227 lines
20 KiB
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227 lines
20 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/alpento.2.22759" ID-GBIF-Dataset="3fbda16f-b111-49f8-8437-18217101d5aa" ID-Pensoft-Pub="2535-0889--15" ID-ZBK="A5359113D999405192B2B048FEA8FC1F" ModsDocAuthor="" ModsDocDate="2018" ModsDocID="2535-0889--15" ModsDocOrigin="Alpine Entomology " ModsDocTitle="On the genus Chaetocladius s. str. Kieffer, 1911 from Switzerland with descriptions of five new relic species occurring in glacial alpine springs and streams (Diptera, Chironomidae)" checkinTime="1555306894829" checkinUser="pensoft" docAuthor="Moubayed-Breil, Joel & Lods-Crozet, Brigitte" docDate="2018" docId="E3832A026D8DBC02DD58487514CFE4DD" docLanguage="en" docName="AlpEntomol 2: 15-34" docOrigin="Alpine Entomology 2" docSource="http://dx.doi.org/10.3897/alpento.2.22759" docTitle="Chaetocladius muttensis Moubayed-Breil, sp. n." docType="treatment" docUuid="13D2E7A8-EFB6-47F0-85C7-3BD46B5F3DB7" docUuidSource="ZooBank" docVersion="5" lastPageNumber="27" masterDocId="F91D42133E2EFFC4D57DFFBBFFC2FFCC" masterDocTitle="On the genus Chaetocladius s. str. Kieffer, 1911 from Switzerland with descriptions of five new relic species occurring in glacial alpine springs and streams (Diptera, Chironomidae)" masterLastPageNumber="34" masterPageNumber="15" pageNumber="22" updateTime="1643551736802" 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>On the genus Chaetocladius s. str. Kieffer, 1911 from Switzerland with descriptions of five new relic species occurring in glacial alpine springs and streams (Diptera, Chironomidae)</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>Moubayed-Breil, Joel</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>Lods-Crozet, Brigitte</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>Alpine Entomology</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2018</mods:date>
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<mods:detail type="volume">
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<mods:number>2</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>15</mods:start>
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<mods:end>34</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/alpento.2.22759</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/alpento.2.22759</mods:identifier>
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<mods:identifier type="Pensoft-Pub">2535-0889--15</mods:identifier>
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<mods:identifier type="ZBK">A5359113D999405192B2B048FEA8FC1F</mods:identifier>
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<mods:identifier type="ZooBank">A5359113D999405192B2B048FEA8FC1F</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="156199536" LSID="urn:lsid:zoobank.org:act:13D2E7A8-EFB6-47F0-85C7-3BD46B5F3DB7" httpUri="http://treatment.plazi.org/id/E3832A026D8DBC02DD58487514CFE4DD" lastPageId="12" lastPageNumber="27" pageId="7" pageNumber="22">
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<subSubSection pageId="7" pageNumber="22" type="nomenclature">
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<paragraph pageId="7" pageNumber="22">
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<taxonomicName LSID="http://zoobank.org/13D2E7A8-EFB6-47F0-85C7-3BD46B5F3DB7" authority="Moubayed-Breil" class="Insecta" family="Chironomidae" genus="Chaetocladius" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Chaetocladius muttensis" order="Diptera" pageId="7" pageNumber="22" phylum="Arthropoda" rank="species" species="muttensis">Chaetocladius muttensis Moubayed-Breil</taxonomicName>
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<taxonomicNameLabel pageId="7" pageNumber="22">sp. n.</taxonomicNameLabel>
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="8" lastPageNumber="23" pageId="7" pageNumber="22" type="materials_examined">
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<paragraph pageId="7" pageNumber="22">Material examined.</paragraph>
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<paragraph pageId="7" pageNumber="22">
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Holotype. Switzerland: upper basin of the Mutt glacial stream (station M5), altitude 1800 m, 03.VIII.1997,
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<geoCoordinate direction="north" orientation="latitude" precision="1" value="46.570095">46°34'12.347"N</geoCoordinate>
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, 8°22'51.363", 1 male adult, leg. B. Lods-Crozet. Environmental data of Mutt stream water are: crystalline to calcareous water, conductivity 61-183
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<normalizedToken originalValue="µS">µS</normalizedToken>
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/cm; temperature: 1-8 °C during late spring to late summer (June-September).
