Eriophyes leionotus (Nalepa, 1891)

on Betula

Betula pubescens, België, prov. Namen, Andenne © Jean-Yves Baugnée

Eriophyes leionotus gall on Betula pubescens

Betula pubescens, Belgium, prov. Namur, Andenne © Jean-Yves Baugnée

Eriophyes leionotus gall on Betula pubescens

detail

Eriophyes leionotus  gall on Betula pubescens

Betula pubescens, Hollandsche Rading, Einde Gooi: bovenzijde

Eriophyes leionotus  gall on Betula pubescens

underside

Eriophyes leionotus  gall on Betula pubescens

underside, stronger magnification

Eriophyes leionotus gall

transverse section

Eriophyes leionotus gall

transverse section, stronger magnification

Eriophyes leionotus: gall on Betula pubescens leaf

Betula pubescens, Eerbeek © Arnold Grosscurt

Eriophyes leionotus: gall on Betula pubescens leaf

underside

Eriophyes leionotus: gall hair

the galled hairs are obtuse

Eriophyes leionotus: gall hair, tip

the wall of the hairs is thin and smooth

gal

the galls are distributed along the midrib over the lower half of the leaf; the hairs of the gall are obtuse.

The tufts of hair in an ungalled vein axil have long and acute hairs, and this type of hairs does also occur in, and even more around, a galled axil!

hostplants

Betulaceae, narrowly monophagous

Betula maximowicziana, pubescens & var. pumila, pubescens x pendula.

synonym

Aceria leionota, Aculus leionotus; often incorrectly spelled as lionotus / lionota.

references

Béguinot (2002g,h, 2006a,b, 2007b, 2012a), Bellmann (2012a), Bellmann (2012a), Buhr (1964b), Coulianos & Holmåsen (1991a), Dauphin & Aniotsbehere (1997a), Dietrich (2016a), Farkas (1965a), Fjelddalen (1995a), Hellrigl (2003a), Houard (1908a), Jočić & Petanović (2012a), Koops (2013a), Lambinon, Carbonnelle & Claerebout (2015a), Petanović & Stanković (1999a), Redfern & Shirley (2011a), Roskam (2009a), Schneider (2016a), Skoracka, Lewandowski & Boczek (2005a), Sylvén (1960a), Tomasi (2003a, 2014a), Weidner (1954a).

mod 10.viii.2018