Efferia Coquillett

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: 33-35

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-B802-E53E-63F1-F8EA66F0FE8B

treatment provided by

Plazi

scientific name

Efferia Coquillett
status

 

Efferia Coquillett  Group

Efferia Coquillett, 1893b: 175  . Species found in Wyoming: Albibarbefferia albibarbis  , Aridefferia arid  a, A. snowi, Carinefferia costalis  , C. cressoni  , C. jubata  , C. prolifica  , C. subcuprea  , Nerax aestuans  , Pogonioefferia benedicti  , P. bicaudata  , P. dubius  , P. frewingi  , P. helenae  , P. kelloggi  , P. pallidula  , P. pogonias  , P. rapax  , P. staminea  , and P. varipes  .

Key to Species [adapted from Hine (1919) (as Erax  ); Wilcox (1966b) (as Efferia  )]

1 Forking of third vein (R 4+5) distinctly before the medio-cubital crossvein (m-cu; discalcrossvein of authors) or base of the second posterior cell ( Fig. 2CView FIGURE 2)............................................................................. 2

- Forking of third vein opposite or beyond the medio-cubital crossvein or base of the second posterior cell............... 12

2 Male abdominal segments 6 and 7 only, silvery white pollinose, ovipositor of female viewed from above pointed and split at tip.................................................................................................. 3

- Male abdomen with several segments grayish pollinose; ovipositor of female rounded at tip and not split................ 7

3 Scutellar bristles all or largely black...................................................................... 4

- Scutellar bristles in part or largely white................................................................... 6

4 Scutellar setae largely white; mystax white with some black bristles in male, 8–16 in female; male abdominal segments 1–4 dorsally and 2–3 ventrally with black setae, female abdominal segments white setae ventrally, dorsally sometimes with narrow center line of black setae; male setae on femora largely white, with short black above and longer below, female setae on legs and several bristles basally on femora white.............................................. Pogonioefferia frewingi 

- Scutellar setae black: mystax yellow or white, usually with black bristles; male abdominal segments 1–5 dorsally and 2–5 ventrally with black setae; female abdominal segments 1–7 dorsally and 2–3 or 2–7 at least ventrally with black setae; setae on legs black or white.................................................................................... 5

5 Mystax yellow to light reddish brown, male usually with a few black bristles below; black setae on the femora and tibiae.................................................................................... Pogonioefferia pogonias 

- Mystax white, male usually with black bristles above and below laterally; female usually with more than 20 black bristles; femora with mostly black setae; tibiae with long white and ventrally long black setae............. Pogonioefferia kelloggi 

6 Mystax white usually with 19 black bristle and a few black setae below; basistyle of male genitalia forked, the upper arm short pointed inward, 2/5 the length of lower arm; female abdominal tergites 6 and 7 with short white setae only................................................................................................ Pogonioefferia bicaudata 

- Mystax white with 4–5 black bristles below laterally and a few black setae below; upper arm of basistyle of male lacking; female abdominal tergites 6 and 7 with patch of short black setae dorsocentrally................. Pogonioefferia helenae 

7 Mystax yellow to yellowish white........................................................................ 8

- Mystax white....................................................................................... 10

8 Tibiae and tarsi yellowish red to largely red except tips of tibiae; scutellar bristles black on margin in both sexes............................................................................................. Pogonioefferia dubius 

- Tibiae black to reddish, tarsi black to reddish black; scutellar bristlesblack on males, white to yellowish on females....... 9

9 In males, abdominal tergite 3 basally and dorsomedially with patch of short black setae; lower arm of basistyle short, fringe golden, short sparse, shorter than basal two antennal segments combined.......................... Pogonioefferia rapax 

- In males, abdominal tergite 3 with at most 5–6 short black setae dorsomedially; lower arm of basistyle long, curved downward, fringe as long as basal two antennal segments combined................................... Pogonioefferia staminea 

10 Blackish gray species; postpronotal (humeral of authors) setae yellowish; meral (hypopleural of authors) bristles yellowish; posterior side of femora red or with reddish stripe........................................... Pogonioefferia varipes 

- Silver and gray species; postpronotal setae at least white anteriorly and/or along margins; femora black................ 11

11 Sternite 8 of male produced apically with long black setae, basistyle abruptly right angled subapically; ocellar bristles of female usually white...................................................................... Pogonioefferia pallidula 

- Sternite 8 of male produced apically with long white setae, gently subapically curved basistyle; ocellar bristles of female black............................................................................ Pogonioefferia benedicti 

12 Posterior branch of third vein curves backward at tip and meets the costa beyond the apex of the wing....... Nerax aestuans 

- Posterior branch of third vein curves forward and meets the costa well before the apex............................. 13

13 Mesonotum compressed laterally with a narrow crest of long setae or bristles on mid-dorsal line; wings of male with costa thickened or dilated at 4/5th its length.................................................................... 14

- Mesonotum not compressed laterally, no crest of long black setae or bristles on mid-dorsal line; wings of male without costa thickened or dilated.................................................................................. 18

14 Setae of scutellum predominantly black, numerous long and bristly............................................. 15

- Setae of scutellum, aside from black marginal bristles, white.................................................. 16

15 Male abdominal segments 1–5 mostly black, 6–7 silvery pollinose; segment 5 with short black setae; sternite 9 visible as two shining lobes; female ovipositor constricted between segments 8–9, tergite 9 rugose on upper half....... Carinefferia jubata 

- Male abdominal segments 1–4 mostly black, 5–7 silvery pollinose; segment 5 with long white setae apically; sternite 9 not visible; female ovipositor not constricted, tergite 9 mostly polished with a small dorsal rugose area....... Carinefferia prolifica 

16 Mesonotal crest of setae and bristles sparse with long black bristles and numerous short setae......... Carinefferia cressoni 

- Mesonotal crest of setae dense with long black bristles and setae............................................... 17

17 Mesonotal crest curved backwards and setae as long as antennal segments 1–3; setae of epandrium (surstyli) of male genitalia black; meral (hypopleural of authors) bristles of female black................................ Carinefferia subcuprea 

- Mesonotal crest with straight black setae as long as antennal segments 1–2, with some black setae curved backwards; setae of epandrium largely white; meral bristles of female straw white to white............................ Carinefferia costalis 

18 Mesonotum anteriorly usually with setae shorter than antennal segments 1–2; scutellum with 8 white marginal bristles; femora black, tibiae and tarsi yellowish red, tops darker, tarsal bristles usually black.................. Albibarbefferia albibarbis 

- Mesonotum anteriorly with numerous erect setae as long as antennal segments 1–3; scutellum usually with numerous white or pale yellowish and black marginal bristles; legs all or largely black; tarsal bristles usually white...................... 19

19 Mystax yellowish, sometimes with some black setae below on the sides; wings faintly yellowish hyaline; at least 3 abdominal segments thinly yellowish pollinose laterally, pale yellowish, long setae on sides; basal 1/4–1/2 of fore and mid tibiae and hind tibiae faintly reddish...................................................................... Aridefferia snowi 

- Mystax white, at most with a few black setae below; wings hyaline; abdomen black to brownish, gray pollinose, setae white on at least sides of some segments; legs all black.................................................. Aridefferia arida 

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Asilidae

Loc

Efferia Coquillett

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

Efferia

Coquillett, D. W. 1893: 175