Callisto coffeella (Zetterstedt, 1839)

highland slender

mine

The larva first makes short epidermal gallery, followed by a distinctly folded lower-surface tentiform mine. After some time the mine is vacated and the larva lives free then in a leaf margin that has been folded downwards and is secured with silk. In small leaves the two halves are simply spun together in a pod. Two of these leaf folds are made and eaten out.

The folds with the free living larva strongly ressembly the work of a sawfly larva on the same plant; however, then no silk is used to anchor the leaf margin (Bland, 1993a).

hostplants

Salicaceae, monophagous

Salix arbuscula, glabra, myrsinifolia, phylicifolia, repens, silesiaca, waldsteiniana.

Also mentioned from Salix alba and caprea by Maček (1999a); because these cannot be considered arcto-alpine species, confirmation is required.

phenology

Larvae in July – August (Hering, 1957a).

distribution within Europe

From Fennoscandia and North Russia to the Pyrenees, Italy, and Romania, and from Scotland to the Ukraine; boreomontane species (Fauna Europaea, 2010).

larva

See Bland, Schmid.

pupa

See Patočka & Turčáni, Schmid.

synonyms

Callisto interruptella (Zetterstedt, 1839); C. blandella Müller-Rutz, 1920.

notes

The name should not be confused with Leucoptera coffeella (Guérin-Ménéville, 1842). That is a pest in coffee crops (“CLM”, coffee leafminer) about which there is a voluminous literature.

references

Baldizzone (2008a), Bengtsson & Johansson (2011a), Bland (1993a), Buszko (1992b), Buszko & Baraniak (1987a), Deutsch (2017a), Emmet, Watkinson & Wilson (1985a), Hering (1957a), Kirichenko, Huemer, Deutsch ao (2015a), Klimesch (1950c), Kozlov & Kullberg (2006a), Maček (1999a), Palmer ao (1984a), Patočka & Turčáni (2005a), Schmid (2019a), Szőcs (1977a).