<documentid="B41730BEA439CDA7EC786D0B3EF24E64"ID-CLB-Dataset="305799"ID-DOI="10.11646/zootaxa.5539.1.1"ID-GBIF-Dataset="fa176ed2-307a-4b37-a666-f1d25247f53b"ID-ISSN="1175-5334"ID-Zenodo-Dep="14240426"ID-ZooBank="7BDB9666-CA90-40BF-8F65-B9897CDA1F2B"IM.bibliography_approvedBy="carolina"IM.illustrations_approvedBy="felipe"IM.materialsCitations_approvedBy="carolina"IM.metadata_approvedBy="carolina"IM.taxonomicNames_approvedBy="valdenar"IM.treatmentCitations_approvedBy="carolina"IM.treatments_approvedBy="carolina"checkinTime="1732831664062"checkinUser="plazi"docAuthor="Runyon, Justin B."docDate="2024"docId="FD1A87BFA51CFFD450D3FF44FAB9FCC6"docLanguage="en"docName="zootaxa.5539.1.1.pdf"docOrigin="Zootaxa 5539 (1)"docSource="http://dx.doi.org/10.11646/zootaxa.5539.1.1"docStyle="DocumentStyle:5EBBA59367AD13919D70D935FA04F6A3.19:Zootaxa.2013-.monograph"docStyleId="5EBBA59367AD13919D70D935FA04F6A3"docStyleName="Zootaxa.2013-.monograph"docStyleVersion="19"docTitle="Calyxochaetus pennarista"docType="treatment"docVersion="10"lastPageNumber="50"masterDocId="0123FFC7A52CFFE55044FFD3FFFBFFD3"masterDocTitle="Revision of the genus Calyxochaetus Bigot (Diptera: Dolichopodidae: Sympycninae)"masterLastPageNumber="74"masterPageNumber="1"pageNumber="49"updateTime="1738760000286"updateUser="valdenar">
<taxonomicNameid="B2B34D2AA51CFFD550D3FF44FCF5FF62"authority="(Harmston & Knowlton)"baseAuthorityName="Harmston & Knowlton"baseAuthorityYear="1940"box="[151,782,151,178]"class="Insecta"family="Dolichopodidae"genus="Calyxochaetus"kingdom="Animalia"order="Diptera"pageId="48"pageNumber="49"phylum="Arthropoda"rank="species"species="pennarista">
<figureCitationid="ED882A2CA51CFFD550DBFF68FF0EFF06"box="[159,245,187,213]"captionStart="FIGURES 9–12"captionStartId="12.[151,264,1830,1854]"captionTargetBox="[244,1136,211,1804]"captionTargetId="graphics-7307@12.[285,1101,759,1033]"captionTargetPageId="12"captionText="FIGURES 9–12. Hypopygium of male Calyxochaetus. 9. C. frontalis (Loew), lateral view. 10. C. frontalis, ventral view. 11. C. pennarista (Harmston & Knowlton), lateral view, showing intromittent organs. 12. C. frontalis, ventral view of unfolded apex of postgonites. Scale bar = 0.5 mm. Abbreviations: aed—aedeagus; aed sh—broad aedeagal sheath; aed sh 2—narrow aedeagal sheath; bifid pgt—bifid apex of postgonites; cerc—cercus; d sur—dorsal lobe of surstylus; ej apod—ejaculatory apodeme; epand—epandrium; hypd—hypandrium; hypd arm—apically directed hypandrial arm; pgt—postgonites; v sur—ventral lobe of surstylus."figureDoi="http://doi.org/10.5281/zenodo.14240436"httpUri="https://zenodo.org/record/14240436/files/figure.png"pageId="48"pageNumber="49">Figs 11</figureCitation>
,
<figureCitationid="ED882A2CA51CFFD55145FF68FE0BFF06"box="[257,496,187,213]"captionStart="FIGURES 95–103"captionStartId="47.[151,264,1664,1688]"captionTargetBox="[151,1436,181,1640]"captionTargetId="figure-15@47.[151,1436,181,1640]"captionTargetPageId="47"captionText="FIGURES 95–103. Male antennae (lateral view), legs and known geographical distributions of the Calyxochaetus insolitus species group. 95. C. insolitus (Van Duzee). 96. C. pennarista (Harmston & Knowlton). 97. C. insolitus, fore tibia and tarsus, posterior view. 98. C. pennarista, fore tibia and tarsus, posterior view. Arrows show relatively long fore tarsomere 1. 99. C. insolitus, mid tarsus, posterior view. Inset shows mid tarsomeres in ventral view. 100. C. pennarista, left mid tarsus, dorsal view. 101. C. pennarista, right mid tarsus, dorsal view. 102. Known geographical distribution of C. insolitus. 103. Known geographical distribution of C. pennarista. Scale bars = 0.5 mm; arista-like styli approximately 1 mm long."figureDoi="http://doi.org/10.5281/zenodo.14240474"httpUri="https://zenodo.org/record/14240474/files/figure.png"pageId="48"pageNumber="49">96, 98, 100, 101, 103</figureCitation>
