Description

Description. Male ca 10 mm long, ring 12 paranota width ca 1.0 mm. Live colour not known; in alcohol completely decoloured. Most non-gonopod details as for T. armatum, but antennal sockets separated by ca 2.5 × socket diameter, relative widths tergite 6> (5, head)> 4> (3,2)> collum, ring 12 paranota ca 1.2 × as wide as prozonite, brush setae lacking on femur, gonopod aperture rim not produced. Metatergite (Fig. 3 B) almost completely covered with three transverse rows of ca 12 large, low tubercles, each with small seta near posterior edge. Ring 2 pit not apparent except as slight concavity near anterior margin of ring. Ring 6 sternite Figure | 0. Posterior views of gonopod telopodites in situ of topotypical male paratypes, with solenomere (s) indicated. A Tasmaniosoma barbatulum sp. n., ex QVM 23: 51512 B Tasmaniosoma clarksonorum sp. n., ex QVM 23: 46583. Scale bars: (A) = 0.1 mm, (B) = 0.2 mm. Slight bending of flattened apical process in (A) is a preparation artifact; tip of central branch of central process on right telopodite in (B) is broken off. Portions of the background in (A) have been digitally edited for clarity. (Fig. 5 B) with short leg 6 tab bearing a few fine setae; leg 7 tab long, thickened, with brush of stout setae; a few fine setae on anterior margin of sternite. Gonopod telopodite (Fig. 10 A) subcylindrical with small posterior extension at base, concave distally. Apex slightly produced posteriorly as rounded, thickened ridge, oriented obliquely to telopodite longitudinal axis (medial end of ridge lowest); basal surface of ridge with comb of 15 – 20 stout, pointed, rod-like setae, up to ca 1 / 4 telopodite height in length, directed basally. Solenomere short. cylindrical, acute, arising from medial end of ridge on distal side, directed distally. Telopodite apex with laminate process arising anteromedially; outer edge of process extended distally as long, rounded-truncate tab and medially as short, round-tipped tab, and bearing a small, flattened process arising mid-laterally near laminate process base and directed posterodistally. Anterior surface of telopodite with comb of 5 – 10 stout, pointed, rod-like setae, directed distally and arising in near-longitudinal row, increasing in length distally. A few fine setae posterolaterally near telopodite base and on concave surface of basal extension; ca 6 fine setae in midlength lateral row. Prostatic groove running distally on medial surface of telopodite 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 barbatulum Mesibov, 2010