It is very likely that we're looking at a
Paraphrynus laevifrons, Phrynidae, ARACHNIDA!! In other words, it's a tailless whip-scorpion. Who'd thunk it! My own attempt at identification landed in a completely wrong genus, therefore I'm grateful to the guys at Panarthroda.de, Heiko Wehner and Frederic Schramm. Frederic, who ID-ed my critter, is a fellow cellular biologist, who dedicates his spare time to amblypygi. Danke sehr, Frederic!!