60 NEOTROPICAL PSELAPHIDAE 



ally compressed, second tarsomere very much longer than third, third tarsomere 

 ending in a pair of unequal claws. 



Genotype: Barrojuba albertae new species 



Barrojuba albertae new species 



Measurements: Head 0.469 x 0.469 mm.; eyes 0.201 mm. long; antennae 

 0.904 mm. (club 0.569 mm.) long; cervicum 0.067 mm.; pronotum 0.482 x 0.603 

 mm.; elytra 0.683 at suture x 0.871 mm. at posterior third; abdomen 0.75 mm. 

 X 0.8 mm.; first tergite 0.24 mm., second tergite 0.19 mm., third tergite 0.16 

 mm., fourth tergite 0.10 mm., fifth tergite 0.05 mm.; hind tibiae 0.67 mm.; hind 

 tarsi 0.45 mm., first tarsomere 0.03 mm., second tarsomere 0.3 mm., third tarso- 

 mere 0.12 mm., tarsal claws 0.04 mm. long claw; total length 2.45 mm. x 0.87 

 mm. greatest width. (PI. XVIII.) 



Color reddish-brown with maxillary palpi, antennae and legs yellowish- 

 brown. Pubescence abundant, long, golden; average length of body pubescence 

 0.067 to 0.12 mm. 



Head rounded-triangular. Eyes very large, hirsute, much longer from a 

 dorsal view than sides of head either anterior or posterior of the eyes; com- 

 posed of about 56 very large, coarse facets. Tempora converging slightly behind 

 eyes, not prominent. Occiput medianly sinuate. Vertex simple, evenly convex, 

 not appreciable higher than eyes. Vertexal foveae very far forward, on a line 

 passing just posterior to posterior margin of first antennal segment, vestigial, 

 small and difiBcult to locate, appearing as a pair of minute, oblique scars, with- 

 out much depth, mutually close together (being separated by the width of two 

 eye facets) , as though they were the byproduct of the articulation of the first 

 antennal segment with the mesio-dorsal wall of its acetabulum. These scars may 

 not be true vertexal foveae, viz. they may not have a connection with the cep- 

 halic endoskeleton, in which case true vertexal foveae are lacking. Vertex and 

 front densely, cribrately, coarsely punctate (about 24 to 32 punctures per 

 .01 sq. mm.) ; front evenly and continuously declivous, simple, strongly nar- 

 rowed by antennal acetabula. 



Antennae eleven-segmented, I and II large; I longer and wider than II; 

 I and II suboblong; III shorter and narrower than II, obconical; IV, V, VI, and 

 VII gradually and progressively wider than III; IV obconic; V subquadrate; 

 VI and VII progressively transverse and trapezoidal; VIII, IX, X and XI form- 

 ing a long, distinct club, abruptly longer than VII, subequal in width, slightly 

 wider than VII; VIII, IX, and X cylindrical; VIII twice as long as VII, and a 

 little longer than IX, and subequal in length to X; XI ovate-acuminate, twice 

 as long as X. 



Maxillary palpi four-segmented ; first segment minute, cylindrical ; second 

 segment long, slender, pedunculate at base, broadening apically ; third segment 

 broader and shorter than second, pyriform, broadening apically; fourth segment 

 largest, broader than third and longer than second, ovate-acuminate, densely 

 clothed with very short setae and bearing apically a small palpal cone. 



