Leiobunum blackwalli is a species of harvestman. It is found in Europe, but has been introduced to British Columbia in Canada and Seattle in the United States.
Description Leiobunum blackwalli grows to 6 mm in females and 4 mm in males.Jones, Dick (1989) A Guide to Spiders of Britain and Northern Europe (revised edition), Hamlyn, , p. 314 The second pair of legs grow to 50mm. Similar in appearance to L. rotundum, the abdomen is broader at the rear and the dark marking broader at the rear than the front with a sharper cutoff than L. rotundum, and the palps are pale.
Distribution This harvestman is widespread throughout Britain and Europe, though less common than L. rotundum.Savory, Theodore (1945) The Spiders & Allied Orders of the British Isles, Warne, p. 163 As at 2023 this species was regarded as newly introduced to British Columbia in Canada and Seattle in the United States.
Habitat It is usually found in woods or damp places, and also in gardens.Pinto-da-Rocha, Ricardo, Machado, Glauco & Giribet, Gonzalo (2007) Harvestmen: The Biology of Opiliones, Harvard University Press, , p. 301
References
External links Leiobunum blackwalli, Spider and Harvestman Recording Scheme website