THE SCALE INSECT GENUS ASTEROLECANIUM 173 



\bdomen : Three segments with a seta dorsally on lateral margin on 1 side of 

 body and 2 segments: with a seta on the other side ; 4 segments with a seta in 

 ventral snbmedian area on 1 half of body, and 3 segments with a seta on the 

 other half; lobes indicated, each with 1 long and 3 short setae, and with o setae 

 between lobe and median line on 1 half of body and 2 on the other half ; penis 

 sheath with 4 setae dorsally near base, 5 long setae ventrally near base on 1 half 

 and 4 on the other, 9 smaller setae on each side of ventral opening, and 

 several minute clear areas at tip. 



Male nymph.— Distinguishing characters similar to those of adult male. 



Third-sta</<> male— Similar to second stage but more nearly elliptical; dorsal 

 surface with 8-shaped pores slightly more numerous than in second stage ; ventral 

 surface with legs represented by 3 pairs of circular sclerotized areas, each with 

 a short, stout, straight claw, and 4-8 clear areas (possibly setal bases) ; apex of 

 abdomen as in second stage. 



Data.— Described from specimens (eight females, one second-stage 

 specimen, three larvae, one adult male, one male nymph, and three 

 third-stage males, mounted) from "Tusca" [presumably A cacia monili- 

 formis'], Cordoba, Argentina, M. Kisliuk, June 20, 1927, holotype and 

 para types. 



This species is particularly interesting in three respects, namely, the 

 unusually large size of the submarginal 8-shaped pores as compared 

 with the marginal 8-shaped pores in the adult females, the constancy 

 with which one seta is missing on one half of the apex of the abdomen 

 in all stages, and the presence of four submarginal setae on the penulti- 

 mate segment of the body in the larval stage. 



It is rather similar to viridulum,. 



ASTEROLECANIUM QUERCICOLA (Boiiche) 



(Fig. 58, F-K; pi. 8, G) 



Lecanium quercicola was described by Bouche in 1851 (11, P- 11$) 

 as follows, " 2 fast kreisrund, erhaben, runzlich, dunkelbraun. Lan^e 

 % Linie. Auf Eichen selten." In 1870 (88, pp. 279-280) Signoret 

 redescribed it and transferred it to Asterolecam him . He gave a French 

 translation of Bouche's description, which he followed with this state- 

 ment: "Telle est la description donnee par Bouche d'un type que Ton 

 trouve sur les chenes et que nous possedons a deux etats, dont Fun se 

 rapporte entierement comme couleur a la description ci-dessus. et 

 1 'autre, d'un jaune pale brillant et transparent, presente a une des 

 extremites une macule d'un brim fonce, qui irest que la depouille 

 repoussee vers ce point.'' However, while Signoret considered 

 Bouche's querck-ola to be a species of Asterolecamum, Sanders, in 1909 

 (84, p. V>1), believed it to be identical with Aspidiotus zonatus 

 Frauenf.. and in 1912 Lindinger (67, p. 371) assigned it doubtfully to 

 Kermes quercus but in 1934 (62, p. 169) listed it as an unknown species. 



The original description certainly is inadequate to differentiate this 

 form from many other scale insects, and the identity of the species 

 cannot be determined because the type specimens presumably are no 

 longer in existence. Bouche's quercicola may belong to Asterolecartium, 

 the specimens treated being either immature or ones in which the 

 adults had not shrivelled in the test, which would account for the 

 dark-brown color. Since there is this possibility, and since Signoret 

 as well as some other writers have adopted this interpretation, it 

 seems best to assume that quercicola is the species treated below. 



