Cyrtopogon Loew

Lavigne, Robert J. & Dennis, Steve, 2019, Robber flies (Insecta: Diptera: Asilidae) of Wyoming, USA with keys to genera and species, Zootaxa 4662 (1), pp. 1-126: 62-63

publication ID

https://doi.org/10.11646/zootaxa.4662.1.1

publication LSID

lsid:zoobank.org:pub:366A1E81-946C-4ED4-8A65-C51151FE87CC

persistent identifier

http://treatment.plazi.org/id/7708F17A-B81F-E522-63F1-FB2166F0FA21

treatment provided by

Plazi

scientific name

Cyrtopogon Loew
status

 

Cyrtopogon Loew 

Cyrtopogon Loew, 1847: 516  .

Species found in Wyoming: Cyrtopogon albifrons  , albovarians  , C. auratus  , C. banksi  , C. bimaculus  , C. caesius  , C. callipedilus  , C. curtistylus  , C. fumipennis  , C. glarealis  , C. hollandi  sp. nov., C. infuscatus  , C. inversus  , C. martini  sp. nov., C. montanus wilcoxi  , C. platycaudus  , C. plausor  , C. praepes  , C. pulcher  , C. rufotarsus  , C. sabroskyi  , and C. willistoni  .

Key to Species [adapted from Melander (1923b); Wilcox & Martin (1936)]

1 Scutellum convex, mostly shining, sometimes with a transverse spot of pollen at the base; in profile the face usually strongly gibbous and the antennae usually situated at about three-fourths the height of the head; more densely pilose and less pollinose species.............................................................................................. 2

- Scutellum more or less flattened and largely or entirely pollinose; in profile the face usually not so strongly gibbous and the antennae usually situated at about one-half the height of the head; less pilose and more densely pollinose species........ 16

2 Third antennal segment orange, yellowish red or red; tibiae and tarsi more or less reddish............................ 3

- Antennae wholly black................................................................................. 6

3 Male abdominal tergites 2–4 with dense tufted yellow or black pile; mystax yellow, black below or on margin............ 4

- Male abdomen without dense pile as above; mystax all or mostly black.......................................... 5

4 Abdominal segments 2–4 with tufts of yellow or golden pile; and with posterior silver pollinose bands; mystax yellow above, black below; first two antennal segments with black pile....................................... Cyrtopogon auratus 

- Abdominal segment 1 sides and whole of segments 2–4 reddish-yellow pollinose; mystax yellow, with oral margin broadly black setae; first two antennal segments yellowish pollinose................................ Cyrtopogon platycaudus 

5. On males, lateral setae on abdominal segment 1 long, straw white, segment 2 long, brown, segment 3 short, black...................................................................................... Cyrtopogon martini  sp. nov.

- On males, lateral setae on abdominal segments 1–3 yellow to yellowish white, remaining segments black; female all lateral setae on abdominal segments yellow to yellowish white........................................ Cyrtopogon pulcher 

6. Abdomen with dense, erect pile at least covering the dorsum; segment 1 reddish yellow, segments 2–4 orange............................................................................................... Cyrtopogon curtisytlus 

- Abdomen without dense pile on dorsum as above............................................................ 7

7 At least the last two segments of the middle tarsi of the males with a broad disc of black setae; male fore tarsi silvery pilose above; face at the antennae subequal in width to the width of one eye, strongly gibbous.............................. 8

- Middle tarsi of the males without disc of black setae; face usually narrower than the eyes and not so strongly gibbous.... 11

8 Pad of black setae on the middle tarsi confined to the last two segments and very broad, total width of hairs about six times the width of the segments; silvery white setae on the male fore tarsi parted on all segments........... Cyrtopogon callipedilus 

- Pad of black setae on the middle tarsi not much more than three times the width of the segments and not always confined to the last two joints; silvery setae on the male fore tarsi not parted on all segments...................................... 9

9 Setae of the abdomen and thorax in both sexes yellowish-white................................. Cyrtopogon plausor 

- Setae of the abdomen and thorax always at least partly black in both sexes...................................... 10

10 Joints 1–5 of male fore tarsi with a narrow crest of silvery setae not noticeably expanded apically; legs entirely black; setae of the body mostly black, first two abdominal segments yellow setae; hind femora yellowish setae........ Cyrtopogon praepes 

- Silvery setae on male fore tarsi confined to joints 2–5, noticeably expanded apically; tibiae and tarsi usually reddish but sometimes entirely black; usually more than the two basal abdominal segments pale setae hind femora black setae................................................................................................ Cyrtopogon willistoni 

11 Wings of the male with a large apical brown cloud and a smaller cloud covering the apex of the anal cell, female wings more or less darkened in the same regions; pleura largely shining black............................... Cyrtopogon bimacula 

- Wings not bimaculate; pleura more extensively pollinose..................................................... 12

12 Tibiae yellow to red or black, and tarsi pale yellow to red or reddish brown....................................... 13

- Legs black, hind tibiae sometimes dark reddish............................................................. 14

13 Meral pile entirely black; tibiae black, tarsi reddish brown.............................. Cyrtopogon montanus wilcoxi 

- Meral pile white or partly white; tibiae and tarsi pale yellow to red........................... Cyrtopogon albovarians 

14 Fore tarsi of males not silvery to white pilose above; fasciae of abdominal tergites 2–4 entire or nearly so.............. 15

- Male fore tarsi silvery to white pilose above; fasciae of the abdomen rather broadly interrupted on at least segments 2–6...................................................................................... Cyrtopogon rufotarsus 

15 Setae on antennal segments black; mystax largely white; pile on female abdomen black.............. Cyrtopogon inversus 

- Setae on antennal segments white; mystax white above, black on sides and below; pile on female abdomen white...................................................................................... Cyrtopogon hollandi  sp. nov.

16 Pollinose fasciae on first abdominal segment entire......................................................... 17

- Fasciae on first abdominal segment narrowly to broadly interrupted............................................ 20

17 Bristles of tibiae largely black.......................................................................... 18

- Bristles of tibiae largely white.......................................................................... 19

18 Scutellar setae brown; haltere stem yellowish, knob rosy; mystax white........................... Cyrtopogon caesius 

- Scutellar setae sparse, black; haltere stem brown, knob yellowish white; mystax black............ Cyrtopogon fumipennis 

19 Scutellar setae white; haltere stem dark brown, knob yellow.................................. Cyrtopogon sabroskyi 

- Scutellar setae black; haltere stem brown, know light brown.................................. Cyrtopogon infuscatus 

20 Fasciae on first abdominal segment broadly interrupted, wings hyaline............................. Cyrtopogon banksi 

- Fasciae on first abdominal segment narrowly interrupted, wings tinged with brown................. Cyrtopogon albifrons 

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Asilidae

Loc

Cyrtopogon Loew

Lavigne, Robert J. & Dennis, Steve 2019
2019
Loc

Cyrtopogon Loew, 1847: 516

Loew, H. 1847: 516