102 lines
11 KiB
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102 lines
11 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.322.5492" ID-GBIF-Dataset="36ad3806-c865-4b7b-9d42-8d190cfd5d97" ID-PMC="PMC3760220" ID-Pensoft-Pub="1313-2970-322-1" ID-PubMed="24003312" ModsDocAuthor="" ModsDocDate="2013" ModsDocID="1313-2970-322-1" ModsDocOrigin="ZooKeys 322" ModsDocTitle="The Mecyclothorax beetles (Coleoptera, Carabidae, Moriomorphini) of Tahiti, Society Islands" checkinTime="1451247045918" checkinUser="pensoft" docAuthor="Liebherr, James K." docDate="2013" docId="A28A44E8F4AA766CD08E91F239F25D8C" docLanguage="en" docName="ZooKeys 322: 1-170" docOrigin="ZooKeys 322" docSource="http://dx.doi.org/10.3897/zookeys.322.5492" docTitle="Mecyclothorax globosus Britton, 1948: 113; Perrault, 1978 b: 152; 1989" docType="treatment" docVersion="3" lastPageNumber="109" masterDocId="20750D3CFFB5F54CB8239531171AFFB8" masterDocTitle="The Mecyclothorax beetles (Coleoptera, Carabidae, Moriomorphini) of Tahiti, Society Islands" masterLastPageNumber="170" masterPageNumber="1" pageNumber="108" updateTime="1668156297693" 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>The Mecyclothorax beetles (Coleoptera, Carabidae, Moriomorphini) of Tahiti, Society Islands</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Liebherr, James K.</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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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>322</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>170</mods:end>
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<mods:url>http://dx.doi.org/10.3897/zookeys.322.5492</mods:url>
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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.322.5492</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-322-1</mods:identifier>
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<treatment ID-GBIF-Taxon="152047099" LSID="urn:lsid:plazi:treatment:A28A44E8F4AA766CD08E91F239F25D8C" httpUri="http://treatment.plazi.org/id/A28A44E8F4AA766CD08E91F239F25D8C" lastPageId="108" lastPageNumber="109" pageId="107" pageNumber="108">
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<subSubSection pageId="107" pageNumber="108" type="nomenclature">
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<paragraph pageId="107" pageNumber="108">
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91.
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<taxonomicName LSID="http://species-id.net/wiki/Mecyclothorax_globosus" authority="Britton, 1948: 113; Perrault, 1978 b: 152; 1989: 60" class="Insecta" family="Carabidae" genus="Mecyclothorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mecyclothorax globosus" order="Coleoptera" pageId="107" pageNumber="108" phylum="Arthropoda" rank="species" species="globosus">Mecyclothorax globosus Britton, 1948: 113; Perrault, 1978b: 152; 1989: 60</taxonomicName>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="107" pageNumber="108" type="reference_group">
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<paragraph pageId="107" pageNumber="108">
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<taxonomicName class="Insecta" family="Carabidae" genus="Thriscothorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Thriscothorax constrictus" order="Coleoptera" pageId="107" pageNumber="108" phylum="Arthropoda" rank="species" species="constrictus">Thriscothorax constrictus</taxonomicName>
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Britton, 1938: 104 (junior homonym;
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<bibRefCitation author="Britton, EB" journalOrPublisher="Bishop Museum" pageId="125" pageNumber="126" pagination="107 - 166" title="A revision of the Hawaiian species of Mecyclothorax (Coleoptera: Carabidae). Occasional Papers of Bernice P." volume="19" year="1948">Britton 1948</bibRefCitation>
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).
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="108" lastPageNumber="109" pageId="107" pageNumber="108" type="identification">
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<paragraph pageId="107" pageNumber="108">Identification.</paragraph>
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<paragraph pageId="107" pageNumber="108">
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Among the
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<taxonomicName class="Insecta" family="Carabidae" genus="Mecyclothorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mecyclothorax globosus" order="Coleoptera" pageId="107" pageNumber="108" phylum="Arthropoda" rank="species" species="globosus">Mecyclothorax globosus</taxonomicName>
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group species with two supraorbital setae each side and only the anterior dorsal elytral setae, setal formula 2111, this species can be diagnosed from all but
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<taxonomicName class="Insecta" family="Carabidae" genus="Mecyclothorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mecyclothorax paraglobosus" order="Coleoptera" pageId="107" pageNumber="108" phylum="Arthropoda" rank="species" species="paraglobosus">Mecyclothorax paraglobosus</taxonomicName>
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by: 1, small body size, standardized body length 3.5-4.1 mm; 2, broadly ovate and convexly domed elytra (Fig. 46B); 3, basally constricted pronotum, MPW/BPW = 1.53-1.64 (n = 5); and 4, discal elytral intervals covered with an evident transverse mesh, sculpticells isodiametric to transverse with breadth 2
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<normalizedToken originalValue="×">x</normalizedToken>
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length. This species can be reliably diagnosed from
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<taxonomicName class="Insecta" family="Carabidae" genus="Mecyclothorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mecyclothorax paraglobosus" order="Coleoptera" pageId="107" pageNumber="108" phylum="Arthropoda" rank="species" species="paraglobosus">Mecyclothorax paraglobosus</taxonomicName>
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only by the conformation of the male aedeagal median lobe. In males of this species, the lobe apex is short and broadly rounded with little to no expansion dorsoventrally from the apex of the ostial opening to the tip (Figs 47
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<normalizedToken originalValue="A–C">A-C</normalizedToken>
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). The median lobe apex varies in dorsoventral breadth (Fig. 47B versus 47C), but it is always short relative to its breadth. The male aedeagal median lobe of
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<taxonomicName class="Insecta" family="Carabidae" genus="Mecyclothorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mecyclothorax paraglobosus" order="Coleoptera" pageId="107" pageNumber="108" phylum="Arthropoda" rank="species" species="paraglobosus">Mecyclothorax paraglobosus</taxonomicName>
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males, in contrast, is more elongate apicad the ostial opening, with the tip slightly expanded and asymmetrically downturned (Fig. 47D).
