Scythropia crataegella (Linnaeus, 1767)

Lepidoptera, Yponomeutidae

Scythropia crataegella mines

Crataegus monogyna, Nieuwendam

Scythropia crataegella mines

another leaf (together with Rhamphus oxyacanthae).

Scythropia crataegella mines

one more

Scythropia crataegella mine

primary mine; at right, partly on top of the midrib, the egg

Scythropia crataegella mines

secondary mines

Scythropia crataegella mines

secondary mines, underside; frass grains are stuck in an invisible, thin, spinning

Scythropia crataegella: secondary mines on Prunus spinosa

Prunus spinosa, Veenendaal © Ben van As; secondary mines

Scythropia crataegella: secondary mines on Prunus spinosa

lighted from behind

mine

The young larvae make very small (≤ 3 mm) corridor or blotch mines, usually several in a leaf. The primary mine generally lies adjacent to the midrib; as fas as I have seen the egg always is upper-surface. The secondary mines often are found in leaves without primary mine: obviously the larvae easily move to another leaf. The secondary mines are made from the underside of the leaf; while moving around silk is deposited under the leaf. Most frass is ejected from the mines, and part of the frass grains remain stuck in the spinning. Rather soon the larvae start living completely free in a common spinning under a leaf. The hibernate in a hibernaclum and continue living free in the spring.

hostplants

Rosaceae, oligophagous

Cotoneaster integerrimus; Crataegus monogyna; Malus domestica; Prunus domestica, spinosa; Pyrus communis.

Wörz (1957a) adds Euonymus and Quercus; this needs confirmation.

phenology

Larvae from autumn till in June.

BENELUX

BE recorded (Phegea, 2010).

NE recorded (Kuchlein & de Vos, 1999a; Microlepidoptera.nl, 2010).

LUX recorded (Fauna Europaea, 2010).

distribution within Europe

From Fennoscandia to the Mediterranean, and from Britain to Romania (Fauna Europaea, 2010).

larva

social; head black, with brown and white lines; mottles reddish brown to fuscus grey (Agassiz, 1996a).

pupa

Illustrated by Patočka (1997a).

references

Agassiz (1996a), Baldizzone (2004a), Bengtsson & Johansson (2011a), Buhr (1936a), Burmann (1951a), Emmet (1976a), Heckford (1986a), Hering (1957a), Kasy (1987a), Kuchlein & Donner (1993a), Kuchlein & de Vos (1999a), Patočka (1997a), Patočka & Turčáni (2005a), Robbins (1991a), Schütze (1931a), Skala (1951b), Szőcs (1977a), Wegner (2010a), Wörz (1957a).

15/05/2017

pub 15.v.2017 · mod 28.vi.2017