Gastropacha quercifolia

Gastropacha quercifolia, the lappet, is a moth of the family Lasiocampidae. It is found in Europe and east across the Palearctic to Japan.

Illustration from John Curtis's British Entomology Volume 5

Lappet
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Lepidoptera
Family:
Lasiocampidae
Genus:
Gastropacha
Species:
G. quercifolia
Binomial name
Gastropacha quercifolia
Synonyms
  • Phalaena quercifolia Linnaeus, 1758

The wingspan is 50–90 mm. Meyrick describes it thus - Forewings with 9 to termen; red-brown, with purple-bluish gloss, towards costa blackish-mixed, dorsally ferruginous; first, second, and praesubterminal lines blackish-grey, waved, bent near costa ; a blackish-grey discal mark ; termen waved-dentate. Hindwings as forewings, but lines indistinct, straight, costal area ferruginous, with about six blackish pseudoneuria ; 8 connected with cell by long bar.Larva dark grey or brown ; whitish dorsal marks on 3 and 4 ; 2nd and 3rd incisions deep indigo-blue ; a prominence on 1 2 ; a subspiracular series of tubercles and fringe of pale hairs.[1]


The larvae feed on Crataegus, Prunus spinosa, willow and oak.

Subspecies
  • Gastropacha quercifolia quercifolia (Linnaeus, 1758)
  • Gastropacha quercifolia mekongensis de Lajonquière, 1976
  • Gastropacha quercifolia thibetana de Lajonquière, 1976
gollark: DC is made of numbers, in the purely useless sense.
gollark: Basicallyscore = views + unique views * 6 + clicks * 12if hatchling, optimal score is 13000 at 4d and 5000 at 7d (between the two extremes, it's averaged)if egg, optimal score is 5000 at 4d and 0 at 7d (averaged again)it's safeish if the score is less than 1.5x the optimal score.
gollark: ```javascriptfunction getScore(dragon) { return dragon.views + (dragon.uniqueViews * 6) + (dragon.clicks * 12);}const nextStageAge = 72;const maxTime = 168;function getOptimalScore(dragon) { const time = dragon.hoursRemaining; const age = maxTime - time; if (dragon.type == "hatchling") { return 5000 + (8000 * (age / nextStageAge)); } else { return 5000 * (age / nextStageAge); }}function getScoreRatio(dragon) { return getScore(dragon) / getOptimalScore(dragon);}function isSafe(dragon) { return getScoreRatio(dragon) < 1.5;}```
gollark: I guess that since I'm banned anyway I might as well show my modified EATW formula...
gollark: I mean, it'd be hard to viewbomb something that old.

References
  1. Meyrick, E., 1895 A Handbook of British Lepidoptera MacMillan, London pdf This article incorporates text from this source, which is in the public domain.


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