30 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



RECORD OF THE REARING OF GUPES GONCOLOR WESTW. 



(Goleoptera.) 



By THOMAS E. SNYDER, Bureau of Entomology. 



The position of the family Cupesidse in the classification of 

 Coleoptera has long been of interest to the systematist. So far 

 as is known there are but meagre descriptions of the habits of 

 these beetles and no figures of the larvse exist. The larvae of 

 C. concolor are wood-borers, excavating longitudinal burrows in 

 solid but decaying chestnut and oak wood; the burrows are packed 

 with fine, digested boring dust. The pupal cells are cylindrical 

 with rounded ends. Larvse were first taken from the solid but 

 decaying wood of the butt of a chestnut telegraph pole near 

 Boykins, Virginia, on August 9, 1910, but remained unidentified. 

 The pole had been broken off during a storm and reset sometime 

 previous and the butt was lying on the ground. On May 1, 1912, 

 numerous larvae were found in the wood of a solid but decaying 

 oak log lying in the woods near East Falls Church, Virginia. 

 Some larvae were in the prepupal stage. On May 22, one larva 

 was found to have pupated since the preceding day. The pupa 

 had transformed to a living adult sometime before June 6 on 

 which date the adult was mature and another larva was found 

 to have pupated. A third larva pupated on June 20 (since June 

 19). On September 17, 1912, similar larva? were found in the 

 decaying wood of a black oak stump near Elkmont, Tennessee, 

 in the outer layers of wood but have not yet transformed. Bur- 

 rows of the larvse have been found in old, oak trestle timbers. 



The larva figured is 23.5 mm. in length, white, elongate and sub-cylin- 

 drical. Body gradually broadening from the sixth to the eighth abdominal 

 segment, ninth abdominal segment conical, with numerous long hairs on 

 sides, armed with more heavily chitenized sharp tubercles, being produced 

 to a narrow, heavily chitenized, cylindrical anal process; anal process 

 widening at apex, tip concave. Pleural ridge on all abdominal segments. 

 Prothorax prominent, approaching the characteristic dilation of Eupsalis 

 and Lymexilonid larvae, broader than head and other thoracic segments. 

 Prosternum broad, flat, armed with numerous chitenized asperities. Legs 

 5-jointed excluding claw; first joint large, flattened, fleshy lobe. Labium 

 with hairs on anterior portion. Antennae 4-jointed. Maxillae with all 

 three parts distinct; lacinia thick and fleshy, with long hairs pointing 

 inward on anterior portion, palpi 3-jointed; galea 2-jointed. Labium black, 

 chitenous, chisel-edged emarginate, with 2-jointed palpi. Mandible black, 

 chitenous with large, blunt basal tooth and 3 other teeth. 



Pupa figured is 11.5 mm. in length, white, body somewhat flattened, 

 abdominal segments gradually broadening; anal segment widest, conical; 



