Trichoniscus alemannicus Verhoeff, 1917

Boeraeve, Pepijn, Arijs, Gert, Segers, Stijn, Smedt, Pallieter De, Spinicornis & Utm, Belgium. Every grid cell of the, 1908, Habitat and seasonal activity patterns of the terrestrial isopods (Isopoda: Oniscidea) of Belgium, Belgian Journal of Entomology 116, pp. 1-95 : 36

13. Trichoniscus alemannicus Verhoeff, 1917

( Fig. 15 , Map 13 , Table 15)

Trichoniscus alemannicus is a very rare and only recently discovered species in Belgium ( DE SMEDT et al., 2016a). The species is morphologically almost similar to T. provisorius ( Fig. 11 h ) and T. pusillus . Based on only six observations, the main habitat of this species is deciduous forest and mostly close to water ( Table 15). There is only one observation in anthropogenic habitat, on a graveyard, but this location was surrounded by deciduous forest.

The few observations do not allow to evaluate the species seasonal activity patterns ( Fig. 15 ).

Figures

Map 13. Distribution map for Trichoniscus alemannicus.

Fig. 15. Corrected number of observations per two-month period for Trichoniscus alemannicus (N = 7).

Fig. 11. a, Ligidium hypnorum; b, Androniscus dentiger; c, Haplophthalmus mengii; d, Hyloniscus riparius; e, Metatrichoniscoides leydigii; f, Trichoniscoides albidus; g, Trichoniscoides helveticus; h, Trichoniscus provisorius.