316 NEOTROPICAL PSELAPHIDAE 



(If parvipalpis has III longer than wide it will run to setipes of 

 Sharp which is better known: the latter has lighter pubescence and 

 is larger) 

 Posterior tibia with an apical spur 14 



14. Pronotum longer than wide 15 



Pronotum wider than long; 2.4 mm.; Venezuela soror 



15. III-X progressively more transverse; Brazil vulpinus 



III-VIII regularly transverse; not known from Brazil 16 



16. Body elongate; XI much longer than four preceding; posterior tibial 



spur long; 2.4 mm. ; Venezuela cavipalpus 



Body short and thick ; XI as long as or slightly longer than four pre- 

 ceding; posterior tibial spur much shorter; 2.1 mm.; Bolivia 



sulcipalpus 



Key to Species of Group X 



Intel-mediate trochanters each strongly spined; Venezuela and 

 Colombia lateritius Male 



Intermediate trochanters not spined; 2.9 mm.; Colombia 



decipiens Male 



Apparently Raffray had access to the type of lateritius Aube, and since 

 this species is the genotype, the following data have been translated from 

 Raffray (1904) to give a rough word picture of this key form. The head has 

 an antennal tubercle nearly as long as the rest of the head and the two vertexal 

 foveae are separated by a distance nearly twice as great as that separating 

 either from its adjacent eye. Distal palpomere is subcylindrical, with sub- 

 acuminate apex, and an entire longitudinal sulcus on the internal face. The 

 long antennae have III longer than wide, obconical; IV-VII square; VIII 

 slightly transverse; IX and X large, gradually transverse; XI regularly oblong- 

 oval. The pronotum is longer than wide, subconical; the median fovea is free 

 but transversely oval, with a short vestige of the transverse sulcus extending 

 from each side. The male has each posterior tibia supplied with a short, 

 straight, obtuse apical spur and the intermediate trochanters each prolonged into 

 a strong, obtuse spine; metastemum flattened and medianly slightly im- 

 pressed. 



Key to Species of Group XI 



III to VI longer than wide 2 



III to VI quadrate, as wide as long 3 



2. II twice as long as wide, IX and X with length and width equal; 



pubescence subappressed, brown; 3.4 mm.; Bolivia. . . .longepilosus 



II slightly longer than wide, IX and X much longer than wide; 



pubescence bristling, yellow ; 3.6 mm. ; Brazil longiceps 



3. IX and X very large, much larger than VIII; head slightly longer 



than wide; 2.3 mm.; Venezuela and Colombia micans 



