INSECUTOR INSCITI^ MENSTRUUS 165 



DIAGNOSES OF NEW MOSQUITOES FROM SURI- 

 NAM, WITH A NOTE ON SYNONYMY 



(Dipt era, Culicidce) 

 By J. BONNE-WEPSTER and C. BONNE 



Sabethes bipartipes Dyar and Knab. 

 Sabethes chroiopus Dyar and Knab. 



Male specimens of Sabethes bipartipes have never been 

 found, neither females of Sabethes chroiopus. Iti July, 1919, 

 we found some larvae and pupse in rather clear water, held by 

 a fallen banana-leaf. From the larvae we reared Limatus 

 cacophrades Dyar and Knab and Lemmamyia methysticus 

 Dyar and Knab ; from the pupse, five female Sabethes bipar- 

 tipes and two male Sabethes chroiopus. This makes it very 

 probable that Sabethes bipartipes and chroiopus represent fe- 

 males and males of one species, which shows sexual dimorph- 

 ism in the coloration of the paddles. 



Sabethoides imperfectus, new species. 



Female. Proboscis long, slightly swollen at apex, black. 

 Palpi one-seventh of proboscis, black. Antennae moderate. 

 Clypeus nude. Eyes large, contiguous at vertex. Occiput 

 clothed with flat, shining violet and purple scales. Prothoracic 

 lobes collar-like with blue flat scales. Mesonotum with green 

 and coppery scales, lighter on the marigns. Scutellum trilo- 

 bate, vestiture similar to that of mesonotum. Postnotum with- 

 out scales, four setae on posterior end. Pleurae and coxae 

 white. Abdomen short, compressed, dorsal vestiture bluish 

 with irregular, basal coppery-white bands ; the sides with blue 

 and white scales intermixed, forming patches on the segments, 

 venter pale golden. Wings rather narrow, infuscated ; out- 

 standing scales of veins elliptical, obliquely subtruncate. Legs 

 slender, black, with coppery and violaceous reflections ; mid 

 tarsi with apex of second, all the third and all the fourth joint, 

 except the tip white on one side. Claw formula : 0.0-0.0-0.0. 

 Length : Body, 3.5 mm. ; wing, 3 mm. 



This species comes very near to Sabethoides nitidus Theob. ; 

 the proboscis is more swollen, the abdomen is much shorter. 



