Chaleponcus jolantae, Enghoff, 2022

Enghoff, Henrik, 2022, Mountains of millipedes. The family Odontopygidae in the Eastern Arc Mountains of Tanzania (Diplopoda, Spirostreptida), European Journal of Taxonomy 803, pp. 1-136 : 39-42

Chaleponcus jolantae sp. nov.

urn:lsid:zoobank.org:act:2F74BD3E-030D-49B2-B860-48758902BCAD

Figs 24–25

Diagnosis

Differs from all congeners in the shape of the metaplical spinelike process (msp) which in this species forms a complete circle and has a basal rounded lobe.

Etymology

After Jolanta Wytwer, Polish myriapodologist, former resident of ‘Hotel Dolichoiulus’.

Material examined (total 1 ♂)

Holotype TANZANIA • ♂; Tanga, West Usambara Mts, Mazumbai ; 4°49′ S, 38°30′ E; 1400–1800 m a.s.l.; 10–20 Nov. 1995; C. Griswold, N. Scharff and D. Ubick leg.; forest; NHMD 621723 .

Description (male)

SIZE. Length 50 mm, diameter 2.7 mm, 66 podous rings, no apodous rings in front of telson.

COLOUR. After 23 years in alcohol head yellowish with dark brown transverse band; antennae brown. Collum light marbled brown with brown margins. Body rings with thin, black, slightly wavy longitudinal line at ozopore level. Metazonites with dark brown zone in front of amber posteriormost zone. Rest of rings ventral to lateral line brownish yellow, dorsal to line greyish, but with a light longitudinal middorsal stripe. Legs yellowish. Prenal ring dark brown, but with a contrasting light yellowish dorsal band which widens towards posterior; anal valves light yellowish except for small dark bron anterior area.

SUPRALABRAL SETAE. 5.

MANDIBULAR STIPES. With triangular lobe, distal margin bilobed.

ANAL VALVES. With small dorsal spine, no ventral spine or corner; margins barely raised, setae not on ravelins.

LIMBUS ( Fig. 25F ). With low, rounded lobes (worn?).

LEGS. With large ventral pads on postfemora and tibiae from leg-pair 6, pads diminishing towards posterior and eventually disappearing.

FIRST PAIR OF LEGS ( Fig. 24A–C ). Prefemoral lobes rounded-triangular in ventral view. Four coxosternal setae (CXS) close to lateral margin of coxosternum, well separated from prefemoral lobes. Prefemora with two short mesapical setae (APS) and a field of peglike sensilla (LPS) extending to tip of prefemoral lobes.

STERNUM 9 ( Fig. 25E ). Triangular-trapezoid.

GONOPOD COXA ( Fig. 24D–F ). At ca ⅔ of its length with a large triangular posteriad process (cpp). Cucullus (CU) a rounded-triangular palette. Proplica (PP) slender, in anterior view with parallel margins, proplical lobe hidden behind metaplical process (msp). Metaplica (MP) with a pigtail-like basad process (msp), base of msp with a rounded lobe, apparently duplicating proplical lobe; metaplical flange (MF) with a well-differentiated basal process (MFP).

GONOPOD TELOPODITE ( Fig. 25A–D ). Arculus 90°. Torsotope (TT) moderately extended, with a blunt lobe (TL) fitting into torsion on posterior side. Postotorsal narrowing (PN) not very procounced, no post-torsal spine. Solenomere (SLM) whiplike, apically taeniate, pointed, much longer than telomere, without outgrowths except for stout, curved spine (BSS) at base. Telomere (TM) rather compact, with a basal lamella (btl) sheathing base of solenomere, apically with several irregular lamellae (tml); with two

lamellar processes (tp1, tp2) directed laterad, i.e., towards coxa, and two dark, curved spines (ts1, ts2) arising from inner curvature of telomere.

Distribution and habitat

Known only from the type locality, Mazumbai in West Usambara Mts. See Redhead (1981) for information in this area.

Figures

Fig. 24. Chaleponcus jolantae sp. nov., holotype, ♂ (NHMD 6217123). A–C. First pair of legs. A. Sublateral view. B. Ventral view. C. Anterior view. D–F. Right gonopod coxa. D. Anterior view. E. Mesal view. F. Posterior view.Abbreviations: APS =mesapical prefemoral setae;cpp =coxal posteriad process; CU= cucullus; CXS = coxosternal setae; LPS =lateral prefemoral setae; MF =metaplical flange; MFP =metaplical flange process; msp= metaplical spinelike process; PP=proplica. Scale bars: A =0.1 mm; B–F =0.2 mm.

Fig. 25. Chaleponcus jolantae sp. nov., holotype, ♂ (NHMD 621723). A–D. Right gonopod telopodite. A. Posterior view. B. Anterior view (inset: telomeral spines enlarged and highlighted). C. Submesal view, basomere erased. D. Lateroanterior view. E. Sternum 9. F. Midbody dorsal limbus. Abbreviations: btl =basal telomeral lamella; PN =post-torsal narrowing; SLM = solenomere; TL = torsotope lobe; TM =telomere; tp1, tp2 =telomeral processes; ts1, ts2 =telomeral spines; TT =torsotope. Scale bars: A–D =0.1 mm; E =0.2 mm; F =0.01 mm.