KEPOKT OX ECONOMIC' ENTOMOEOCiY 
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legs hlaek ; the metatarsi of the hind legs with a liroad median pale yellow liand : 
wings bright, testaceous at the base ; halteres ochraceous, the metatarsus, and especially 
the first two tarsi, much swollen in the fore legs, the two last tarsi small, very hairy, less 
so on the mid and hind legs; nngues all dentate.” 
The htrmi (fig. .h) resembles in shape and general appearance the Niuutti larva, hnt i-ai'-a 
can he distinguished from it by its relatively larger size and darker colour. dark 
pigmented patch is usually present on either side of the first thoracic segment. 
Length about b mm. 
The papii. (fig. 7) is enclosed in a pocket-shaped cocoon, about 4 mm. in length. Pupa 
similar to that of the Xiinitti pupa. The respiratory appendages consist each of a double 
comb of tubes which do not project much above the edge of the cocoon. 
Llff-hhtonj and hahifs. — The life-history of the Kilteb appears to be identical with that Life-history 
of the Niniitti. It has nevertheless been recorded from only one locality in the Sudan — and haiuts 
viz., the neighbourhood of Abu Hamed, where its larvse and pupas exist in the river in 
company with those of the Nimitti. 
The adult females are exceedingly vicious blood-suckers, attacking chiefly the ankles 
and legs. Like the Ximitti, they are most active during the hours of sunset and sunrise. 
The Kilteb do not swarm around the face, trying to crawl into the eyes and ears, 
but each fly, in a business-like way, settles on the spot it has selected, takes a short 
preliminary tour, patting the surface with its fore legs, and then, plunging its proboscis 
into the skin, commences to feed. In from two to three minutes it is fully gorged, 
whereupon it flies heavily away, while a tiny trickle of blood flows from the puncture it 
has made. 
These bites are exceedingly irritating, and in some cases produce considerable swelling. 
The types from which N. damnosnm was originally described came from Uganda, where 
it is known as Mhwa or the Jinja fly. The following is an extract from a letter received 
from Mr. Charles White, of Bukalamu, referring to this fly: — “We have in these parts, 
near the Ripon Falls, a terrilile pest, far worse than mosquitoes — a small black biting 
fly, which sucks the blood and leaves a painful irritation and sore. Natives have to bind 
their legs with bark-cloth puttees, and some of their bodies and legs are covered with 
sores which they tell me are caused by this fly.These flies are in millions 
here, and consequently cattle will not thrive.” 
Kilteb do not occur at Abu Hamed in very great numbers except during the winter, 
when the river is low. 
11. Seriiots Seroots 
T.vh.vn i d.e 
Several species of Tahanklce, hitherto unrecorded from the Sudan, have been taken Xew Sudan 
during the past two years. These include a Chrysopn — C. bnicei, Austen — and a Ifeematopota Tahantdm 
-II. dpnshatnii, .\usten. 
Among a collection of blood-sucking flies made by Capt. C. M-ackenzie in the Lado 
Enclave is a member of the genus irippncenfnim — If. versicolor, Austen—and three 
Ifieinatopota — H. denshamii, If. tennis, .\usten, and a thii'd species that has yet to be 
determined. 
A single specimen of Ta.ha.niis unitieniafus, a species recently described by Miss Ricardo^ 
was taken at Wau, Eahr-El-Ghazal, in 1905, and Pangonia inagretti, Bozzi, is recorded from 
El Obeid, Kordofan. by El Bimbashi Williams. 
The following seroots have been taken in Khartoum: Ta.baniis socins. Walk., 
T. ditrenintns, Macq., and a tliird species new to the Sudan, but which, unfortunately. 
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