ICHNEUMONID FINAL INSTAR LARVAE SHORT 449 



Tribe Platylabini 



Figure 29 



Platylabus darus (Cresson) was examined. 



The pair of lightly sclerotized plates situated on the clypeolabral 

 region above the setae and sensilla distinguish this ichneumonine 

 from all others examined except Pseudamhlyteles. In Pseudambly teles 

 there is no line of setae beneath and following the curve of each 

 sclerotized plate as in Platylabus. 



Tribe Listrodromini 



Figure 30 



Members of this tribe prefer Lycaenidae as hosts. 

 The broad mandibles with their very short blades are distinctive. 



Larval Key 



L Each maxillary and labial palp with three sensilla, the middle one raised as a 



projection Anisobas 



Each maxillary and labial palp with five sensilla, but none raised as a pro- 

 jection Listrodromus 



Figure 29. — Ichneumoninae:Platylabini, head sclerites: Platylabus clarus (Cresson) 

 (Antenna not visible on preparation; 2, spiracle; 3, skin.) 



