oc a alleen eae in 
" 
; f 
Mr. Edwards on a Revision of the Genus Harpagomyia. 497 
spines, beyond which on the inner aspect of the side-piece are two 
additional spines; clasper simple, curved, with a short, thick, 
terminal spine. Tenth sternites simple, pointed, bare, with 
basal enlargement: Parameres small and inconspicuous. Mesosome 
well chitinised, divided or entire, according to the species. 
Female abdomen blunt-ended, eighth tergite somewhat bristly. 
Hind tibiae shorter than the others. Claws all simple, in the male 
the front pair slightly unequal. No pulvilli. Wings with the fork- 
cells longer than their stems, the upper somewhat narrowed towards 
the apex. Tip of sixth vein nearly level with the base of the fork of 
the fifth, and only slightly beyond the base of the second. Wing- 
scales pointed. Microtrichia present on membrane of wings. 
Larva: Antennae short, without hair-tuft. Head tufts normal 
in number and position. Metathorax without strong spines. Comb 
of 8th segment an irregular patch of scales. Air-tube with numerous 
hair-tufts, on both dorsal and ventral surfaces, and with round- 
ended, flat, fringed scales similar to those of the 8th segment, 
arranged in two irregular rows on each side, apparently representing 
the pecten. No ventral brush on last segment. 
The adults are very small dark-coloured mosquitoes 
with metallic markings; they live in association with ants 
of the genus Cremastogaster, which they solicit for food, 
obtaining it by inserting the proboscis between the ants’ 
jaws. The larvae live in old water-filled nests of the ants 
(Jacobson), or in water collected at the bases of wild 
pineapple leaves (James, Stanton). The remarkable habits 
of the adults have been described in some detail by Jacob- 
~son, Banks,* James and Farquharson. 
In spite of the absence of bristles on the postnotum, 
there can be no doubt that the genus should find a place 
among the Sabethini, on account of the larval characters, 
and the head bristles, round-ended scales and short hind 
tibiae of the adults. 
Up to the present the following specific names have 
been proposed :— 
Malaya genurostris Leicester (1908). Kuala, Lumpur. 
Harpagomyia splendens de Meijere (1909). Java. 
Grahamia trichorostris Theobald (1909). Ashanti. 
Harpagomyia coeruleovittata Ludlow (1911). Philip- 
pine Is. . 
Harpagomyia taenarostris Theobald (1911). Uganda. 
* See Theobald 1909 and Muir 1919. I have been unable to 
trace Banks’ work. 
