NOTE ON REARING LASIOCAMPA POPULIFOLIA, ESP. 11 
Var. gen. 2. Baeticaria, Scharf., Bechstein und Scharfenberg’s Nat. Schddl. 
Forstins., li., p. 638, excl. cit. (1805) =? crepuscularia, Hw.(1809) nec., Hb. 
=consonaria, Stph. (1829) nec. Hb.=strigularia, Stph. (1829). 
? Ab. defessaria, Frr., 510. 1 (1847); Garbowski, SB. kK. Ak. Wiss. Math. Nat. 
Cl., ci., 1, p. 986 (1892). Unicolorous grey or grey-brown, with whitish 
subterminal. 
Ab. passetii, Mieg (1886). Blackish brown. 
No. 2, Crepuscunaria, Hb., 158 (1796) = biundularia, Esp. pro parte (cir. 1797) 
=laricaria, Buckl., Larv. Brit. Moths, vii., p. 37 (1897), nec., Dbld. 
2? Ab. defessaria, Frr., 510. 1. (1847). Unicolorous grey with whitish sub- 
terminal. 
Ab. delamerensis, White (1877) =schillei, Klem. (1893). Smoky blackish. 
Ab. nigra, Mieg. (1886). Black, with white subterminal. 
2? Var. incertata, Stgr., Iris, x., p. 59 (1897). Grey-white, blackish markings 
more prominent than in type. Amurland (Vladivostok, Bikin), end of 
May. 
2? Var. gen. 2. lutamentaria, Graes., Berl. Ent. Zeit., xxxii., p. 401 (1888). 
Smaller than type, same yellow-white ground colour, mostly weaker 
marked. Amurland (Isle of Askold, Sutschan, Vladivostok), cir. 27th 
July-7th August. 
Note on Rearing Lasiocampa populifolia, Esp. 
By L. J. LAMBILLION, Vice-President of the Ent. Soc. of Namur. 
On July 28rd, 1898, a female Lastocampa populifolia was brought 
tome. ‘This had been picked up in a gutter in the town. I was very 
pleased, as it promised a chance of rearing the insect should I obtain 
fertile eges, and I placed it ona sheet of white paper, in a box used 
for this purpose, and I awaited events, 7.e., eggs. Two days later 42 
were laid, and I knew that part of the eggs had been previously laid, 
and those I had were fertile, for the females of this species usually lay 
a considerable batch. I at once sent a dozen eges to M. l’Abbé de 
Joannis, in France, asking him for advice as to rearing the larve, for 
I knew that he had successfully bred the species in England some 
years before. On August 3rd, eleven days after the eggs were laid, the 
larve hatched, and I had 26. In its first instar the larva much 
resembles that of L. queretfolia. Like that, it is of a brown (almost 
black) colour, but one recognises it readily by the white spot on the 
8rd segment, which, however, one only sees when the larva moyes. 
All entomologists are agreed that this is a difficult species to rear ; 
everything goes well until winter, but then, as soon as the larva 
ceases to feed, it dries up, commencing from the anus, and one some- 
times sees larvee with the posterior half of the body quite dead whilst 
the anterior part may live for some weeks. When one is able to pro- 
cure eggs in June the larve are usually fullfed by the middle of 
August, and the imagines emerge at the end of the same month 
or in September, and one obtains the summer form, which is 
much smaller than the type, but one rarely gets this chance. Usually 
the larvee hybernate very small. ‘The chance occurred once at Saint- 
Servais, to M. Castin, who obtained a batch of eggs from a June 9 
one year when the spring was very warm, when from a hundred larve 
more than sixty pupated at the commencement of August, the 
Imagines emerging at the end of the same month, whilst the re- 
mainder of the larve fed up slowly, but did not survive the winter. 
The result, therefore, was an excellent one, for this summer form is 
very rare, and much wanted by amateurs. 
