Orchestes pilosus (Fabricius, 1781)

Orchestes pilosus: mine on Quercus robur

Quercus robur, Castricum aan Zee

Orchestes pilosus: mine on Quercus robur

mine

Orchestes pilosus: mine on Quercus robur

detail of the frass

Orchestes pilosus: mine on Querus robur

Quercus robur, Belgium, prov. Antwerp, Mol © Carina Van Steenwinkel: underside leaf, with oviposition scar

Orchestes pilosus

other leaf, upperside

Orchestes pilosus

lighted from behind; larve in the beginning of a cocoon

Orchestes pilosus

larva in the mine

mine

Oviposition in the underside of a vein, usually the midrib. Here an oviposition scar remains. From this point a small full depth blotch develops, of about one cm in diameter, at the leaf margin, mostly in the leaf tip. The initial part of the mine, a quickly broadening corridor, later often tears in. Frass blackish-green, in short thread fragments, pasted to the upper epidermis. Pupation in the mine, in a globular cocoon, made from secretion that is produced by the larva itself (Scherf, 1964a).

hostplants

Fagaceae, broadly monophagous

Quercus ilex, petraea, pubescens, robur.

In southern parts of Europe also on evergreen Oaks.

phenology

Larvae in April-June (Hering, 1957a). Adults emerge in May, Junw (Reinheimer & Hassler, 2010a).

BENELUX

BE recorded (Curculionidae.be, 2010).

NE recorded (Heijerman, 1993a).

LUX not recorded (Fauna Europaea, 2007).

distribution within Europe

From Norway, Ireland and France eastwards to Russia, Romania and Italy (Fauna Europaea, 2007).

larva

synonyms

Rhynchaenus pilosus.

notes

Rare in the Netherlands. Common in the UK (Morris, 1993a).

references

Beiger (1979a), Buhr (1933a), Caillol (1954a), Heijerman (1993a), Hering (1923a, 1924a,b, 1930a, 1934g, 1936b), Maček (1999a), le Monnier (2003a), Morris (1993a), Reinheimer & Hassler (2010a), Robbins (1991a), Scherf (1964a), Sønderup (1949a) Stammer (2016a), Tomov & Dimitrov (2007a), Vorst (2010a).

31/03/2017

pub 31.iii.2017 · mod 25.vii.2017