The pale to dark brown workers and brownish black males are very small (1-2mm and 1.5mm-2mm long, respectively). Queens are relatively large at 3-4mm long (Collingwood 1979).
Plagiolepis pallescens occurs in the Channel Islands, but is absent from England, Wales, Scotland and Ireland. Elsewhere, it occurs in central and eastern Europe, its range extending south into Italy and Greece.
Status (in Britain only):
The Channel Islands are not included in assessments of conservation status either in Shirt (1987) or by Falk (1991).
Plagiolepis pallescens may be found in warm, dry, open areas where it nests under stones and in rock crevices. In the Channel Islands it colonises coastal cliffs.
Nests contain winged sexuals between June and August (Seifert 1996). Nesting biology and foraging behaviour Colonies usually have several queens. Workers tend homopterans for honeydew and forage for nectar. They follow trails to permanent food sources (Seifert 1996).
A draft key to the British DEBS (Dryinidae, Embolemidae & Bethylidae) by Michael Archer. Michael comments "I have produced these keys via Perkins although I am grateful for the help I have received from Olmi". Note: Olmi authored the key work to Fenno-Scandian DEBS (Olmi, 1994).
I am working on a second edition of my Naturalists' Handbook 24-Ants. In the new ones, the colour paintings and line drawings (except for keys) are being replaced by photos. I am hoping to take most of these and I am wondering if anyone is prepared to help me with precise locations of nests etc. for the more Southern and rarer species. I live in Yorkshire so have access to only about 17 species in my own county. I will send a list of what I need or post it on here later. Any information would be helpful, but I have had very good experiences with lat./long.