Desoria tigrina

Description

Desoria species are covered in fine setate but unlike other Isotomids have no few macrosetate. Desoria tigrina is a grey-brown species with a dosal stripe plus two lateral stripes. The long setae on abdomen 5 are taxonomically important - to distinguish between Desoria violacea and D. tigrina, in addition to colour, find the ratio of the longest seta on abd. 5 to the length of the segment.  For Desoria tigrina this ratio is <0.7, while Desoria violacea has longer seta with a ratio around 1.1. 

Desoria tigrina characters: 
- No macrosetae
- Ocelli B-D-E aligned
- Mucro with 4 teeth and no lateral seta
- Long setae on Abd5 <0.7 length of Abd5

Identification difficulty
Habitat

This species has a tendency towards human-impacted soils or habitats rich in organic matter.

When to see it

All year round.

UK Status

Common and widespread. 

VC55 Status

Status in Leicestershire and Rutland unknown, under recorded. 

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Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map