JOURNAL, OF ENTOMOLOGY AND ZOOLOGY J,\ 



ERIOCEBA LONGICORNIS Walker 

 1848 Jiiisouiciri lonijicorms A¥:ilker; List Dipt. Brit. Mus. : 

 vol. I, ]). 82. 



lieiigtli, not fully extouded, 13-1.'?. 5 iiitii.; (liaiiiotci-. '_' intii.; at 

 snbterminal swelling, 2.4 mm. 



Color of larva light yellowish; almost miiformly cyliiulrical ; 

 the prothorax a little shorter than the other two thoracic seg- 

 ments ; first abdominal segment simple, a little shorter than the 

 motathorax; remaining abdominal segments with a faint basal 

 constriction, dividing the segment into two annulets; remaining 

 seginents gradually increasing in length toward the end ; the 

 tenth segment is capable of being enormously distended; the 

 last segment is narrowed, tapering to an obtuse point; this 

 se.gment is clothed with numerous api)ressed hairs and two 

 or three long, delicate hairs on the side of the segment. 



Head-capsule long and narrow, measuring 1.5 by .275 mm. 

 On the antero-dorsal i)()ition of the head-capsule are the two 

 genal plates (Snodgrass tei'minology), these ratlicr hroail. 

 separated from one another along the dorsal nicdiati line li\ a 

 wide space; the cei)halic inner angles produced entad into 

 pi-ominent lobes (plate T, E), the caudal margin of the plates 

 produced caudad in a fringe-like comb of chitinized points; 

 tliese genal plates (which i^resumably include the vertex and 

 gena?) are only about two-fifths the length of the head-capsule. 

 Ceplinlad of the genal plates is a rounded median lobe (fi-dus 

 and clypcus) liearing at its apex a few small tubercles and a 

 su'all quadrate projection (labrum) ; the lateral margins of this 

 sclerite are gently rounded, not produced cephalad into i)romi- 

 iKMit lobes. This plate consists of the fused frons, clypeus and 

 labiinii. I^alcrad of the genal plate is an elongate chitinized 

 piece articulated with the base of the mandible on its dorso- 

 lateral aspect, fused or closely applied to the genal plates for 

 iiiost of tlie length of the latter, thence articulated end-to-end 

 with another elongated bar of chitin which extends caudad. 

 expanding out at its tij* and becoming approximated with its 



