DIMORPHA. 235 



Genus : Dimorpha, Hiibner. 



Synonymy. — Genus: Dimorpha, Hb., "Tent.," p. i (1806); " Franck Cat.," 

 p. 88 (1825); Tutt, "Pract. Hints, &c." pp. 19, 61, 75 (1901). Phalaena- Bombyx, 

 " Sys. Nat.," 10th ed., p. 499 (1758) ; 12th ed., p. 817 (1767) ; " Fn. Suec.," ed. 2., 

 p. 294 (1761) ; Bkh., " Sys. Besch.," iii., p. 42 (1 790) ; Brahm, " Ins.-KaL," pp. 183, 

 526(1791); [F.J.A.D.,] "Bork. Rhein. Mag.," p. 327 (1793). Phalaena, Hufn., 

 "Berk Mag.," ii., p. 400 (1766) ; Rott., " Naturf.," viii., p. 102 (17 7 b) ; Scheven. 

 "Naturf.," xiv., p. 66, pi. iii., figs. 1-5 (1780). Bombyx, Fab., " Sys. Ent.," p. 565 

 (1775); "Spec. Ins.," ii., p. 178 (178 1) ; "Mant. Ins.," ii., p. 113 (1787); "Ent. 

 Sys.," iii., pt. 1, p. 427 (1793) ; [Schiff.,] " Schmett. Wien.," p. 49 (1775) ; ed. ii.,p. 

 55 (1801) ; Esp., " Schmett. Eur.," iii., pi. xxiii (1783) ; p. 115 (1784) ; Hb., " Eur. 

 Schmett.," figs. 1-2 {fire. 1800), text p. 102 (1805) ; Schrk., "Faun. Boica," ii., i,p. 

 245 (1801) ; ii., 2, p. 150 (1802) ; Haw., " Lep. Brit.," p. 80 (1803) ; .Latr., " Hist. 

 Nat.," xiv., p. 181 (i 805); Godt., "Hist. Nat.," iv., p. 149 (1823). Bombyx 

 (-Laria), Latr., "Gen. Crust.," iv., p. 219 (1809), nee Schrank. Endromis, Ochs., 

 "Die Schmett.," iii., p. 15 (1810); Oken, " Lehrb. Zool.," i., p. 715 (1815) ; Sam., 

 "Ent. Comp.," p. 247 (1819) ; Hb., " Verz.," p. 143 (circ. 1822); Stphs., " 111. 

 Haust.," ii., p. 34 (1828); " Cat. Br. Ins.," ii., p. 45(1829); "List Br. An. Br. 

 Mus.," v., p. 44 (1850) ; Meig., " Eur. Schmett.," ii., p. 153 (1830) ; Bdv., "Eur. 

 Lep. Ind. Meth.," p. 50 (1829); "Gen. et Ind.," p. 74 (1840); Wood, " Ind. 

 Ent.," p. 21 (1839) ; Dup., " Cat. Meth.," p. 80 (1844; ; Humph. & Westd., " Brit. 

 Moths," p. 79 (1841) ; Evers., "Faun. Volg.-Ural.," p. 119 (1844) ; H.-Sch., " Sys. 

 Bearb.," ii., p. 98 (1846); Boh., "Vet. Ak. Handl.," 1848, pp. 150-1 (1850); 

 Hevd., "Eur. Lep. Cat. Meth.," ed. 3, p. 28 (1851) ; Sta., "Man.," L, p. 

 J 59 ( l8 57) 5 Spev., " Geog. Verb.," i., p. 415 (1858) ; Hein., " Schmett. Deutsch.," 

 p. 199 (1859); Humph., " Gen. Brit. Moths," p. 20 (i860) ; Staud , "Cat.," ed. 1, 

 p. 30 (1861) ; ed. 2, p. 70 (1871) ; ed. 3, p. 125 (1901) ; Rbr., " Cat. Lep. And.," 

 p. 367 (1866); Snelk, "DeVlind.," p. 193 (1867); Berce, "Faun. Franc./' ii., p. 

 203 (1868); Nolck., "Lep. Fn. Est.," i., p. 131 (1868); Newm., "Brit. Moths," 

 p. 47 (1869) , WUgrn., "Skand. Het," ii., p. 125 (1869); Curo, "Bull. Soc. Ent. 

 Ital.," viii., p. 153 (1876) ; Frey, " Lep. Schweiz, " p. 99 (1880) ; Kirby, " Eur. Butts, 

 and Moths," p. 125 (1880); "Cat.," p. 723 (1892); "Handbook," etc., iv., p. 67 

 (1897) ; Buck., "Larvae," etc., iii., p. 60 (1889); Meyr., "Handbook." etc., p. 319 

 (1895); Tutt, "Brit. Moths," p. 47 (1896); Grote, "" Die Saturn.,"' p. 5 (1896); 

 Barr., " Lep. Brit.," iii., p. 50 (1896). Dorvillia, Leach, " Edinb. Encycl., 

 ix., p. 132 (1815). 



Dimorpha was the generic name given to versicolora by Hiibner in 

 1806, in the Tentamen, p. 1, the species having been previously figured 

 and described by him {Eur. Schmett. ^ p. 102, pi. i., figs. 1 — 2) under 

 the name of Bombyx versicolora, and this species, being the only one 

 mentioned, became the type of the genus. The genus was, however, 

 first diagnosed by Ochsenheimer {Die Schmett., iii., p. 15) in 1810, 

 as follows : 



Endromis. — The antennae bipectinate ; the abdomen very hairy, the wings 

 thinly scaled, with a hook-shaped median spot. The larva naked, with a pyramidal 

 hump on the last segment. Cocoon of the texture of parchment.* 



Meyrick considers the characters of the genus to be those of 

 the family, and diagnoses them (Handbook, pp. 318 — 319) as : 



Imago : Head densely rough-haired, ocelli present. Eyes glabrous. Tongue 

 rudimentary. Antennae under -|, in <J bipectinated to apex. Labial palpi rather 

 short, densely hairy. Thorax densely hairy above and beneath. Abdomen densely 

 hairy. Femora and tibiae densely hairy, posterior tibiae without middle-spurs, eiid- 

 spurs very short. Forewings : 1 b simple, 4 and 5 connate fiom lower angle, 6 

 from near 9, 7 and 8 out of 10. Hindwings without frenulum, 4 and 5 connate from 

 lower angle, 6 and 7 connate, 8 connected by bar with cell near base. Ovum : 



* Ochsenheimer gives the following note on the genus: "In this genus also, 

 which differs essentially from all others, there is only one European species. Schrank, 

 in his Fauna Boica, has united mori and versicolora under the name Bombyx, but 

 ?nori belongs as little to the European proc'uets as do the exotic plants which only 

 thrive in hot-houses, and, therefore, cannot find place in the series of Schmetterlinge 

 von Europa,^ 



