Psylliodes laticollis Kutschera, 1860
Taxonomy: Polyphaga > Chrysomeloidea > Chrysomelidae > Psylliodes > Psylliodes laticollis
Description
Size: 2.8-3.6mm
Basic colour: Dark blue, sometimes with a purple tinge
Pattern colour: None
Number of spots: None
Pronotoum: As basic colour. Usually with rounded front angles slightly protruding at the front edge (compare with P. napi)
Leg colour: Yellow-orange, hind femora darkened.
Confusion species: Psylliodes napi
Basic colour: Dark blue, sometimes with a purple tinge
Pattern colour: None
Number of spots: None
Pronotoum: As basic colour. Usually with rounded front angles slightly protruding at the front edge (compare with P. napi)
Leg colour: Yellow-orange, hind femora darkened.
Confusion species: Psylliodes napi
SW Palaearctic, including Macaronesia and North Africa.
Biology
Status: Widely scattered
Habitat: Various
Host plant: Usually on water-cress Rorippa nasturtium-aquaticum
Overwintering: As adults in moss and grass tussocks
Food: Adults on leaves, larvae within stems or as miners in leaf-stalks (petioles)
Other notes: Adults parasitised by a braconid wasp, probably Perilitus sp. Dissection of aedeagus may be needed to separate from P. napi.
Habitat: Various
Host plant: Usually on water-cress Rorippa nasturtium-aquaticum
Overwintering: As adults in moss and grass tussocks
Food: Adults on leaves, larvae within stems or as miners in leaf-stalks (petioles)
Other notes: Adults parasitised by a braconid wasp, probably Perilitus sp. Dissection of aedeagus may be needed to separate from P. napi.
Articles
Ramsay, A.J. (2003). A further Scottish record of Psylliodes laticollis Kutschera (Chrysomelidae). The Coleopterist 12(3): 110.
Ewing, A.W. (1999). Psylliodes laticollis Kutschera (Chrysomelidae) from Aberdeenshire. The Coleopterist 8(3): 100.