Pogonosternum jeekeli Decker & Mesibov & Voigtländer & Xylander 2017, sp. nov.
Creators: name: Decker, Peter
name: Mesibov, Robert
name: Voigtländer, Karin
name: Xylander, Willi E. R.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplopoda
Polydesmida
Paradoxosomatidae
Pogonosternum
Pogonosternum jeekeli

description: Pogonosternum jeekeli Decker, sp. nov.
urn:lsid:zoobank.org:act: D7334EB7-E36A-44CE-9ABA-D03FF08450AE
Figs 5C, 7, 18–21, 26D
Pogonosternum sp. – Mesibov & Churchill 2003: 3–7 (record, ecology). — Decker 2016a: 16 (record).
Pogonosternum sp. A — Decker 2016a: 17–24 (record, mention).
Diagnosis
Differs from the other Pogonosternum species in having two lighter paramedian stripes and a median darker stripe; from P. nigrovirgatum, primarily by lateral process (lp) often longer, reaching or projecting distad of most distal position of prolongation of femorite (prof), male tarsal and tibial brushes present to legpair 9, but prof never distinctly elongated and broadly curved.
Etymology
In honour of the Dutch myriapodologist Casimir A.W. Jeekel, who worked on the Australian paradoxosomatid fauna and described most of the previously known species of Pogonosternum.
Material studied
Holotype AUSTRALIA: 1 ♂, Victoria, Warby-Ovens National Park, 8 km NE of Thoona, Devenish-Wangaratta Road, S22, 8 Aug. 2014, leg. P. Decker, R. Mesibov & K. Voigtländer (NMV K-12178).
Paratypes AUSTRALIA: 5 ♂♂, same data as holotype (NMV K-13343–13347); 1 ♂, same data as holotype (SMNG VNR017113); 1 ♂, Victoria, Warby-Ovens National Park, 6 km N of Glenrowan, Taminick Gap Road, S21, 8 Aug. 2014, leg. P. Decker, R. Mesibov and K. Voigtländer (NMV K-12177); 4 ♂♂, 3 ♀♀, same data as preceding material (NMV K- K-13326–13342); 1 ♂, Victoria, Warby-Ovens National Park, 9 km NE of Thoona, Ridge Road, S23, 8 Aug. 2014, leg. P. Decker, R. Mesibov and K. Voigtländer (NMV K-12179).
Other material examined
See Supplement 1 (total: 38 localities, 62 ♂♂, 30 ♀♀, 33 juv.)
Description
MEASUREMENTS. Length ca 1.7–2.5 cm; midbody width ca 1.8–2.4 mm.
COLOURATION. Colour in fresh material (Figs 18, 26D): margin of lateral edges of collum sometimes slightly to distinctly lighter (Fig. 18B). Dorsum with 2 paramedian light yellowish brown stripes and darker median brown stripe. On prozonites the trapezoidal paramedian light band slightly broader anteriorly, and on metazonites slightly broader posteriorly, broadest at 1/3 of length (Figs 18D, 26D).
Darker median stripe narrow to rhombic, broadest 3/4 of length on metazonites and prozonites. Flanks often distinctly lighter. Area around ozopores slightly to distinctly lighter, cloudy pale (Fig. 18C).
STERNITES. No conspicuous sternal cones.
LEGS. Male tarsal and tibial brushes present from legpair 1 to 9, abruptly absent after.
GONOPODS. Considerable variability present (Figs 19–20). Femorite (F) moderately long and wide. Prolongation of femorite (prof) long to very long, S-shaped. Apical part of prof rather short, directing nearly straightly distad (Fig 20A) to distolaterally curved, sometimes crossing lateral process (lp) anteriad or posteriad to lp (Fig. 19 E–H). Apical part of prof often abruptly narrowing mesally (Figs 19, 20B). Femoral process 1 (fp1) laminate, moderate to long, moderately broadly subtriangular with more or less blunt tip, not reaching lp and solenomere (S). Femoral process 2 (fp2) small, knob-like to subtriangular. Lateral process (lp) on lateral side of prof, moderate to long, laminate, directed distolaterally, tip often curved laterally, projecting distad of solenomere, projecting distad of (Figs 19, 20A) or nearly reaching prof.
SPIRACLES. Anterior spiracles distinctly obliquely ovoid. Rim raised with anterodorsal side often broadly extended, not lobiform and spiracular filter not or slightly protruding. Posterior spiracle ovoid with low rim and spiracular filter not protruding (Fig. 21).
Ecology
Pogonosternum jeekeli Decker, sp. nov. was mostly found in forests to 400 m a.s.l., but was also collected at ca 920 m a.s.l. and was found in pine plantations by Car (2010).
Distribution
So far known from the northern and southern borders of the Great Dividing Range in eastern Victoria and southeastern New South Wales. Also recorded from Flinders Island and some islands of the Furneaux Group in the Bass Strait and in the northeastern corner of Tasmania (Fig. 7).
Remarks
There is no apparent geographical pattern to gonopod variation in P. jeekeli Decker, sp. nov. (see also Decker 2016a). Specimens from coastal central Gippsland, east of Orbost, and Tasmania are lighter in colour on the flanks than those from the higher elevated areas of the Australian mainland.
description: Published as part of Decker, Peter, Mesibov, Robert, Voigtländer, Karin & Xylander, Willi E. R., 2017, Revision of the Australian millipede genus Pogonosternum Jeekel, 1965, with descriptions of two new species (Diplopoda, Polydesmida, Paradoxosomatidae), pp. 1-34 in European Journal of Taxonomy 259 (259) on pages 22-26, DOI: 10.5852/ejt.2017.259, http://zenodo.org/record/3776295