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</paragraph>
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<paragraph pageId="8" pageNumber="23">
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<pageBreakToken pageId="8" pageNumber="23" start="start">Paratype</pageBreakToken>
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. Switzerland: upper basin of Mutt stream (station M4), altitude 2100 m, 09.VIII.1997,
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<geoCoordinate direction="north" orientation="latitude" precision="1" value="46.56804">46°34'04.946"N</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="1" value="8.404766">8°24'17.159"E</geoCoordinate>
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, 1 male adult, leg. B. Lods-Crozet. Environmental data of Mutt stream water are: crystalline to calcareous water, conductivity 61-183
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<normalizedToken originalValue="µS">µS</normalizedToken>
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/cm; temperature: 1-8 °C during late spring to late summer (June-September). In the streamlet and springs located close to station M4, conductivity ranged between 103 to 253
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<normalizedToken originalValue="µS">µS</normalizedToken>
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/cm; temperature 4.4 to 14.8 °C (
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<bibRefCitation author="Ilg, C" journalOrPublisher="Archiv fuer Hydrobiologie" pageId="13" pageNumber="28" pagination="335 - 352" title="Invertebrate drift and physico-chemical variables in the tributaries of the Mutt, a Swiss glacial stream." url="https://doi.org/10.1127/archiv-hydrobiol/151/2001/335" volume="151" year="2001">Ilg et al. 2001</bibRefCitation>
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).
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</paragraph>
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<paragraph pageId="8" pageNumber="23">
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Holotype (mounted on 1 slide; GBIFCH 00460695) is deposited in the collections of the
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<normalizedToken originalValue="‘Musée">'Musee</normalizedToken>
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cantonal de Zoologie, Palais de Rumine, 6 place de la Riponne, CH-1014 Lausanne, Switzerland. The single paratype is deposited in the collection of the senior author.
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="10" lastPageNumber="25" pageId="9" pageNumber="24" type="diagnosis">
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<paragraph pageId="9" pageNumber="24">
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<pageBreakToken pageId="9" pageNumber="24" start="start">Diagnosis</pageBreakToken>
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.
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</paragraph>
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<paragraph lastPageId="10" lastPageNumber="25" pageId="9" pageNumber="24">
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<taxonomicName genus="C." lsidName="C. muttensis" pageId="9" pageNumber="24" rank="species" species="muttensis">C. muttensis</taxonomicName>
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sp. n. can be separated from its nearest species (
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<taxonomicName genus="C." lsidName="C. insolitus" pageId="9" pageNumber="24" rank="species" species="insolitus">C. insolitus</taxonomicName>
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and
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<taxonomicName genus="C." lsidName="C. castellae" pageId="9" pageNumber="24" rank="species" species="castellae">C. castellae</taxonomicName>
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sp. n.) by the following characters: tergite IX bearing a characteristic dorsal lamella-structure which is bare and slightly projecting close to the dorsal side of tergite IX; anal point triangular, widely broad at base and bearing 6 setae at base
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<pageBreakToken pageId="10" pageNumber="25" start="start">(</pageBreakToken>
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3 on each side); virga faint but present, consists of 3 long spines; inferior volsella tongue-like with distal outer margin well separated from inner margin of gonocoxite; inner margin of gonocoxite not swollen medially and lacking row of strong setae; gonostylus gradually narrowing distally, anterior area with a characteristic undulate line placed distally and reaching base of megaseta, posterior margin with a typical lob-like expansion placed medially and directed downwards.
