Philorhizus sigma (Rossi, 1790)
Taxonomy: Adephaga > Carabidae > Philorhizus > Philorhizus sigma
Images
Source:
John Walters
Source:
Lech Borowiec
Description
Size: 3.4-4.4mm
Basic colour: Brown
Pattern colour: Head black, pronotum bright reddish, elytra straw-coloured with a dark sutural mark and transverse band leaving apices completely pale.
Pronotoum: Bright reddish. Transverse rather contracted basally.
Leg colour: Pale.
Confusion species: Philorhizus vectensis
Basic colour: Brown
Pattern colour: Head black, pronotum bright reddish, elytra straw-coloured with a dark sutural mark and transverse band leaving apices completely pale.
Pronotoum: Bright reddish. Transverse rather contracted basally.
Leg colour: Pale.
Confusion species: Philorhizus vectensis
Biology
Status: Scarce. Local in Norfolk, Yorkshire and Lincolnshire.
RDB Category: Vulnerable
Habitat: Marshes, fens and at the margins of standing fresh water.
Other notes: Elytra elongate, widened apically and with shoulders completely rounded; strias very fine; wings usually absent.
RDB Category: Vulnerable
Habitat: Marshes, fens and at the margins of standing fresh water.
Other notes: Elytra elongate, widened apically and with shoulders completely rounded; strias very fine; wings usually absent.
Articles
Allen, A.J. & Duff, A.G. (2014). Philorhizus sigma (Rossi) (Carabidae) rediscovered in South Hampshire. The Coleopterist 23(2): 53.