Physemocecis ulmi (Kieffer, 1909)

on Ulmus

Physemocecis ulmi: gall on Ulmus spec.

Ulmus spec., Hungary, Mosonmagyaróvár 24.v.2019 © László Érsek

Physemocecis ulmi: gall on Ulmus spec.

same gall, underside: fresh galls are almost imperceptible

Physemocecis ulmi: gall on Ulmus spec.

somewhat older gal

Physemocecis ulmi: gall on Ulmus spec.

underside

Physemocecis ulmi: gall on Ulmus spec.

section through the gall

Physemocecis ulmi: larva in drop of digestive fluid

opened gall with the larva in a drop digestive fluid

Physemocecis ulmi: larva

larva, ventral view

Physemocecis ulmi: old gall on Ulmus spec.

underside of an old, vacated gall

Physemocecis ulmi galls

Ulmus minor, Belgium, Liège, Citadelle, 2.vi.2012 © Jean-Yves-Baugnée

Physemocecis ulmi galls on Ulmus minor

underside of the leaf

Physemocecis ulmi: fresh and old galls

Ulmus sp., Belgium, prov. Namur, Couvin gare, 3.viii.2015 © Stéphane Claerebout: two fresh and four old galls

Physemocecis ulmi: larva in its gall

larva in the gall

bovenzijde

Ulmus glabra, Nieuwendam, 20.vii.1999, upper side

teepee

the lower surface has an opening, closed by a cone of elongated epidermis cells

vacated

lower side of a vacated gall

gall

Larva solitary, white, in a single generation per year. Pupation in the ground.

host plants

Ulmaceae, monophagous

Ulmus glabra, laevis, minor & subsp. canescens.

larva

Physemocecis ulmi: spatula

prosternum with spatula (from Möhn, 1955a)

synonyms

Oligotrophus ulmi.

references

Barnes (1951a), Béguinot (2002a, 2006b, 2012a), Bruun (2015a), Buhr (1965a), Dauphin & Aniotsbehere (1997a), Gagné (2010a), Kieffer (1909a), Kowalski (2004a) , Lambinon Schneider & Feitz (2012a), Möhn (1955a), Redfern & Shirley (2011a), Roskam (2009a), Roskam & Carbonnelle (2015a), Simova-Tošić & Skuhravá (2001a), Simova-Tošić, Skuhravá & Skuhravý (1996a, 2000a, 2004a, 2007a), Simova-Tošić, Skuhravá, Skuhravý & Postolovski (2007a), Skrzypczyńska (2007a), Skuhravá & Skuhravý (1988a, 1994a,b, 1997a,b, 1999a,b, 2005c, 2006a, 2007a, 2008a, 2010a, 2012a), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý, Dončev & Dimitrova (1991a, 1992a), Skuhravá, Skuhravý & Hellrigl (2001a), Skuhravá, Skuhravý & Jørgensen (2006a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý & Neacsu (1972a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a), Sylvén (1983a), Tomasi (2014a).

mod 11.xi.2019