796 



THE DIPTERA 



B. Last hind tarsal white 



I. Legs spotted with white: — 



{a) Palpi with three white bands — willmori James. 

 (&) Palpi with four white bands — mactdatus Theobald. 

 11. Legs not spotted; four palpal bands — karwari James. 



C. Last two hind tarsals white. Legs with mottled femora, tibiae, and tarsi; 



three white palpal bands : — 



{a) Two apical palpal bands close together — theobaldi Giles. 



(b) Two apical palpal bands far apart — pretoriensis Theobald. 



D. Last two and a half to two and three-quarters tarsals white — tibani Patton. 



E. Last three hind tarsals white: — 



I. Palpi with three white bands: — 



(a) Palpi spotted; legs spotted — ■maculipalpis Giles. 



(6) Palpi spotted; hind legs not banded — indiensis Theobald. 



(c) Palpi not spotted; legs spotted — jamesii Theobald. 



(d) Palpi and legs not spotted. 



(1) Wings with four white costal spots — fuliginosus Giles. 



(2) Wings with five white costal spots — nivipes Theobald. 

 II. Palpi with four white bands — philippinensis Ludlow. 



F. Legs uniformly brown — brunnipes Theobald. 



Cellia Theobald, 1902. 



This genus, which is widely distributed throughout the tropics, has two 

 malarial carriers, Cellia argyrotavsis and C. albimana, the latter being also 

 known as a filarial carrier. 



Cellia. 



A. Legs with last three hind tarsals white: — 



I. Dark species — argyrotarsis Robineau-Desyoidy. 

 II. Dark species, but with whitish-grey apex to abdomen — braziliensis 

 Ghagas. 



III. Yellowish species — pulchevrima Theobald. 



B. Legs with last hind tarsals white: — 



I. Femora and tibiae mottled; apical foot-bands — pharoensis Theobald. 

 II. Femora and tibiae not mottled — bigoii Theobald. 



C. Legs with last hind tarsal white, except base; second and third white — 



albimana Wiedemann. 



D. Legs with last hind tarsal dark. 



I. Dark species; three white long lateral thoracic lines — squamosa 

 Theobald. 

 II. Pale species: — 



{a) Thorax with two eye-like spots; pleurae pale with large black 



s^ots—kochi Donitz. 

 {b) Similar, but with wings more spotted — punctulata Donitz. 



Subfamily Culicin^e Theobald, 1901. 



Definition. — Culicidae with straight proboscis, long palpi in the male, short 

 in the female. Post-scutellum nude ; wings with a long first submarginal cell , 

 and without a third anal vein. Larvae with respiratory siphons. 



Remarks.— There are upwards of sixty- three known genera, but of these only 

 Stegomyia, Culex, and perhaps Mansonia, are of importance to medical men 

 at present. 



Stegomyia Theobald, 1901. 



Definition. — Culicinae with the head and scutellum clothed with flat scales. 



Remarks. — The important species is Stegomyia fasciata, the tiger mosquito, 

 which spreads yellow fever. It is peculiar in that it bites chiefly in the after- 

 noon. It is found all over the world, which is due to the fact that it can live on 

 board ship easily. 



