Ozirhincus millefolii (Wachtl, 1884)

on Achillea, ? Santolina

Achillea millefolium, Norway, Kaholmene, 11.vii.2019 © Hallvard Elven: exuviae

Achillea millefolium, Norway, Kaholmene, 11.vii.2019 © Hallvard Elven: female

Achillea millefolium, Norway, Gressholmen, 3.v.2019 © Hallvard Elven: male

Achillea millefolium, Norway, Gressholmen, 3.v.2019 © Hallvard Elven: male

Achillea millefolium, Norway, Gressholmen, 3.v.2019 © Hallvard Elven: male

Achillea millefolium, Belgium, prov. Limbourg, Dal van de Grensmaas, Hochter Bampd-Herbicht, 1.ix.2019 © Carina Van Steenwinkel: four galled florets

the outline of the larve is difficult to recognise

larva in the gall

larva

fully developed larva; the larva has completely digested the endosperm of the seed, but the seed coat and the fruit wall remain unaffected.

spatula of the larva

the papillae around the spatula (the spatula itself is only incompletely in focus)

parasitoid larva

spatula and adjacent papillae (from Dorchin ao)

gall

The solitary larva develops in the slightly swollen fruitlet. Two or three generations. Hibernation and pupation in the gall.

hostplants

Asteraceae,Anthemideae, narrowly oligophagous

Achillea arabica, biserrata, millefolium, nobilis & subsp. neilreichii, ptarmica; Santolina.

In the revision by Dorchin ao (2015a) only Achillea millefolium and ptarmica are cited as host plants.

larva

prosternum with spatula (from Möhn, 1955a)

synonyms

Clinorrhyncha millefolii.

notes

larvae and pupae are described by Dorchin ao (2015a).

references

Bruun, Jørgensen & Skuhravá (2012a), Buhr (1964b), Burton, Carbonnelle, Ellis & Schneider (2019a), Dauphin & Aniotsbehere (1997a), Dorchin, Astrin, Bodner & Harris (2015a), Gagné (2010a), Grosscurt (2022b), Kieffer (1901b), Mirumian (2011a), Möhn (1955a), Redfern & Shirley (2011a), Roskam (2019a), Roskam & Carbonnelle (2015a), Simova-Tošić, Skuhravá & Skuhravý (1996a, 2000a), Simova-Tošić, Skuhravá, Skuhravý & Postolovski (2007a), Skuhravá (1989a), Skuhravá, Bayram, Çam ao (2005a), Skuhravá & Skuhravý (1994a, 1997a,b, 1999a,b, 2005c, 2008a, 2010a, 2012a, 2021a: 26), Skuhravá, Skuhravý, Blasco-Zumeta & Pujade-Villar (2006a), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a), Tomasi (2014a), Wachtl (1884a).