FIG. 3. — A-E, Tetracanthella fusca n in Three new species of Tetracanthella (Collembola, Isotomidae) from western Europe

FIG. 3. — A-E, Tetracanthella fusca n. sp.; A, ocelli (pars) and PAO; B, dorsal chaetotaxy of Abd. II-VI; C, furcal area; D, dorsal plates in axial area near p1-chaetae of Abd. IV; E, chaetotaxy of Tita III; F, T. similis Deharveng, 1987, dorsal chaetotaxy of Abd. III-IV. In B and F, axial chaetae and s-chaetae are marked. Abbreviations: Abd. II-VI, abdominal tergites II-VI; PAO, postantennal organ; Tita III,