702 ASILID^ 



shaped, more so than in most of the allied species ; hind tibiae curved ; front 

 00X36 shimmering whitish grey and bearing anteriorly abundant whitish 

 yellow pubescence ; middle coxse similar, but with less pubescence, and the 

 hind coxse with but little pubescence. Pubescence varying in strength and 

 density, black and fairly abundant on the upper side of all the femora, but 

 longer, finer, and pale yellow or whitish grey behind and beneath the anterior 

 pairs, while usually all the pubescence on the hind femora is black except 

 sometimes some yellow pubescence beneath ; all the tibi« have fine short 

 usually rather conspicuous yellowish or whitish grey pubescence except on 

 the apical half of the hind pair (where it is black) and have a ciliation of long- 

 thin black hairs beneath the front and hind pairs and an orange or yellowish 

 ciliation beneath the middle pair ; pubescence on the tarsi short, almost 

 bristly, and nearly all black ; front tibiae on the inside ( = front) and the soles 

 of the basal joints of all the tarsi clothed with orange felt-like pubescence; 

 some bristles and long hairs of a bristly nature occur in addition to the above 

 pubescence, but the only bristles on the femora are one more or less indistinct 

 antero-dorsal on the middle pair after the middle and a trace of one or two 

 postero-dorsal near it, and one orange or black antero-ventral on the hind 

 pair at about three-quarters of the length with traces of some dorsal bristles 

 rather near it ; the front tibiae bear the usual few long postero-ventral hair- 

 like bristles, about five small black dorsal, and about four weaker but longer 

 postero-dorsal ; middle tibiae with about four (2-4) long antero-dorsal not far 

 from the middle, about eight weaker postero-dorsal along the whole length, 

 and three rather long almost hair-like anterior bristles (of which one or two 

 may be orange), and two long hair-like antero-ventral (one at a third and one 

 at three-quarters) with a small intermediate yellow one and two orange spurs 

 beneath the tip ; hind tibiae with about four moderately strong nearly 

 equidistant curved antero-dorsal but no other distinct bristles, though about 

 two antero-ventral hairs stand out rather distinct from the other pubescence ; 

 the circlets of bristles at the tip of all the tibiae are absent or indefinite 

 though three or four bristly hairs occur there, and the usual bristles on the 

 tarsi and the circlets at the ends of the joints are rather weak, but some of 

 the stronger bristles forming the underpart of the circlets are orange. 



Wings almost hyaline on the basal two-fifths, but after that with an 

 obvious blackish brown tinge in which are usually subhyaline kernels in the 

 posterior cells ; costal vein beset with short whitish or yellowish hairs from 

 the base to near the humeral cross-vein ; subcostal vein and the stems of the 

 principal veins yellowish brown ; anal cell closed just before the wingmargin. 

 Squamae (alar) small, obscurely yellowish to blackish orange with a pale 

 yellow to brownish orange margin on which is only a very slight fringe. 

 Halteres canary yellow to dark lurid reddish. 



$. Very much like the male. Eyes flattened and with much enlarged facets 

 on the front part as in the male. 



Abdomen with the tawny or yellow pubescence usually conspicuous 

 towards the sides of the hindmargins of the segments, and the last segment 

 with considerably extended black dorsal pubescence ; ovipositor small and 

 (unless exserted) triangular and bearing some long porrect black bristly 

 hairs on its underside. 



Legs with the long black hairs and bristles on the anterior (especially the 

 middle) tibiae more distinct, and the hind tibiae with about seven distinct 

 antero-dorsal and four small postero-dorsal bristles ; hind femora less clavate. 



Wings so much less hyaline about the base that they become more equally 

 tinged with blackish brown ; costa with no whitish or even pale hairs about 

 its base. 



Length about 11 mm. but varying from 10 mm. to 12 mm. 



This species seems to vary but little in British specimens except in 

 size and in the tawny or pale grey pubescence, but some rather distinct races 

 may exist in Europe in which the basal antennal joint is only three times 

 as long as the second, or the short pubescence on the thorax, scutellum, 

 and three basal abdominal segments may be whitish, etc. Loew also 



