662 NEW YORK STATE MUSEUM 



may be readily distinguished from otlier pupae of the genus, by the 

 short antennae not extending to hinder edge of the metathorax, and 

 the component segments being much shorter than in other species. 

 The two raised, longitudinal lines of the wing covers corresponding to 

 those of the beetle are very characteristic. The end of the abdomen is 

 square and terminates in two sharp, slender, incurved hooks which are dark 

 red at the tip. 



The adult is a rather stouth, blackish or very dark brown beetle from 

 Yz to ^/^ inch in length. The short antennae do not extend to the hind 

 edge of the metathorax, the prothorax is short with rounded sides, and the 

 elytra are marked by two conspicuous ridges. 



Food plants. Dr Hopkins states that this species works at the base of 

 dying pine and spruce trees, hastening their death and decay. Mr Beuten- 

 muller records this species as occurring upon oak and grapevine as well as 

 pine, spruce and other conifers. 



Distribution. W'e have taken this beetle at Nassau and Troy N. Y., 



and it has been reported from Buffalo N. Y., Cincinnati O., southwestern 



Pennsylvania, District of Columbia, and Dr Smith states that the beetles 



occur throughout New Jersey, during May and June, and that the larvae 



may be found in pine. 



Bibliography 



1890 Packard, A. S. U. S. Ent. Com. 5th Rep't, p. 697-99 



Acanthocinus obsoletus Oliv. 



A grayish brown, mottled beetle s 16 to ]i inch long, occurs on white pine. 



The female of this species is remarkable because her long ovipositor 

 extends about 3/^ inch beyond the tip of the abdomen. The delicate 

 antennae are longer than the body, ringed with dull, yellowish white and 

 the winor covers are marked with obscure, oblique, darker areas. It occurs 

 in small numbers during July and August on white pine. This species has a 

 wide distribution in the northern Atlantic region, according to Dr LeConte. 



