Efferia bromleyi, Scarbrough & Perez-Gelabert, 2008

Scarbrough, Aubrey G. & Perez-Gelabert, Daniel E., 2008, Review of the West Indian species of Efferia Coquillett (Diptera: Asilidae): Part 1. Bahamas, Cayman Islands, Cuba, and Jamaica, Insecta Mundi 2008 (49), pp. 1-29 : 5-6

Key to the species of Efferia from the Bahamas, Cayman Island, Cuba, and Jamaica

1. Base of cell r 4 beyond apex of cell d; R 5 curved posteriorly, joining costa at or beyond wing apex (Fig. 2); body and femora usually dark brown; aestuans group .............................................. 2

— Base of cell r 4 before apex of cell d; R 5 curved anteriorly, joining costa before wing apex (Fig. 3); body and femora at least partly reddish; staminea group; (Fig. 17); (Grand Cayman Island) .. ................................................................................................ Ef. caymanensis Scarbrough

2(1). Males ............................................................................................................................................ 3

— Females ...................................................................................................................................... 18

3(2). Epandrium 2.7-3 times as long as wide ....................................................................................... 4

— Epandrium less than 2.7 times as long as wide .......................................................................... 8

4(3). Costal margin of wing strongly dilated; palpi pale setose, with at most 3-5 black setae apically; epandrium with large, erect, dorsal process; gonocoxite membranous on apical 1/2-2/3 ........ 5

— Costal margin of wing not strongly dilated, margin straight or if dilated then only slightly; apical 1/3 or more of palpi black setose; epandrium without large erect dorsal process; gonocoxite uniformly thick and sclerotized ................................................................................................ 6

5(4). Epandrium 3.0 times longer than wide, dorsal process large, ear-shaped, with small notch anteriorly; gonocoxite uniformly wide apically, apex usually slightly notched (Fig. 8-10) ........ ................................................................................................................... Ef. bromleyi n. sp. — Epandrium 2.7 times longer than wide, dorsal process angular and without a small notch anteriorly; gonocoxite contrastingly narrow apically, abruptly wider below (Fig. 49-51) .... Ef. species A

6(4). Facial and palpal vestiture white, sometimes sparse black bristles present; scutellum with 2 stout marginal bristles; abdominal segments 5-7 mostly or entirely white tomentose, basal 1/2 of tergite 5 sometimes with small brown triangle medially; terminalia as in Fig. 30-32 .......... ......................................................................................................................... Ef. hinei n. sp.

— Facial and palpal vestiture mostly black; marginal scutellar bristles not as above; abdomen segments 6-7 mostly whitish tomentose, tergite 5 brown tomentose dorsally; terminalia not as in Fig. 30-32 ............................................................................................................................. 7

7(6). Costal margin of wing straight, not dilated; anterior scutal setae longer than scape; terminalia as in Fig. 21-23; small species 10.6-11.9 mm long ................................ Ef. cubensis (Bromley)

— Costal margin of wing slightly dilated; anterior scutal setae slightly shorter than scape; terminalia as in Fig. 24-26; 18.0-21.0 mm long ................................................................. Ef. gossei Farr

8(3). Costal margin of wing strongly dilated; epandrium with large erect dorsal process, membranous posteriorly; gonocoxite thin, membranous apically (Fig. 52-54) ......................... Ef. species B

— Costal margin usually straight, if dilated then only slightly; terminalia not as above ............. 9

9(8). Face usually mostly black medially, if pale then at least 8 black bristles present .................. 10

— Face mostly pale, usually only 1-5 black bristles present medially .......................................... 14

10(9). Femora black, at most only narrow apex yellowish-brown; palpus with apical 1/3 or more black setose; scutellum with mostly black setae and marginal bristles ......................................... 11

— Femora with apex, sometimes base and venter narrowly yellowish-brown; palpus whitish setose, 1-4 black setae apically; scutellum with white setae and whitish marginal bristles ............ 13

11(10). Anterior scutal setae as long or slightly longer than scape and pedicel combined; apical margin of epandrium with short, narrow process anteriorly, broadly triangular posteriorly; gonocoxite with acuminate apex, setae dense and long; phallus slender in lateral view, aedeagus with median prong slightly longer than ventral tubes (Fig. 5-7) ...................... Ef. bellardii n. sp.

— Anterior scutal setae shorter than scape and pedicel combined; terminalia with differing combination of characters ........................................................................................................................... 12

12(11). Wing with costal margin slightly dilated; apical 1/3 of femora sometimes brownish-yellow or red; epandrium wide apically with narrow apical process delineating apical cleft, apical margin triangular posteriorly; gonocoxite somewhat arched posteriorly, anterior margin abruptly narrowed apically; gonostylus slender, apex pointed, spinules short; terminalia otherwise as in Fig. 18-20 ................................................................................................ Ef. cazieri (Curran)

— Wing with costal margin straight, not dilated; femora entirely black; epandrium much narrower apically, with long slender process and deep anterior cleft; gonocoxite with posterior margin straighter, gradually narrowed apically along anterior margin; somewhat arched posteriorly, abruptly narrowed apically; gonostylus wider, apically spatulate, apex not strongly pointed, spinules dark, short and long; terminalia otherwise as in Fig. 43-45 .. Ef. vauriei (Curran)

13(10). Anterior scutal setae as long as or longer than scape; epandrium 2.1 times longer than wide, apical margin somewhat truncate with deep notch dorsoposteriorly; gonocoxite short and wide, apex about middle length of epandrium, apical margin rounded, about 1/2 as wide as base, setae short and sparse; phallus wide laterally, claw-like with opposing ventral process (Fig. 14-16) ................................................................................................................ Ef. . caudex (Walker)

— Anterior scutal setae about 2/3 as long as scape; epandrium 2.5 times longer than wide, somewhat pointed apically, without deep notch dorsoposteriorly; gonocoxite longer, with narrow pointed apex at apical 1/3 of epandrium, setae much denser and longer; phallus more slender laterally,