Leiobunum sp. A


Leiobunum sp. A
Leiobunum sp. A
Leiobunum sp. A
Leiobunum sp. A
Leiobunum sp. A
Leiobunum sp. A

Class Arachnida (Arachnids)
Order Opiliones (Harvestmen)
Family Phalangiidae »
Species Leiobunum sp. A

Body length 5 mm.

A large invasive species of harvestmen which still remains scientfically unidentified. It has extremely long legs, up to 100 mm in length, and an unusual dark metallic green sheen of the dorsal surface, especially in the male.

It can form large congregations on shaded areas of walls of buildings which can be counted in their hundreds. Most likely feeds on a range of invertebrates. Seen June to late December. Associated with stony ground, and found around buildings like houses and on brownfield sites and old industrial land. Mainly seen on walls.

First seen in Worksop, Nottinghamshire, in 2009. Highly invasive, it appears to be slowly spreading with a few records appearing outside of Nottinghamshire. It was first discovered in Europe in the Netherlands in 2004. All efforts to try to determine its possible point of origin have drawn a blank.

Discovered on shed wall, bcak garden, South Staffordshire October 2020 & September 2021. © Peter Hillman.

Species recorded and verified via iRecord.