Phytomyza calthophila

Family

Subfamily

Genus

Species

Phytomyza calthophila Hendel, 1931

Mine

A long, linear corridor, initially pale green, later turning brownish. The corridor is not contorted, with the sides of the corridor parallel. Frass in increasingly sized grains. Pupariation external.

Host Plants

• Caltha

Confusion Species

Phytomyza calthivora.

Recording Grade

3

National Status

Nationally Scarce A.

Puparium

Brown, posterior spiracles greatly enlarged, each possessing up to 40 bulbs.

Adult

Head: frons 2x width of eye, not projecting above eye in profile; 2 equal ors (upper sometimes marginally weaker), 1 ori; third antennal segment rounded; proboscis short, normal.
Mesonotum: 3+1 dc; acr in 3-5 rows.
Wing: 2.1 mm; second costal section 2x length of fourth.
Colour: frons brown, darker, almost black in lower half; orbits slightly paler; lunule grey; jowls brown, face and antennae black; mesonotum grey, weakly shining; sides of thorax blackish-grey, upper margin of mesopleura only narrowly ochrous; legs entirely black; squamae grey, margin and fringe black; wings clear, hyaline.