Aquattuor stereosathe Enghoff, 2015

Enghoff, Henrik, 2020, A mountain of millipedes VIII. The genus Aquattuor Frederiksen, 2013 revisited - a new species from the Udzungwa Mts, Tanzania, another from the Nguru Mts, and introduction of the first pair of male legs as a source of taxonomic characters (Diplopoda, Spirostreptida, Odontopygidae), European Journal of Taxonomy 626, pp. 1-32 : 22

Aquattuor stereosathe Enghoff, 2015

Figs 1 , 6 D–F, 8A, 9

Aquattuor stereosathe Enghoff, in Enghoff & Frederiksen, 2015: 15 .

Diagnosis

Diameter 1.68–1.75 mm, 46–51 podous rings ( Fig. 9 ). Shares a short (as broad as long, or slightly longer) gonopodal palette with A. claudiahempae , A. denticulatus , A. fasciatus , A. submajor and A. udzungwensis . Differs from these species by having the gonopodal telomere describing a ca 360° curve, curving in three dimensions, and by having the telomere tip with coarsely laciniate margins and a surface that is not microspiculate.

Material studied (total: 1 ♂)

TANZANIA • 1 ♂, paratype; Iringa Region, Udzungwa Mts, Udzungwa Scarp FR, above Chita Village ; 1050 m a.s.l.; 26–29 Oct. 1984; N. Scharff leg.; pitfall trap in intermediate rain forest; NHMD 621650 .

Descriptive notes

First pair of male legs ( Figs 6 D–F): prefemoral processes relatively stout, triangular; setae of telopodite distal to prefemur same length as setae of normal walking legs.

Distribution

Known only from the Udzungwa Scarp FR in the Udzungwa Mts. Altitudinal range: 900–1500 m a.s.l.

Figures

Fig. 1. Collecting sites for Aquattuor spp. in the Udzungwa Mts. Based on Marshall et al. (2010: fig. 1); inset by permission of the Eastern Arc Mountains Conservation Endowment Fund.

Fig. 6. Aquattuor spp., first pair of male legs. A–C. A. mollilobus sp. nov., paratype, ♂ (NHMD 621647). D–F. A. stereosathe Enghoff, 2015, paratype, ♂ (NHMD 621650). A, D. Anterior view. B, E. (Sub)- lateral view. C, F. (Sub)-ventral view. Abbreviations: dpl = distal prefemoral lobe; pfp = prefemoral process. Scale bars = 0.1 mm.

Fig. 9. Aquattuor spp. Body size (number of podous rings and midbody vertical diameter) in males of Aquattuor species from the Udzungwa Mts, and of A. claudiahempae Enghoff & Frederiksen, 2015 from Mt Kilimanjaro. In case of (almost) coinciding values, symbols have been slightly displaced horizontally.