Phytomyza chaerophylli

Family

Subfamily

Genus

Species

Phytomyza chaerophylli Kaltenbach, 1856

Mine

Upper surface corridor, usually following the leaf margin, in smaller leaves, a secondary blotch may be formed. Frass in two rows, untidy. Larvae can be found feeding during the winter months. Pupariation external.

Host Plants

• Anthriscus
• Bifora
• Carum
• Chaerophyllum
• Conium
• Conopodium
• Daucus
• Myrrhis
• Orlaya
• Selinium
• Sison
• Tordylium
• Torilis

Confusion Species

Phytomyza angelicastri, Phytomyza conii, Phytomyza obscurella, Phytomyza pastinacae, Phytomyza thysselini. On Conium, the mine is identical to that of Phytomyza coniopais; on Chaerophyllum the mine is identical to Phytomyza chaerophylliana [both species not known from Great Britain & Ireland]. A third species not known from Great Britain & Ireland, Phytomyza aurei, also forms identical mines [on Chaerophyllum and Conium].

Recording Grade

2

National Status

Common.

Puparium

Black, shining, with posterior spiracles possessing 16-20 bulbs.

Adult

Head: frons broad, 1.5-2x width of eye, not projecting above eye in profile; 2 ors (upper weak but sometimes entirely absent), 1 ori (weak lower sometimes present); third antennal segment small, round.
Mesonotum: 3+1 dc; acr in 4 rows.
Wing: 2-2.5 mm; second costal section normally just less than 4x length of fourth.
Colour: frons matt black, possibly slightly brownish, orbits more greyish; all antennal segments black; mesonotum matt, greyish-black; legs black, only fore-knees distinctly yellow, tibiae and tarsi yellowish.