PHLOEOPHTHORUS. 103 



Phloeophthorus, 



Very similar to Carphohorus pilosus but distinguished 

 (apart from the generic characters) by the much larger and 

 thicker club of antennae, the long, distinct, not scalelike 

 pubescence on tlie longer and narrower thorax, the much 

 broader rows of punctures on the elytra, with longer and 

 stouter bristles on the much narrower interstices. L. 1 1. 

 Rather common, P. rhododactylus, Marsh. 



Hylesinus. 



A, Upper-side black, without hairs or only scantily covered 

 with bristle hairs (at most standing more closely along 

 suture). 



a. Length 2 — 2| lines. 



Black or pitch-brown, the greatest part without hairs. 

 Thorax narrowed in front, somewhat broader than long, 

 closely and rather coarsely punctured ; elytra with deep 

 striae, interstices with sharp prominences placed in rows 

 and with short blackish bristles. Common. 



H. crenatus, Fab, 



J), Length 1 line. 



Black, dull; antennae and legs rust-brown. Thorax 

 narrowed in front, much broader than long, punctured in 

 wrinkles ; elytra with punctured striae, interstices granu- 

 late, scantily covered with yellow, shiny bristles, placed 

 more closely along suture. Not common. 



H. oleiperda, Fab. 



JB, Upper-side closely covered with short scale- or bristle- 

 like hairs. 



a. Elytra without white spot from shoulder to middle 

 of suture. 



Black ; elytra pitch-black or brown, with brown scales* 

 spotted with gray-yellow hairs ; antennae red-brown ; legs 

 (except tarsi) dark. Thorax much broader than long, finely 

 granulate, without central line ; elytra with distinct, fine 

 rows of punctures, interstices with a row of small depres- 

 sions. L. 1| — 1^ 1. Common. H. fraxini, Fab. 



h. Elytra with white spot from shoulder to middle of 

 suture. 



Black ; elytra pitch-black or brown, with brown and 



