Insecutor Inscitiae Menstruus 



Vol. I OCTOBER. 1913 No. 10 



A NEW CUBAN CHAOBORUS 



{Dipiera, Culicide) 

 By FREDERICK KNAB 



Chaoborus antillum, new species. 



General coloration very pale yellowish, the mesonotum marked with 

 pale brown, the legs with many narrow brown rings, the wings with an 

 indistinct pale brown fascia on the outer third and trace of another on 

 based third. 



Male : Proboscis and palpi peJe brown. Antennae plumose, the joints 

 subcylindrical, elongate, white, with narrow black rings at the insertions 

 of the hair-whorls ; hairs of whorls very long, moderately abundant, pale. 



Mesonotum creamy yellow ; two closely approximated longitudinal 

 convex brownish fasciae on the anterior two-thirds of the disc, a pair of 

 much broader but less distinct brownish fasciae on the posterior haJf, situ- 

 ated well outward toward the lateral margins ; some pale brown cloud- 

 ings at sides of antescutellaur space and at sides of cinterior fasciae ; setae 

 long and coarse, pale. Prothoracic region light yellow. Scutellum pale, 

 with a margined row of very long pede setae. Postnotum light brown, 

 pede at the sides, nude. Pleurae pale, marked with dark brown. 



Abdomen elongate, depressed ; pede yellowish, with numerous coarse 

 yellowish hairs, particularly at the sides, very long ones on the claspers. 



Wings rather narrow, hyaline, clouded with brown at the forking of 

 the fifth vein and beyond the cross-veins, the latter cloud forming a wavy 

 indistinct band across the wing ; scales hair-like, ocher yellow in the cos- 

 tal region, the others pale except over the integumental cloudings, where 

 they are darker ; fringe long, pale. Halteres whitish. 



Legs coarsely hairy throughout ; pale, the femora and tibiae with a 



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