364 PROCEEDINGS OF THE NATIONAL MUSEUM vol.93 



CHALCOHYUS SECURIGERUS, new species 



Plate 30, Figures 22, 23, 24 



Female.— -Light to dark reddish brown; 1.25 mm. to 1.68 mm. long, 

 holotype 1.60 mm. long, 2.55 times as long as wide ; anterior end of 

 pronotum and posterior ends of elytra darker. 



Frons moderately concave from eye to eye and from epistoma to 

 well above upper border of eye, surface shining throughout, brilliantly 

 shining and impunctate below in median third, finely, rather closely 

 punctured at sides and above, hairs short and inconspicuous over most 

 of punctured area, with a thin fringe of very long yellow hairs extend- 

 ing from above nearly to epistomal margin and partly veiling surface; 

 epistomal margin at each side with a dense brush of long yellow hairs 

 arising just above base of mandible and extending ventromesad, con- 

 cealing all but the tip of the mandible. Eye small, short oval, inner 

 line entire, facets moderately small. Antenna (pi. 30, fig. 24) nearly 

 half as long as body, the club and distal joint of funicle extending 

 beyond posterior border of pronotum; scape less than one-fourth as 

 long as entire antenna, testaceous, somewhat widened distally, with 

 only a few short hairs; funicle of six long, loose-jointed segments, of 

 which the pedicel is testaceous and nearly half as long as the scape, 

 distal segments piceous-brown, more slender, of nearly uniform diam- 

 eter, and subequal in length except the last; club piceous, longer 

 than scape, little more than half as long as funicle, hatchet shaped or 

 lance shaped, arrangement of setae showing little evidence of sutural 

 rows. 



Pronotum 1.05 times as wide as long, widest at base, posterior border 

 nearly straight, posterior angles scracely rounded; sides feebly, ar- 

 cuately converging on posterior half, feebly constricted in front of 

 middle, broadly rounded in front, anterior margin not serrate; an- 

 terior area with moderate-sized asperities and short, stout bristles; 

 summit moderately high; posterior area nearly horizontal, shining, 

 reticulate, finely, not closely punctured, with fine granules just behind 

 summit ; vestiture of short, fine hairs on disk, longer and coarser near 

 summit. 



Elytra slightly wider than pronotum and 1.66 times as long, 1.57 

 times as long as wide; sides subparallel on anterior three-fourths, 

 moderately rounded behind ; surface moderately shining, indistinctly 

 reticulate ; finely punctured in regular rows, only first strial row im- 

 pressed ; interspaces finely rugulose, very finely punctured, with rather 

 short, fine, erect bristles, scarcely visible except in profile. Declivity 

 convex, much darker in color, striae punctured as on disk, with a few 

 minute hairs; interspaces more closely punctured, with rather short, 

 erect spatulate, scalelike bristles in double rows on first three inter- 

 spaces. 



