CATALOGUE OF PAUEARCTIC LACHNEIDES. 



22.5 



The parts of the fore wing Jying between base and outer-margin show the same 

 light dentate transverse line as in P. populi; on the other hand the tolerably uniform 

 black-brown ground colour of P. populi is, in albescens, more grey and irregularly 

 blotched, since the white ground colour everywhere shows through. The black 

 scales outside the dentate transverse line only occupy a part of the otherwise 

 white outer-margin. The transverse nervure is marked by a yellowish dot, which 

 is black in P. populi. Hindwings in the ? pure white, in the s with fine and 

 narrow grey nervures. Fringes of all the wings brown, at the ends of the nervures 

 narrowly intersected with yellow. Underside pure white, with the markings of the 

 upper side showing through ; all the wings with yellowish costa and very fine 

 yellowish nervures. 



Stichel remarks (Berl. Ent. Zeits., xliv.J p. 144) that, although 

 Heyne terms this an albino, it is not at all appropriate, since true 

 albinic specimens represent a diseased condition with a reduction of 

 the scaling and a paling-off of the colour, which need not necessarily 

 be white. In this form there is simply an extension of the usual 

 whitish parts with normal development. 



e. ab. albo?narginata, Heyne, "Soc. Ent. ,"xiii., pp.105, 106 ( 1898); Stichel, "Berl. 

 Ent. Zeits.," xliv., p. 144, pi. ii., figs. II, 12 (1900). Alis anterioribus latissime 

 albidomarginatis, fascia media fere nigra ; alis posterioribus albis, basi tantum griseis ; 

 ciliis brunneis lathis fiavo intersecatis. This would not appear to be an albino, 

 in spite of its resemblance in many respects to the preceding aberration ; but the 

 broad black-brown central band of the forewings is just as dark and of the same 

 proportions as in the type, also the basal half of the wing is tinted with grey-brown ; 

 therefore, only the broad outer half of hindwings, and the very broad margin of 

 the forewings are white ; in the latter the basal patch is large and light, yellowish- 

 white. Fringes nearly uniformly brown, and interrupted with white. Underside of 

 all the wings dark interiorly, white exteriorly; nervures finely yellow. 



Stichel notes {Berl. Ent. Zeits., xliv., p. 144) this as varying in the 

 same direction as the preceding, but the basal and central area 

 of the forewings not very different from the type ; the outer part, 

 however, very broadly white ; the hindwings, from the base outwards to 

 the transverse band, grey-brown, beyond which, to the margin, it is white. 



Catalogue of the Pal^earctic 

 Lachneides. 

 Chondrostegid^e. 

 Chondrostegijsle. 

 Chondrostegidi. 

 Eustaudingeria, Dyar 



vandalicia, Mill. 

 Chondrostega, Led. 

 pastrana, Led. 



var. hyrcana, Staud. 

 var. palaestrana, Staud. 

 subfasciata, KLlug 

 fasciana, Staud. 

 constantina, Auriv. 

 Lachneid^e. 



Malacosomin^e. 

 Malacosomidi. 

 Malacosoma, Hb. 

 castrensis, Linne 

 ab. pallida, Tutt 

 ab. obsoleta, Tutt 

 ab. taraxacoides, Bell. 

 a\ intermedia, Tutt 

 ab. virgata, Tutt 

 ab. unicolor, Tutt 

 ab. rufovirgata, Tutt 



Lachneides*. 



ab. bifasciata. Tutt 



ab. veneta, Stdtss. 



ab. hilleri, Stdfss. 



ab. brunnea, Tutt 



ab. minor, Tutt 



var. (et ab ) kirghisica, 



Staud. 

 neustria, Linne 

 ab. quercus, Esp. 

 ab. ochracea - confluens, 



Tutt 

 ab. annularis, Geoff. 

 ab. ochracea-fracta, Tatt 

 ab. ochracea - unicolor, 



Tutt 

 ab. confluens, Selys 

 ab. virgata, Tutt 

 ab. fracta, Tutt 

 ab. unicolor, Tutt 

 ab. cervina, Tutt 

 ab. cervina-confluens/Iutt 

 ab. cervina-virgata, Tutt 

 ab. cervina- fracta, Tutt 

 ab. cervina-vulgaris, Tutt 

 ab. vulgaris, Bork. 



* The arrangement of this Catalogue is purely tentative. We do not know the early 

 stages of several species, and the position of such remains a matter of great uncertainty. 