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<bibRefCitation author="Perrault, GG" journalOrPublisher="Nouvelle Revue d'Entomologie (NS)" pageId="129" pageNumber="130" pagination="57 - 70" title="La faune des Carabidae de Tahiti: IX. revision du genre Mecyclothorax (Sharp) (Psydrini) 4. le groupe de M. globosus Britton (Coleoptera)." volume="6" year="1989">Perrault (1989)</bibRefCitation>
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diagnosed these two species using pronotal dimensions, characterizing
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<taxonomicName class="Insecta" family="Carabidae" genus="Mecyclothorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mecyclothorax paraglobosus" order="Coleoptera" pageId="107" pageNumber="108" phylum="Arthropoda" rank="species" species="paraglobosus">Mecyclothorax paraglobosus</taxonomicName>
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by a more transverse pronotum. At the extremes this is so, but the ratios of MPW/PL and MPW/BPW overlap substantially precluding diagnosis. In this species MPW/BPW = 1.53-1.64 (n = 5), and MPW/PL = 1.21-1.28. The frons and vertex bear shallow transverse-mesh microsculpture, the sculpticells on the neck more developed and therefore visible in reflected light. The pronotal disc is covered with an evident transverse mesh, sculpticell breadth 2
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<normalizedToken originalValue="–4×">-4x</normalizedToken>
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length. Standardized body length 3.5-4.1 mm.
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</paragraph>
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<paragraph lastPageId="108" lastPageNumber="109" pageId="107" pageNumber="108">
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Variation. Limited setal variation occurs among individuals of this abundant, geographically widespread species. A large series of 77 individuals - Mt. Marau, 1335 m el., 15-ix-2006 lot 01 (CUIC) - includes 2 individuals with just the posterior supraor
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<pageBreakToken pageId="108" pageNumber="109" start="start">bital</pageBreakToken>
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seta, 1 with two supraorbital setae on the right side versus one on the left, and 74 with the usual 2111setal formula.
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<bibRefCitation author="Perrault, GG" journalOrPublisher="Nouvelle Revue d'Entomologie" pageId="129" pageNumber="130" pagination="133 - 162" title="La faune des Carabidae de Tahiti II. genre Mecyclothorax (Sharp)." volume="8" year="1978 b">Perrault (1978b)</bibRefCitation>
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noted that some individuals unilaterally possessed two dorsal elytral setae, however in the much larger amount of comparative material available in 1989, he stated that the species is essentially invariant (
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<bibRefCitation author="Perrault, GG" journalOrPublisher="Nouvelle Revue d'Entomologie (NS)" pageId="129" pageNumber="130" pagination="57 - 70" title="La faune des Carabidae de Tahiti: IX. revision du genre Mecyclothorax (Sharp) (Psydrini) 4. le groupe de M. globosus Britton (Coleoptera)." volume="6" year="1989">Perrault 1989</bibRefCitation>
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), indicating that such setal sports are exceedingly rare.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="108" pageNumber="109" type="distribution">
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<paragraph pageId="108" pageNumber="109">Distribution and habitat.</paragraph>
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<paragraph pageId="108" pageNumber="109">
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This species is broadly distributed on Monts Marau and Aorai, with recorded localities from 1100-1380 m elevation on the former, and 1067-1900 m elevation on the latter. Based on pyrethrin fog samples, these beetles occupy moss-covered
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<taxonomicName class="Magnoliopsida" family="Cunoniaceae" genus="Weinmannia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Weinmannia" order="Oxalidales" pageId="108" pageNumber="109" phylum="Tracheophyta" rank="genus">Weinmannia</taxonomicName>
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growth, ferns (both low ferns such as
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<taxonomicName class="Polypodiopsida" family="Gleicheniaceae" genus="Dicranopteris" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Dicranopteris" order="Gleicheniales" pageId="108" pageNumber="109" phylum="Tracheophyta" rank="genus">Dicranopteris</taxonomicName>
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, and also
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<taxonomicName class="Polypodiopsida" family="Cyatheaceae" genus="Cyathea" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Cyathea" order="Cyatheales" pageId="108" pageNumber="109" phylum="Tracheophyta" rank="genus">Cyathea</taxonomicName>
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tree ferns), and the axils of
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<taxonomicName class="Liliopsida" family="Pandanaceae" genus="Freycinetia" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Freycinetia" order="Pandanales" pageId="108" pageNumber="109" phylum="Tracheophyta" rank="genus">Freycinetia</taxonomicName>
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plants, perferrably dead and rotting, the more likely to provide food sources such as dipteran larvae. During recent surveys, of the 318 specimens of
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<taxonomicName class="Insecta" family="Carabidae" genus="Mecyclothorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mecyclothorax" order="Coleoptera" pageId="108" pageNumber="109" phylum="Arthropoda" rank="genus">Mecyclothorax</taxonomicName>
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collected on Mont Marau,
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<taxonomicName class="Insecta" family="Carabidae" genus="Mecyclothorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mecyclothorax globosus" order="Coleoptera" pageId="108" pageNumber="109" phylum="Arthropoda" rank="species" species="globosus">Mecyclothorax globosus</taxonomicName>
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individuals accounted for 151.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |