LYPEROSIA 



837 



the upper arms of which is a small perforated sclerite. The pos- 

 terior stigmata are two in number. The mouth-hook is used for 

 locomotion. 



Pupation is brought about in tv/o hours by the larva shortening 

 itself and becoming barrel- shaped, the colour turning to red. The 

 pupa measures 5 to 5-5 millimetres in length, and possesses eleven 

 visible segments. In a few days the pupal skin is split along lateral 

 and median lines anteriorly, and at the fourth segment transversely, 

 and the imago escapes. 



Lyperosii Rondani, 1862. 

 Synonym. — Glossinella Grunberg, 1906. 



Stomoxydinae resembling Stomoxys, but with palpi as long as the 

 long slender proboscis, around which, as they are broad, they form 

 almost a sheath, with no bristles on the third longitudinal vein. 

 Distribution: Europe, Asia, Africa, North America, and Australia. 



Type.—Lyperosia irritans Linnaeus, 1761. 



They are dirty brown or dirty yellowish-grey, very small blood- 

 sucking flies, with inconspicuous markings, and usually only attack 

 animals, and do not come into houses. 



European Species. — L. irritans L., 1758; L. titillans Bezzi, 191 1. 



Asiatic Species. — L. minuta 'Bezzi, 1892; L. schillingsi Grunberg, 1906; 

 L. exigua de Meijere, 1903; L. flavohevta Brunetti, 1910; L. rufipalpis Becker, 

 1910 [-prohdibXy — Sty geromyia maculosa Austen, 1907). 



African Species. — L. minuta Bezzi, 1892; L. longipalpis Roubaud, 1906 

 (=L. pallidipes Roubaud, 1907); L. schillingsi Grunberg, 1906 ( = 5^. Macu- 

 losa ?): L. potans Bezzi, 1908; L. punctigera Austen, 1909; L. exigua (Meijere, 

 1903); L. thirouxi Roubaud, 1903. 



American Species.— L. irritans L., 1758; L. aids Snow, 1891 (synonym: 

 Hamatobia alcis Snow, 1891). 



Australian Species. — L. exigua Meijere, 1903. 



(For details see Summer's paper, vide infra.) 



Stygeromyia Austen, 1907. 



Stomoxydinae with general appearance and body like Stomoxys, 

 proboscis and palpi like Hamatobia, arista feathered dorsally only. 

 Head flattened from front to rear; proboscis short, stout, shiny, 

 chitinous, not tapering; palpi as long as the proboscis; clavate at 

 tips, curving upwards. Cell opening as in Stomoxys. Apical por- 

 tion of fourth vein straight beyond bend — i.e., not bent inwards 

 as in Stomoxys and Hcematohia. Distribution: Africa and Southern 

 Arabia. 



Type. — ■Stygeromyia maculosa Austen, 1907. 



Stygeromyia sanguinaria Austen, 1909, is stated by Yale Massey 

 to be a blood-sucker in the Congo Free State, while 5. maculosa 

 Austen, 1907, found in Little Aden, is inferred to be also a blood- 

 sucker, and 5. woosnami Austen, 1912, in East Africa. 



Glossina Wiedemann, 1830. 



Synonym, — Nemorhina, Robineau-Desvoidy, 1830. 



Narrow bodied, elongate, greyish-brown or yellowish-brown, dull- 



