Armadillidium pictum Brandt, 1833

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 : 60

24. Armadillidium pictum Brandt, 1833

( Fig. 2 e , Fig. 28 , Map 24 , Table 26)

Armadillidium pictum is almost exclusively found in forests (96.3 % of habitat records, see table 26). The species is common south of the rivers Sambre and Meuse but rare to the north ( Map 24 ). It shows comparable habitat preferences as A. pulchellum , however both species rarely occur together and the reason for this is not known. This species is regularly found on the bark of trees where it hides during daytime between fissures, mosses and cracks.

The phenology diagram shows a remarkably low number of records in May–June ( Fig. 28 ); although the species has a relatively high drought tolerance ( DIAS et al., 2013). The phenology pattern is therefore difficult to explain and more data is needed.

Figures

Map 24. Distribution map for Armadillidium pictum.

Fig. 2. a, Ligia oceanica; b, Haplophthalmus danicus; c, Miktoniscus patience; d, Trichoniscus pygmaeus; e, Armadillidium pictum; f, Armadillidium vulgare; g, Porcellio dilatatus; h, Porcellio laevis.

Fig. 28. Corrected number of observations per two-month period for Armadillidium pictum (N = 62).