Elachista obliquella Stainton, 1854

wood dwarf

mine

Oviposition on the upperside of the leaf, often 2-3 eggs on the same leaf. Initially a narrow, brown, ascending corridor is made, with most frass in its basal part. This mine is soon vacated, and a new mine is made in another leaf. This secondary mine is an elongated, somewhat inflated blotch, as wide as the leaf.

hostplants

Cyperaceae, Poaceae, narrowly polyphagous

Brachypodium pinnatum, sylvaticum; Bromopsis erecta, ramosa; Calamagrostis; Carex acuta, elata, ornithopoda, spicata, sylvatica; Dactylis glomerata; Deschampsia cespitosa; Festuca; Hordelymus europaeus; Melica; Milium effusum; Poa chaixii; Rostraria cristata.

References in the literature to Elymus repens and Sesleria albicans probably refer to E. adscitella (Traugott-Olsen & Nielsen, 1977a; Bland, 1996a); possibly this also applies to Deschampsia.

phenology

Larvae from autumn till mid-May, and in July (Traugott-Olsen & Nielsen, 1977a; (Bland, 1996a).

BENELUX

BE recorded (Phegea, 2009).

NE not recorded (Fauna Europaea, 2009).

LUX not recorded (Fauna Europaea, 2009).

distribution within Europe

From Scandinavia to the Iberian Peninsula, Italy, and Romania, and from Ireland to the Ukraine; also in Central Russia (Fauna Europaea, 2009).

larva

Dull grey green; head light brown; prothoracic shield dark brown, divided (Traugott-Olsen & Nielsen, 1977a).

pupa

Described by Patočka (1999a).

synonyms

E. megerlella auct. In de oudere literatuur vaak verward met Elachista adscitella.

references

Baran (2005a), Bidzilya, Budashkin & Zhakov (2016a), Bland (1996a), Buszko (1990a), Ford (1943a), Hering (1925a, 1957a), Kaila, Nupponen, Junnilainen, Nupponen, Kaitila & Olschwang (2003a), Parenti & Varalda (1994a), Patočka (1999a), De Prins (1998a), Robbins (1991a), Sruoga & Ivinskis (2005a), Stolnicu (2007a), Szőcs (1977a, 1978a), Traugott-Olsen & Nielsen (1977a).

14/01/2017