CLADIUS PECTINICORNIS. 27 



1. CLADIUS PECTINICORNIS. 



Vol. I, PL XY, fig. 1, a ; 2 ? . Vol. II, PI. YIII, fig. 

 1,1 a, Larva; PL XI Y, fig. 4, Saw. 



Tenthredo pectinicornis, Fourc., E. P., ii, 374, 33. 

 di/ormis, Pz., F. G., Heft 62, pi. 10. 



Lophyrua di/ormis, Spin., Ins. Lig., ii, 153 ; Fall., Acta, 1808 



41,5, 6; Mon., 18, 9. 



Cladius diffortnis, Lep., Mon., 58, 165 ; F. Fr., pi. 12, f. 4 ; 



Brulle, Ann. Soc. Ent. Fr., i, 308, 

 pi. xi, f. 1012 (lar.); Dbm, Prod., 

 100, 35, PL 2, f. 8185 ; Ste , 111., 

 vii, 23, 1 ; Htg., Blattw., 175, 1, 

 t. ii, f. 20; Thorns., Hym, So., i, 

 71, 1 ; Toll., Tijd. Ent., iii, 202, 

 205, pi. 9 ; Ent., No. 139, 2629 ; 

 Kalt., Pfl., 222 ; Brischke,Besclir., 

 10, t. ii, f. 3 (lar.) ; Cam., Proc. 

 N. H. S. Glas., iii, 19, 1 ; Fauna, 

 28, 1; Br. and Zad., Beob. ii. 

 Blattw. (2), 30, 12, Taf . 1, f. 8. 



Cladius Geo/royi, Lep., Mon., 58, 166. 



pectinicornis, Costa, F. N., Tenthr., 2, pi. Ixiii, f. 1 

 (Antenna) ; Andre, Species, i, 80 ; 

 Cat., 9,* 2. 



Black, shining, covered with scattered grey pubescence; knees, 

 tibiae, and tarsi yellowish-white, last two or three joints of tarsi (espe- 

 cially the posterior) fuscous. Cerci long ; epistoma slightly convex. 

 Wings faintly smoky, the apex clearer, nervures at base and costa 

 fuscous or pale-reddish, at apex blackish, stigma obscure black, tegulae 

 grey or white. $ smaller and narrower than $ and easily distinguished 

 by the antennae. 



Length 4 5 lines. 



Beyond slight colour aberrations, I have not noted 

 any varieties of this species in Britain. Hartig de- 

 scribes a small form (named by him lacteus) which 

 had the sheaths of the saw and the last abdominal 

 segment milk-white ; while the G. Geoffroyi is distin- 

 guished by having the prolongation of the third 

 antennal joint milk-white. Both aberrations are owing 

 no doubt to the immaturity of the specimens. 



The larva lives on the underside of the leaves of 

 various roses, both cultivated and wild, in which it 

 devours irregular holes ; occasionally the leaves are 

 eaten along the edges. The midrib is never touched, 



