FOREIGN DISTRIBUTION:—
Europe: Spain; (12).
Trichoniscus roseus Koch. [Plate V.]
1838 Itea rosea Koch (34), part 122, pl. XVI.
1858 Philougria rosea Kinahan (33), pp. 197 and 199, pl. XXIII., fig. 3.
1858 Philougria rosea Bate and Westwood (1), p. 460.
1898 Trichoniscus roseus Sars (59), p. 163, pl. LXXIII., fig. 1.
The third British species of Trichoniscus is of a deep pink colour and has a light yellow stripe down the back (in some habitats the animals are said to be quite white). Arranged in transverse rows upon the body are large tubercles, each of which under strong magnification will be found to end in a tiny hair. It is distinguished from Trichoniscus pusillus by the larger size of its body, which is also comparatively broader, and from Trichoniscus vividus by the four joints of the flagellum of its antennæ which latter have strong bristles upon them. In the former species there are five or more joints to the flagellum and the antennæ, though hairy, lack the bristles. Trichoniscus roseus is to be looked for in old gardens.
BRITISH LOCALITIES:—
England: Warley; (W.M.W.): Maldon; (W.M.W. from R.M.): Stanmore; Hanwell; Ealing; Wimbledon; (W.M.W.): Berkhamsted; Torquay; (Norman, 49): Plymouth; (Bate and Westwood, 1 and B.M.,): Grassendale, near Liverpool; (R.W.): Newtownards; (R.W., Irish Nat, 1904, p. 260.)
Scotland: Tarbert; (Scot, 68).