058 FAMILY IV. SCOLYTID^E. 



Marion, Lawrence and Posey counties, Ind., frequent; April 

 14 July 29. Swarthmore, Pa., Jan. 15. (Wenzel.) Occurs from 

 Atlantic States to Florida, westward to Iowa. Found in bark of 

 old stumps in swamps in South Carolina. (Zimmerman.) Min- 

 ing under green bark on living injured and dying mulberry and 

 in broken branches, April 9 Dec. 4, the adults hibernating in 

 outer bark on living trees. (Hopkins.) Besides mulberry, Swaine 

 gives hackberry and paper mulberry as food plants. Schwarz 

 (1893, 146) states that in the last named the irritation caused by 

 the working of the female starts an abnormal growth, consisting 

 of ridges, blisters and tubercles, which produce a resemblance to 

 an incipient black-knot. 



1064 (- -). PHLCEOPHTHORUS I-ICE^E Swaine, Can. Ent, XLIII, 1911, 220. 



More slender than liminaris or frontalis. Brown to black, sparsely 

 hairy. Antennae with club of three segments, each with lateral dilations 

 less elongate than in frontalis; head subglobose. Thorax with lateral 

 margins slightly, front margin broadly rounded, sparsely clothed with 

 rather stout yellowish hairs arising from the sparsely placed, sligntly 

 tuberculate, very coarse punctures. Elytra rather elongate, sides sub- 

 parallel, strongly narrowed behind, base raised and margined with stout 

 recurved crescentic tubercles, deeply punctate-striate, strife with large, 

 deep, closely placed punctures; intervals strongly raised, carinate, with 

 a row of setose tubercles; larger behind, forming serrations on declivity. 

 Tibiae with one submarginal and six distal spines and tubercles, clothed 

 with long hairs. Length 2 2.5 mm. 



Province of Quebec, Canada. In dead but green branches of 

 Picea canadensis Mill. 



II. PHLOSOSINUS Chapuis, 1869. (Gr., "bark"+"curse.") 



Small species, somewhat resembling Phlceoplitlior-us frontalis, 

 but usually larger (2 3.5 mm.) ; eyes deeply emarginate in front; 

 pubescence fine, more or less sparse, thorax simply punctured; 

 declivity of elytra more or less tuberculate with first and third 

 intervals elevated, more strongly in male; front coxae separated. 

 (Fig. 136, D.) The species depredate on cedars and allied trees 

 in Europe and this country, a western species attacking even the 

 giant sequoias of California. 



1065 (9171). PHLCEOSINUS DENTATUS Say, 1825, 258; ibid. II, 319. 



Subcylindrical. Head, thorax and under surface piceous; elytra 

 dark reddish-brown, antennae and legs paler. Antennae with 5-jointed 

 funicle. first joint rounded, remaining four joints closely united and 

 gradually broader, club large, oval, obtusely pointed. Head granulate- 

 punctate, front not carinate. Thorax wider than long, apex strongly 

 oblique, the prosternum being only one-half as wide as pronotum, disc 



