888 



FAMILY XT.IV 



HOSTRTCTTID/F,. 



late. Elytra with small .iii-aimles arran.iipd in a network of lines, the spaces 

 hetweeu them sninoth. their snnmilts willi pale brown hairs. Len^h 4- 

 4.5 mm. 



Southern luilf of State; common. ^larch 9-Deeember 21. TTi- 

 bernates. Oecurs on woody funei and l)eneath ])ni'k of trees and 

 shnibs; also at maple sap in spring-. 



IL SiNOXYLON Dufts. 1825. (Gr., ''harm + wood.") 



Cylindrical beetles having the head completely concealed from 

 above by the thorax, which is truncate in front, wdth the apical half 

 covered with small tubercles; elytra obli(|uely truncate behind, their 

 surface punctate. One of the eleven species occurs in the eastern 

 United States and Indiana. 



16S6 (5339). 



SiNOXYLctN KAsiLAKE Sa.v, .Toiirn. Phil. Acad. Nat. Sci., Ill, 

 3823, 121 ; ibid. IT, IS]. 



C.vlindrical. Black ; elytra dull red- 

 dish-yellow on b;isal third. Antenna^ 

 lO-Joiulod; last two Jdiiils of maxillary 

 ]>ali)i e(|iial. Thnrax very convex, slop- 

 ing,' downward on apical half, angles 

 rduuded; surface densely punctate, and 

 with numerous small tubercles in front. 

 Elytra bent downward nearly at right 

 angles on apical fourth, with three tu- 

 bercles on each side of the declivity, the 

 Length 5..J-0 mm. (Fig. 349.) 



Fi?. 349. a, larva; 6, pupa; c, beetle 

 (After Riley.) 



latter coarsely pnnctiu-ed 



Fayette, Lawrence and Posey counties; scarce. May 23-August 

 23. Occurs beneath the bark of hickory, to the wood of wdiich it is 

 said to be very destructive. 



III. BosTRiCHrs Geoff. J 764. (Gr., '"hooked -!- hair.") 



Elongate, subcylindi-ical species, having the joints of the anten- 

 nal club shoi-t, subglobose ; hind angles of the thorax acute and 

 prominent. Three of the five known species have lieen taken in the 

 State. 



KEY TO INDIANA SPECIES OF BOSTRICHUS. 



a. Thorax with two hooked processes in front. 



h. Elytra with two costie, the surface clothed with patches of small ap- 



pressed scales. 1687. bicornis. 



hh. Elytra with one short basal costa, the surface clothed with hairs 



whicli are unevenly disiwsed in clusters. 1688. armiger. 



iKi. Thorax in front sinii)ly li'uncate; pubescence of cl.vlr.i in spols irrcmi- 



larly arr.aiiged; elyira without traces of ridges. 



1689. tkuncaticollis. 



