Metallus lanceolatus (Thomson, 1870)

Metallus lanceolatus: occupied mine on Geum urbanum

Geum urbanum, Belgium, prov. Namur, Hastière par-delà, RN Jean Septroux © Stéphane Claerebout

Metallus lanceolatus mine

Geum urbanum, Nunspeet

Metallus lanceolatus: young larvae in Geum rivale

Geum rivale, UK Lincoln: young larve, in a number that probably is too large to enable all to survive; © Martin Gray

mine

The mine begins with short, rather broad corridor, that often is overrun by the later, large, very transparent full depth blotch. The mine begins somewhere in the centre of the leaf. Frass in many loose grains. Larva pale, venter-upwards in the mine. Pupation external, exit slit in upper epidermis.

host plants

Rosaceae, monophagous

Geum coccineum, macrophyllum, rivale, x tirolense, urbanum.

phenology

Larvae found from June till November; probably two generations (Altenhofer & Pschorn-Walcher, 2003a).

BENELUX

BE recorded (Fauna Europaea, 2008).

NE recorded (Romeijn, 1993a); surprisingly, the species is not listed in van Ooststroom’s (1976a) checklist, although the species is not al all rare.

LUX recorded (Ellis: Kautenbach).

distribution within Europe

From Sweden and Finland to the Pyrenees, Alps and Bulgaria, and from Britain to Russia and the Ukraine (Fauna Europaea, 2008).

larva

synonyms

Entodecta lanceolata; Entodecta, Metallus gei (Brischke, 1883); M. bensoni DR Smith, 1971.

notes

The species is largely parthenogenetic (Romeijn, 1993a).

references

Altenhofer (2003a), Altenhofer & Pschorn-Walcher (2003a), Beiger (1955a, 1960a, 1965a, 1970a, 1979a), Blank ao (1998a), Buhr (1933a, 1941a, 1964a), Chevin, Ellis & Schneider (2011a), Csóka (2003a), Eiseman & Smith (2017a), Haarder & Liston (2018a), Haase (1942a), Hering (1957a), Huber (1969a), Liston (1995b, 2006a), Lorenz & Kraus (1957a), Maček (1999a), Michalska (1970a, 1972a, 1976a), Michna (1975a), Nowakowski (1954a), van Ooststroom (1976a), Pschorn-Walcher & Altenhofer (2000a, 2006a), Robbins (1991a), Romeijn (1993a), Skala & Zavřel (1945a), Sønderup (1949a), Starý (1930a), Stolnicu (2007a, 2008a), Surányi (1942a), Taeger, Blank & Liston (2006a), Taeger ao (1998a), Ureche (2010a), Viramo (1969a), Wahlgren (1944a, 1951a, 1963a), Zoerner (1969a).

mod 18.ii.2019