Bactericera trigonica Hodkinson, 1981

on Daucus, etc. ?

parasite

Larvae ± 2 mm, oval, strongly flattened, surrounded by a shining “nimbus” of wax threads, at the underside of the leaf, sometimes in a shallow depression. Several generations; hibernation as adult insect in conifers.

hostplants

Apiaceae, ? Asteraceae, ? polyphagous

Achillea ligustica; Daucus carota; Ferulago campestris; Sonchus oleraceus.

Daucus is mentioned most frequently, but the literates suggests that the species actually is polyphagous.

larva

Burckhardt & Freuler describe the larva and present a key (for adults and 5th instar larvae) of the psyllids occurring on Daucus.

synonyms

Trioza trigonica.

references

Burckhardt (2002a), Burckhardt & Freuler (2000a), Conci, Rapisarda & Tamanini (1996a), Halperin, Hodkinson, Russell & Berlinger (1982a), Hellrigl (2004a), Malenkovský & Lauterer (2012a).

mod 22.iv.2018