<treatmentCitationid="F41210B8A51CFFD550D3FED3FD1BFECB"author="Harmston, F. C. & Knowlton, G. F."box="[151,736,255,280]"page="399"pageId="48"pageNumber="49"year="1940">
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<bibRefCitationid="11224B58A51CFFD551C5FED3FD1BFECB"author="Harmston, F. C. & Knowlton, G. F."box="[385,736,255,280]"pageId="48"pageNumber="49"pagination="395 - 403"refId="ref72695"refString="Harmston, F. C. & Knowlton, G. F. (1940) The genus Sympycnus in Utah (Dolichopodidae: Diptera). Annals of the Entomological Society of America, 33, 395 - 403. https: // doi. org / 10.1093 / aesa / 33.2.395"type="journal article"year="1940">Harmston & Knowlton, 1940: 399</bibRefCitation>
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<bibRefCitationid="11224B58A51CFFD551E8FECDFD6FFEE5"author="Pollet, M. A. A. & Brooks, S. E. & Cumming, J. M."box="[428,660,286,310]"pageId="48"pageNumber="49"pagination="1 - 114"refId="ref73053"refString="Pollet, M. A. A., Brooks, S. E. & Cumming, J. M. (2004) Catalog of the Dolichopodidae (Diptera) of America North of Mexico. Bulletin of the American Museum of Natural History, 283, 1 - 114. https: // doi. org / 10.1206 / 0003 - 0090 (2004) 283 % 3 C 0001: COTDDO % 3 E 2.0. CO; 2"type="journal article"year="2004">
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<locationid="706C6072A51CFFD550D3FC3FFE8AFBD4"LSID="urn:lsid:plazi:treatment:FD1A87BFA51CFFD450D3FF44FAB9FCC6:706C6072A51CFFD550D3FC3FFE8AFBD4"box="[151,369,1004,1031]"country="United States of America"county="Broadwater County"latitude="46.429165"longLatPrecision="11"longitude="-109.83783"municipality="Williams Ditch"name="Wheatland County"pageId="48"pageNumber="49"stateProvince="Montana">Wheatland County</location>
:
<locationid="706C6072A51CFFD5513AFC3FFDB6FBD5"LSID="urn:lsid:plazi:treatment:FD1A87BFA51CFFD450D3FF44FAB9FCC6:706C6072A51CFFD5513AFC3FFDB6FBD5"box="[382,589,1004,1030]"country="United States of America"county="Broadwater County"latitude="46.429165"longLatPrecision="11"longitude="-109.83783"municipality="Williams Ditch"name="Musselshell River"pageId="48"pageNumber="49"stateProvince="Montana">Musselshell River</location>
,
<locationid="706C6072A51CFFD5521FFC3FFD2DFBD5"LSID="urn:lsid:plazi:treatment:FD1A87BFA51CFFD450D3FF44FAB9FCC6:706C6072A51CFFD5521FFC3FFD2DFBD5"box="[603,726,1004,1030]"country="United States of America"county="Broadwater County"latitude="46.429165"longLatPrecision="11"longitude="-109.83783"municipality="Williams Ditch"name="Harlowton"pageId="48"pageNumber="49"stateProvince="Montana">Harlowton</location>
<collectingRegionid="B777F84BA51CFFD550D3FBC2FF2DFBF8"box="[151,214,1041,1067]"country="United States of America"name="Utah"pageId="48"pageNumber="49">Utah</collectingRegion>
<locationid="706C6072A51CFFD551C0FBC3FE06FBF9"LSID="urn:lsid:plazi:treatment:FD1A87BFA51CFFD450D3FF44FAB9FCC6:706C6072A51CFFD551C0FBC3FE06FBF9"box="[388,509,1040,1066]"country="United States of America"county="Piute County"name="Marysvale"pageId="48"pageNumber="49"stateProvince="Utah">Marysvale</location>
<collectionCodeid="13A2AE6CA51CFFD55394FBC2FBDEFBF8"box="[976,1061,1041,1067]"collectionName="USA, California, Los Angeles, Los Angeles County Museum of Natural History"pageId="48"pageNumber="49">LACM</collectionCode>
Males can be recognized by having fore tarsomere 1 about half the length of fore tarsomere 2 (
