Pseudotibiozus Demange, 1970 - millipedes of the Eastern Arc Mountains, Tanzania (Diplopoda, Spirostreptida, Spirostreptidae) Author Enghoff, Henrik Author Larsson, Tobias Berglund text Zootaxa 2018 4425 3 541 554 journal article 29986 10.11646/zootaxa.4425.3.7 4e5a28bc-9d7d-4b3f-b526-2fa812aae747 1175-5326 1270435 DE27A002-C0D2-4F96-851B-D0C1C51554B5 Pseudotibiozus cerasopus ( Attems, 1914 ) Figs 1 , 2 A, C , 3 A–D , 4 A , 5 A, C , 6 , 7 Mardonius cerasopus Attems, 1914 : 139 Epistreptus cerasopus : Attems (1950) Pseudotibiozus cerasopus : Demange (1970) Diagnosis. Differs from the only known congener, P. zophoribates sp. nov. , by being smaller (diameter of males 4.4–4.8 mm , vs. 6.0– 6.6 mm ), by having the apical proplical lobe almost semi-circular with a short, pointedtriangular or rounded-triangular mesapical process, and by having the apical lobe of the metaplica irregularly triangular. Material studied (total: 17 ♂♂, 3 ♀♀, 5 juv.) Holotype : ♂ ZMB 1368 Ost-Afrika, Conradt leg. ( MfN ). Paratype ?: ♂ ZMB 2050 Buola bei Tanga , Ost-Afrika, Lücker leg 20.vii.1895 ( MfN ) None-type material ( All from TANZANIA , all in ZMUC ): East Usambara Mts: 3 ♂♂ , 3 juv. Amani, ca. 1000 m asl, 25.vii.–5.viii.1974 . I.B. & H. Enghoff leg. (specimens reported by Enghoff & Enghoff 1976 ; additional data on individual specimens: “forest clearing at the Kwankoro Road”, ”on the loft of a house”, “on road by night”, “Amani W Forest Reserve, at Dodwe River”, “Amani Pond, under dry bark”); 1 ♂ Amani, ca. 1000 m asl, 1.ix.1981 , N. Scharff & M. Stoltze leg. Kanga Mts : 1 ♂ 400 m asl , 23.xi.1984 , M. Stoltze leg. ; 1 ♀ Morogoro Region , Kanga Forest Reserve , 400-500 m asl , 22-25.xi.1984 , lowland rain forest, N. Scharff leg. Udzungwa Mts : 1 ♂ , 1 juv. Mwanihana Forest above Sanje , 1000m asl , 1.viii.1982 , M. Stoltze & N. Scharff leg. ; 1 juv. Mwanihana Forest , Sanje River , 1400 m asl , litter, 15.xii.1982 , M. Stoltze & N. Scharff leg. ; 2 ♂♂ Morogoro Region , Udzungwa Mts National Park , Mizimu Camp , 1.ix.2013 , 07°48’23.40”S , 36°51’7.29”E , 769 m . Hand collected. T. Pape & N. Scharff leg. ; 4 ♂♂ Morogoro Region , Kilombero District , Udzungwa Mts National Park , Mizimu Camp , 19-21.viii. 2017 , 780 m asl, 07°48.390’S , 36°51.123E . Hand collected in forest, night collecting, J. Pedersen leg. ; 3 ♂♂ Morogoro Region , Udzungwa Mts National Park , Sanje Chini camp, 598m , 07°46’24.6”S , 36°54’.47.7”E, 17-19.i.2014 , hand collected. T. Pape & N. Scharff leg. ; 1 ♀ Morogoro Region , Udzungwa Mts National Park , Mizimu Camp , 3.ix.2012 , 07°48’23.40”S , 36°51’7.29”E , 769 m , hand collected. T. Pape & N. Scharff leg. ; 1 ♀ Morogoro Region , Udzungwa Mts National Park , trail to Mizimu Camp , 250 m asl ., hand collected 3.ix.2012 . T. Pape & N. Scharff leg. Description. Males. SIZE. Body length 52–60 mm . Diameter 4.4–4.8 mm . 41–43 body rings. COLOUR. Live colour ( Fig. 1 ) black, prozonites dull with a greyish tinge, metazonites shining deep black; antennae red-brown; legs contrastingly bright red; superficially resembling a miniature version of the common East African Epibolus pulchripes ( Gerstäcker, 1873 ) (fam. Pachybolidae , order Spirobolida ). Colour of preserved specimens faded, legs reddish orange. MANDIBLES ( Fig. 6 ). Stipes with apicoventral lobe, a soft pad apically on the lobe. Odontomere ( od ) fused with psectromere ( ps ); sectile edge ( se ) of psectromere with four lobes; a meso-dorsal lobe ( mdl ) present between od and se . 11 pectinate lamellae ( pl ). Molar plate with a distal transverse groove ( mg ) occupying ca. 1/6 of the mesal surface. Dorsal surface of mandible with a group of small pointed pegs ( pp ) between pectinate lamellae and molar plate ( Fig. 6 D ). GNATHOCHILARIUM ( Figs 3 A–D ). Basal edge of median depression of mentum ( mda ) sharp, overlying main part of mentum and thus delimiting an arched, transverse cavity. Stipites ( st ) with a longitudinal patch of setae ( sbs ) in basal half. FIGURE 1. Pseudotibiozus cerasopus (Attems, 1914) , specimen from the Udzungwa Mts. Photo by N. Scharff. FIGURE 2. Pseudotibiozus spp. A–B : midbody rings seen from the inside, showing sigilla (light spots) and dark ‘spikes’ projecting into light posterior part of metazona. A : P. cerasopus , specimen from East Usambara Mts, Amani, B : P. zophoribates sp. nov. , paratype. C : P. cerasopus , specimen from East Usambara Mts, Amani, parts of three consecutive body rings, seen from the outside, showing dark ‘spikes’. Scales 1 mm. Abbreviations: ds = dark ‘spike’, oz = ozopore. BODY RINGS ( Fig. 2 A ). A single row of large sigilla; sometimes additional, incomplete rows of smaller sigilla. LEGS. As long as body diameter. First pair with a patch of setae on coxosternum ( Fig. 5 A ). GONOPODS ( Figs 5 C , 7 ). Proplica parallel-sided, apically with an almost semi-circular lateral lobe ( apl ), mesapically with a short, triangular process ( map ). Metaplica with mesal margin turning laterad at ca. 45° just before end of proplica, apical lobe ( aml ) subtriangular, projecting laterad and apicad, more or less resembling the head of a seal. A sub-circular sport of dark colour subbasally on posterior surface of metaplica, position of dark spot variying between individuals, but always symmetrical. Antetorsal process ( atp ) of telopodite ( Fig. 5 C ) projecting distad, completely hidden between pro- and metaplica. Females. SIZE. Body length 57–61 mm . Diameter 5.4–5.7 mm . 40–44 body rings. LEGS. Length 0.75 × body diameter. Distribution. Known from three massifs of the Eastern Arc Mountains: East Usambara, Kanga and Udzungwa Mts ( Fig. 9 ).