354 NEOTROPICAL PSELAPHIDAE 



The genotype, fuchsi Brendel, has been found with Cremastogaster 

 lineolata and Cremastogaster leviuscula; other hosts are listed for the species 

 later, but it should be noted that the species ecology has not been worked 

 out, as it has for Adranes and Claviger. Gallardo is the only one to have 

 written on the host-beetle relationship, finding the species elegans completely 

 tolerated by its host. 



The general construction of the genus may be understood from the fol- 

 lowing description of a new species: 



Fustiger veracruzensis new species 



Holotype Male. Measurements: Head 0.36 x 0.32 mm.; pronotum 0.31 

 X 0.47 mm.; elytra 0.60 x 0.77 mm.; abdomen 0.76 x 0.79 mm. Total length 

 2.03 mm. Greatest width 0.79 mm. (PI. II, VI, VII, XVII, XIX). 



Shining reddish-yellow brown. Integument of antennae asperate-strigose ; 

 legs lightly, sparsely subasperate; head and pronotum strongly sculptured with 

 crowded, longitudinally ovate, glabrous cells having strong, common, carinate 

 walls; elytra with sparse, uniformly distributed, subasperate punctures, and 

 the posterior third medianly strigose; abdomen subglabrous. Pubescence long, 

 monaxon, very fine and apically directed on antennae; short, strongly arcuate, 

 subsquamoid on head and pronotum; elytra with more slender, subappressed 

 setae more or less arranged in rows on flanks and disc, and in addition a very 

 rudimentary trichome of about twelve very long setae at postero-apical angle; 

 abdomen with fully formed trichome on the lateral margin of first visible tergite. 

 This trichome is in two parts, a basal tubercle is surmounted by a brush 

 of long golden setae which are directed posteriorly; second, an apical tubercle 

 is surmounted by a brush of long golden setae which fan out mesio-basally. 

 The dorsum of the fused first three visible tergites has about twenty-six very 

 long, slender, erect setae in about three transverse rows, the apical half of 

 each seta directed anteriorly towards basal depression. In addition, the 

 dorsum and last two tergites are sparsely supplied with excessively minute, 

 prostrate setae. 



Head subquadrate, being only 12 per cent longer than wide through eyes. 

 Tempora long, subparallel, nearly as long as eyes. Eyes median, subreniform, 

 each of 30 prominent facets. Occiput and subrectangular temporal angles 

 clearly set off from alutaceous cervicum. A pair of minute, poroid vertexal 

 foveae on a line through posterior eye margins. Antennal acetabulum, each 

 side, long, arcuate, and glabrous, extending from anterior eye margin to 

 vertical, narrow, frontal lamina separating acetabulae. Clypeus subquadrate, 

 extensively involved with front in acetabulae; transversely triangular when 

 seen in optical apical view. Labrum very transverse and granular. Oral aperture, 

 framed by clypeus, genae, and mentum, nearly as wide as head but very nar- 

 row, being elongate-elliptical, arcuate. Maxillary palpi with a minute sub- 

 spherical basal segment or piece, and a much larger, strongly pedunculate- 

 obconical distal segment or portion — the palpi are minute and lie wholly 



