866 DIPTERA OP AUSTRALIA, 



367. Gynoplistia cyanea, Westwood. (PI. xxiii., fig. 31). 



Gynoplistia cyanea, Westw., Lond, and Edin. Phil. Mag. VI. p. 

 280, 1835 ; Macquart, S. a B. II. Suppl. p. 649; Westw., Trans. 

 Ent. Soc. III. p. 370, 1881. 



Q. — Length of antennae 0*125 inch ... 3-16 millimetres. 



Expanse of wings 0-430 x 0-120 ... 10-92x3-04 



Size of body 0-500x0-075 .. 12-70x1-89 



Head black, with a reflection which is almost imperceptibly 

 bluish. Rostrum, palpi and antennae brown; the latter 2- + 17- 

 jointed ; flagellar joints 1-8 with a short obtuse branch, the 

 branches gradually diminishing in length, that on the eighth 

 flagellar joint very short ; the next joint with a very small projec- 

 tion on inner side ; remaining eight joints elliptical, gradually 

 becoming narrower. Collare dark brown. Thorax black, some- 

 what shining ; pleurae and coxse pruinose ; scutellum and meta- 

 notum dark brown, nearly black. Halteres brown, stem lighter. 

 Abdomen deep violaceous, the first two or three segments with a 

 brownish tinge, shining ; ovipositor brown. Trochanters, femora 

 and tibiae obscure testaceous-brown, fuscous at the apex ; tarsi 

 fuscous. Wings with a brownish tint, and all the veins clouded ; 

 tinted with testaceous-brown between first longitudinal vein and 

 costa (except at extreme base) ; and having two fuscous sub-costal 

 spots ; a small one at base of second longitudinal vein, and a 

 larger one from inner end of stigma to inner end of discal cell ; 

 veins and stigma fuscous. Auxiliary vein reaching costa 

 slightly before inner end of second sub-marginal cell ; sub-costal 

 cross-vein situated immediately before tip ; marginal cross-vein 

 .scarcely discernible, situated a little before tip of first longitudinal 

 vein ; petiole of first sub-marginal cell extremely short ; posterior 

 branch of second longitudinal vein arcuated upwards at the tip ; 

 second posterior cell f the length of third posterior cell ; small 

 cross-vein less than half the length of basal portion of third 

 longitudinal vein ; great cross- vein situated immediately before 

 middle of discal cell. 



