Ophiomyia maura

(Meigen, 1838)

Ophiomyia maura is a leaf-mining fly in the Agromyzidae. The creates distinctive linear white mines on the upper leaf surfaces of plants in the Aster. Larvae feed selectively on palisade parenchyma tissues, exhibiting complex mining patterns that serve defensive functions against . The species has been documented from Japan, Alaska, and Manitoba, with European records from Denmark, Norway, and Sweden.

Ophiomyia maura by (c) Even Dankowicz, some rights reserved (CC BY), uploaded by Even Dankowicz. Used under a CC-BY license.

Stellwaag 00091a01 by Klaus Rassinger (Museum Wiesbaden). Used under a CC BY-SA 4.0 license.

Pronunciation

How to pronounce Ophiomyia maura: /ˌɒfiəˈmaɪə ˈmɔːrə/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Mines appear as white linear tracks on upper leaf surfaces, initially following leaf margins before moving to inner leaf areas. Mine patterns feature cross structures and branches with measurable fractal dimension. Larvae feed on a single layer of palisade parenchyma , avoiding midrib and lateral . occurs on the lower leaf surface.

Images

Habitat

Deciduous -dominated sites with Aster plants. In Japan, studied in an 8×10 m² site at National Institute for Basic , Okazaki City, Aichi Prefecture.

Distribution

Japan; Alaska to Manitoba, North America; Denmark, Norway, Sweden in Europe. Vermont, USA.

Seasonality

Late April to November in Japan, with four per year. Activity associated with abundance of new leaves.

Diet

Palisade parenchyma tissues of Aster leaves. Larvae selectively feed on marginal leaf areas where nitrogen content is higher than inner leaf portions.

Host Associations

Aster microcephalus var. ovatus - Primary in Japanese studies
Aster ageratoides subsp. ovatus - for spatial distribution studies
Solidago flexicaulis - True goldenrod , North America
Solidago altissima - True goldenrod , North America

Life Cycle

Larvae mine leaves for approximately two weeks. Initial feeding occurs along leaf margins for 4-5 days toward the leaf base, then proceeds along margins to inner leaf areas. occurs on the lower leaf surface after approximately two weeks of larval development. Four per year at the Japanese study site.

Behavior

lifestyle restricted to leaf mines. Solitary occurrence on both leaf and plant . Females preferentially oviposit in newly emerged leaves. Defensive mining strategies include: (1) increased mine complexity with cross structures that confuse tracking , and (2) marginal mining for through background matching against leaf edges.

Ecological Role

Herbivorous insect subject to by idiobiont , which constitute the primary mortality factor and majority of the parasitoid . Serves as for parasitoid , with idiobiont parasitoids being superior competitors to koinobiont parasitoids.

More Details

Mine Complexity and Defense

Fractal dimension of mines increases with mine length, creating cross structures that reduce risk by confusing tracking .

Spatial Distribution Patterns

Among-plant distribution follows Poisson distribution early in season, becoming weakly clumped later. Within-plant vertical distribution shifts from middle to upper leaves during plant development as mined leaves move downward with of new growth.