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="11" lastPageNumber="26" pageId="10" pageNumber="25" type="description">
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<paragraph pageId="10" pageNumber="25">Description.</paragraph>
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<paragraph pageId="10" pageNumber="25">Male imago (n = 2 male adults; Figs 5, 6, 8, 58-65). A medium sized species, total length 2.90-3.00 mm. Wing length 1.60-1.75 mm (markedly short). General colouration faintly contrasting brown to dark brown. Head including palpomeres, clypeus and antennae brown to pale brown; thorax brown to dark brown, mesonotal stripes distinctly dark brown; wing pale; legs brown to dark brown. Tergites I-VIII and anal segment brown to dark brown.</paragraph>
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<paragraph pageId="10" pageNumber="25">
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Head. Eyes bare, hairs absent on median part of inner eye margin. Temporals consist of 8 setae including 5 inner and 3 outer verticals. Antenna 575-585
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long, 13-segmented; last flagellomere (Fig. 5) 135-145
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long, well clubbed, pointed apically, bearing numerous sensilla chaetica apically and lacking pre-apical seta; antennal groove beginning on segment 3 and reaching ultimate flagellomere; AR 0.30-0.35. Clypeus (Fig. 8) trapezoidal with straight sides, bearing 8-10 setae in 2 rows. Palp 5-segmented; length (µm) of segments 1-5: 30, 35, 105, 125, 180; palpomere 3 (Fig. 6) with 4-5 sparsely distributed sensilla clavata. Thorax. Lateral antepronotals 4-5; acrostichals 8-9, short and starting close to antepronotum; dorsocentrals 12-13 in 1-2 rows; prealars 4-5; humeral pit ovoid, lacking contrasting spots. Scutellum with 8 setae placed in 1 row. Wing. Brachiolum with 1 seta. Membrane densely covered with coarse punctuation. Distribution of setae on veins: R, 14-15; R1, 1-2; R2+3 12-13; remaining veins bare. Squama with 5-6 uniserial setae. Legs. Tibial spurs of PII and PIII are
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<taxonomicName class="Insecta" family="Chironomidae" genus="Chaetocladius" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Chaetocladius" order="Diptera" pageId="10" pageNumber="25" phylum="Arthropoda" rank="genus">Chaetocladius</taxonomicName>
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-type, with projecting apicolateral denticles. Sensilla chaetica present on: tibia and tarsomeres ta1- ta4 of PI; tibia and tarsomres ta1-ta3 of PII; tarsomres ta1- ta4 of PIII. Length (µm) and proportions of legs as in Table 5.
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</paragraph>
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<caption ID-Table-UUID="B66C4518E1873CF662BEEEFB2EB3D917" httpUri="http://table.plazi.org/id/B66C4518E1873CF662BEEEFB2EB3D917" pageId="10" pageNumber="25">
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<paragraph pageId="10" pageNumber="25">
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Table 5.
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<taxonomicName class="Insecta" family="Chironomidae" genus="Chaetocladius" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Chaetocladius muttensis" order="Diptera" pageId="10" pageNumber="25" phylum="Arthropoda" rank="species" species="muttensis">Chaetocladius muttensis</taxonomicName>
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sp. n. Length (µm) and proportions of legs PI, PII and PIII.
