88 MISC. PUBLICATION 6 98, U. S. DEPT. OF AGRICULTURE 



plex Horn (the last belonging to the genus Amphicerus) without 

 designating a genotype. Lesne (1899) erected the genus Bostrychulus 

 for 18 species without designating a genotype, but he (1900) placed 

 Bostrychulus Lesne as a synonym of Micrapate Casey, stating that 

 Micrapate Casey had several months priority over Bostrychulus Lesne. 



KEY TO THE SPECIES OF MICRAPATE 



1. Apical contour of elytra (when viewed from above) distinctly angulated, 



the tips more or less emarginate dinoderoides (Horn), p. 88. 



Apical contour of elytra (when viewed from above) rounded or very 

 obtusely angulated, the tips conjointly broadly rounded 2 



2. Pronotum longer than wide; dorsal surface of body sparsely pubescent 



xyloperthoides (Jacquelin-Duval), p. 89. 

 Pronotum not longer than wide, quadrate or slightly wider than long 3 



3. Dorsal surface of body densely pubescent scabrata (Erichson), p. 90. 



Dorsal surface of body not densely pubescent 4 



4. Sutural margins gibbose on apical declivity of elytra, the sides abruptly 



deflexed 6 



Sutural margins not gibbose on apical declivity, uniformly elevated along 

 entire length, the sides not abruptly deflexed 5 



5. Elytra distinctly pubescent; pronotum not wider than long; clypeus dis- 



tinctly pubescent mexicana, new species, p. 91. 



Elytra not distinctly pubescent; pronotum wider than long; clypeus not 

 distinctly pubescent brasiliensis (Lesne), p. 92. 



6. Sutural gibbosity on apical declivity of elytra expanded laterally at middle 



of declivity 7 



Sutural gibbosity on apical declivity of elytra not expanded laterally at 

 middle of declivity ' cristicauda Casey, p. 93. 



7. Sutural gibbosity on apical declivity of elytra abruptly expanded at middle 



of declivity, bilobed on top bilobata, new species, p. 94. 



Sutural gibbosity on apical declivity of elytra gradually expanded at middle 

 of declivity, not bilobed on top labialis Lesne, p. 94. 



Micrapate dinoderoides (Horn) 



Sinoxylon dinoderoides Horn, 1878, Amer. Phil. Soc. Proc. 17 : 542, 543. 

 Micrapate dinoderoides Casey, 1898, N. Y. Ent. Soc. Jour. 6 : 66, 72, 73 ; Lesne, 

 1906, Abeille 30: 281; 1938, in Junk (pub.), Coleopt. Cat., pt. 161, p. 45. 



Male. — Dark reddish brown, underside of body usually in part 

 brownish black, the antennae, palpi, and tarsi yellowish brown. 



Head rather densely, coarsely punctate or granulose and sparsely 

 clothed with short, recumbent, whitish hairs on clypeus and front of 

 head, with long, longitudinal, parallel costae on occiput ; clypeal suture 

 obsolete ; labrum finely, densely punctate. 



Pronotum slightly transverse, widest at middle; sides broadly 

 rounded, with a small, broad tooth at apical angles ; posterior angles 

 broadly rounded; surface sparsely clothed with short, erect or re- 

 cumbent, inconspicuous hairs, densely, coarsely punctate on basal half, 

 densely, irregularly dentate on apical half, the teeth broad, variable 

 in size, semierect, and rasplike. 



Elytra at base slightly narrower than pronotum at middle; sides 

 vaguely expanded posteriorly, conjointly broadly rounded at apices, 

 with a vague emargination at sutural margins; apical contour (when 

 viewed from above) distinctly angulated; surface not deeply de- 

 pressed along sutural margin on apical declivity, coarsely, rather 

 densely, rugosely punctate, the punctures coarser and more or less 

 confluent on apical declivity, sparsely clothed with short, semierect, 

 yellowish hairs on apical half ; sutural margins on apical declivity not 



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