LASIOCAMPA QUERCUS. 43 



I (arc. 1840); "Cat. Meth.," p. 78 (1844) ; Curt., " Brit. Ent.," iii., expl. pi. clxxx, 

 (1827); Stephs., " Illus. Haust.," ii., p. 40 (1828) ; " List Br. An. Br. Mus.," p. 46 

 (1850); Bdv., "Eur. Lep. Ind. Meth.," p. 48 (1829); "Icon. Chenilles," pi. v., figs. 

 1-2 {circ. 1840); " Gen. et Ind. Meth.," p. 71 (1840) ; Meig., "Eur. Schmett.," ii., p. 

 196 (1830) ; Dahlb , " Jaktt. Skand. Fjar.," p. 29, figs. 11-14 (1837) ; Wood, "Ind. 

 Ent.," p. 21, fig. 43 (1839) ; Humph, and Westd., " Brit. Moths," p. 58 (? 1843) ; 

 Evers., "Faun. Vol g.- Ural.," p. 154 (1844); H.-Sch., " Sys. Bearb.," ii., p. 106 

 (1847) ; Heyd., " Lep. Eur. Cat. Meth.," 3rd ed., p. 26 (1851) ; Led., " Verh. z.-b. 

 Wien.," ii., Abh. p. 75 (1853) ; Sta., " Man.," 1., p. 153 (1857) ; Gn., "Ann. Soc. 

 Ent. Fr.," (3), vi., p. 442 (1858) ; (4), viii., p. 405 (1868) ; " Lep. Eure-et-Loir," p. 82 

 (1875); Speyer, " Geog. Verb.," i., p. 413 8 5 8 ); "•> p. 288 (1862) ; Hein., " Schmett. 

 Deutsch.," p. 205 (1859) ; Staud., "Cat.," 1st ed., p. 30 (1861); 2nd ed., p. 69 (1871) ; 

 3rd ed., p. 120(1901); "Hor. Soc. Ent. Ross.," xiv., p. 358 (1877); Newm., "Ent.," 

 ii., p. 139 (1865) ; iii., p. 27 (1866) ; " Brit. Moths," p. 43 (1869) ; Ramb.* " Cat. 

 Lep. And.," p. 357 (1866); Snell., " De Vlind.," p. 185 (1867); Berce, "Faun. 

 Fran?.," ii., p. 190(1868) ; Nolck., "Lep. Fn. Estl.," i., p. 127 (1868) ; Wallgrn., 

 " Skand. Het. Fjar.," ii., p. 60 (1869) ; Cuni y Mart., " Cat. Lep. Bare," p. 69 

 (1874) ; Curo, " Bull. Soc. Ent. Ital.,'' viii., p. 150 (1876) ; Frey, " Lep. Schweiz," 

 p. 97 (1880} ; Kirby, " Eur. Butts, and Moths," p. 139 (1880) ; " Cat.," p. 827 (1892) ; 

 "Handbook," &c., iv., p. 121 (1897); Lampa, "Ent. Tids.," vi., p. 41 (1885); 

 Jordan, " Schmett. N.-W. Deutsch.," p. 96 (1886) ; Hinchliff, " Ent.," xix., p. 272 

 (1886) ; Battersby, " Ent.," xx., p. 109 (1887) ; Buckl., " Larvae," &c, iii., p. 56, pi. 

 xlvii., figs. 2«-ft'(i889); Auriv., " Nord. Fjar.," p. 63 (1889); "Iris," vii., p. 151 

 (1894); ftuhl, "Soc. Ent.," v., p. 178 (1891); Carad., "Iris," viii., p. 91 

 (1895) ; Meyr., " Handbook," p. 320 (1895); Thomps., "Ent. Record," viii., pp. 125, 

 158 et seq. (1896) ; Tutt, " Brit. Moths," p. 54 (1896) ; "Ent. Record," viii., p. 299 

 (1896); xiii., p. 114 (1901) ; " Proc. Sth. Lond. Ent. Soc," 1898, pp. 1 et seq. 

 (1898); Barr., "Lep. Brit.," iii., p. 25, pi. xci (1896) ; Dyar, "Can. Ent.," xxx., p. 5 

 (1898) ; Grote, "Illus. Zeits. fur Ent.," iii., p. 70 (1898) ; Reutti, "Lep. Baden," 

 2nd ed., p. 58 (1898); Agassiz, "Mitt. Schw.," x., p. 248 (1900); Bacot, "Ent. 

 Record," xiii., pp. 114 et seq. (1901); Warbg., "Ent. Rec," xiii., pp. 237 et 

 seq. (1901). Roboris, Stephs., " 111. Haust.," vii., p. 41 (1828). Familiaris, Newm., 

 " Zool.," vii., p. 27 (1849) ; " Ent.," iii., p. 27 (1866). 



Original description. — Querals. P. Bombyx elinguis, alis 

 reversis ferrugineis : striga flava, punctoque albo.* Mouff., Ins., 

 187, f. 2 ; Goed., Ins., 1, t. 7 ; List, Goed., f. %2> ; Rai, lis., 142, n. 2 ; 

 Merian, Eur., 1., t. 10 ; Alb., Ins., t. 18, f. 25 ; Reaum., Ins., 1.-, t. 35 ; 

 Roes., Ins., 1., phal. 2., t. 35 ; Wilk., Pap., 22, t. 3, a, 11, 12 ; Vddm., 

 Diss., 59. Habitat in Qtiercu, Betula, Pruno spinosa. Larva lasvis, 

 pilosa, grisea, nigro annulata, alboque maculata (Linne, Syst. Nat. 

 xth. ed., p. 498). 



Imago. — 50mm. -7 5mm. in expanse. $ . Anterior wings, rich chestnut- 

 chocolate- or red-brown, with a white dark-edged discal spot towards 

 costa ; a transverse yellow band or fascia between this spot and 

 outer margin, very variable in width ; posterior wings similar but 

 without discal spot. $ . Ochreous or tawny instead of chocolate- 

 brown. Head, thorax and abdomen of the same colour as the 

 wings. 



Sexual dimorphism. — There is a very great difference in the 

 sexes of this species — in size, shape, colouring, habits, &c. The 

 males are smaller, more strongly built, and much more active 

 than the females. They are of a deep chocolate-, or rich red-brown 

 colour, whilst the females are pale ochreous in tint (and only as 

 rare aberrations assume the male colour). The ? abdomen 

 is large and (before the eggs are laid) very heavy ; the wing-area 



* In the xiith ed. of the Sys. Naturae, and in the Fauna Suecica, Linne adds : 

 " Litura flava ad basin alas superioris." This may be a direct reference to var. 

 callunae, although quercus frequently possesses the basal patch. 



