Phytomyza obscura Hendel, 1920

on Clinopodium

Phytomyza obscura: vacated mines on Clinopodium menthifolium

Clinopodium menthifolium, France, dép. Haute-Marne, Auberive © Jean Béguinot: vacated mines

mine

The mine, that may be upper- or lower-surface, generally starts with a tight spiral. Its loops are so tight that the leaf tissue dies off and turns red; nevertheless the corridor remains well visible. Later the corridor widens and finally a large secondary blotch develops around to the inital spiral. Frass at first in two rows of grains, later in pearl chains. Feeding lines very clear. Pupation now within, then outside the mine.

hostplants

Lamiaceae, monophagous

Clinopodium menthifolium, nepeta subsp. glandulosum, vulgare.

In the literature a number of other plants are mentioned: Galeopsis pubescens, speciosa, tetrahit; Mentha; Nepeta; Origanum; Lycopus europaeus, and even Symphytum (Boraginaceae). According to the study by Nowakowski (1959a) none of these are plausible as hostplants.

phenology

Larvae between May and August (Hering, 1957a).

BENELUX

Not known from the Benelux countries (Fauna Europaea, 2008).

distribution within Europe

From the UK to Italy and Bulgaria, and from Lithuania to the Iberian Peninsula (Fauna Europaea, 2008).

larva

Described by de Meijere (1926a); rear spiraculum with about 13-15 papillae in three quarters of a circle.

puparium

Shining dark brown (Hering, 1924a); it often sticks to the leaf underside.

synonyms

Phytomyza hedickei Hering, 1927.

references

Beiger (1955a, 1960a, 1965a, 1970a, 1975a, 1979a), Buhr (1932a, 1941b), Černý (2011a), Černý & Merz (2006a), Černý & Vála (1999a), Drăghia (1968a), Dreger & Myssura (2005a), Hering (1921b, 1924a,b, 1927b, 1931a, 1936b, 1957a, 1967a), Huber (1969a), Kvičala (1938a), Maček (1999a), Manning (1956a), de Meijere (1926a), Michna (1975a), Nowakowski (1959a), Pakalniškis (2000a), Robbins (1991a), Skala (1951a), Skala & Zavřel (1945a), Sønderup (1949a), Spencer (1965a, 1972a), Starý (1930a), Stolnicu (2007a), Zoerner (1969a).

mod 31.x.2017