*tuberculata (Moniez, 1891)
Kalaphorura burmeisteri is a distinctive species (up to 3.1 mm in length) found under fallen branches and among leaf litter (Figs. 1 & 2). It is often recorded during the winter months and is active under snow. With the exception of records from Wensley, Yorkshire by Brown (1918), and Edinburgh by Bagnall (1937), all localities are south of a line drawn through Anglesey and The Wash. Most authors regard Kalaphorura tuberculata (Moniez, 1891) as a junior synonym of Kalaphorura burmeisteri. Kalaphorura bearei (Bagnall, 1937) (wrongly placed in this genus by Salmon (1959)) is a species of Onychiurus (Steve examined the holotype), but its exact identity is uncertain.
The anal spines are prominent (Fig. 3), there is a vestigial furca consisting of two small bumps (Fig. 4) and the post-antennal organ consists of two rows of elongate vesicles (Fig. 5). The empodium of the foot is expanded at the base (Fig. 6) and there are two pseudocelli near the base of each antenna (Fig. 7).
Unusually among the white 'Onychiurids', this species may be recognised visually by its distinctive shape. The combination of characters to look for are:
1. a 'Michelin-man' habitus (the body segments distinctly rounded laterally in dorsal aspect) 2. a proportional large head with distinctly clublike antennae 3. a distinctly tuberculate cuticula (even visible at 5x magnification) 4. abd.6 distinctly elongated and longer than abd.5 and bearing long anal spines
See for example this picture, taken in Worthing, Sussex, 24-12-2006 by Brian Valentine.