About Leiobunum blackwalli Meade, 1861
Leiobunum blackwalli Meade, 1861 is a species of harvestman. Females grow up to 6 mm long, and males grow up to 4 mm long. The second pair of its legs can reach 50 mm in length. It is similar in general appearance to Leiobunum rotundum, but it can be distinguished by several traits: its abdomen is broader toward the rear, its dark abdominal marking is broader at the rear than at the front, and this marking has a sharper cutoff than the marking seen on L. rotundum, and its palps are pale in color. This harvestman is widespread across Britain and Europe, though it is less common there than L. rotundum. As of 2023, this species is considered newly introduced to British Columbia, Canada, and Seattle, Washington, United States. It is most often found in woodland areas, damp locations, and also in gardens.