A mountain of millipedes V: three new genera of Odontopygidae from the Udzungwa mountains, Tanzania (Diplopoda, Spirostreptida, Odontopygidae) Author Enghoff, Henrik text European Journal of Taxonomy 2016 2016-08-12 221 1 17 journal article 21893 10.5852/ejt.2016.221 6994309f-b9aa-4a68-a050-f8fa43a63ada 2118-9773 3840279 A9E7A041-A454-4BC1-BCF4-F1E021BFDCD5 Yia geminispina gen. et sp. nov. urn:lsid:zoobank.org:act: 0861F871-FE89-4563-9C19-5F1A95D2B4C1 Figs 5–6 Diagnosis ( redundant, genus monotypic) Etymology The name is a composite Latin noun in apposition meaning “twin spine” and refers to the pair of long spines on the telomere. Material studied (total: 1 Ƌ) Holotype TANZANIA : Ƌ, Udzungwa Mts. , Chita Forest Reserve [actually: Udzungwa Scarp F. R .], 1100 m , 25 Oct. 1984 , M. Stoltze & G. Petersen leg. ( ZMUC00047001 ). Fig. 5. Yia geminispina gen. et sp. nov. , holotype. A . Part of midbody showing the characteristic course of the suture and the position of the ozopore (highlighted in red on one body ring). B–D . Left gonopod coxa. B. Anterior-mesal view. C. Posterior view. D. Mesal view, close-up. E . Limbus. Abbreviations: cu = cucullus, lp = lateral coxal process, mf = metaplical flange, mp = metaplica, ms = metaplical shelf, msp =metaplical spine, pp = proplica, prl = proplical lobe. Scales: A = 1 mm; B–D = 0.1 mm; E = 0.005 mm. Fig. 6. Yia geminispina gen. et sp. nov. , holotype. Left gonopod telopodite. A . Posterior, slightly basal view. B . Anterior, slightly basal view. C . Anterior, slightly basal view. D. Basal view. E–F . Detail of margin of telomere. F . Tip of telomere. Abbreviations: ba = basomere, pn = post-torsal narrowing, slm = solenomere, tdp = telomeral distal process, tlm = telomere, ts1 , ts2 = telomeral spines, tt = torsotope. Scales: A–D = 0.1 mm; F = 0.05 mm; E = 0.005 mm. Description (male) SIZE. Length ca 4 cm , diameter 2.6 mm , 49 podous rings, no apodous rings in front of telson. COLOUR. Faded, very faint traces of a broad, light dorsal stripe. HEAD. Without peculiarities. COLLUM. With a marginal and a submarginal furrow. BODY RINGS ( Fig. 5A ). Almost perfect cylinders, not vaulted; suture with an extended, shallow anteriad sinus below ozopore level; ozopores ca three diameters behind suture. ANAL VALVES. Each with a long, curved dorsal spine; marginal rim slightly raised, setiferous tubercles slightly protruding in a laterad direction (i.e., on very small ‘ravelins’). OZOPORES. Starting from ring 6. LIMBUS ( Fig. 5E ). With simple, slender-triangular lobes. Surface of lobes longitudinally microstriate. MALE LEGS. With postfemoral and tibial ventral pads in anterior half of body, except for first few legpairs. GONOPOD COXA ( Fig. 5 B–D). Slender and almost parallel-sided in anterior view. Proplica ( pp ) simple, proplical lobe ( prl ) not covered. Metaplica ( mp ) with low, right-angled flange ( mf ), above arculus with transverse shelf ( ms ), laterally with triangular process ( lp ), apically forming a small hood, or cucullus ( cu ). A curved spine ( msp ) originating between ms and cu. GONOPOD TELOPODITE ( Fig. 6 ). Arculus 90°. Torsotope ( tt ) simple, compact, without processes ( Fig. 6B ). Posttorsal narrowing ( pn ) without processes or spines. Telopodite just distal to posttorsal narrowing dividing into solenomere and telomere. Solenomere ( slm ) long, simple, whiplike, ca as long as telomere. Proximal part of telomere ( tlm ) roughly broadly triangular; two very long, curved spines ( ts1, ts2 ) arising from small lobe on basal side of telomere, close to the origin of the solenomere; distal part of telomere drawn out into very long, very slender process ( tdp ), one edge of tdp with a row of long, Y- or I-shaped spikes; tip of tdp complicated micro-spinose. Distribution and habitat Known only from the type locality. Coexisting species No other odontopygids were present in the sample containing the unique holotype , but a number of other species have been recorded from Udzungwa Scarp F.R.: Chaleponcus circumvallatus Enghoff, 2014 , C. hamerae Enghoff, 2014 , C. nikolajscharffi Enghoff, 2014 , Aquattuor sterosathe Enghoff, 2015 , A. udzungwensis Enghoff, 2015 , Prionopetalum asperginis Enghoff , 20XX and Casuariverpa scarpa gen. et sp. nov.