Leiobunum blackwalli

Sometimes I see a specimen of Leiobunum blackwalli in my garden. The females of this species have a dark saddle that widens towards the back part of the abdomen and then terminates abruptly: Leiobunum blackwalli femaleLeiobunum blackwalli femaleLeiobunum blackwalli femaleThe males do not have such a pronounced saddle, but are easily distinguished from L. rotundum -which they resemble very much- by the pale ring around each eye where L. rotundum has an entirely dark/black eye hill. (Click to enlarge pictures)

Leiobunum blackwalli maleLeiobunum blackwalli maleL. blackwalli is often found in deciduous forest with dense undergrowth, along forest edges and waterways, in open fields and along the coast. In cities and villages L. blackwalli is much less common than L. rotundum, but not rare either. It is thought that L. blackwalli has decreased in numbers after the invasion of Opilio canestrinii (see last post), but unfortunately its distribution is not monitored well enough to know for sure.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s