882 



FAMILY XLI1I. PTINIDxE. 



XV. Protheca Lec. 1865. (Gr., "first + case or box.") 



Oblong-oval species clothed with semierect pubescence; thorax 

 wider than long, gradually narrowed in front, sides nearly straight, 

 hind angles rounded, front angles rectangular and sharply de- 

 fined. Two species are known, one of which has been taken in the 

 State, while the other probably occurs. 



KEY TO SPECIES OF PEOTHECA. 



a. Antennae 9-jointed; punctures of elytral series coarser, distinct to apex. 



1676. PUBEKULA. 



aa. Antennas 11-jointed ; punctures of elytral rows fine, obsolete behind the 

 middle. hispida. 



1676 (5319). Peotheca puberula Lec, Proc. Phil. Acad. Nat. Sci., 1865, 

 241. 



Oval, less than twice as long as wide. Dark brown, moderately shin- 

 ing ; pubescence inclined, fine and rather sparse. Antennae 9-jointed, the 

 seventh to ninth joints forming a broad club, longer than the preceding 

 united. Thorax rather coarsely but not deeply punctate, the punctures 

 closer on the sides. Scutellum as long as wide. Elytra feebly striate, the 

 punctures of the striae rather coarse and close. Length 1.7-2.2 mm. 



Marion and Knox counties; rare. June 8-November 17. Taken 

 on the later date by sifting. 



P. hispida Lec, brown, length 1.6-2.4 mm., is recorded from 

 Ohio and Michigan. 



XVI. Dorcatoma Herbst. 1792. (Gr., " deer + joints.") 



Small oval or moderately elongate convex species, having the 

 antennas 10-jointed, the first joint large, ear-shaped; second much 

 smaller, dilated at middle; third to seventh narrower and very 

 small; eighth to tenth forming a broad club, much longer than all 

 the preceding ; the tenth oval, one- third longer than ninth, more or 

 less curved and rounded at tip. (Fig. 3, No. 6.) Thorax evenly 

 convex, sides nearly straight. Prosternum short, concave, pro- 

 duced behind into two long more or less widely separated horn- 

 like processes which fit into cavities in the mesosternum, these vis- 

 ible only when insect is unfolded. Elytra with two nearly entire 

 marginal stria? and sometimes a short basal third stria. Two of 

 the three known species occur in Indiana. 



KEY TO INDIANA SPECIES OF DOECATOMA. 



a. Pubescence erect ; size smaller, not over 2 mm. ; elytra finely punctate. 



1677. SETULOSUM. 



aa. Pubescence of upper surface recumbent ; size larger, 2.5-3 mm. ; elytra 

 more coarsely punctate. 1678. dresdensis. 



