PHIL^MA TOM YIA 



833 



Ph YL^M atom YIN M . 



Philaematomyia Austen, 1909. 



Stomoxydinae resembling Musca domestica Linnaeus, being grey 

 flies with remarkable proboscis. Front in male narrow, its width 

 in centre being from one-eleventh to one-fifteenth of total width of 

 head; width of the front in the female, one-third of total width 

 of head. Proximal portion of proboscis shows a swollen chitinous 

 bulb, distal portion soft and fleshy, and folded back under distal 

 end of bulb when not in use, but when extended there is a tubular 

 extension furnished with a circle of chitinous teeth. Distribution: 

 India, Ceylon (very common), Cyprus, Senegal, and the Congo. 



Type SpeGles —Philcematomyia insignis Austen, 1909. 



Philaematomyia insignis Austen, 1909. 



Smoke- grey or yellowish-grey in colour, with dorsum of thorax 

 with four dark longitudinal stripes. The eggs are laid in batches of 

 fifty to sixty in cracks in dry cow's-dung. Egg is 2 to 2 -2 millimetres 

 in length by 0-4 millimetre in breadth. Larvae hatch in eight to 

 nine hours, and when mature measure about 1-25 centimetres. 

 They are bright lemon yellow in colour. They burrow under the 

 ground on the evening of the second day, and pupate. The puparium 

 resembles that of Musca, 0-5 centimetre long by o-i8 centimetre 

 broad. It is of a light mahogany colour, and has eleven segments. 

 The life-history may be summarized : Egg-laying, five to ten minutes ; 

 egg, eight to ten hours; larvae, two days; pupa, three and a half to 

 four and a half days; total, six to seven days. The fly is ready to 

 feed eight hours after hatching. Feeds usually on cattle; only occa- 

 sionally bites man. They pass out a clear watery fluid from the 

 anus while feeding (common in a blood-sucking fly). 



Enemies.- — Hymenoptera, spiders, tachinids. 



Other Species. — Ph. lineata Brunetti, 1910 {synonym, Pristirrhyn- 

 chomyia lineata Brunetti, 1910), andP/^. gurnet Patton and Cragg, 

 1912, both in India. 



SxOMOXYDINiE. 



StomoxysGeoffry, 1764. 



Arista of three segments, feathered dorsally only; proboscis long, 

 tapering, chitinized in all its extent, non- retractile; palpi slender, 

 very short, less than half the length of the proboscis. Fourth 

 longitudinal vein curved so as to merely narrow the first posterior 

 cell distally; third longitudinal vein bristly at its proximal end. 

 Front narrower in the male than in the female. 



Type Species. — -Stomoxys calcitrans Linnaeus, 1758. 



The genus Stomoxys is cosmopolitan in its distribution. The 

 principal species are — ■ 



European Species.— 5. calcitrans L., 1758. 



Asiatic Species.— Twelve species known and two synonyms: S. brunnipes 

 Gri'mberg, 5. calcitrans L., 5. plurinotata Bigot, S. dacnusa Speiser, S. indica 



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