38 MEMOIRS NATIONAL ACADEMY OF SCIENCES. vol. xii, 



ACANTHOCAMPA BELINA (Westwood). 



Plate XXXII, figs. 6, 7; CVI, figs. d-g. 



Saturnia belina Westwood, Proc. Zool. Soc. London, 1849, p. 41, PI. VIII, fig. 2. 



Anthcraea belina Walker, Cat. Lep. Het. Br. Mus., V, p. 1241, 1855. 



Antheraea belina Kirby, Syn. Cat. Lep. Het., I, p. 758, 1892. 



Nudaurelia belina Rothschild, Novitates [Zoologicse]. 



Nudaurelia belina Sonthonnax, Annalea Lab. d'Etudes Soie, X, p. 24, PI. IX, fig. 2, $ , 3, J 1901. 



Antheraea huebneri Kirby, Trans. Ent. Soc. London, 1877, p. 20. 



[A. belina is the type of the genus.] 



Imago. — -One $ , one 9 . Body and wings uniformly rather light grayish fawn. Head 

 and thorax concolorous, but the basal half of the abdomen is of a pinkish tinge. Collar broadly 

 edged with white. 



Fore wings of the same outline as in tyrrhaea, but with quite different markings; basal 

 line broad, white, on the inside lined with brown, and situated a little nearer the discal spot 

 than the base of the wing; it is somewhat curved, with two faint scallops, one in the discal 

 space, the other on vein IV, the scallops more marked in S than 9 . Extradiscal line white, 

 like the basal, brown externally, slightly sinuous, but not scalloped, and ending on the outer 

 fourth of the costa. Ocellus of fore wing an elongated half circle, like a solid D, the inner side 

 of the mark straight, the outside well rounded, less than half as large as the ocellus of tyrrhaea, 

 more elongated in 9 than c? , a central clear half round space, edged with reddish brown and 

 black brown, with an outer circle of whitish gray. 



Hind wings with a broad diffuse whitish basal line, and a large ocellus, the center of 

 which is small, clear, surrounded by a broad soft brown fawn (almost brown pink) ring, a 

 narrower dark brown ring, and a wide pale grayish-white ring. Extradiscal line broad, whitish 

 and brown, curved outward opposite the ocellus which it nearly touches. Base of wing and 

 costal edge pink, the pink shade extending to the extradiscal line. 



Under side of the wings; the ocellus of the fore wing is as above, small, but without the 

 outer white line in the S , though it is present ( ?) in the 9 ■ Hind wings with no ocellus except 

 the clear space, of the same size as above. No basal line, but the extradiscal line is common 

 to both wings. 



Expanse of the fore wings, <? 108 mm.; 9 100 mm. 



Length of fore wing, S 54 mm.; 9 52 mm. 



Breadth of fore wing, c? 30 mm.; 9 28 mm. 



Length of hind wings, 3 39 mm.; 9 35 mm. 



Breadth of hind wings, 3 30 mm.; 9 29 mm. 



Ocellus of c? fore wings, 5 by 5 mm.; hind wings, 15 by 13 \ mm. 



Ocellus of 9 fore wings, 5 by 4 mm.; hind wings, 11 by 10 mm. 



Genitalia: Suranal plate spine-like, long acute, compressed, subcultiform, reaching nearly 

 to the end of the claspers; these are stout, seen sidewise, triangular; seen from above or beneath, 

 rather narrow and moderately curved. Penis forms a cylindrical subacute style-like process. 



Geographical distribution. — "Port Natal and Zoom" (Westwood); not rare at Pretoria 

 during October and November (Distant), Natal (Doll). Durban, October 29, 1901, bred 

 (Queckett) . 



Rothschild has stated that A. huebneri Kirby is a synonym of this species, and comparison 

 with his description enables me to verify his statement. 



Larva. — Length 82 mm., width of head 7 mm., the head being about half as wide as the 

 pro thoracic segment; it is rounded, of the same shape and with the same kind of fine micro- 

 scopic granulations as in Nudaurelia. Prothoracic plate with the surface rugose, with scattered 

 long fine hairs, but none on the front edge, and no vestigial median tubercles; on each side of the 

 segment on the front edge and in front of the spiracle is a moderately large tubercle with five 

 or six scattered setiferous warts; over the base of each thoracic leg is a conical tubercle. Below, 

 above, and in front of the tubercles are numerous pearly fungoid warts, three or four of these 

 directly beneath the spiracle being bright red, as is a similar group on the two other thoracic 

 segments. 



