Description

Description. Male with ring 12 paranota width ca 1.4 mm. Live colour not known; in alcohol decoloured. As for T. armatum in most non-gonopod details, but overall widths tergite 6> 5> 4> (3,2, head)> collum, antennomere 3 longest, ring 12 paranota 1.25 × as wide as prozonite, leg 6 tarsus 1.4 × as long as femur and femur longer than prefemur. Ring 2 pit circular with well-defined rim. Th ree barely detectable transverse rows of large, low tubercles on metatergites; just visible on holotype in lateral view with reflected light, not as well developed as in other Tasmaniosoma spp., e. g. T. hickmanorum sp. n. Leg 6 sternal tab short with brush of fine setae; no leg 7 tab; no setae on anterior margin of ring 6 sternite. Gonopod telopodite (Fig. 20) slender, tapering slightly distally, curved posteriorly, slightly constricted near base, with short, shelf-like basal extension posteriorly. Divided at ca 3 / 4 telopodite height into tight cluster of four processes: (a) slender, rod-like, slightly sinuous, medial solenomere directed posterodistally; (b) blade-like, mediolaterally flattened, apically acute process arising just anterior and basal to solenomere and curving posteriorly; (c) mediolaterally flattened central process directed posteriorly, the basal portion of the broad apex extending posterobasally as finger-like extension; (d) broad, anteroposteriorly flattened lateral process, the medial corner of wide, truncate apex extending just posterior to solenomere. Two groups of sparse, fine setae: posterobasal group reaching to ca 1 / 4 telopodite height, and longitudinal medial tract extending from ca 1 / 4 to ca 2 / 3 telopodite height. Prostatic groove running on medial surface more or less directly to solenomere base. Female not yet recognised.

Common Names

Taxonomic Hierarchy

Kingdom: Animalia

Phylum: Arthropoda

Class: Diplopoda

Order: Polydesmida

Family: Dalodesmidae

Genus: Tasmaniosoma

Species: Tasmaniosoma laccobium Mesibov, 2010