i^rs.] 127 



DESCRIPTIONS OF THREE NEW SPECIES OF TENTHREDINIDJS 

 FROM SCOTLAND. 



BY P. CAMEEOK, JUN. 



Nematus Caddekensis, sp. n. 



N. hreviusculns, nitidus, hifciis, antennis articuUs 2 primis, macnlis 

 2 vel 3 mesonoti, ahdomineqice dor so fere toto nigris ; coxis, trochanteri- 

 biis, tibiis^ue pallidis, tarsis posticisfuscis ; aJis ampUs, hyalinis, stiff- 

 mate testaceo. $ . Long, fere 4 lin. 



? . Antennse a little longer than the abdomen, liitcous, the two basal joints 

 black ; the 3rd, 4th, and 5th joints almost equal in length, the remaining joints 

 shorter. Head bright luteous ; the ocelli brownish ; the labruni and elypeus whitish- 

 yellow ; the antenna; at the base surrounded with black. Thorax bright luteous, 

 shining, finely punctured ; the pronotum slightly paler than the mesothorax ; two 

 (often three) black longitudinal stripes are on the mesonotum: the large white 

 cenchri are surroundeel with black. Abdomen short, tliick, and broad, of a like 

 colour to the thorax, the upper surface from the base to the commencement of 2nd 

 last segment black ; the cerci are very short, hairy, and of a pale yellow colour, the 

 anal segment also hairy ; the triangular incised part at the base of the abdomen pale 

 yellow. The sheaths of the saw are faintly marked with black. Feet pale luteous ; 

 the C0X8B, trochanters, and tibia; whitish-yellow ; the posterior tarsi with the apex of 

 the posterior tibiae pale fuscous ; claws toothed. Wings longer than the body, hya- 

 line, iridescent, with a decided fuscous-yellowish tinge ; the costa and stigma testa- 

 ceous, nervures black ; the 2nd recurrent nerve is received a little in front of the 

 sub-marginal one. The entire body is covered with a close wliitish down. 



The c? has the antenna; entirely black, sometimes faintly fuscous at the base, 

 shorter and thicker than in the ? , and tapering considerably towards the apex. The 

 head (mouth excepted), mcso- and meta-thorax, and abdomen above, black. The wings 

 are shorter in proportion to the body than in the ? . In some specimens, the eyes 

 are surrounded with luteous. 



Lakva. — Head smaller than the 2nd segment, the colour intensely black, and 

 the surface covered with a slight microscopic down, and somewhat punctured ; the 

 sides of the mouth slightly greenish. Feet glassy greenish-white, with black claws, 

 the claspers light green. The body above is of a beautifid dark sca-gi-ecn colour, and 

 the lower half of the sides is whitish. On the sides, are ten largo oval orange spots, 

 each divided by the folds of the skin into two parts, which are however closely con- 

 tinuous. Below the orange marks, is a row of roimdish irregular dots, and below 

 these again, and directly over the feet, is a row of oblong longish black spots. Over 

 the orange spots, is a line of close continuous black dots, of irregular shape, but 

 somewhat oval. These marks proceed from tlie 2nd to the 12th segment. On the 

 back at the termination of the segments, are two rather small roundish black dots. 

 Directly over tlie anal segment is a large black spot, much larger than any of the 

 other marks, ajid the last segment is also beset witli a few longish hairs. The ccrci 

 are black, white at the base. The lower part of the body is white. In shape the 

 larva is identical with that of N. melanocephalus, and the length is about li inch. 



The pupa is green. 



