26 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 77 



PSEUDANTHRIBUS BIPUNCTATUS Schaeffer 



Anthrilms Mpunotatus Schaeffer, Journ. N. Y. Ent. Soc, 1904, vol. 12, p. 235 



Described from Brownsville Tex., where it was found in April 

 and May. 



PSEUDANTHRIBUS COENUTUS Say 



Anthrtbus cornutus Say, Desc. new species Curculionites, 1831, p. 4. 



Adultfe found on honey locust {Gleditsia trianccmthos) by C. Dury 

 and bred from stems of tamarix {TaTnarix gallica) by Popenoe (Beu- 

 tenmiiller, 1893). Not rare on dead branches in the District of Co- 

 lumbia (Ulke, 1902, p. 55). Bred from stems of cotton {Oossypium 

 hirsutum) July 13, 1895, at San Diego, Tex. Taken on Quercus sp. 

 at Longview, Tex., March 26, 1908, by E. S. Tucker; on Acacia sp. at 

 Sabinal, Tex., June 3, 1910 by F. C. Pratt. Has been taken at lights 

 at Gregory and Brownsville, Tex. Occurs in the District of Colum- 

 bia, Georgia, Florida, Alabama, Tennessee, Loui'siana, Illinois, and 

 Texas. 



(The Tampa, Fla., female has disk of elytra tesselated much as in one of the 

 unusually dark specimens of mixtus, and is similar in most structural characters 

 also. It has, however, coarser elytral granulations, an even pronotum, and a feeble 

 postscutellar carina, and is therefore placed with virginicus). 

 2a. Elytra subevenly tessellated over entire surface, or at least never with an extensive 

 discal area that contrasts in color with sides (miwtus sometimes has a dark rectan- 

 gular scutellar spot) ; postscutellar carina apparently well developed, extending 

 from side to side, or only narrowly interrupted at middle, in the specimens exam- 

 ined ; mid tibia of male without a spine at apex ; antennae noticeably thin, the club 

 only moderately flattened and with its segments symmetrically, not obliquely, 

 emarginate 3. 



3. First segment of fore tarsus, as seen from above, pale on basal one-third only, apical 



two-thirds black ; ground color of body above blackish-brown, the elytral tessella- 

 tions unusually even and distinct ; pronotum without prominences ; postscutellar 

 carina strong. 



Male. — Second segment of abdomen without acute tubercle, third segment shal- 

 lowly concave at middle ; eighth antennal segment heavy, conically widened towards 

 apex where its width Is a little more than half its length. 



Length of male holotype, 6.5 mm. (female unknown). Huachuca Mountains, 



Ariz : tesselatus Schaeffer. 



3a. First segment of fore tarsus pale in basal half or basal three-fourths, black apically ; 

 second abdominal segment of male with an acute tubercle on median line near sec- 

 ond suture; eighth antennal segment slender (male and female), its width at apex 

 distinctly less than half its length ; size smaller ; eastern United States 4. 



4. Ground color of elytra normally ochreous, rarely darker ferruginous, the pronotum with 



blackish and reddish mottllngs, the generally conspicuous elytral tessellations com- 

 posed of black and whitish spots ; a transverse rectangular dark scutellar spot often 

 present ; of the dark tessellations, those across middle of elytra on third and fifth 

 intervals are larger, and are generally nearly opposite each other, giving the appear- 

 ance of a broken, transverse bar ; pronotum generally with a quite distinct median 

 prominence, rarely with feeble lateral ones also. 



Length, 3 to 5.5 mm. New York, Maryland, Ohio, Virginia, North Carolina, 



Georgia, and Texas mixtus LeConte. 



4a. Ground color above very dark, almost black, with a smoky -gray to slate-gray tinge ; 

 pronotal surface uniform black (excluding the usual, short, apical, white line and 

 occasional small spots of whitish pubescence) ; elytral tessellations obscure, gen- 

 erally formed by black spots which, in some specimens, alternate with gray spots ; 

 pronotum with median elevation less frequently developed and less prominent, than 

 in mixtus. 



Length, 2.75 to 5.25 mm. l/ouisiazia, Florida, and Maryland moestus LeConte. 



— L. L. Buchanan. 



