68 ENTOMOLOGICAL NEWS [March, '20 



along the canal at Uhferstown, Pennsylvania, on June n. 

 Several larvae and pupae and one adult were taken from the 

 fungus at this time and several days later another adult em- 

 erged. The feeding appeared to have taken place entirely in 

 the contex of the fungus and it was here that the pupal cells 

 were found. According to Overholts (Polyporaceae of Middle 

 Western U. S., Wash, Univ. Studies, vol. Ill, Part I, No. i) 

 Lenzites saepiaria occurs on the dead wood of coniferous 

 (rarely deciduous) trees. 



Very little appears to be known concerning the larval habits 

 of Mordellids. Some live in old wood and others have been 

 found in the stems of plants. Coquillett found larvae of Mor- 

 della pustulata in plant stems under circumstances that render 

 it highly probable that they were feeding on a Lepidopterous 

 larva contained in the stems. In view of the fact that num- 

 erous species of fungi have been examined in the past and no 

 Mordellids found it is extremely probable that the fungus 

 habit in this instance was accidental. 



Full Grown Larva. Length 4 to 5 mm. Width 1.6 mm. Body white, 

 mouth parts dark; somewhat grub-like, convex above, flattened beneath, 

 skin wrinkled; sparsely hairy, hairs short; segmentation distinct; legs 

 short, weak, subcylindrical, appearing as nipple-like protuberances on 

 enlarged subglobular bases; last abdominal segment subconical, terminated 

 by a short subcylindrical chitinous style with four somewhat weak points 

 formed by the depressed end; anal segment supplied with minute chitinous 

 spines which are more numerous and larger at its distal end close to the 

 style; anal segment bears more hairs than other body segments. 



Pupa. Length 5 mm. Width 1.6 mm. White, sparsely hairy, rounded 

 anteriorly, tapering slightly to penultimate abdominal segment; ultimate 

 segment tapering abruptly to rounded end; posterior end of body termi- 

 nated by two somewhat transverse leg-like appendages, each with a sharp 

 chitinized tip; head, thorax, wing cases and sides of abdominal segments 

 supplied with minute spines. 



Adult. Mordella marginata. This was described by Melsheimer in 

 1845 (Proc. Phil. Acad. Nat. Sci. II, 312). Blatchley, in his Coleoptera of 

 Indiana, states that it occurs throughout Indiana especially on the flowers 

 of dogwood, Jersey tea and wild hydrangea. 



