-fly genus Hydrochasma Hendel (Diptera, Ephydridae)</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Mathis, Wayne N.</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Zatwarnicki, Tadeusz</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>ZooKeys</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2013</mods:date>
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<mods:detail type="volume">
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<mods:number>363</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>1</mods:start>
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<mods:end>161</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/zookeys.363.6482</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.363.6482</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-363-1</mods:identifier>
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<mods:identifier type="ZBK">780695A9CB2E4FECA0560BA6F456185E</mods:identifier>
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<mods:identifier type="ZooBank">780695A9CB2E4FECA0560BA6F456185E</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="152050153" LSID="urn:lsid:zoobank.org:act:491CEEA6-5C26-45ED-9AFF-FC829C5D8F1F" httpUri="http://treatment.plazi.org/id/9D349BCC4EB1298B596E0A632A6D610B" lastPageId="29" lastPageNumber="30" pageId="27" pageNumber="28">
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<subSubSection pageId="27" pageNumber="28" type="nomenclature">
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<paragraph pageId="27" pageNumber="28">
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9.
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<taxonomicName LSID="http://zoobank.org/491CEEA6-5C26-45ED-9AFF-FC829C5D8F1F" class="Insecta" family="Ephydridae" genus="Hydrochasma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrochasma viridum" order="Diptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="viridum">Hydrochasma viridum</taxonomicName>
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<taxonomicNameLabel pageId="27" pageNumber="28">sp. n.</taxonomicNameLabel>
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Figs 49-56
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="28" lastPageNumber="29" pageId="27" pageNumber="28" type="diagnosis">
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<paragraph pageId="27" pageNumber="28">Diagnosis.</paragraph>
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<paragraph lastPageId="28" lastPageNumber="29" pageId="27" pageNumber="28">
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This species is distinguished from other congeners by the following combination of characters: Small shore flies, body length 1.25-1.45 mm.
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<pageBreakToken pageId="28" pageNumber="29" start="start">Head</pageBreakToken>
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: Antenna mostly blackish gray; medial surface of basal flagellomere mostly dark colored; parafacial silvery white, concolorous with facial coloration (Figs 49-51); gena-to-eye ratio 0.23-0.25. Thorax: Mesonotum with extensive metallic green coloration, extended laterally to notopleuron and presutural area. Wing with costal vein ratio 0.80-0.82; M vein ratio 0.46-0.48. Forefemur lacking a distinctive, comb-like row of stout setulae along anteroventral surface; tibiae mostly gray; hindtibia bearing a long, spur-like seta ventroapically. Abdomen: Tergites 1-4 greenish gray, subshiny, lacking wedge-shaped, gray to silvery gray areas, tergite 5 of male more gray colored than preceding tergites. Male terminalia (Figs 52-56): Combined structures generally moderately elongate, in posterior view height slightly more than 3
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<normalizedToken originalValue="×">x</normalizedToken>
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width, generally sparsely setulose dorsally, bearing large to small setulae ventrally; epandrium with dorsal arch above cerci relatively thinly developed, incompletely connected medially, in posterior view (Fig. 52) as an inverted U on dorsal third with disconnect dorsomedially, thereafter ventrally widest sub-basally, then tapered with lateral margins shallowly curved medially, ventral third as very thin, elongate, digitiform, parallel-sided projections, these cruciate subapically, deeply bifurcate medially, medial bifurcation wider basally than width of ventral projections at same level, ventral epandrial projections minutely setulose, apical setulae stout, apex rounded; cerci moderately long, height nearly twice width, widely semi-hemispherical (Fig. 53), not attached lateroventrally with epandrium; aedeagus in lateral view (Fig. 55) elongate, over 5
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<normalizedToken originalValue="×">x</normalizedToken>
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longer than wide, tubular, shallowly curved, slightly tapered toward apex with apical portion moderately and irregularly pointed, in ventral view (Fig. 54) nearly straight sided, slightly thinner medially than basally or subapically, apical portion tapered to narrowly rounded apex; phallapodeme in lateral view (Fig. 55) generally narrow to very shallowly and broadly triangular, extended keel only a slight bump toward attachment with hypandrium, in ventral view (Fig. 54) an elongate, thin T with crossbar very short; gonite in lateral view (Fig. 55) narrow, elongate, bar-like, very shallowly curved, in ventral view (Fig. 54) shallowly curved, tapered at both ends; hypandrium in lateral view (Fig. 55) elongate, as long or slightly longer than aedeagus, moderately thin, mostly parallel sided, anterior portion evenly tapered to narrowly rounded anterior apex, in ventral view (Fig. 54) generally as a gently curved arrowhead with posterior half generally narrower, posterior margin widely and moderately deeply emarginate with narrow, lateral arms, tapered to anterior portion of base, anterior portion elongate, V-shaped with lateral margins shallowly curved, with elongate, narrow, lateral, posterior extended processes that are aligned parallel to overall orientation of hypandrium, anterior margin tapered to bluntly rounded apex.
