Wachtliella stachydis (Bremi, 1847)
on Stachys
Stachys sylvatica, Belgium, prov. Luxembourg, Paliseul, Fays les Veneurs, vi.2018 @ Sébastien Carbonelle
another specimen
Stachys sylvatica, France, Isère, Rhône-Alpes, Blandin © Arnold Grosscurt
opened gall with larvae
Stachys sylvatica, Belgium, prov. Namur, Viroinval, Oignies-sur-Thiérache, RaveL: the larva is white – larva still young, or inquiline? © Stéphane Claerebout
gall
Groups of larvae in the upwards rolled, discoloured and somewhat swollen leaf margins, and in the swollen, yellowish of reddish flowers buds and disfigured flowers. Bivoltine. The larvae of the summer generation pupate in the gall, those of the winter generation in the soil.
While describing granulata Kieffer writes about the spatula: yellow, lobes obtuse, a bit longer than wide, incision subtriangular, obtuse.
hostplants
Lamiaceae, monophagous
Stachys alpina, palustris, recta, sylvatica.
synonyms
Cecidomyia, Perrisia, stachyidis; Perrisia granulata Kieffer, 1909.
references
Béguinot (2003b, 2005a, 20006b, 2007b), Buhr (1965a), Dauphin & Aniotsbehere (1997a), Docters van Leeuwen (1936a), Gagné (2010a), Gagné & Jaschhof (2014a), Houard (1909a), Kieffer (1891a, 1909a), Koops (2013a), Lambinon, Schneider & Feitz (2001b), Redfern & Shirley (2011a), Roskam (2009a), Roskam & Carbonnelle (2015a), Simova-Tošić & Skuhravá (2001a), Simova-Tošić, Skuhravá & Skuhravý (1996a, 2000a, 2007a), Skuhravá & Skuhravý (1994a, 1997a, 1999a,b), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý, Dončev & Dimitrova (1991a, 1992a), Skuhravá, Skuhravý & Jørgensen (2006a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý & Neacsu (1972a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a), Stănescu (2009a), Tomasi (2014a).