208 MEDICAL ENTOMOLOGY 



THE CULICINA 



This section contains the well-known culicine mosquitoes, in which 

 the scutellum is trilobed. The palps show extreme variations in length, 

 some being as long or longer than the proboscis, others much shorter ; 

 they are, however, usually long in the male and short in the female, or 

 moderately short in both sexes. Dyar and Knab have come to the con- 

 clusion that the length of the palps is a character of minor importance, 

 and that too much stress should not be laid on it in splitting up the 

 group. The character of the scale ornamentation is also very variable. 



The Culicina (sensu lato) comprises the subfamilies Culicinae, Hep- 

 taphlebomyinae, Dinoceratinae, Aedinae, and Uranotaeninae of Theobald. 

 Many of these groups contain a large number of genera, which cannot 

 be described in detail here for want of space. The following table of the 

 important genera is taken from Theobald's monograph, to which the 

 reader is referred for further details. 



Theobald's table of genera of the subfamily Culicinae (sensu restricto). 

 I. Eyes and scutellum normal. 



A. Legs ornamented with dense outstanding scales. 



tt Head clothed with spindle-shaped and broad curved 



scales. 



p Hind legs only densely scaled .... Janthinosoma 



(Aedes group) . 

 P& All the legs more or less densely scaled. 



Wing scales rather thin .... Psorophora 



(Aedes group). 

 Wing scales large inflated parti-coloured. Body 



and head with very long twisted scales . Mucidus 



(Aedes group). 

 D. Legs normal, no irregular scales. 



& Head clothed with flat and upright forked scales only. 

 ft Scutellum with flat scales. 



Small flat scales on the mesonotum before 



scutellum Quasistegomyia 



(Aedes group). 

 Flat scales as lateral patches also . . . Kingia 



(Aedes group) . 

 No flat scales on mesonotum. 



Male papli long, thin, nude and acuminate. 



Large Desvoidya 



(Aedes group). 



Flat scales over the wing roots ; proboscis 

 very short and thick, bent twice ; mid ungues 



of male equal Brevirhynchus 



(Aedes group). 



Male palpi thin, acuminate or clavate, hairy. 

 Small . . . . . , . Stegomyia 



(Aedes group). 



