Tetracanthella bichaeta, Potapov & Deharveng, 2005

Potapov, Mikhail & Deharveng, Louis, 2005, Three new species of Tetracanthella (Collembola, Isotomidae) from western Europe, Zoosystema 27 (1), pp. 85-93 : 87

publication ID	https://doi.org/ 10.5281/zenodo.5390855
DOI	https://doi.org/10.5281/zenodo.5467617
persistent identifier	https://treatment.plazi.org/id/02788780-A941-B815-4F62-71A6FE00F914
treatment provided by	Marcus
scientific name	Tetracanthella bichaeta
status	sp. nov.

Treatment

Tetracanthella bichaeta View in CoL n. sp.

( Fig. 1 View FIG )

TYPE MATERIAL. — Switzerland. Les Diablerets , 2550 m, lichens and mosses on limestone rocks, 1.VIII.1982, L. Deharveng leg. (sample # SUI3 View Materials ), holotype and 2 paratypes ( MNHN) ; 1 paratype ( MSPU) .

ETYMOLOGY. — The specific name is given for the unusual presence of two clavate tenent hairs on tibiotarsi of the first pair of legs.

DISTRIBUTION. — Only known from the type locality.

DESCRIPTION

Body length 1-1.2 mm. Body rather broad. Coloration dark, including antennae. Two kinds of dorsal plates: many small polygons (much smaller than mesochaeta socket) regularly scattered among larger ones (roundish, slightly smaller than mesochaeta socket) ( Fig. 1G View FIG ); polygons not larger on Abd. IV or V. Canals between polygons well marked. Smooth fields absent. Dorsal mesochaetae of medium size, longer in posterior rows of tergites. Mesochaetae not shortened in axial part of tergites: Abd. IV with p3 subequal to p1. Macrochaetae long and acuminate, curved at apex. 8+8 ocelli, G and H reduced (dcA/dcH = 1.5- 1.7). PAO short, about two times as long as the diameter of ocellus A ( Fig. 1A View FIG ). Chaeta s’ of ant. III in males absent. Three prelabral chaetae. Outer maxillary lobe with two sublobal hairs. Five chaetae between medial line and pc3 on head. Frontal chaeta ap present.