<figureCitationid="ED882A2CA51CFFD5552BFBE7FF4CFBA0"captionStart="FIGURES 95–103"captionStartId="47.[151,264,1664,1688]"captionTargetBox="[151,1436,181,1640]"captionTargetId="figure-15@47.[151,1436,181,1640]"captionTargetPageId="47"captionText="FIGURES 95–103. Male antennae (lateral view), legs and known geographical distributions of the Calyxochaetus insolitus species group. 95. C. insolitus (Van Duzee). 96. C. pennarista (Harmston & Knowlton). 97. C. insolitus, fore tibia and tarsus, posterior view. 98. C. pennarista, fore tibia and tarsus, posterior view. Arrows show relatively long fore tarsomere 1. 99. C. insolitus, mid tarsus, posterior view. Inset shows mid tarsomeres in ventral view. 100. C. pennarista, left mid tarsus, dorsal view. 101. C. pennarista, right mid tarsus, dorsal view. 102. Known geographical distribution of C. insolitus. 103. Known geographical distribution of C. pennarista. Scale bars = 0.5 mm; arista-like styli approximately 1 mm long."figureDoi="http://doi.org/10.5281/zenodo.14240474"httpUri="https://zenodo.org/record/14240474/files/figure.png"pageId="48"pageNumber="49">Fig. 98</figureCitation>
). The long, fuzzy, twisted arista-like stylus that is of nearly equal width throughout (
<figureCitationid="ED882A2CA51CFFD55418FB8BFB56FBA1"box="[1116,1197,1112,1138]"captionStart="FIGURES 95–103"captionStartId="47.[151,264,1664,1688]"captionTargetBox="[151,1436,181,1640]"captionTargetId="figure-15@47.[151,1436,181,1640]"captionTargetPageId="47"captionText="FIGURES 95–103. Male antennae (lateral view), legs and known geographical distributions of the Calyxochaetus insolitus species group. 95. C. insolitus (Van Duzee). 96. C. pennarista (Harmston & Knowlton). 97. C. insolitus, fore tibia and tarsus, posterior view. 98. C. pennarista, fore tibia and tarsus, posterior view. Arrows show relatively long fore tarsomere 1. 99. C. insolitus, mid tarsus, posterior view. Inset shows mid tarsomeres in ventral view. 100. C. pennarista, left mid tarsus, dorsal view. 101. C. pennarista, right mid tarsus, dorsal view. 102. Known geographical distribution of C. insolitus. 103. Known geographical distribution of C. pennarista. Scale bars = 0.5 mm; arista-like styli approximately 1 mm long."figureDoi="http://doi.org/10.5281/zenodo.14240474"httpUri="https://zenodo.org/record/14240474/files/figure.png"pageId="48"pageNumber="49">Fig. 96</figureCitation>
) and hind femur with long ventral setae on basal half further separate males from other
Frons with thick brown pruinosity, hardly sparser on either side of ocellar tubercle. Face silver-gray, narrow, triangular, about one ommatidium wide at clypeus. Antenna (
<figureCitationid="ED882A2CA51CFFD5514CFB3BFEA6FAD1"box="[264,349,1256,1282]"captionStart="FIGURES 95–103"captionStartId="47.[151,264,1664,1688]"captionTargetBox="[151,1436,181,1640]"captionTargetId="figure-15@47.[151,1436,181,1640]"captionTargetPageId="47"captionText="FIGURES 95–103. Male antennae (lateral view), legs and known geographical distributions of the Calyxochaetus insolitus species group. 95. C. insolitus (Van Duzee). 96. C. pennarista (Harmston & Knowlton). 97. C. insolitus, fore tibia and tarsus, posterior view. 98. C. pennarista, fore tibia and tarsus, posterior view. Arrows show relatively long fore tarsomere 1. 99. C. insolitus, mid tarsus, posterior view. Inset shows mid tarsomeres in ventral view. 100. C. pennarista, left mid tarsus, dorsal view. 101. C. pennarista, right mid tarsus, dorsal view. 102. Known geographical distribution of C. insolitus. 103. Known geographical distribution of C. pennarista. Scale bars = 0.5 mm; arista-like styli approximately 1 mm long."figureDoi="http://doi.org/10.5281/zenodo.14240474"httpUri="https://zenodo.org/record/14240474/files/figure.png"pageId="48"pageNumber="49">Fig. 96</figureCitation>
) brown with scape and pedicel brown-yellow; scape laterally flattened, flared apically, longer than combined length of pedicel and postpedicel; postpedicel elongate oval with ventral margin curved, dorsal margin nearly straight, about 1.5X as long as wide; arista-like stylus long, densely pubescent with microtrichia, twisted, slightly thickened and of nearly equal width throughout; article 1 rather thick and longer than postpedicel length. Palpus small, elongate oval, brown with paler apex and small whitish setulae.
