200 ENTOMOLOGICAL SOCIETY 



ON THE GENERA OF THE CLEONYMID^E. 

 By WILLIAM H. ASHMEAD. 



The Cleonymidce were first separated as a family by Francis 

 Walker, in 1837? kilt ne did not properly define the family or 

 really appreciate the structural characters that separate it from 

 allied groups, since of the ten genera recognized by him as be 

 longing to it, he included no less than five genera which belong 

 to the Encyrtidas (Eupelminae and Encyrtinaa) , and one of these, 

 Macroneura Walker, was based upon a male Eupelmus. 



Still later, or in 1856, Dr. Arnold Forster recognized this 

 family under the name Cleonymoidce and defines five new genera, 

 viz., Tricoryphus, Heydenia, Plutothrix, and Tetracampe. 



Forster correctly excluded from the family Stenocera Walker, 

 Calosoter Walker, and Ericydnus Haliday, but included three 

 other genera not included by Walker, namely, Trigonoderus 

 Westw., Platynocheilus W'estw., and Merostenus Walk. 



Tricoryphus Forster is, as I have already shown, the wingless 

 female of Cerocephalus Westw., and it, as well as Plutothrix, 

 Tetracampe, and Platynocheilus, does not belong to the family, 

 the first named belonging to the S-palangiina, the others to the 

 Entedonidfe. 



The family Cleonymidce, as now restricted, may be readily 

 distinguished by the large triangular mesepisternum, by having 

 either the anterior or posterior femora much swollen and some 

 times toothed, or both are swollen, with the hind femora dentate 

 or toothed beneath ; if the legs are slender, the hind pair are 

 very long, their coxae long, cylindrical, while the radius in the 

 front wing is very short and the postmarginal is very long, ex 

 tending to the apex of w r ing (Pelecinelld}. 



The family comes very close to the Encyrtidce, and especially 

 to the subfamily Eupelmince, but the species may always be dis 

 tinguished from any in this family by the absence of a movable or 

 saltatorial middle tibial spur, the impressed mesopleura, the non- 

 impressed mesonotum, and usually by the much longer marginal 

 vein. 



I have recognized four subfamilies, but one of these, the Colo- 

 trechnince, is, how r ever, provisional or supposititious, since it is 

 based upon Thomson's genus Colotrechnus, which is unknown 

 ,to me, and may or may not belong here. 



The following tables will aid the student in recognizing the 

 subfamilies and genera : 



