1002 MOSQUITOES OF NOETH AMERICA 



Legs long and slender; vestiture black with numerous small white spots; 

 femora and tibiae finely speckled with white; hind tarsi with seven white rings 

 or spots on first joint, four on the second, third and fourth white at base and tip 

 and ringed in the middle, fifth all white ; fore tarsi with six white rings or spots 

 on first joint, second joint with three, third and fourth white at base and apex, 

 fifth white ; mid tarsi with the maculation much reduced, the third, fourth and 

 fifth joints without well-marked rings. Claw formula, 0.0-0.0-0.0. 



Length : Body about 4.5 mm. ; wing 4 mm. 



Male. Proboscis uniform, nearly straight, black-scaled. Palpi about as 

 long as the proboscis, the last two joints swollen, forming a distinct club and 

 with long, dense yellowish hairs ; two last joints golden-yellow scaled, with a 

 narrow dark ring at the articulation ; long joint black-scaled, a large patch of 

 yellow scales at base above, a broad yellowish ring at the middle, a long dorsal 

 mark of yellowish scales towards apex, extreme tip also yellow. Antennae 

 plumose; last two joints long and slender, rugose, pilose, black, the others 

 rather short, slender, subequal, pale, with dark basal rings ; hairs of whorls long, 

 dense, brown with yellow luster. Coloration as in the female. Wings narrower 

 than in the female, the stems of the fork-cells longer, the vestiture sparser. 

 Claw formula, 2-0.0-0.0. 



Length : Body about 5 mm. ; wing 4 mm. 



Genitalia (plate 39, fig. 359) : Side-pieces less than twice as long as wide, 

 the tips conically rounded ; a stout seta near the middle of the inner margin, and 

 two separated stouter ones toward the base; clasp-filament long and slender, 

 slightly attenuated mesially, with a minute terminal claw. Basal appendages 

 leaf -like. Unci with spatulate terminal appendages. 



Larva, Stage IV. Head elliptical, longer than wide; antennae moderately 

 stout, rather long, finely spinulate, the tuft at basal third; dorsal head-hairs 

 feathered, anterior series with the median pair simple, those on the anterior 

 angles double, each hair divided at tip. iVbdomen with five pairs of fan-shaped 

 tufts (plate 130, fig. 458), the single elements lanceolate, the edges on the 

 outer part slightly notched. Lateral plates of eighth segment posteriorly with 

 a series of teeth alternatingly long and short. Anal segment with dorsal plate 

 and well-developed ventral brush ; anal gills rather long, lanceolate, blunt at tips. 



Mr. Busck found the larvae in still pools of a running brook, in a slowly run- 

 ning spring full of leaves, and in an open pool. The females have been taken 

 in habitations and filled with blood. 



Panama. 



Eio Chagres, June 7, 1907 (A. Busck) ; Tabernilla, Canal Zone, May 2, 1907 

 (A. Busck) ; Barracks, Caldera Island, Porto Bello Bay, January 4, 1908 (A. 

 H. Jennings) ; Black Barracks, Gatun, Canal Zone (A. H. Jennings) ; Ancon, 

 Canal Zone (A. H. Jennings) ; Gold Hill Camp, Canal Zone, May 9, 1908 (A. 

 H. Jennings) ; Miraflores, Canal Zone, January 5, 1909 (A. H. Jennings) ; 

 Porto Bello (A. H. Jennings). 



Anopheles malefacior much resembles the Brazilian A. pseudomaculipes 

 Peryassu (Os Culic, do Brazil, 108, 1908) in general appearance as well as in the 

 wing-pattern and the other details of coloration. The latter species, of which we 

 have a specimen from Xerem, State of Eio de Janeiro, kindly transmitted by the 

 Instituto Oswaldo Cruz, differs especially in the shape of the wing-scales, these 

 being larger and much more elongate than in our species. 



ANOPHELES EISENI Coquillett. 



Anopheles eiseni Coquillett, Journ. N. Y. Ent. Soc, x, 192, 1902. 

 Anopheles eiseni Giles, Revision Anophelinse, 24, 1904. 

 Anopheles eiseni Blanchard, Les Moustiques, 620, 1905. 

 Myzomyia tibiamaculata Neiva, Brazil-Medico, xx, 288, 1906. 



Myzomya tibiamaculata Neiva, Uma nova especie de Anophelina Brazileira (Trab. 

 Inst. Manguinhos), 1906. 