<figureCitationid="ED882A2CA51CFFD5549AFA4FFAC8FA64"box="[1246,1331,1436,1463]"captionStart="FIGURES 95–103"captionStartId="47.[151,264,1664,1688]"captionTargetBox="[151,1436,181,1640]"captionTargetId="figure-15@47.[151,1436,181,1640]"captionTargetPageId="47"captionText="FIGURES 95–103. Male antennae (lateral view), legs and known geographical distributions of the Calyxochaetus insolitus species group. 95. C. insolitus (Van Duzee). 96. C. pennarista (Harmston & Knowlton). 97. C. insolitus, fore tibia and tarsus, posterior view. 98. C. pennarista, fore tibia and tarsus, posterior view. Arrows show relatively long fore tarsomere 1. 99. C. insolitus, mid tarsus, posterior view. Inset shows mid tarsomeres in ventral view. 100. C. pennarista, left mid tarsus, dorsal view. 101. C. pennarista, right mid tarsus, dorsal view. 102. Known geographical distribution of C. insolitus. 103. Known geographical distribution of C. pennarista. Scale bars = 0.5 mm; arista-like styli approximately 1 mm long."figureDoi="http://doi.org/10.5281/zenodo.14240474"httpUri="https://zenodo.org/record/14240474/files/figure.png"pageId="48"pageNumber="49">Fig. 98</figureCitation>
): Yellow, except apex of tarsomere 1 brown, tarsus brown from apex of tarsomere 2. Tibia not swollen, a few specimens have very small posterodorsal seta near 1/3. Tarsomere 1 about half length of tarsomere 2.
: Yellow, except coxa infuscated, tarsus brown from about apical third of tarsomere 1. Femur with 4–6 fine ventral setae near base (length subequal to femur width). Tibia slightly bowed in anterior view, with longer than normal anterodorsal setae (near 1/3 and 1/2), about 2X length of posterodorsal seta (near 1/3), with row of slightly longer anteroventral setae (subequal to tibia width) and posterior row of short black setae on apical half. Tarsus directionally asymmetrical (
<figureCitationid="ED882A2CA51CFFD55575F9A7FF3FF960"captionStart="FIGURES 95–103"captionStartId="47.[151,264,1664,1688]"captionTargetBox="[151,1436,181,1640]"captionTargetId="figure-15@47.[151,1436,181,1640]"captionTargetPageId="47"captionText="FIGURES 95–103. Male antennae (lateral view), legs and known geographical distributions of the Calyxochaetus insolitus species group. 95. C. insolitus (Van Duzee). 96. C. pennarista (Harmston & Knowlton). 97. C. insolitus, fore tibia and tarsus, posterior view. 98. C. pennarista, fore tibia and tarsus, posterior view. Arrows show relatively long fore tarsomere 1. 99. C. insolitus, mid tarsus, posterior view. Inset shows mid tarsomeres in ventral view. 100. C. pennarista, left mid tarsus, dorsal view. 101. C. pennarista, right mid tarsus, dorsal view. 102. Known geographical distribution of C. insolitus. 103. Known geographical distribution of C. pennarista. Scale bars = 0.5 mm; arista-like styli approximately 1 mm long."figureDoi="http://doi.org/10.5281/zenodo.14240474"httpUri="https://zenodo.org/record/14240474/files/figure.png"pageId="48"pageNumber="49">Figs 100, 101</figureCitation>
). Right side of body with tarsomere 1 slightly longer than left tarsomere 1, both slightly bowed in dorsal view, with posteroventral row of about 6 small black setae on basal half. Right tarsomeres 2–4 each slightly broadened, nearly round in dorsal view whereas left tarsomeres 2–4 not broadened and twice as long as wide, both sides with ventral surfaces slightly flattened and dense anterior and ventral setulae. Right tarsomere 5 about 1.5X longer than tarsomere 4, left tarsomere 5 subequal in length to tarsomere 4.
: Yellow, except tibia becoming brown on apical third, tarsus brown. Femur with 2–5 slender ventral setae on basal half, at least as long as femur width. Tibia without specialized ventral setae near base. Tarsomere 1 subequal in length to tarsomere 2.