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</paragraph>
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</caption>
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<paragraph pageId="10" pageNumber="25">
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<table pageId="10" pageNumber="25">
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<tr pageId="10" pageNumber="25">
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<th colspan="1" pageId="10" pageNumber="25" rowspan="1">fe</th>
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<th colspan="1" pageId="10" pageNumber="25" rowspan="1">ti</th>
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<th colspan="1" pageId="10" pageNumber="25" rowspan="1">
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ta
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<sub pageId="10" pageNumber="25">1</sub>
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</th>
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<th colspan="1" pageId="10" pageNumber="25" rowspan="1">
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ta
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<sub pageId="10" pageNumber="25">2</sub>
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</th>
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<th colspan="1" pageId="10" pageNumber="25" rowspan="1">
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ta
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<sub pageId="10" pageNumber="25">3</sub>
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</th>
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<th colspan="1" pageId="10" pageNumber="25" rowspan="1">
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ta
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<sub pageId="10" pageNumber="25">4</sub>
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</th>
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<th colspan="1" pageId="10" pageNumber="25" rowspan="1">
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ta
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<sub pageId="10" pageNumber="25">5</sub>
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</th>
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<th colspan="1" pageId="10" pageNumber="25" rowspan="1">LR</th>
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<th colspan="1" pageId="10" pageNumber="25" rowspan="1">BV</th>
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<th colspan="1" pageId="10" pageNumber="25" rowspan="1">SV</th>
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<th colspan="1" pageId="10" pageNumber="25" rowspan="1">BR</th>
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</tr>
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</table>
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</paragraph>
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<paragraph lastPageId="11" lastPageNumber="26" pageId="10" pageNumber="25">
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Hypopygium in dorsal, ventral and lateral view as in Figs 58-65; ventral view (Fig. 59) with tergite IX and anal point removed. Tergite IX broad, sub-rectangular with nearly semi-circular to straight posterior margin; basal median area with a characteristic lamella-like structure which is weakly projecting and markedly vis
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<pageBreakToken pageId="11" pageNumber="26" start="start">ible</pageBreakToken>
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in lateral view (Fig. 62); dorsal lamella-like projection 45-50
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long, maximum width 55-60
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<normalizedToken originalValue="µm">µm</normalizedToken>
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at base, wide cup-like in dorsal view (Figs 58, 65) and long finger-like shape in lateral view (Fig. 62), bare in both dorsal and lateral sides; presence of 14-15 setae placed medially and near the posterior margin. Anal point (Figs 58, 62, 65) about 80-90
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long, maximum width at base 16-18
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<normalizedToken originalValue="µm">µm</normalizedToken>
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, uniformly elongated and reaching distal part of inferior volsella; horizontally straight (Figs 58, 62) or occasionally projecting upwards (Fig. 65); basal part wide cup-like bearing 6 setae (3 on each side); parallel-sided medially and distinctly narrowing between median part and apex. Laterosternite IX with 5 lateral setae on each side, posterior margin distinctly bi-lobed (lobes visible on each side of the base of anal point). Transverse sternapodeme arc-like, with distinct tubercle-like oral projections; lateral sternapodeme relatively short; phallapodeme projecting inwards medially. Virga (Figs 59, 60-61) faintly present, consist of 3 long curved spines. Gonocoxite about 250
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long, broad medially where maximum width is about 80
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<normalizedToken originalValue="µm">µm</normalizedToken>
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; apex of inner margin distinctly rounded and projecting inwards; ventral side (Fig. 59) wider at base and narrowed distally, inner margin with 10-11 inwardly directed setae. Inferior volsella about 110-115
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long, 55-60
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<normalizedToken originalValue="µm">µm</normalizedToken>
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maximum width; long rectangle-shaped and extending from base of gonocoxite to its distal part which is markedly truncate; distal part tongue-like, well separated from the inner margin of gonocoxite (separating part is well visible in both dorsal and ventral view, Figs 58-59); posterior margin bent inwards; apical inner part nose-like, bare and entirely hyaline in both dorsal and ventral sides. Gonostylus (Figs 58, 63-65) 120-125
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long, maximum width 40-45
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<normalizedToken originalValue="µm">µm</normalizedToken>
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; narrowing distally, anterior area with a characteristic undulate line extended from median part to base of megaseta, posterior margin rounded and bearing a typical lobe-like expansion which is placed medially and directed downwards; crista dorsalis weekly developed, swollen proximally and becoming gradually lower distally; megaseta 15-18
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long, conspicuous and slightly bent outwards.
