224 MEMOIES OF THE NATIO^^AL ACADEMY OF SGlE^sTGES, 
Heterocampa manteo (Doubleday). 
(PI. y,fig. 1 VII, fig. 21 ^.) 
Lochmwus manico Doubleday, Entomologist, p.58, Jau., 1841. 
Harris, Eufe, Corresp., p. 134, 1869. 
Jieterocavipa manteo Walk., Cat. Lep. Het. Brit. Mus., t, p. 1024, 1855. 
Tadana cinerascens Walker, Cat., Lep. Het. Br. Mus., t, p. 091, 1855. (Fide Grote and Eob.). 
Heterocampa manieo Morris, Synopsis Eep. N. Aiuer., p. 240, 1862. 
Heterocampa suhalhicans Grote, Proc. Ent, Soc. Phil., iii, p. 336, Dec., 1863, pi. 8, fig. 2 (a good figure); New 
Check List N. Amer. Moths, p. 19, 1882. 
Packard, Fifth Rep. U. S. Ent. Comm,, p. 158, 1890. 
Smith, List Lep. Bor. Amer., p. 31, 1891. 
Kirby, Syn. Cat. Lep. Het. Br., i, p. 564, 1892. 
Heterocampa manteo Neum. and Dyar, Trans. Amer. Ent. Soo., xxi, p. 206, 1894; Journ. N. Y. Ent. Soc., ii, 
p. 117, Sept., 1894. 
Larva. 
(PL XXIX, figs. 2-10.) 
Doiibleday, Entomologist, p. 58, Jau., 1841. (Ilncolored figure of mature larva, plate facing p. 60, fig. 6; 
pupa, fig. 7.) 
Comstock ((f. 7F.), Rep. JJ. S. Dept. Agr. for 1880, pp. 259, 260, 1881. 
JUleyj Fifth Rep. U- S. Ent. Comm., pp. 158, 159, 1890. 
Packard^ Fifth Rep. U. S. Ent. Comm., p. 1,58, 1890. 
Proc. Bost. Soc. Nat. Hist., xxiv, pp. 545-548, 1890. 
Moth , — Three S , two $ (tiiul others seen). Uniformly pale ash-gray, with three wavy diffuse 
darker lines crossing the fore wings, and a large, heavy, black discal mark, becoming in rubbed 
specimens two twin black dots inclosed in a pale asli spot. (Two very fresh and distinctly 
marked 5 from the United States N'atioual Museum used in this description.) Male anteimse 
moderately well pectinated, but less so than in most of the species. Head and thorax light 
ash-gray; thorax behind over the inesoscntnm darker. Fore wings ash-gray, varying from pale, 
almost whitish, ash to a darkish ash, and crossed by four usually distinct, deeply scalloped, dark 
lines, the scallops more or less filled in with pale gray. At the very base of the wings a short line 
composed of one scallop, which is deflected on the cubital vein aud i)assing out along the 
internal vein becomes confluent with the second line. This second line is double, consistiug of 
two parallel, four-scalloped, dark lines, which pass straight across the wing, ending the same 
distance from the base both on the costa and internal edge. A large, very conspicuous, 
transversely oblong, black discal spot, which in old rubbed specimens usually appears as two 
thill black dots inclosed in a pale area, and which is diagnostic of the species. Extradiscal line 
double, composed of about ten scallops; where it ends on the costa dislocated and set in from the 
subcostal fiortiou. A little more than halfway from this to the edge of the wing is a dark, 
sharply zigzag, diffuse line. A marginal row of about seven distinct black dots. 
Hind wings dark mouse colored, with a faint, diffuse, whitish line, and a dusky patch on the 
internal edge. 
Underside of the fore wings like the upper side of the hind wings, with the costal edge on 
the outer third pale, with four dark spots. Hind wings sordid whitish; outer edge dusky, like 
the fore wings. Fringe pale gray, with the veuular spots alternating with the more distinct 
marginal dots. 
Hind legs very hairy, with two pairs of tibial spurs nearly equal in size. 
Expanse of wings, S 40-45 mm., $ 43 mm.; length of body, 5 21-23 mm., 9 20 mm. 
This is the most common species of the genus, being sometimes abundant enough to be 
actuall 3 ’' destructive to oaks in the Southern States. The species differs from the others of the 
genus in the large, black, wide discal spot, iu rubbed specimens represented by two black dots in 
a pale field, iu the uniformly' pale ash color of the fore wings, and the four distinct, deeply and 
numerously scalloped lines. 
Egg . — ‘^About 0.8 mm. in diameter, hemispherical, shilling; under high power, irregularly 
hexagonally sculptured, the sculptures consisting of raised lines. Golor of dried specimen a dull 
pink,” (Eiley MS.) 
