Loewiola centaureae (Löw, 1875)

on Centaurea

Loewiola centaureae: gall on Centaurea jacea

Centaurea jacea, Belgium, prov. Antwerp, Meerhout © Carina Van Steenwinkel

Loewiola centaureae: gall on Centaurea jacea

here also the gall itself is violet in colour

Loewiola centaureae: gall on Centaurea jacea

underside of a leaf; one of the galls shows an exit hole.

Loewiola centaureae: gall on Centaurea jacea

Centaurea jacea, België, prov Namen, Nismes, RN les Abannets © Stéphane Claerebout

Loewiola centaureae: gall on Centaurea jacea

detail

Loewiola centaureae: larva

larva

gall

Main and lateral veins with oval swellings, protruding at both sides, up to 5 mm long, surrounded by a yellow or purple margin. Larvae solitary, yellow. Two or three generations, hibernation and pupation in the ground.

hostplants

Asteraceae, monophagous

Centaurea decipiens, jacea & subsp. angustifolia + gaudinii + weldeniana, nigrescens, phrygia, scabiosa & subsp. sadleriana, sphaerocephala, stoebe, subjacea, thuilleri.

Béguinot (2002h) adds: Cyanus montana.

larva

Loewiola centaureae: spatula

spatula with papillae (from Möhn, 1955a)

notes

when the gall occurs in the midrib, easily confusion may arise with Isocolus fitchi; that species has white larvae without an eye patch (Sébastien Carbonnelle, in litt.)

references

Béguinot (2002a,h), Bruun (2015a), Buhr (1964b), Dauphin & Aniotsbehere (1997a), Gagné (2010a), Houard (1909a), Lambinon Schneider & Feitz (2012a), Ludwig (1974a), Möhn (1955a), Redfern & Shirley (2011a), Roskam (2009a), Roskam & Carbonnelle (2015a), Sánchez, Skuhravá & Skuhravý (2012a), Simova-Tošić, Skuhravá & Skuhravý (1996a, 2000a, 2004a, 2007a), Skuhravá & Skuhravý (1994a, 1997a, 1999a, 2007a, 2010a,b), Skuhravá, Skuhravý & Buhr (2013a), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý & Jørgensen (2006a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý & Neacsu (1972a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a), Tomasi (2012a, 2014a).

mod 18.ix.2018