ANOPHELES APICIMACULA 997 



Male. — Proboscis rather slender, uniform, straight, black-scaled. Palpi 

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

 club and with long, dense, black hairs ; vestiture black, last Joint white at tip, 

 last two white-ringed at base and with some scattered white scales, a narrow 

 white ring at middle of long joint. Antennae plumose; last two joints long and 

 slender, rugose, pilose, black, the others short, about three times as long as wide, 

 pale, with black rings at insertions of hair-whorls ; hairs of whorls long, dense, 

 black. Coloration as in the female. Abdomen elongate, depressed, parallel- 

 sided; lateral ciliation of long, coarse, irregular brownish hairs. Wings nar- 

 rower than in the female, the stems of the fork-cells longer, the vestiture more 

 sparse. Claw formula, 2-0.0.-0.0-0.0. 



Length: About 3.5 mm.; wing 3 mm. 



Genitalia (plate 39, fig. 361) : Side-pieces about twice as long as wide, tips 

 conically rounded ; two stout setse close to the base, another at middle of inner 

 margin ; clasp-filament long and slender, medianly slightly attenuated, with a 

 small articulated terminal claw. Basal appendages large, leaf-like. Unci 

 columnar, bearing several spatulate appendages at tip. 



Larva, Stage IV. — Head rounded, longer than wide, bulging at the sides, 

 front conically produced; dorsal head-hairs single, but numerously branched, 

 in a line between antennas, a smaller hair at base of antenna ; two long approxi- 

 mated spines on front margin (antennse wanting) . Eyes large, pointed. Men- 

 tal plate small, with a median tooth and four on each side, the first two evenly 

 spaced, the third remote, the fourth small. Mandible elliptical, truncate on 

 front margin; a row of long hairs on outer base; four filaments before tip with 

 a tuft of little hairs; a row of cilia from a collar; five feathered filaments on 

 outer margin; dentition large, two small teeth, a large slightly notched one 

 and two more small teeth followed by a square process composed of confluent 

 spines; a row of long hairs at the basal articulation. Maxilla transversely 

 quadrangular, triangularly excavate centrally, the excavation lined with cilia, 

 which also fringe the straight outer margin and become longer on the inner 

 angle ; two little filaments in the excavation ; palpus large, only slightly articu- 

 lated to maxilla, exceeding it both basally and distally; three spines and two 

 spatulate appendages at tip ; an outer dendritic tuft (lost) . Thorax subquadrate, 

 about as long as wide; hairs short, consisting of branched hairs, single hairs and 

 tufts; mesothorax sparsely haired. Abdomen stout, anterior segments shorter; 

 long feathered lateral hairs on first three segments, double on first and second, 

 single on third; posterior hairs small, smooth; a dorsal series of five pairs of 

 fan-shaped tufts on third to seventh segments. Air-tube sessile, subquadrate, 

 roundedly angled posteriorly. Lateral plates of the eighth segment posteriorly 

 with a series of spines, five very long ones and niae short ones, about one-third 

 as long as the long ones and irregularly alternating with them. Anal seg- 

 ment about as long as wide, with a small dorsal plate ; dorsal brush a long and 

 a short tuft on each side; a single long lateral hair below the plate; ventral 

 brush well developed, of long branched tufts; anal gills moderate, bluntly 

 pointed. 



Mr. Knab bred a single specimen from a pool in a stream-bed, associated 

 with Anopheles strigimacula and Culex derivator; Mr. Jennings found larvae 

 in a water course. 



Tropical American mainland. 



Cordoba, Mexico, June 13, 1905 (P. Knab) ; Livingston, Guatemala, May 

 11, 1906 (H. S. Barber) ; Bluefields, Nicaragua (W. P. Thornton) ; Colon, 

 Panama (A. I. Kendall, W. M. Black) ; Tabernilla, Canal Zone, Panama (A. 

 Busck) ; Caldera Island, Porto Bello Bay, Panama, January 21, 1908 (A. H. 

 Jennings) ; Cucaracha, Canal Zone, Panama, May 14, 1908 (A. H. Jennings) ; 

 Las Cascadas, Canal Zone, Panama, February 5, 1908 (E. L. Turner) ; East La 

 Boca, Canal Zone, Panama, November 28, 1908 (A. H. Jennings) ; Trinidad, 

 West Indies (F. W. Urich). 



