GONEPTERYX. 



439 



Genus GONEPTERYX. 



Gonepteryx, Leach, Ecliiib. Euc. ix. p. 128 (1810) ; Doublcday, Gen. Diurii. Lep. i. }). (i!) 

 (1847). 



Rhodocera, Boisd. Lec. Lep. Amer. Sept. p. 70 (1833) ; Sp. Gen. i. p. 597 0836). 

 " Hkad broad, densely clothed with erect hairs. 

 " Ei/cs round, rather prominent. 



" Labial palpi longer than the head, clothed with short scales. The first joint curved, com- 

 pressed internally ; second joint at least half as long as the first, subcylindric, tapering, or 

 elongate- oval, compressed internally; third joint minute, rounded or oval, placed a little 

 below the apex of the second. 



" Antennce short, stout, mostly channelled below, gradually thickened towards the apex, wliich 

 is truncate. 



" Thorax stout, clothed with fiue hair. 



Anterior wings subtriangular, mostly falcate at the apex; the costa much curved near the 

 base. The costal nervure stout ; subcostal four-branched ; its first nervule throw)i off 

 about the middle of the cell, the second just before the end of the cell, the third about 

 midway between the end of the cell and the apex of the wing. First discoidal nervule 

 united to the subcostal for some distance beyond the cell, middle disco-cellular less than 

 half the length of the lower. 8ubmedian nervure curved downwards near the base. 

 Internal nervure short, running into the submedian. 



Posterior wings mostly angular, sometimes obovate. Precostal nervule simple, mostlj' merely 

 rudimentary. Discoidal nervure appearing to be a third subcostal nei-vnle. Abdominal 

 channel very distinct and ample. 

 " Legs rather short. Claws deeply bifid. Paronychia about as long as the claws. Pulvillus 

 sometimes wanting. 



"Abdomen rather stout, not so long as the abdominal margin of the posterior wings. 



" Larva tapering considerably at both extremities, thinly covered with fine hair ; the back and 

 sides shagreened. 



" Piqm very pointed at both extremities ; thoracic segments swollen." {Douhleda >/ , /. c.) 



Gonepteryx rhamni. (Plate XXXV. fig. 4, var.) 



Papilio rhamni, Linnaeus, Syst. Nat. i. 2, p. 70;') (1767). 

 Rhodocera rhamni, Boisduval, Sp. Gen. i. p. 602, pi. vi. fig. 7 (1836). 

 Gonepteryx rhamni, Lang, Butt. Eur. p. 65, pi. xiv. fig. -i (1884). 

 Rhodocera amintha, Blanchard, Compt. Rend. 1871, p. 810, note. 

 Goneptei'yx maxima, Bni\cv , Ann. & Mag. Nat. Hist. (5) xv. p. 407 (1885). 

 Rhodocera maxima, Pryer, Rhop. Nilion. p. 7, pi. ii. fig. 5 (1886). 

 Gonepteryx rhamni, vai\ amurensis, Graeser, Berl. ent. Zeit. 1888, p. 69. 



" Expands from 2*25 to 2-50 inch. The male has all the wings with a sharply projecting angle 

 and of a bright greenish-yellow colour, with an orange discoidal spot on each wing. I'nder- 