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</paragraph>
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<caption pageId="28" pageNumber="29">
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<paragraph pageId="28" pageNumber="29">
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Figures 49-51.
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<taxonomicName class="Insecta" family="Ephydridae" genus="Hydrochasma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrochasma viridum" order="Diptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="viridum">Hydrochasma viridum</taxonomicName>
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sp. n. (Guyana. Moco-Moco, Lethem) 49 head, anterior view 50 same, lateral view 51 same, oblique view. Scale bar = 0.1 mm.
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</paragraph>
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</caption>
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<caption pageId="28" pageNumber="29">
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<paragraph pageId="28" pageNumber="29">
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Figures 52-55.
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<taxonomicName class="Insecta" family="Ephydridae" genus="Hydrochasma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrochasma viridum" order="Diptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="viridum">Hydrochasma viridum</taxonomicName>
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sp. n. (Guyana. Pirara Ranch and River) 52 epandrium and cerci, posterior view 53 same, lateral view 54 internal structures of male terminalia (aedeagus [shaded], phallapodeme, gonite, hypandrium), ventral view 55 same, lateral view. Scale bar = 0.1 mm.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="29" pageNumber="30" type="type material">
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<paragraph pageId="29" pageNumber="30">
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<pageBreakToken pageId="29" pageNumber="30" start="start">Type</pageBreakToken>
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material.
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</paragraph>
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<paragraph pageId="29" pageNumber="30">
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The holotype male of
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<taxonomicName class="Insecta" family="Ephydridae" genus="Hydrochasma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrochasma viridum" order="Diptera" pageId="29" pageNumber="30" phylum="Arthropoda" rank="species" species="viridum">Hydrochasma viridum</taxonomicName>
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is labeled "GUYANA. Karanambo[,] Rupununi Riv[er],ox bow[,]
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="3.7516665">3°45.1'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-59.31">59°18.6'W</geoCoordinate>
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[,] 2Apr1994, W. Mathis/HOLOTYPE ♂
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<taxonomicName class="Insecta" family="Ephydridae" genus="Hydrochasma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrochasma viridum" order="Diptera" pageId="29" pageNumber="30" phylum="Arthropoda" rank="species" species="viridum">Hydrochasma viridum</taxonomicName>
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Mathis & Zatwarnicki, USNM [red]/USNM ENT 00089395 [plastic bar code label]." The holotype is double mounted (minuten in a block of plastic), is in good condition (some dirt specks on specimen), and is deposited in the USNM. Paratype are as follows: GUYANA. Moco-Moco, Lethem (30 km E in Kanuku Mountains;
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="3.3033333">03°18.2'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-59.65">59°39.0'W</geoCoordinate>
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), 3-6 Apr 1994, W. N. Mathis (1♂, 1♀; USNM); Pirara Ranch and River (
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="3.5349998">03°32.1'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-59.675">59°40.5'W</geoCoordinate>
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), 24-25 Apr 1995, W. N. Mathis (1♂, 1♀; USNM).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="29" pageNumber="30" type="type locality">
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<paragraph pageId="29" pageNumber="30">Type locality.</paragraph>
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<paragraph pageId="29" pageNumber="30">
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Guyana. Karanambo, Rupununi River (ox bow;
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="3.7516665">03°45.1'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-59.31">59°18.6'W</geoCoordinate>
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).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="29" pageNumber="30" type="distribution">
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<paragraph pageId="29" pageNumber="30">Distribution</paragraph>
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<paragraph pageId="29" pageNumber="30">(Fig. 56). Neotropical: Guyana.</paragraph>
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<caption pageId="29" pageNumber="30">
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<paragraph pageId="29" pageNumber="30">
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Figure 56. Distribution of
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<taxonomicName class="Insecta" family="Ephydridae" genus="Hydrochasma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrochasma viridum" order="Diptera" pageId="29" pageNumber="30" phylum="Arthropoda" rank="species" species="viridum">Hydrochasma viridum</taxonomicName>
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sp. n.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="29" pageNumber="30" type="etymology">
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<paragraph pageId="29" pageNumber="30">Etymology.</paragraph>
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<paragraph pageId="29" pageNumber="30">The species epithet, viridum, is of Latin derivation, meaning green, and refers to the metallic green coloration of the mesonotum.</paragraph>
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</subSubSection>
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<subSubSection pageId="29" pageNumber="30" type="remarks">
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<paragraph pageId="29" pageNumber="30">Remarks.</paragraph>
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<paragraph pageId="29" pageNumber="30">
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Externally, the dorsum of the head and mesonotum of this species is unique among congeners, especially species in the faciale group, in having a pronounced, subshiny to shiny, with mostly greenish to bluish luster. Internally, this species could only be confused with
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<taxonomicName class="Insecta" family="Ephydridae" genus="Hydrochasma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hydrochasma patens" order="Diptera" pageId="29" pageNumber="30" phylum="Arthropoda" rank="species" species="patens">Hydrochasma patens</taxonomicName>
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, and indeed, structures of the male terminalia of these two species are similar, although differing in details (compare Figs 26-29 with Figs 52-55).
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |