5. SYMPHOROMYIA 299 



2. S. immaculata Fabricius. Antennse with the basal joint short and 

 inconspicuously bristly. Frons of the male bare. Wings inconspicuously 

 smoky. Small species. 



An inconspicuous small greyish black fly. 



S. Epistoma small, light grey, and bare, but the comparatively narrow side- 

 cheeks bear a few rather long inconspicuous pale hairs, and similar but longer 

 and much more conspicuous hairs occur on the moderate-sized jowls; 

 back of the head moderately and almost equally inflated and bearmg 

 much shorter pale hairs and some rather bristly black hairs out on the actual 

 back of the head, while on the upper part there are some longer fairly con- 

 spicuous postocular black bristly hairs which bend slightly for\yards ; vertex 

 rather elongate, narrow and greyish, and (as the eyes do not quite touch) the 

 numerous black bristly hairs on the vertex contrast with the bare frons and 

 narrow connecting space. Proboscis rather large but shorter than the palpi, 

 dull brownish black : palpi long, porrected, dull black or blackish brown, 

 slightly drooping at the tip, and sparsely bristly, with the bristles mainly pale 

 but with a few^black ones at the tip. Eyes large and almost cu-cular, quite 

 bare, and not quite touching on the frons ; facets all equal in size. _ Antemutt 

 (fig. 196) dark brown; two basal joints short and almost equal in length, 

 bearing very short dorsal bristles ; third joint kidney-shaped with the lower 

 part curving back almost to the base of the second joint, and bearing short 

 downy pubescence ; arista more than twice as long as the antenna, thin but 

 still tapering, bare, and inserted at about one-third from the base of the 

 third antennal joint. 



Thorax light brownish grey with faint indications of two broad darker 

 stripes, or sometimes even with a faint broad middle stripe in addition which 

 may be split down the middle, plentifully besprinkled with moderately long 

 black bristly hairs of which each one arises from a punctate dot on the disc, 

 and these hairs become longer towards the sides ; pleurae blackish grey, bare 

 except for a few inconspicuous pale hairs on the upper margin of the meso- 

 pleurte and for the more obvious tuft of pale pubescence on the metapleuraj ; 

 none of the bristly hairs on any part of the thorax ever approximate to true 

 bristles. Scutellum rather more blackish and bearing rather longer pu- 

 bescence on at least the margin and tip. 



Abdomen ashy grey with six nearly equally long distinct segments and 

 a very short seventh, compressed from the third to the sixth segment 

 (both inclusive). Pubescence greyish white, fairly conspicuous and long 

 (especially at the sides) but not dense, mixed with shorter more depressed 

 and more bristly black hairs, and each hair arising from a somewhat con- 

 spicuous punctate dot. Belly similar in colour and with pale but slightly 

 shorter pubescence ; the ventral .part of the abdomen well separated from the 

 dorsal part and is arched from side to side. Genitalia obvious ; lateral lamellse 

 moderately small with a pair of small triangular intermediate lamella;; and 

 a short bristle-like middle organ. 



Legs obscure brownish black with the tibiae rather luteous especially about 

 their base. Pubescence very slight ; coxae with moderately abundant long 

 pale pubescence ; femora with a slight pale fringe which is postero-ventral 

 on the anterior pairs but 

 antero-ventral on the hind 

 pair ; posterior tibiae with 

 two rows of minute bristles ; 

 the two spurs on the middle 

 tibiae and the one on the 

 hind tibiae obvious ; no 

 " touch-hairs " visible be- 

 neath the front tarsi. Pul- 

 villi and claws small. 



Wings (fig. 198) slightly FiG.VJS.Symphorumyia immm-nluta S- x 17. 



smoky with the marginal • i r i, 



cell darker ; venation very constant, so that the two upper vemlets trom tJie 



