38 INSECUTOR INvSClTl^ MENSTRUUS 



BROMELICOLOUS ANOPHELES 



(Diptera, Culicidcc) 



By HARRISON G. DYAR and FREDERICK KNAB 



In the American tropics the water held l)y the leaf-bases of 

 Bromeliaceas has been found to be the natural habitat of the 

 larvae of three species of Anopheles. These species are closely 

 related and of characteristic appearance, thus forming a small 

 natural group within the genus. A fourth species, hitherto 

 undescribed and differing only in a few details, is at hand. 

 While the larval habits of this fourth species have not been 

 definitely established, its close resemblance to the others, and 

 the fact that it occurs in forested regions, warrant the conclu- 

 sion that its larvae occur in water-bearing bromeliads. 



The species under consideration may be separated as fol- 

 lows: 



1. Wing with four white spots involving costa and first vein 2 



Only the two outer spots involving the costa ncivai H. D. & K. 



2. Third vein broadly white in the middle 3 



Third vein black, a minute white spot at base hylephilus n. sp. 



3. Hind tarsi with the last four joints white and with black rings at 



their bases boliviensis Theob. 



Hind tarsi with the first four joints black, apically ringed with 

 white, the fifth wholly black bellator D. & K. 



Anopheles hylephilus, new species. 



Female. — Proboscis slender, uniform, black-scaled. Palpi 

 as long as the proboscis, uniform, black-scaled, the scales 

 roughened toward base, a minute spot at base of last joint and 

 the tip white. Occiput blackish gray, densely clothed with 

 erect, broadly ovate black scales, some narrower whitish ones 

 in front, a tuft of white hair-scales projecting between the eyes. 



Alesonotum elongate, pale gi'ay pruinose, medianly with two 

 narrow, straight, impressed black stripes, obsolete on posterior 

 third; close to lateral margins a pair of broader black stripes, 

 attenuated at both ends, narrowly interrupted beyond the mid- 

 dle by an oblique gray line ; disk with scattered pale hairs, an- 

 terior and lateral margins with a border of fine whitish scales. 

 Scutellum narrow, collar-like, gray-brown, with dark marginal 



