Chaleponcus altirungwensis, Enghoff, 2017
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publication ID |
https://doi.org/ 10.11646/zootaxa.4353.2.11 |
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publication LSID |
lsid:zoobank.org:pub:81FB9B8E-5FB4-4532-8FE7-21AEB508D32A |
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DOI |
https://doi.org/10.5281/zenodo.6021946 |
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persistent identifier |
https://treatment.plazi.org/id/03D687DE-4E02-FC01-EBCC-582DFBB9FD36 |
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treatment provided by |
Plazi |
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scientific name |
Chaleponcus altirungwensis |
| status |
sp. nov. |
Chaleponcus altirungwensis View in CoL sp. nov. ( Fig. 1 View FIGURE 1 )
Diagnosis. A species of the C. dabagaensis group, differing from congeners by several gonopodal characters including a furrowed ‘fistlike’ mesal process subdistally on the gonopod coxa and a backwards-bent solenomere tip.
Etymology. The name is a composite adjective and refers to the type locality at high altitude on Mount Rungwe.
Material studied (total: 6 ♂♂, 8 ♀♀, 6 juv.)
Holotype: ♂ TANZANIA, Mount Rungwe SW, 1900 m, 20.viii.1980, in soil, M. Stoltze & N. Scharff leg. ( ZMUC).
Paratypes: 5 ♂♂, same data as holotype, in pit fall traps and in soil ( ZMUC).
Additional non-type material: 8 ♀♀, 6 juv., same data as holotype, in pit fall trap, in soil, in litter, under bark.
Description. SIZE. Length. 22–26 mm (males), max. 30 mm (females). Diameter 1.57–1.80 mm (males), max. 2.04 mm (females). 43–46 podous rings, no apodous rings in front of telson.
COLOUR. Somewhat faded after 37 years in alcohol, brownish yellow, darker dorsolaterally, with a contrasting broad light dorsal longitudinal stripe and a narrow dark line at ozopore level.
ANAL VALVES with a small dorsal spine, no ventral spine (in this respect similar to C. mwabvui Enghoff, 2014 (fig. 6C in Enghoff 2014 1); setiferous tubercles not prominent, on small extensions of the marginal ridge (‘ravelins’).
LIMBUS ( Fig. 1 G View FIGURE 1 ) divided into almost equilateral rounded-triangular lobes.
GONOPOD COXA ( Fig. 1 A–D View FIGURE 1 ). About 3 × as long as wide. Lateral margin with two shallow concavities, at ca. ¾ of its length with short, blunt lateral process (lp). Cucullus (cu) irregularly quadrangular, with almost right-angled apicolateral, apico-mesal and baso-mesal corners, mesal half of cucullus projecting freely. Metaplical flange (mf) ending in rather long process (mfp, Fig. 1 D View FIGURE 1 ). Mesal margin of metaplica (mp) with concavity at level of arculus. Metaplical shelf (ms) prominent, regularly rounded, projecting mesad. Metaplical shelf-spine (mss) originating from proximal (lateral) part of shelf, of medium length, shallowly sigmoid, projecting mesad. A longitudinally furrowed “fistlike” process (fp) ( Fig. 1 A, C View FIGURE 1 ) projecting mesad between ms and cu.
GONOPOD TELOPODITE ( Fig. 1 A, B, E, F View FIGURE 1 ). Solenomere (slm) without a proximal spine, subapically fluted, tip bent 180° backwards, with two rounded “bumps” in bend ( Fig. 1 F View FIGURE 1 ). Telomere small, much shorter than solenomere, distally divided into four closely juxtaposed branches:
- two laminar branches (tm1, tm2) which overlap distally, leaving a teardrop-shaped opening between their bases, - a third laminar branch (tm3) which is closely appressed to the tips of tm1 and tm2. This branch (tm3’) terminates in
a slender process (tm3’) which is freely projecting in some specimens, but tucked in between tm 1–3 in figured
specimen (due to shrinkage during preparation for SEM?)
- a slender branch (tm4) originating between base of tm1–3 and base of solenomere and projecting further distad than
the other branches (more or less parallel to tm3’ when this process is projecting freely).
| ZMUC |
Zoological Museum, University of Copenhagen |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.