Mostly tinged with light brown, hyaline on approximately posterior third of wing. Elongate oval and narrow with anal lobe gradually narrowed at base; posterior margin evenly rounded. Distal section of M
<figureCitationid="ED882A2CA51DFFD45307FF44FC6DFF62"box="[835,918,151,177]"captionStart="FIGURES 9–12"captionStartId="12.[151,264,1830,1854]"captionTargetBox="[244,1136,211,1804]"captionTargetId="graphics-7307@12.[285,1101,759,1033]"captionTargetPageId="12"captionText="FIGURES 9–12. Hypopygium of male Calyxochaetus. 9. C. frontalis (Loew), lateral view. 10. C. frontalis, ventral view. 11. C. pennarista (Harmston & Knowlton), lateral view, showing intromittent organs. 12. C. frontalis, ventral view of unfolded apex of postgonites. Scale bar = 0.5 mm. Abbreviations: aed—aedeagus; aed sh—broad aedeagal sheath; aed sh 2—narrow aedeagal sheath; bifid pgt—bifid apex of postgonites; cerc—cercus; d sur—dorsal lobe of surstylus; ej apod—ejaculatory apodeme; epand—epandrium; hypd—hypandrium; hypd arm—apically directed hypandrial arm; pgt—postgonites; v sur—ventral lobe of surstylus."figureDoi="http://doi.org/10.5281/zenodo.14240436"httpUri="https://zenodo.org/record/14240436/files/figure.png"pageId="49"pageNumber="50">Fig. 11</figureCitation>
): Postgonites with apical lobes narrow, rather pointed, usually darker brown along dorsal edge.
Face wider (subequal to postpedicel width), nearly parallel-sided, gray. Antenna with scape as long as combined length of pedicel and postpedicel; postpedicel slightly wider than long, weakly pointed apically near dorsal edge, ventral margin curved; arista-like stylus unmodified. Palpus much larger, triangular, rounded apically, dark brown with light gray pruinosity and yellow setae.
Unmodified, without specialized setae, bilaterally symmetrical. Mid tibia with anterodorsal setae (near 1/3 and 1/2) about 1.5X longer than posterodorsal seta (near 1/3). Hind tibia light brown apically. Hind tarsomere 1 subequal in length of tarsomere 2.
Tergite 2 almost wholly yellow, narrowly brown along posterior margin. Tergite 3 about half yellow laterally, brown dorsally and posteriorly, remaining tergites dark brown.
<emphasisid="47C7EABBA51DFFD45083FD95FD76FDB2"bold="true"box="[199,653,582,609]"pageId="49"pageNumber="50">Distribution and seasonal occurrence.</emphasis>
Most specimens are from the central and northern Rocky Mountains of the
<collectingCountryid="0DA47639A51DFFD450A5FDB8FEECFD56"box="[225,279,619,645]"name="United States of America"pageId="49"pageNumber="50">USA</collectingCountry>
with outlying records from eastern
<collectingRegionid="B777F84BA51DFFD452F4FDB8FCD9FD56"box="[688,802,619,645]"country="United States of America"name="California"pageId="49"pageNumber="50">California</collectingRegion>
<figureCitationid="ED882A2CA51DFFD45568FDB8FA6BFD56"box="[1324,1424,619,645]"captionStart="FIGURES 95–103"captionStartId="47.[151,264,1664,1688]"captionTargetBox="[151,1436,181,1640]"captionTargetId="figure-15@47.[151,1436,181,1640]"captionTargetPageId="47"captionText="FIGURES 95–103. Male antennae (lateral view), legs and known geographical distributions of the Calyxochaetus insolitus species group. 95. C. insolitus (Van Duzee). 96. C. pennarista (Harmston & Knowlton). 97. C. insolitus, fore tibia and tarsus, posterior view. 98. C. pennarista, fore tibia and tarsus, posterior view. Arrows show relatively long fore tarsomere 1. 99. C. insolitus, mid tarsus, posterior view. Inset shows mid tarsomeres in ventral view. 100. C. pennarista, left mid tarsus, dorsal view. 101. C. pennarista, right mid tarsus, dorsal view. 102. Known geographical distribution of C. insolitus. 103. Known geographical distribution of C. pennarista. Scale bars = 0.5 mm; arista-like styli approximately 1 mm long."figureDoi="http://doi.org/10.5281/zenodo.14240474"httpUri="https://zenodo.org/record/14240474/files/figure.png"pageId="49"pageNumber="50">Fig. 103</figureCitation>
). Adults have been collected June to early September.