Heterarthrus cuneifrons Altenhofer & Zombori, 1987

Heterarthrus cuneifrons mine

Acer pseudoplatanus, Baarschot

mine lighted from behind; the larve used to be quite sluggish, but the strong light of the scanner made it move violently, resulting in bizarre colours.

Heterarthrus cuneifrons cocoon

larva in almost finalised cocoon

Heterarthrus cuneifrons mine

Acer pseudoplatanus, België, Antwerpen; © Chris Snyers

Heterarthrus cuneifrons: occupied mines on Acer pseudoplatanus

Acer pseudoplatanus, Belgium, prov. East-Flanders, Volkegembos ~ Bos t’Ename © Carina Van Steenwinkel: two young mines, each with two larvae …

Heterarthrus cuneifrons: occupied mine on Acer pseudoplatanus

… some days later

Heterarthrus cuneifrons: excisions

an abnormal situation: the excisions are completed, by no cocoons haven been made below; the mine was vacated.

mine

A large, practically full depth blotch without an apparent initial corridor, starting in the centre of a leaf. By fusion of mines several larvae may occur together. The full grown larve makes a circular cocoon, attached to upper epidermis. Before that a circular cut has been made in the upper epidermis. The completed cocoon falls out of the mine together with the disk of upper epidermis.

hostplants

Sapindaceae, narrowly monophagous

Acer pseudoplatanus.

phenology

Larvae were found in the first half of June; the cocoon was made one week later.

BENELUX

BE found in 2007 by Paul Fontaine in the Forêt des Soignes near Brussels.

NE recorded (Ellis, 2006).

LUX not recorded.

distribution within Europe

Described from Lower Austria; found not much later in Britain. Locally common there in 2013 (Homan, 2014a).

larva

synonyms

Liston (1995a) stated that the valid name for this species was H. wuestnei (Konow, 1905), but this was redressed by Dathe, Taeger & Blank (2001a).

notes

Chris Snyers discovered that regularly mines are found with two larvae. As is shown in his picture they are the result of two independent ovipositions, a few mm apart.

references

Altenhofer (1980a, 2003a), Altenhofer, Hellrigl & Mörl (2001a), Altenhofer & Zombori (1987a), Boevé ao (2009a), Dathe, Taeger & Blank (2001a), Homan (2014a), Liston (1995b), Liston & Blank (2006a), Pschorn-Walcher & Altenhofer (2000a), Späth & Liston (2003a), Taeger, Blank & Liston (2006a), Taeger ao (1998a).

10/06/2015

pub 27.x.2016 · mod 25.vii.2017