34 



DIPTEEA 



one Hodgesia Theobald may possibly come here. There are no definite characters by which rj 1 A edcomyinae 

 can be told from 9 Culicinae or 9 Joblotinae. There is similar squamose, nervation, and palpal variation 

 here as in the other sections. Most of the genera are tropical and subtropical. 



Characters. — Head clotbed with all varieties of scales (Aedes) ; or flat scales and upright forked 

 ones only (Uranotania, etc.); Thorax with flat, spindle shaped and narrow curved scales, also the scutellum ; 

 metanotum may be nude, or may have chaetae (Wyeomyia, etc.) or chaetae and scales [Limatus, Sabe- 

 tkes, etc.). Palpi short in the 9 often minute, from 2 to 5 segments, never more than half the length 

 of the proboscis; in the g* short, never more than half the length of the proboscis, often very small. 

 Antennae pilose and verticillate in the 9- plumose or verticillate in the g*. Proboscis usually normal, 

 sometimes very long (Phoniomyia), elbowed (Limatus) or much swollen (Mimomyia). Venation variable, 

 fork-cells normally long (Aedes ; Haemagogus, etc.), occasionally small (Uranotaenia). Ungues equal in 9 » 

 the fore and mid ungues in the rf simple and serrated. 



Larvae siphonate. The majority of species are sylvan in habits, none truly domestic as in Culicinae 

 and Anophelinae. 



TABLE OF GENEEA 



A, Antenna of (f plumose, of 9 verticillated and pilose. 



a. Head with narrow-curved, upright forked and plat lateral scales. 



Scutellum with narrow curved scales Genus Aedes, Meigen. 



aa Head with upright fan shaped scales. 



Scutellum with flat scales. Wing scales broad and short 



and asymmetrical apically Genus Aedeomyia, Theobald. 



aaa Head with flat scales all over. 

 [3 Fork-cells of normal length. 



Scutellum with flat scales Genus Ficalbia, Theobald. 



ji|3 Fork-cells small. 



First submarginal cell much smaller than second pos- 

 terior. Scutellum with flat scales Genus Uranotania, Arribalzaga. 



p[3[j First submarginal cell slightly smaller than second pos- 

 terior. 

 Scutellum with narrow curved scales Genus Mimomyia, Theobald. 



B. Antennae of q? and 9 ver y similar, both pilose and verticillate. 



y Antennae very long, much longer than proboscis, the second 



joint very long Genus Deinocerites, Theobald. 



vy Antennae of normal length. 



o Head and scutellum with flat metallic scales. 



e Metanotum nude Genus Haemagogus, Williston. 



es Metanotum with chaetae or squamae or both. 

 Metanotum with chaetae. 

 5 Legs simple. 



n Proboscis very long. 



Wing scales broadish, the lateral ones Taeni 



orhynchus- like. 

 Proboscis longer than whole body ; small species. Genus Phoniomyia, Theobald. 

 Wing scales dense and large; proboscis as long 

 as thorax and abdomen; frons drawn out into 

 a blunt spine. Large species Genus Runchomyia, Theobald. 



