120 PIMPLINE ICHNEUMONIDAE 



is the median ceU. Between the outer parts of the marginal and 

 cubital nervures, external to the transverse cubital nervure is 

 the submarginal or cubital cell. Behind this, between the 

 cubital and discoidal nervures lies the first discoidal cell. Be- 

 tween the externo-medial and anal nervures and extending from 

 the base of the wing to the transverse medial nervure, lies the 

 submedian cell, external to which and separated from it by the 

 transverse medial nervure lies the second discoidal cell. The 

 area behind the anal nervure is known as the anal cell. 



Legs 



The legs are long and slender, the coxa being the stoutest 

 part of each leg. The coxae, trochanters, femora and tibiae, 

 which are clothed with minute hairs or spines, are sometimes 

 almost pubescent. At the outer end of each tibia are two long 

 spines of unequal length, on the sides towards the body. The 

 tarsi are covered with short spines becoming longer at the end 

 of each segment. 



On the fore legs, the coxae are large, but are the shortest ones 

 of the three sets. Each is sub-conical in form, with the tro- 

 chanter articulating at its apex. The trochanter is well devel- 

 oped and composed of two segments, the first being the larger. 

 Its base is cylindrical, but at the tip of the second section where 

 it articulates with the femur it is flattened. 



The fore femur is the shortest of any. At its articulation with 

 the trochanter, it is flattened and for a short distance it decreases 

 in width. It then begins to widen and thicken, becoming sub- 

 cylindrical just before articulating with the tibia. 



The fore tibia is the only one which is shorter than its femur. 

 It is narrow and cylindrical at its base of articulation, but 

 gradually increases in size to its outer end. Its outer side is 

 clothed with short spines. 



The tarsus is composed of five segments, all of which are 

 cylindrical and slightly enlarged at their outer ends. They 

 decrease in length from the tibia outward to the fifth segment 

 which is slightly longer than the fourth. On that portion of 

 the tarsus overlapped by the tibial spurs is a raised area, which 

 together with the latter, forms a cleaning apparatus. The 

 longest spines of the tarsus are found at the tip of the fourth 



