Contribution to the knowledge of European Bourletiellidae (Collembola, Symphypleona). III. Description of some species of Heterosminthurus and Deuterosminthurus

Abstract

According to our standard of the appendicular chaetotaxy, the following species are redescribed: Heterosminthurus bilineatus (Bourlet, 1842), H. claviger (Gisin, 1958), H. insignis (Reuter, 1876), Deuterosminthurus bicinctus (Koch, 1840), D. flavus (Gisin, 1946), D. pallipes (Bourlet, 1843), and D. sulphureus (Koch, 1840). Two new species are described: Deuterosminthurus maculatus sp. n. and Deuterosminthurus pleuracanthus sp. n. A discussion is given on the morphology of the claw, which is used to distinguish genera in the family Bourletiellidae. Appendicular chaetotaxic characters are relevant for defining genera, but more difficulty applicable for species distinctions. On the basis of such characters, apomorphies of Heterosminthurus and Deuterosminthurus are emphasized. Setae of body and color pattern are also used for species diagnoses, and a key to European species of Deuterosminthurus is provided.