Elachista humilis Zeller, 1850

obscure dwarf

mine

In spring a short corridor is made that is almost stuffed with frass. After hibernation this mine is vacated, and the larva then makes a number of elongated blotches, all descending from the leaf tip. These latter mines are whitish, with irregularly scattered frass.

hostplants

Cyperaceae, Poaceae, narrowly polyphagous

Agrostis; Anthoxanthum odoratum; Carex; Deschampsia cespitosa; Festuca; Holcus lanatus; Phalaroides arundinacea; Poa pratensis.

Deschampsia cespitosa is the main hostplant; the other hostplants on the list are not all equally trustworthy because of possible confusion with Elachista canapennella (Traugott-Olsen & Nielsen, 1977a).

phenology

Larvae from autumn till spring (Bland, 1996a; Traugott-Olsen & ]Nielsen, 1977a).

BENELUX

BE recorded (Phegea, 2009).

NE recorded (Kuchlein & de Vos, 1999a; Microlepidoptera.nl, 2009).

LUX not recorded (Fauna Europaea, 2009).

distribution within Europe

Almost entire Europe, except the Iberian and the Balkan Peninsula (Fauna Europaea, 2009).

larva

Lemon yellow, dull yellowish to greenish yellow with a lighter mid-dorsal line; head light brown. According to Hering (1957a) the prothoracic plate has a darker centre.

pupa

Described by Patočka & Turčáni (2005a).

synonyms

Elachista airae Stainton, 1858; E. perplexella Stainton, 1858.

references

Baran, Mazurkiewicz & Pałka (2007a), Bidzilya, Budashkin & Zhakov (2016a), Bland (1996a), Buhr (1935a,b), Buszko & Baraniak (1989b), Ford (1943a),l Hering (1957a), Huemer (2012a), Kuchlein & Donner (1993a), Kuchlein & de Vos (1999a), Parenti & Varalda (1994a), Patočka & Turčáni (2005a), De Prins (1998a), Robbins (1991a), Schütze (1931a), Sønderup (1949a), Sruoga & Ivinskis (2005a), Szőcs (1977a), Traugott-Olsen & Nielsen (1977a), Wörz (1957a).

14/01/2017

mod 13.ii.2018