Phytomyza gymnostoma

Family

Subfamily

Genus

Species

Phytomyza gymnostoma Loew, 1858

Mine

Feeds just below the surface, with often several larvae per plant. The plant becomes weak and softens due to the damage caused. Pupariation within the plant or in the ground.

Host Plants

• Allium

Confusion Species

N/A.

Recording Grade

2

National Status

Local.

Puparium

Reddish, 3.3 mm in male to 4.2 mm in female.

Adult

Head: frons broad, 2.5x width of eye; 2 ors, 2 ori; orbital setulae numerous; jowls broad, 2/5-1/2 height of eye; third antennal segment round, with fringe of whitish pubescence; broad epistoma present.
Mesonotum: 3+1 dc; acr in 3 rows.
Wing: 2.6-3.1 mm; second costal section 2x length of fourth.
Colour: frons and jowls yellow, hind margin of eye black to base of vti; face grey; palps black; first antennal segment yellowish, second and third black; mesonotum and scutellum matt grey; legs black, all knees narrowly yellow.