(>G2 FAMILY IV. SCOLYTIDJE. 



Steuben Co., Ind. ; June 15. Scotia Junction, Out., July 22. 

 (Wenzel.) Tyjie from. Lat. G5. Ranges from Canada and 

 Maine to Alaska, south to Georgia and Louisiana; common iu 

 the northern and Appalachian spruce region. In West Virginia 

 adults occur from March to November; mining under green bark 

 on logs, tops, stum] is, broken branches, living, injured and dying 

 spruce. Excavates three or four short, curved egg galleries from 

 a large central chamber in the surface of the inner bark, through 

 the bark and slightly grooving the wood of black, red and white 

 spruce, and rare in balsam fir. (Hojil-his.} By far the com- 

 monest secondary enemy of spruce in West Virginia and exceed- 

 ingly common in Maine, its habit of infesting the tops of trees 

 immediately after the middle portion of the trunk has been at- 

 tacked by Dentl rod onus piccaj>cr<1<i makes it one of the most 

 efficient allies of the primary enemy. 



P. nigriceps Kirby, said by LeConte to be synonymous with rufipennis, 

 was described from Lat. 65 as smaller (2 mm.), rufous, head black, with 

 elytral rows of punctures less conspicuous. Kirby's figure of rufipennis 

 shows plainly the "rows of larger punctures" he described, and contradicts 

 LeConte's description of the elytra as "scarcely striate." 



1071 (9158). POLYGRAPHUS BREVicoRNis Kirby, 1837, 194. 



Described as Apate (Lepisomus) and doubtfully referred to Polygrapnus 

 by LeConte; differs, if a Polygraplius, by the shorter antennae with smaller 

 club. Kirby's description reads: "Body black, covered with hoary hairs, 

 above resembling scales; antennae very short with a small knob, rufous; 

 front without a tubercle, nose not impressed; elytra not striated; this 

 species seems to indicate another section of the genus," meaning Lepisomus, 

 which he created for rufipennis. 



Locality, Hudson Bay Territory. Lat. 65. 



Tribe VII. HYLESININI. 



Pronotum with anterior dorsal area commonly smooth; head 

 exposed, not concealed from above; antennal club usually conical, 

 rarely compressed; tarsi with third joint bilobed. (Fig. 139, G.) 



KEY TO GENERA OF HYLESININI. 



a. Funicle of antennae G-jointed. TOMICUS.* 



aa. Funicle of antenna? 7-jointed. 



b. Antennal club elongate-oval, pointed, slightly compressed. 



I. HYLESINUS. 



*Tomicus pinificrda Linn. (1758, 563), a common European insect called "Wald- 

 gartner," is credited to North America by Hagedorn (1910) under Myclophilus. Le- 

 Conte (1876) mentions (under genus Blastophagtis) the accidental introduction of this 

 species, erroneously described by him in 1868 as Hylitrgits aiialogiis, and compared it 

 with the European H. ligniperda on the basis of an erroneously identified specimen. 

 Headlee has recently called attention to its occurrence in Scotch fir standing in a 

 nursery in New Jersey and figures its work in the terminal twigs, but it does not appear 

 to be established in the United States. 



