478 GNATS OR MOSQUITOES — CHAPTER XIV 



coppery and iridescent scales ; abdomen black, with coppery and metallic 

 purple lustre. Legs deep metallic purple-blue, and the front pair -with a 

 small paddle, involving all the tibiae and half the first tarsal, which latter 

 is white beneath ; the middle legs bear a much larger paddle, although 

 the upper third of the tibia is unfringed, and has the first three tarsals 

 white with long white lateral scales ; hind legs with apex only of tibiae 

 fringed, first three tarsi silvery- white beneath. Length. — 7 mm. 



Habitat. — Amazons (Bates), 1861 (F. V. T.) ; Guiana (Macq.) ; 

 Brazil (Wied). 



Genus XVIII. ^DOMYIA, Theobald 



(Monog. II, p. 218), 



The character distinguishiog these gnats from the rest of the 

 sub family is the form of the wing scales, which are large and 

 bracket-shaped, almost as in PanopUtes. The head is clothed 

 with narrow upright scales, which are rather fan-shaped than 

 forked ; on the thorax the scales are broad and lanceolate, and 

 on the scutellum, pleuras and abdomen they are flat and spatulate; 

 clypeus with tufts of scales ; metanotum nude. The venation of 

 the wings is much of the usual type. The palpi are said to be 

 two- or three-jointed, but this character is of little value in 

 identification as the number cannot be determined without 

 mounting the appendages separately in balsam. May be dis- 

 tinguished from Stegomyia ( 5 ) by the scutellum being clothed 

 with broad flat, instead of narrow curved scales. 



1. ^DOMYIA SQUAMEPENNIS (Arribal.). 

 JEdes squamipennis, ArribAI. (" L. A." p. 62). 



Wings with the purplish black costa interrupted by three 

 clear white patches which extend across the wing and round its 

 apex. Tarsi and legs elaborately banded, the long joints each 

 with several yellow bands and with broad, irregularly basal and 

 articular bands. Thorax unadorned, dark brown, with its scales 

 yellowish in the middle, and white behind and at the sides. 

 Abdominal segments brown, with two creamy patches on the 

 hinder and two white ones on the fore borders, the apical seg- 

 ments ochreous. Proboscis black, with two narrow white bands. 

 Apices of mid and hind femora with a tuft of long dark scales. 



Head whitish, with a tuft of broad creamy scales between the eyes 

 and dark scales at the sides ; clypeus black, with two streaks of white 