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</paragraph>
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<caption pageId="11" pageNumber="26">
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<paragraph pageId="11" pageNumber="26">
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Figures 58-65. Male adult of
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<taxonomicName class="Insecta" family="Chironomidae" genus="Chaetocladius" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Chaetocladius muttensis" order="Diptera" pageId="11" pageNumber="26" phylum="Arthropoda" rank="species" species="muttensis">Chaetocladius muttensis</taxonomicName>
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sp. n. 58-59, hypopygium, dorsal (58) and ventral with anal point and tergite IX removed (59); 60-61, virga, two aspects; 62, tergite IX and anal point in lateral view; 63, right gonostylus, lateral; 64, left gonostylus, distal part (dorsal); 65, anal point, gonocoxite, tergite IX and gonostylus in lateral view.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection lastPageId="12" lastPageNumber="27" pageId="11" pageNumber="26" type="taxonomic position">
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<paragraph pageId="11" pageNumber="26">Taxonomic position.</paragraph>
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<paragraph lastPageId="12" lastPageNumber="27" pageId="11" pageNumber="26">
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<taxonomicName genus="C." lsidName="C. muttensis" pageId="11" pageNumber="26" rank="species" species="muttensis">C. muttensis</taxonomicName>
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sp. n. keys near
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<taxonomicName genus="C." lsidName="C. insolitus" pageId="11" pageNumber="26" rank="species" species="insolitus">C. insolitus</taxonomicName>
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and
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<taxonomicName genus="C." lsidName="C. castellae" pageId="11" pageNumber="26" rank="species" species="castellae">C. castellae</taxonomicName>
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sp. n. from which it can be separated in having: tergite IX with a characteristic dorsal cup-like lamella-structure, bare and slightly projecting (Fig. 62); anal point widely broad at base which bears about 6 setae; virga faint but present, consists of 3 long
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<pageBreakToken pageId="12" pageNumber="27" start="start">curved</pageBreakToken>
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spines; inferior volsella tongue-like with distal outer margin well separated from inner margin of gonocoxite; inner margin of gonocoxite not swollen medially and lacking row of strong setae; gonostylus (Figs 58, 63-65) gradually narrowing, anterior area with a characteristic undulate line, posterior margin with a typical lobe-like expansion placed medially and directed downwards.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="12" pageNumber="27" type="etymology">
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<paragraph pageId="12" pageNumber="27">Etymology.</paragraph>
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<paragraph pageId="12" pageNumber="27">
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The new species is named
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<taxonomicName class="Magnoliopsida" family="Asteraceae" genus="Oligochaeta" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Oligochaeta muttensis" order="Asterales" pageId="12" pageNumber="27" phylum="Tracheophyta" rank="species" species="muttensis">muttensis</taxonomicName>
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after the Swiss Alpine glacial Mutt stream, which is located in the upper basin of the
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<normalizedToken originalValue="Rhône">Rhone</normalizedToken>
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River in the central Swiss Alps.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="12" pageNumber="27" type="ecology">
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<paragraph pageId="12" pageNumber="27">Ecology.</paragraph>
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<paragraph pageId="12" pageNumber="27">
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<taxonomicName genus="C." lsidName="C. muttensis" pageId="12" pageNumber="27" rank="species" species="muttensis">C. muttensis</taxonomicName>
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sp. n. only occurs in the Mutt glacial stream where larvae are apparently confined to the lotic part of springs and the rhithral (crystalline to calcareous water). Emergence from July to early August. Associated species found in the same locality include:
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<taxonomicName genus="C." lsidName="C. laminatus" pageId="12" pageNumber="27" rank="species" species="laminatus">C. laminatus</taxonomicName>
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Brundin, 1947;
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<taxonomicName genus="C." lsidName="C. longivirgatus" pageId="12" pageNumber="27" rank="species" species="longivirgatus">C. cf. longivirgatus</taxonomicName>
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Stur & Spies, 2011;
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<taxonomicName genus="C." lsidName="C. suecicus" pageId="12" pageNumber="27" rank="species" species="suecicus">C. suecicus</taxonomicName>
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(Kieffer, 1916);
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<taxonomicName class="Insecta" family="Chironomidae" genus="Heleniella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Heleniella helvetica" order="Diptera" pageId="12" pageNumber="27" phylum="Arthropoda" rank="species" species="helvetica">Heleniella helvetica</taxonomicName>
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.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="12" pageNumber="27" type="distribution">
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<paragraph pageId="12" pageNumber="27">Geographical distribution.</paragraph>
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<paragraph pageId="12" pageNumber="27">
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<taxonomicName genus="C." lsidName="C. muttensis" pageId="12" pageNumber="27" rank="species" species="muttensis">C. muttensis</taxonomicName>
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sp. n. is only known from its type locality, which is delimited by the upper basin of the Mutt glacial stream.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |