/o 



104. 

 HYLURGUS PINIPERDA. 



Order Coleoptera. Fam. Bostricidas Lat.^ Leach. 



Tijpe of the Genus Dermestes piniperda Linn. 



Hylurgos Lat., Leach. Hylesinus Fab. Bostrichus Fab. Scolytus 

 Oliv., Lat. Ips De G., Mars. Dermestes Linn. 

 Antennic short, clavate, pilose, inserted in a fissure on each side 

 the head, before the eyes, 1 1 -jointed, 1st joint very long, bent, 

 clavate, 2nd globose, 3rd small, cup-shaped, 4 following trans- 

 verse, the last being the broadest, to which is attached an ovate, 

 globular, pubescent club, composed of 4 distinct joints (fig. 6), 

 Labnim minute, emarginate, ciliated (1). 



Mandibles small, trigonate, acute, with 2 teeth on the internal 

 edge (2). 



MaxillcE horny, short, obtuse, armed internally with spinous 

 bristles and pilose externally. Palpi very short, 3-jointed (3). 

 Mentum obovate, hairy. Palpi much longer than the maxillary, 

 slightly pilose, robust, 3-jointed, 1st joint the largest, 3rd the 

 smallest. Lip small, ciliated (4). 

 Head globular, slightly produced anteriorly. Eyes small, elongated. 

 Thorax cylindric-ovate. Abdomen cijlindric. Scutellum indistinct. 

 Wings 2, Tibiae compressed, dilated towards their apex, uncinated 

 internally, and bidentate on the external, edge. Tarsi inserted close 

 to the internal angle of the tibiae, o-jointed, 2 first joints short, 3rd 

 bilobed, 4th very minute, 5th elongate-truncate. Claws simple (o, 

 afore leg). 



Piniperda Linn. Syst. Nat. 2. 562. 9. Fab. Ent. Syst. v. 1. pars 2. 

 p. 367. n. 17. Mars. Ent. Brit. 57. 18. 



Black, shining, slightly pubescent. Head and thorax rather 

 minutely punctured, the former with a short ridge between the 

 antennae, the latter narrowed anteriorly. Elytra a little broader 

 than the thorax, somewhat rugose with 9 minutely punctured 

 striae producing lines of hair, the interstices irregularly punc- 

 tured. Antennae and tarsi ferruginous. 

 Var. b. Elytra rufous. 



d. B. testaceus Fab. Ent. Syst. v. 1. pars 2. p. 367. n. 18. 

 Eyes blackish. Head and thorax dull and pale ferruginous. 

 Elytra, antennae and legs ochraceous. 



In the Author's and other Cabinets. 



We have already given in folio 43 some account of an insect 

 that is very destructive to the Elm, and the present paper re- 

 lates to another beetle of the same family, no less injurious to 

 the young pines (both Pinus sylvestris and P. Strohus) by de- 

 stroying their leading shoots. 



