536 MOSQUITOES OF NORTH AMERICA 



ThiB species has been reported also from Honduras (Walker), State of Minas 

 Geraes, Eio de Janeiro, and Sao Paulo, Brazil (Peryassu), Argentina (Arrib&l- 

 zaga). 



The adults from Brazil and southern Mexico differ slightly in the orna- 

 mentation of the thorax, and larvae from Mexico also differ slightly in the shape 

 of the pecten-teeth of the air-tube. It is probable that the southern specimens 

 represent a diilerent race, or races, perhaps species ; but our material is scanty 

 and not of the best, so we refrain from a positive decision. It should be noted 

 that there is a considerable interval, between southern Brazil and Honduras, in 

 which the species apparently does not occur. If it should prove that the South 

 American form is a distinct species, it will bear the name Psorophora tibialis 

 Eobineau-Desvoidy. 



The synonymy is obvious, except in the case of Psorophora boscU Eobineau- 

 Desvoidy. This is quoted on the authority of Theobald, but with considerable 

 misgiving. Eobineau-Desvoidy indicated a general yellow coloration for his 

 species and much smaller size than Psorophora cUiata. His specimen most 

 likely was a badly denuded specimen of some species of Aedes, Psorophora 

 centaurus is a manuscript name of Walker's, and although published as a 

 synonym, must be credited to Theobald who introduced it into the literature. 

 The larvae and pupae of this species were first figured by Howard (1900) . 



PSOROPHORA S^VA Dyar & Enab. 



Psorophora cilipes Coquillett (In part, not Pabriclus), U. S. Dept. Agr., Bur. Ent., 



Tech. Ser. 11, 14, 1906. 

 Psorophora sreva Dyar & Knab, Proc. Biol. See. Wash., xix, 133, 1906. 

 Psorophora smva Busck, Smiths. Misc. Colls., quart, iss., lil, 62, 1908. 

 Psorophora cilipes Theobald (not Fabricius), Men. Culic, v, 125, 1910. 

 Psorophora sava Theobald, Mon. Culic, v, 605, 1910. 



Obioirai. Description or Psobophoba s^va: 



Black with blue reflection, the legs with dense, short, outstanding scales; tips of 

 posterior femora white. Whitish scales on sides of head and a line at least on 

 thorax, but this is denuded. Wings smoky blackish. 



3 specimens, Trinidad, B. W. I. (F. W. Uriah) ; Trinidad, June (A. Busck). 



Type.— Cat. No. 9964, U. S. Nat. Mns. 



Debcbiption of Female, Male, and Labva of Psobophoba s^va: 



Female. — Proboscis long, cylindrical, uniform, labellae small ; black, covered 

 with slightly raised black scales with violaceous luster. Palpi about two-fifths 

 as long as the proboscis, covered with blue-black scales and some long black 

 bristles. Antennae slender; tori subspherical, dark brown, with a few small 

 setae within ; second joint nearly twice as long as succeeding joints, which are 

 subequal, ciliate ; basal whorls of few blackish hairs. Clypeus elongate, promi- 

 nent, rounded before, nude, shining blackish brown. Eyes black. Occiput dark 

 brown, broad and exposed; vestiture of somewhat broad curved white scales, 

 most numerous along ocular margin and posteriorly, a rather narrow lighter 

 bare area along median suture ; numerous black bristles, rather longer next the 

 eyes but not more abundant. 



Prothoracic lobes moderate, elliptical, prominent, remote, very dark brown 

 with many short black setae. Mesonotum prominent in front, arcuate, very 

 dark brown, largely devoid of vestiture ; a narrow line of dense, narrow, curved 

 black scales in the middle and a similar line on each side of this straight, 

 parallel, extending to the ante-scutellar space, separated from each other by 

 broad, bare areas; at anterior termination of lateral lines begins a line of 

 narrow, curved white scales which bends outward at middle, terminating at roots 

 of wings ; a number of black bristles, most dense laterally and over the roots of 

 the wings ; a line of long hairs at sides of ante-scutellar space. Scutellum trilo- 



