790 



THE DIPTERA 



which Theobald has modified and brought into accord with one 

 based upon scales as generic characters, and this classification is 

 followed below. 



Theobald's Classifica 

 TiON.- — The Culicidse may 

 be divided into subfamilies, 

 according to the characters 

 of the scales on the head, 

 body, legs, and wings. 

 A. Scutellum simple, 

 never trilobed; pro- 

 boscis straight, 

 palpi long in male 

 and female — Ano- 



FiG. 397.- — Head and Scutellum of 

 Megarhinus, to show the Scales. 



On the right a profile view of the scales. 



(After Theobald, ' CulicidEe of the World.') 



B. Scutellum trilobed: — 

 L Proboscis strongly 

 recurved ; first 

 submarginal cell 

 very small — Me- 

 garhinincB. 

 11. Proboscis straight; 

 post-scut ellum 

 nude : — 



1. Wings with six longitudinal scaled veins: — 



(1) Antennae with second joint normal in length:- — 



(a) First submarginal cell as long as or longer 

 than the second posterior cell. 



Palpi in the female shorter than the 



proboscis; long in male — Culicince. 

 Palpi short in both sexes — Mdince. 

 {h) First submarginal cell very small; smaller 

 than second posterior — UranotcBnincB. 



(2) Antennae with second joint very long — Deino- 



ceratince. 



2. Wings with seven longitudinal scaled veins — Hepta- 



phlehomyincE. 



III. Proboscis straight ; post-scutellum with scales or chaetse:- — 



1. Palpi long in male, short in female — Trichoproso- 



ponincB. 



2. Palpi short in both sexes. — Dendromyince. 



IV. Proboscis elbowed — LimatincB. 



Of these, only the Anophelinae and the Culicinae, and possibly 

 the iFdinae, contain species of importance in tropical medicine, 

 and concerning these subfamilies a few details must be given. 



