Morogorius louishanseni Enghoff & Ngute & Mnendendo & Kivambe & Mhagawale & Malanda & Mpoto & Marshall 2025, sp. nov.

Morogorius louishanseni Enghoff sp. nov. urn:lsid:zoobank.org:act: 4F551606-55DA-40F7-818B-C21F9BA84545 Figs 1, 2B, 7–8 Diagnosis Differs from other species of Morogorius by the shape of the parasolenomere: broad base, lateral shoulder and tapering apical part (Fig. 8C–D). Etymology Named after Louis Hansen, collector of many new millipede species in the Udzungwa Mts. Noun in genitive. Material examined (total 31 ♂♂, 10 ♀♀) Holotype TANZANIA • ♂; Iringa Region, Mahenge Distr., West Kilombero Scarp Forest Reserve, Nyumbanitu Mts, S Udekwa Village; 07°48′ S, 36°21′ E; 1500 m a.s.l.; Dec. 1993; J.O. Svendsen leg.; NHMD 1184745. Paratypes TANZANIA • 9 ♂♂, 5 ♀♀; same data as for holotype; NHMD 1184713 • 4 ♂♂, 2 ♀♀; same data as for holotype; 1700 m a.s.l.; NHMD 1184577 • 1 ♂, 2 ♀♀; Iringa Region, Udzungwa Mts, Ndundulu Forest, Waller’s camp; 07°46′ S, 36°29′ E; 1550 m a.s.l.; Dec. 2006; L.A. Hansen and local assistants leg.; tropical semi-evergreen forest; NHMD 1184700 • 2 ♂♂, 1 ♀; same data as for preceding; 1–12 Jan. 2007; NHMD 1184712 • 14 ♂♂; Udzungwa Mts, Kitungulu Forest Reserve; 08°09′ S, 36°05′ E; 1500 m a.s.l.; Jan. 1996; M. Andersen, P. Gravlund and A. Jakobsen leg.; NHMD 1184563. Description (males) SIZE. Length 29–30 mm, max. width 3.6–3.8 mm. COLOUR (Fig. 2B). After 17–28 years in alcohol head light brown, collum light brown with broad whitish margin. Dorsal side of rings with posterior half of each ring whitish to very light brown, anterior half of each ring brownish; paranota whitish, no difference between poriferous and non-poriferous rings. Antennae, legs, venter and telson very light brown to whitish. COLLUM. With a row of 4 setae close to anterior margin. BODY RINGS (Fig. 7). Metazonites 1.4–1.6 × as broad as prozonites, with 1+1 small, thin setae anteriorly and a prominent transverse sulcus on rings 5–17, granulation irregular, with a tendency to longitudinal striolation behind sulcus. Paranota already from ring 5 with posterior corners projecting increasingly backwards, first as rounded lobes, further back as pointed triangles, those of ring 16 with a few denticles at base of mesal margin. Ozopores in smooth peritremata on edge of paranota, ca midway between anterior and posterior margin. Sides of rings with a row of slightly larger tubercles along posterior margin. LEGS. Length 1.5–1.6 × maximum body width. GONOPODS (Fig. 8). Coxa (cx) with a stout cone-shaped apical process (cxp), two long setae (as) at base of process, no setae on lateral surface. Prefemoral part (prf) ca 2× as long as broad. Prefemoral process (prp) closely appressed to and distally curving over solenomere, prp at base with triangular expansion, distally expanding, its tip curved back on itself. Solenomere (slm) long, slender, regularly tapering. Parasolenomere (ps) slightly shorter than solenomere, lamellate, basal part broad, lateral margin with marked ‘shoulder’, ps thereafter more or less regularly tapering. Distribution and habitat Known from three sites in the Udzungwa Mountains: Nyumbanitu Mountains, Ndundulu Forest and Kitungulu Forest Reserve (Fig. 1). Collected in tropical semi-evergreen forest at 1500–1550 m a.s.l.