Pseudosinella alba

Pseudosinella alba is widespread and very common in leaf litter, soil and organic matter throughout the UK. Each eye is comprised of two ocelli which are close together in a single spot of pigment on either side of the head - difficult to resolve unless the pigment has been cleared. The claw has prominent teeth and the body is covered in scales, also present on the dens. The mucro has two teeth. Of the six UK species of Pseudosinella, the other common non-coastal UK species Pseudosinella immaculata is blind. Pseudosinella alba can be distinguished from the similar species Heteromurus nitidis because in Heteromurus, abd4 is less than 2 times the length of abd3 whereas in P. alba abd4 is much longer than abd3.