7. MACHIMUS 677 



for some black bristly antero-dorsal hairs and the orange felt-like pubescence 

 on the apical two-thirds of the inner side ; front tarsi with minute black bristly 

 hairs and with some orange felt-lilce pubescence on the soles ; pubescence 

 on the middle femora long and sparse beneath but minute pale and depressed 

 elsewhere except for some black bristly hairs about the tip, on the middle 

 tibiae much sparser than on the front pair and with the. minute bristles 

 mainly black on the dorsal part but forming a dense short sloping pubescence 

 on the underside ; pubescence behind and beneath the hind femora slight 

 and pale, but minute depressed pale hairs occur on the other parts, and the 

 hind tibife bear mixed minute depressed bristles and have orange felt-like 

 pubescence all down the inner side, and this felt-like pubescence extends 

 to the sole of the basal joint of the tarsi with a slight trace on the second 

 joint. Bristles black (with rare exceptions) ; front femora with three or 

 four postero-dorsal on the apical half ; front tibiae with one rather strong 

 dorsal close to the base and one small antero-dorsal close to it, about seven 

 (3-7) often unequal slightly postero-dorsal, about three (2-4) long postero- 

 ventral of which the uppermost one (just before the middle) is the longest, 

 and the usual apical circlet of about six bristles ; front tarsi with the usual 

 circlet of six bristles at the tip of each of the four basal joints and with 

 the usual long posterior bristle near the base of the basal joint, besides the 

 plantar bristles • middle femora with one strong anterior just after the 

 middle and sometimes with another one near the base, three or four smaller 

 antero-ventral in a sort of row near the middle, and the usual subapical 

 bristles ; middle tibiae with two small antero-dorsal (one near and one after 

 the middle), two thinner postero-dorsal near the antero-dorsal, about three 

 longer and more hair-like postero-ventral, and two long antero-ventral of 

 which one is just after the middle and the other at about three-quarters the 

 length ; middle tarsi with bristles similar to those on the front pair but 

 wdth a strong anterior as well as posterior one near the base : hind trochanters 

 with about two (2-4) posterior bristles ; hind femora with two postero-dorsal 

 near the tip, five or six anterior or antero-dorsal almost equally separated 

 (excluding the rather isolated subapical one), about seven (5-7) slightly antero- 

 ventral extending over nearly the whole length, one rather strong postero- 

 ventral (dark orange or black) just after the middle with a smaller incon- 

 spicuous one a little before it and two inconspicuous yellow ones near the 

 base ; hind tibiae with one quite dorsal near the base, three slightly 

 antero-dorsal near the middle (the middle one small or absent), one postero- 

 dorsal at the middle, two antero-ventral at about three-quarters the length, 

 and the usual apical circlet ; hind tarsi with the usual apical circlets to 

 the four basal joints, a strong anterior bristle near the base of the basal 

 joint, and the plantar bristles. Pulvilli long, brownish orange ; claws long 

 and rather thin, especially curved near the tip. 



Wings hyaline with blackish brown veins and with an extensive brownish 

 grey "gloom" at the tip and hindmargin ; this "gloom" fills the second sub- 

 marginal cell and forms broad stripes in the first submarginal and in the 

 marginal cell where it extends back about as far as opposite the base of the 

 discal cell, and it also occupies the wing-tip, the third posterior cell except close 

 to the veins, and the whole of the hindmargin, while it forms large kernels in 

 the closed fourth posterior and anal cells and a narrow stripe in the discal 

 cell. Squamai brownish yellow ; alar pair with rather long abundant 

 outspread whitish fringes, but the thoracal pair practically absent, Halteres 

 brownish, with the top of the knob rather orange. 



9 . Very similar to the male except for the ovipositor. 



Thorax with the metapleural and hypopleural fans more distinct. 



Abdomen rather broader and more pointed, w^hen seen fi'om behind more 

 greyish black \\dth large black dorsal spots on the second to sixth segments ; 

 pubescence very slight on the sides of the third segment and the yellow 

 bristles towards the sides of the praehindmarginal fringes not extending 

 beyond the fifth segment. Belly with soft long white pubescence on the four 

 basal segments, but with more rigid erect black bristly hairs on the next 

 three and to a small extent on the hindmargin of the fourth segment. 

 Ovipositor elongate triangular (when seen sideways) and apparently formed 



