112 MOSQUITOES OF NOKTH AMERICA 



Male. — Proboscis bronzy beneath, silvery toward base. Palpi similar to those 

 of the female. Antennse also similar, each joint with a small apical whorl, hairs 

 of basal whorls longer and more abundant than in the female. Coloration as 

 in the female. Abdomen subcylindrical, somewhat expanded toward tip. Mid 

 tarsi slightly incurved, with a single claw, those of hind feet unequal ; formula, 

 0.0-0-0.0. 



Length : Body about 2 mm. ; wing 2.5 mm. 



Genitalia (plate 4, fig. 33) : Side-pieces over twice as long as wide, tips much 

 tapered ; three setae in a line below middle ; clasp-filament with a long slender 

 stem, tip expanded and divided into three lobes arising from a circular, disk- 

 like expansion ; inner lobe slender, elongate ; middle lobe conical, with rows of 

 setse and teeth ; outer lobe arising from angle of mid lobe, with a rounded, disk- 

 like termination. Harpes slender, concave, the inner margin thickened, curved 

 at tip and obscurely dentate. Harpagones and unci forming small basal cones. 

 Basal appendages represented by a row of six setae on each side. 



Larva, Stage IV (plate 89, fig. 383). — Head subquadrate, anterior margin 

 rounded, wider than long, sides somewhat flattened, no distinct posterior 

 angles ; antennae small, slender, slightly curved, with a small tuft beyond middle; 

 upper pair of dorsal hairs long, single; lower tufts triple, long; ante-antennal 

 tufts of four long hairs. Abdominal lateral hairs very long, in fours on first 

 segment, threes on second, single on third to sixth; subdorsal and subventral 

 tufts stellate. Air- tube long, tapered gradually from near base, terminal half 

 uniform, slender; about eight times as long as wide; terminal hooks slender; 

 hairs abundant, long, uniformly distributed iu two series, except near base and 

 near apex, where they are absent, single, except the basal posterior tuft, which 

 is two-haired. Comb of eighth segment of large spines ia a long row, nowhere 

 doubled, the rows nearly meeting ventrally; scales of comb stout, elongate, 

 subequal, only slightly smaller ventrally. Anal segment longer than wide, with 

 a large dorsal plate which reaches well down the sides, dorsal tuft of two very 

 long hairs on each side ; lateral hair single, long, arising from an angulation of 

 the plate ; subventral tuft multiple, rather long and few-haired, situated oppo- 

 site the lower extension of the plate. Anal gills unequal, upper pair consider- 

 ably shorter than lower pair, broadly lanceolate, with rounded tips. 



The larvae live in the water between the leaves of epiphytic Bromeliaceae. 

 Mr. Knab found them in three cases associated with the larvae of Wyeomyia 

 dblabes, but in smaller numbers. In some bromelias near the base of a fa-ee 

 overhanging a stream, associated with Wyeomyia dblabes, Megarhinus superbus, 

 Gulex rejector, and Anopheles sp., probably A. neivai; in bromelia on a tall 

 mango tree twenty feet from the ground, associated with Wyeomyia dblaibes and 

 Culex rejector, and in another bromelia on the same tree, fifty feet from the 

 ground, associated with Wyeomyia ablabes, Culex stenolepis, and Megarhinus 

 superbus. 



Southern Mexico. 



C6rdoba, larvse in Bromeliaceae in several places near town, January 16, 

 March 17 and 31, 1908 (P. Knab). 



WYEOMYIA HOSAUTUS Dyar & Knab. 

 Wyeomyia hosautus Dyar & Knab, Journ. N. Y. Ent. Soc, xv, 211, 1907. 

 Wyeomyia hosautus Busck, Smiths. Misc. Colls., quart, iss., lii, 73, 1908. 

 Wyeomyia hosantus Theobald, Men. Culic, v, 625, 1910. 



Oeiginai Descbiption of Wteomtia hosatjtus : 



Proboscis rather short and stout, enlarged towards the apex, black scaled; palpi 

 short, black scaled; clypeus prominent, black with fine grayish pubescence; the 

 wedge between the eyes covered with silvery scales; occiput entirely dark scaled 

 with blue and green iridescence, no pale margin to the eyes; prothoracic lobes large 



