Hyperbolus morogoroensis ( Kraus, 1958 ) Kraus, 1958

Enghoff, Henrik, 2011, East African giant millipedes of the tribe Pachybolini (Diplopoda, Spirobolida, Pachybolidae), Zootaxa 2753, pp. 1-41 : 21-23

Hyperbolus morogoroensis ( Kraus, 1958) , n. comb.

Figs 38–43 , 84

Pachybolus morogoroensis Kraus, 1958

‘ Pachybolous’ morogoroensis : Wesener et al. 2008

HOLOTYPE 3, TANZANIA, Morogoro District, Uluguru Mountains, between Kimboza and Kibungu, 7°02’S 37°44’E, 500 m, in rain forest under leaf litter and in rotten wood, 16.vii.1952, H. Knipper leg. ( UMB). – PARA- TYPE 1 Ƥ, same data (SNF).

NEW MATERIAL from TANZANIA, Morogoro region, Morogoro district, N. Doggart, Uluguru Mountains Biodiversity Conservation Project, leg.: 1 3, 1 Ƥ, 1 juvenile Ƥ Kasanga Forest Reserve, 7°10’S 37°45’E, leaf litter and rotting logs, 27.vii. –2.viii.2000, ( ZMUC 00101080). – 2 3, 1 Ƥ Mkungwe Forest Reserve, 6°52’30’’S 37°53’30’’E, lowland submontane forest, 400–1000 masl, viii.2000, ( ZMUC 00101082). – 1 3, 1 Ƥ Ruvu Forest Reserve, 7°00’S 37°51’E, 200 masl, 2000 ( ZMUC 00101083). - 1 3, 1 Ƥ Ngambaula L.A. Forest Reserve, 6°59’S 37°45’E, 250 masl, 2000 ( ZMUC 00101084). – 1 Ƥ Chamanyani Forest Reserve, Mvuha, lowland forest, 7°10’30’’S 37°49’E, 140–400 masl, ix. 2000 ( ZMUC 00101086).

MORE NEW MATERIAL from TANZANIA: 2 3, Uluguru Mountains, Vituri, 7°10’S 37°45’E, 30.x.1926, A. Loveridge leg. (MCZ no. 67914). – 1 Ƥ Uluguru Mountains, Kikosi near Bagilo. 6°55’S 37°40’E, 9.ix.1926, A. Loveridge leg. (MCZ no. 43311). – 1 Ƥ Morogoro Region, Uluguru South Forest Reserve, forest above Ukwama Village, 7°11’S 36°42’E, 1500–1600 masl, x.1993, L. Sørensen leg. (ZMUC 00101085). – 1 Ƥ Uluguru Mountains, Kimboza Forest, 7°02’S 36°47’E, 250 masl, 18.vii.1981, M. Stoltze & N. Scharff leg. (ZMUC 00101087).

Diagnosis. A species of Hyperbolus in which the anterior gonopod coxite has a single mesal process, the anterior gonopod telopodite has an approximately semicircular mesal process directed straight mesad, and the apical lobe of the multiridged ‘mushroom-like’ structure of the posterior gonopod telopodite drawn out in to a smooth hook.

Description. Adults mostly with 56 (9 out of 15 entire specimens), sometimes with 55 (3 specimens) or 57 (3 specimens) podous rings, no apodous rings. Length 12–13 cm. Width: 11.3–12.2 mm (3) / 11.9–13.9 mm (ƤƤ). Head, including eyes, antennae, mandibles, and gnathochilarium as in H. apicomplexus . Each gnathochilarial stipes with 3 apical setae; each lamella lingualis with 4 apical setae.

Collum, body rings, telson and legs as in H. apicomplexus .

Male sexual characters. Ring VII and leg modifications as in Crurifarcimen vagans .

Gonopods ( Figs 38–42 ) as in H. apicomplexus , with the following exceptions:

- Anterior gonopod coxa ( Figs 38, 40 ) with apical margin not sloping, almost straight, and with one rounded-triangular process at mesal margin just distal to sternum (versus two finger-shaped processes in H. apicomplexus ) - Overlapping lobes of anterior gonopod telopodites much smaller, sub-semicircular ( Fig. 39 )

- Terminal segment of posterior gonopods ( Fig. 42 ) less mushroom-like; distal lobe of “hat” drawn out into slen- der hook; oral side of “hat” with parallel, strongly sclerotized ridges; field of ridges detached from surface basally and hiding basal lobe of “hat” from view; ridges diminishing in size and eventually disappearing towards tip of distal lobe.

In some specimens, the posterior gonopod solonomerite has a row of small denticles. Female sexual characters. Distal margin of lateral coxosternal extensions projecting as right-angled lobe. Vulva ( Fig.43 ) similar to those of H. apicomplexus but differing in having the subrectangular lobe on the aboral valve and the subtriangular lobe on the oral valve much less developed.

Habitat. Lowland forest and lowland submontane forest, found in litter and rotten logs. Distribution. Only known from the Uluguru Mountains ( Fig. 84 ) where it occurs from 250 (possibly 140) to 1500–1600 masl.

Figures

FIGURE 84. Known distribution of East African Pachybolini, except Hadrobolus crassicollis and Epibolus pulchripes. dots (●): Crurifarcimen vagans, filled diamonds (♦): Hyperbolus apicomplexus, open diamonds (♢): Hyperbolus morogoroensis, filled triangle (˔): Parabolus dimorphus, inverted open triangle (): Parabolus calceus, inverted filled triangle (ˑ): Pachybolus tectus,, filled square (․): Pachybolini indet. Based on Yahoo maps.

FIGURES 38 – 41. 38: Hyperbolus morogoroensis, male from Ngambaula L. A. Forest Reserve, gonopod block, anterior view, G. Brovad phot., 39: do., posterior view, G. Brovad phot. s, 40: do., right anterior gonopod coxa, anterior view, SEM, 41: right anterior gonopod telopodite, anterior view (i. e., from inside of anterior gonopod cavity), SEM. Scales 1 cm. cx: coxa, fp: finger-shaped process, mp: mesal, thumb-like process of telopodite, st: sternum, tlp: telopodite.

FIGURES 42 – 43. Hyperbolus morogoroensis. 42: male from Mkungwe Forest Reserve, tip of left posterior gonopod, oral view. 43: female from Mkungwe Forest Reserve, left vulva, posterior-lateral view. Scales 1 mm. ap: apical appendix, lav: subrectangular lobe of aboral valve, lov: subtriangular lobe of oral valve, op: operculum, slm: solenomerite.