Bentrovata, RICHARDS, 1973

Papp, László, 2021, New Species Of Apterobiroina L. Papp And Bentrovata Richards (Diptera, Sphaeroceridae) From Australia, Acta Zoologica Academiae Scientiarum Hungaricae 67 (2), pp. 101-117 : 116

KEY TO THE KNOWN SPECIES OF BENTROVATA RICHARDS, 1973

1. Frons without longitudinal stripes. Large, blunt, black thorns/pegs of ventro-medial process of synsternite unarranged ( Figs 21–22 ). Pseudocerci large ( Fig. 23 ). Female spermathecae long ovoid ( Fig. 28 ), its neck without warts. Thorax contrastingly yellow. B. flavithorax sp. n.

– Frons with 5 longitudinal stripes. Large, blunt, black thorns/pegs of ventro-medial process of synsternite in 1 row ( Figs 31–32 ). Pseudocerci small ( Fig. 47 ) or indistinct ( Fig. 33 ). Female spermathecae pear-shaped ( Figs 39–40 , 53 ) 2

2. Body smaller, 1.55 mm. Male pseudocerci indistinct ( Fig. 33 ). The black peg of surstylus comparatively short ( Figs 34–35 ). Ventro-medial process of synsternite with 16 (8+8) pegs ( Figs 31–32 ). Female unknown B. minor sp. n.

– Body larger (1.60 mm or more). Male pseudocerci small ( Fig. 47 ). The blunt peg of surstylus extremely long ( Figs 49–50 ). Ventro-medial process of synsternite with long, blunt, black pegs in 1 row, with 20 (10+10) pegs ( Figs 44–45 ) 3

3. Thorax dark brown. Legs predominantly dark brown. Neck of spermathecae with numerous warts ( Figs 39–40 ). Male unknown B. nigrithorax L. Papp et Szappanos , sp. n.

– Thorax contrastingly yellow. Legs predominantly yellow. Neck of spermathecae without warts or they are indistinct ( Fig. 53 ) B. regalis Richards *

Figures

Figs 21–29. Bentrovata flavithorax sp. n., male and female paratypes, postabdomen and genitalia. 21–27: male: 21 = sternite 5 and ventral part of synsternite, ventral view; 22 = ventromedial part of synsternite, ventral view; 23 = pseudocerci and subepandrial sclerite, caudal view; 24 = synsternite, anterior view; 25 = hypandrium, ventral view; 26 = surstylus, broadest (sublateral-subventral) view; 27 = postgonite, phallus and phallapodeme, lateral view. 28–29: female: 28 = spermathecae; 29 = cerci, dorsal view. Scale: 0.4 mm for Fig. 24; 0.2 mm for Fig. 21; 0.1 mm for Figs 22–23, 25–29

Figs 30–37. Bentrovata minor sp. n., holotype male, terminalia and genitalia. 30 = dorsal part of synsternite, anterior view; 31 = sternite 5 and ventral part of synsternite, ventral view; 32 = ventro-medial part of synsternite, ventral view; 33 = ventral part of epandrium and subepandrial sclerite, caudal view; 34 = surstylus, lateral view; 35 = same, ventral view; 36= hypandrium, ventral view; 37 = left postgonite, phallus and phallapodeme, lateral view. Scale: 0.4 mm for Fig. 30; 0.2 mm for Figs 31, 33, 36; 0.1 mm for Figs 32, 34–35, 37

Figs 43–53. Bentrovata regalis Richards, 1973, male and female postabdomen and genitalia. 43–49: male: 43 = basal sternites, ventral view; 44 = sternite 5 and ventro-medial part of synsternite, ventral view; 45 = ventro-medial part of synsternite, ventral view, higher magnification; 46 = synsternite, anterior view; 47 = pseudocerci, caudal view; 48 = genital complex, lateral view; 49–50 = surstylus, in two, slightly different broadest views. 51–53: female: 51 = postabdomen, lateral view; 52 = same, ventral view; 53 = spermathecae. Scale: 0.4 mm for Fig. 43; 0.2 mm for Figs 44, 46; 0.1 mm for Figs 45, 47–53

Figs 38–42. Bentrovata nigrithorax L. Papp et Szappanos, sp. n., paratype female. 38 = habi- tus, lateral view (del. A. Szappanos); 39 = paired spermathecae; 40 = single spermatheca; 41 = cerci and hypoproct, dorsal view; 42 = same, ventral view. Scale: 0.1 mm for Figs 39–42