TABANINm 



817 



Prophylaxis.— Kerosene spread on water appears to be the best 

 method of deahng with these pests. 



Classification.— The family is divided into two subfamiHes: 

 Tabaninae and Pangoninas. 



Fig. 410. — Pupa of Tabanus kingi Austen. (After King.) 



(From the Fourth Report of the Wellcome Tropical Research Laboratories, 



Khartoum.) 



Tabanin^. 

 Tabanidse without spurs on the hind tibiae. 



The important genera of the Tabaninae may be recognized by the 

 following table 



I. Thorax and abdomen with iridescent tomentum — -Lepido- 

 selaga. 



II. Thorax and abdomen without iridescent tomentum. 

 I. Eyes bare. 



(a) Third joint of the antenna without basal tooth: — ■ 



(1) Antennae extremity slender, and first joint 



elongate — Hippocentrum (Fig. 408, k, k'). 



(2) Antennae not remarkably slender and first 



joint not remarkably elongate^ — -Hcema- 

 topota (Fig. 408, /, f ). 



(b) Third joint of the antenna with well-developed 



basal tooth— Tab antis (Fig. 408, i, i'). 



Lepidoselaga Macquart, 1838. 

 Synonym,— Hadrus Perty. 



Lepidoselaga lepidota Wiedemann, 1828, the motiica fly of Brazil, 

 is a well-known biter. (Antennae: vide Fig. 408, h.) 



Haematopota Meigen, 1803. 

 Synonym. — Chrysozona Meigen, 1800. 



The number of species comprised in this genus is rapidly in- 

 creasing. About 130 have already been described, and Austen 

 informs us that many more still await description from Africa alone. 

 The characteristics of a species belonging to this genus are — The 

 elongate antennae, the peculiar wing-markings (Fig. 412), and the 

 peculiar arrangement of the wings when at rest, when the bases 

 meet together, while the rest of the wings diverge slightly and 

 slope backwards and outwards. The species of Hcewatopota are 



52 



