Victoriombrus seminudus, Mesibov, 2004

Mesibov, Robert, 2004, A new genus of millipedes (Diplopoda: Polydesmida: Dalodesmidae) from wet forests in southern Victoria, with brief remarks on the Victorian Polydesmida, Memoirs of Museum Victoria 61 (1), pp. 41-45 : 45

publication ID	https://doi.org/ 10.24199/j.mmv.2004.61.2
DOI	https://doi.org/10.5281/zenodo.10870749
persistent identifier	https://treatment.plazi.org/id/03DC87B7-FF82-587D-56ED-FCCB47A4FCFC
treatment provided by	Felipe
scientific name	Victoriombrus seminudus
status	sp. nov.

Treatment

Victoriombrus seminudus View in CoL sp. nov.

Figures 1 View Figure 1 , 4 View Figure 4 , 5 View Figure 5 , 6 View Figure 6 (map)

Material examined. Holotype. Male, Australia, Victoria. Myrtle Gully Reserve , 3.4 km WSW of Mt Donna Buang, 37°43'S, 145°38'30''E, pitfall 29.xi.1994 – 20.i.1995, G. Milledge, Nothofagus forest, sample NOH-1840, NMV K-8852. GoogleMaps

Paratypes. 1 male, 7 females, 1 stadium 7 juvenile female, same details as holotype, K-8853, K-8876– K-8883; 1 male, same details but pitfall 21.i.–7.iv.1995, sample NOH-1841, NMV K-8854 ; 2 males, 2 females, Road 26, 0.2 km WNW of Donna Buang Road junction, 37°43'S, 145°39'30''E, pitfall 29.xi.1994 to 20.i.1995, G. Milledge, Eucalyptus forest, sample NOH-1846, NMV K-8855, K-8884– K-8886 GoogleMaps ; 1 male, Acheron Gap , 6 km NE of Mt Donna Buang, 37°40'43''S, 145°44'20''E, pitfall 28.xii.1995 – 21.ii.1996, G. Milledge, Nothofagus forest, sample NOH-1853, NMV K-8856 GoogleMaps .

Diagnosis. Differs from V. acanthus sp. nov. in the form of the gonopod, notably the anterior curvature of the solenomere and the absence of small, branched, spiny processes on the lateral division of the telopodite.

Description. Males c. 15 mm long, 1.2 mm in maximum vertical diameter. In alcohol, well-coloured specimens with pale yellow antennae and yellow-orange head, legs and paranota; prozonite and metazonite ground colour pinkish-brown; metazonite reddish-brown below paranota and with mid-dorsal, triangular reddish-brown patch; posterior margin of metazonite and distal podomeres reddish-brown.

Gonopod telopodites ( Figs 4 View Figure 4 , 5 View Figure 5 ) short, wide, closely appressed basally but not joined. Basal portion of telopodite excavated posteromesally, with variably long setae on posterolateral surface. Telopodite with a transverse constriction at between one-third to one-half its length, angled distad from lateral to mesal, separating setose basal portion from bare distal portion, latter divided basally into mesal, posteromesal and lateral branches. Mesal branch divides basally into a long, tapering, acutely pointed solenomere and a long, flattened process arising posterior to solenomere. Solenomere extends distally, then turns abruptly anteriorly at about three-quarters the length of the telopodite before terminating in a short, distally directed tip. Prostatic groove running along mesal surface of telopodite, following curvature of the solenomere and terminating at its tip. Laterally flattened process accompanying the solenomere directed anterodistally and slightly mesally, expanding in its distal half into a large flattened, fanlike structure with numerous marginal teeth and a roughened surface. Just distal and posterior to solenomere origin, posteromesal process arising as a narrow, rod-like, tapering process, curving mesally and anteriorly and terminating just distal to the most distal teeth of the process accompanying the solenomere. Lateral branch of telopodite by far the largest, greatly inflated basally, terminating in toothed crests anteriorly and posteriorly.

Distribution and microhabitat. In wet eucalypt and Nothofagus forest litter in the Mt Donna Buang area ( Fig. 6 View Figure 6 ).

Etymology. Latin semi - (half) + nudus (naked), adjective, because the setose basal portion of the gonopod telopodite is so clearly separated by a transverse constriction from the bare distal portion.