NEMATUS H^EMORRHOIDALIS. 97 



Nematus licemorrlioidalis, Spin., Ins. Lig., ii, 20; Lop., Mon. 



65, 194 ; Ste., 111., vii, 35 (his types 

 are caprea, Pz.). 



variabilis, Tischbein, Stett. Ent. Zeits., 1846, 80. 



squalidus, Evers., Bull. Mosc., xx, 21. 



incanus, Foerster, Verb. Yer. Rhein., xi, 302, pi. v. 



f. 18 (wing). 



Reddish, elongate ; the mesonotum and pleurae semi-opaque, punc- 

 tured, breast shining; the vertex, two marks on the mesonotum, 

 metanotum, and abdomen on the back (apex excepted), black ; the 

 face, legs, abdomen beneath and at the apex above, livid white ; the 

 femora more or less lined with black ; posterior tarsi black. The cerci 

 are moderately long; sheath long, pilose, black at apex. Antenna 

 about the length of the abdomen, black, tapering slightly towards the 

 apex. Wings hyaline, the costa and stigma livid white. The pronotum 

 and tegulse livid. 



$ black, mouth, tcgula?, a thin line on the pronotum and the apex 

 of abdomen beneath, white, varying to fuscous. 



Length 2f 3 lines. 



Easily known from the preceding species by the 

 livid colour of the pronotum, tegulae, legs, abdomen, 

 and stigma. The sheath is only black at the extreme 

 tip, and is not so broad ; the clypeus is slightly emar- 

 ginated, the calcaria short ; the third antennal joint is 

 nearly equal in length to the fourth, the second recur- 

 rent nervure is received considerably in front of the 

 second transverse cubital ; the f ovea between the an- 

 tennas is very deep, vertex punctured, and the palpi 

 pale white. When alive the ground colour of the 

 abdomen, &c., is greenish. 



1 have only seen two aberrations. 



Ah. a. Mesonotum with three black marks, some- 

 times almost confluent ; the metanotum, basal half of 

 scutellum, sternum, a small mark on pleurae, and occa- 

 sionally a thin line on the femora, black. 



b. As in a, but the black on the femora more dis- 

 tinct, and no black marks on pleurae and breast. 



The type varies a little in having the abdominal seg- 

 ments pale at their junction, and the three or four 

 apical ones without any black. This is especially 

 noticeable in bred specimens. The aberrations a and 

 I occur together. 



Larva. Head glassy green, dotted at the top with 



VOL. II. 7 



