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Parorgyia Parallela Grole and its Variations. 



By Otto Seifert. New York. 



' While hunting for Xoctuidue at nigiit from July 8th to 13th (Green 

 County, Catskills), about ,12 '■'Parorgyia" caterpillars were found on the 

 trunks of Oak trees ; two more specimens were found during the day-time 

 concealed under stones at the foot of Oaks ; between all these not the 

 slightest difference was discernible. They pupated from July 13th to 17th, 

 save two, which had been infested by some species o'i Microgaster. The 

 first imago {(^) appeared July 2Sth, all the rest during the first week of 

 August (4 cf (j^, 7 9 9)- ^^^^ difference in the coloration of the moths 

 was very remaikable, some (^ (^ and 9 9 t)cing the t^'.pical Parorgyia 

 paral/eli G\oic, others {(^(^ and 9 9) kicking altogether the charact- 

 eristic dark brown line along submedian vein. 



On August 1st a fine typical female and a male without, the dark line 

 were confined in a large gauze-gage, they copulated during the night and 

 remained so till noon. About 250 eggs in two very regular triangular 

 patches were deposited by August 3rd ; they are smooth, apple-shaped, 

 of a whitish-green color and were glued to the leaf by a silver}-, shinmg 

 mass, intermixed with a few hairs. August lolh the eggs turned more 

 opaque, the slight excavation on the top of the egg seemed deeper with _a 

 dark spot forming in the middle, and August 12th, early in the morning, 

 they commenced to hatch. The young larva; ate their egg-shells. ■; 



August 15th. Length 6f caterpillars when crawlmg, about -^^ of an 

 inch. They arrange themselves wliil,e feeding in a semi-circle, wholly de- 

 nuding the leaves of their epidermis ; disturbed, thev suspend themselves 

 on a fine silken cord,, and so drop down. During the day-time they con^ 

 ceal themselves oil the underside of the leaves. They are whitish, head 

 dark brown, mouth parts yellowish ; all segments with 8 fleshy, hair- 

 bearing protuberances or warts arranged as dorsal, supra-stigmatal, sub- 

 stigmalal and pedal hnes, the substigmatal warts giving rise tQ very long 

 hair, spreading like a fringe. * The protuberances on all segments are 

 light brown, variegated with, pale yellow, except on 3rd and 8th seg- 

 ments, where dorsal warts are whitish. On first segment the two infra- 

 stigmatal warts are of about twice the size of the others, fleshy and pro- 

 jecting forward, tipped with black and bearing long brushes of hair. These 

 Itrushes on first segment -and the corresponding ones on anal ring are pro- 

 jecting and of about the size of the larva. Venter whitish, transparent, 

 showing the line of intestines. 



First moult, August iSlh. Length, when moving, 5*,^ of an inch. 

 Ground color greenish-white, also ventral area. Supra-stigmatal warts 

 yellowish-brown from their base, giving this area the appearance of a 



