Insecutor Inscitiae Menstruus 



Vol. VII JULY-SEPTEMBER, 1919 Nos. 7-9 



FOUR NEW SOUTH AMERICAN MOSQUITOES 



(Dipt era, Culicid^) 

 By J. BONNE-WEPSTER and C. BONNE 



The following four species of Wyeomyia were bred by us 

 in Surinam. 



Wyeomyia occulta, new species. 



Female : Proboscis short and stout, distinctly swollen at tip, 

 with dark scales above, bluish gray reflection, pale scales below. 

 Apex with small hairs. Palpi short, one-seventh of proboscis, 

 dark. Antennae about as long as proboscis, joints slender, sub- 

 equal, pilose, brownish, joints nearest to tori thickened 

 apically ; tori subspherical, with a cup-shaped apical excavation, 

 with whitish pruinosity. Clypeus rounded, dark brown, prui- 

 nose, nude. Eyes nearly contiguous at vertex, black. Margins 

 of eyes with whitish pruinosity. Occiput clothed with dark 

 flat scales with bluish reflection, a large patch of white scales 

 on underside of the head. Two setae at vertex, projecting 

 between the eyes, and smaller ones on margins. 



Prothoracic lobes well separated, clothed with broad scales 

 with dull violet reflection, a row of coarse black bristles on 

 front margin. Mesonotum densely clothed with lanceolate, 

 appressed dark scales, with yellowish gray luster. Long black 

 bristles on anterior margin and over roots of wings. No hairs 

 on the disk. Scutellum trilobate, coloration similar to that 

 of mesonotum, each lobe with a tuft of brown bristles. Post- 

 notum elliptical, with flat white scales and a group of small 

 setae near posterior margin. Pleurae and coxae clothed with 

 patches of appressed silvery white scales. 





