392 



NEW YORK STATE MUSEUM 



bark of cellar, r h u j a o c c i cl c n I a 1 i s. He states that Mr Knaus con- 

 sitlered this liorcr \rry destructive to junipers and arhor \itae in that State. 

 It was first noticeil at Sahna Kan., in the summer and fall of 1884, attack- 

 ing" the junipers on the ^n'ouuils ot many residents of that cit\'. The 

 beetles were present in great numbers and many trees were entirely 

 destroyed and others liadly injured. The damage was almost invariably 

 confined to th<.' base of th(; lateral otfshoots of tlie branches, the beetles 

 burrowing under the l)ark ancj eatuig around the base ot the twig causing 

 its destruction. This attack, as characterized by Mr Knaus, is different 

 from an\lliing obserxcd l)\- th(_- writer, unh.-ss the Imrrows passing aroimd 

 the twig are th(.- work ot larvae rather than adults 



Description. The beetle varies in color trom a light brown to black, is 

 a ver)' little over '/ii. inch long and relatively stout. The mouth parts 



ajjically and the e)cs are black. The latter are 

 coarsely granulated, transversely elongated and 

 parth" di\'ided near their nudtlle. The prothorax 

 is rather coarseh' and lhickl_\- inmctiu-ed and tapers 

 very much anterior!}'. The wing co\'ers or eh"tra 

 are marginetl anteriorly, deei)ly striate and thickly 

 clothed with short, )ellowish hairs. Certain structural 

 details of the antennae are shown on jjlate 67, figure 

 7 and that of the mitldle and posterior tibiae in figure 90. 



A ]>upa ne;ud)' ready to assume the adult form is yellowish white, about 

 the length of th(j beetle and stouter. The e)'es are bi'own antl the mouth 

 parts almost Idack. Vour of the abtlouiinal segments project be}'ond the 

 A\ing jiads. 



The t\pical Inu'row I fig. 91, 92, and pi. 63, fig. 4] has a very charac- 

 teristic form. There runs from the three lobeil [primary or nuptial chamber 

 nearly parallel with the wood tdjers a l:)roail burrow alxiut 3^_ inch long. 

 Hggs are laid in minute notches on both sides ot the parental channel and 

 the young work for a short distance at nearly right angles and then they 

 are apt to oblique in either direction. The larval liurrows score the sap- 



Fig. c;o Middle til)i;if : (i = T u tii i- 

 c 11 s b a 1 s a 111 e 11 s ; /' I', h 1 <• e "- 

 sinus (i e n t a t II s ; < I'ustenur 

 liliia of latter (oriyiii.il) 



