Nepalella labolensis, Mikhaljova, 2022

Mikhaljova, Elena V., 2022, Contributions to the millipede fauna of China: five new species of the genus Nepalella Shear, 1979 (Diplopoda, Chordeumatida, Megalotylidae), Zootaxa 5196 (3), pp. 388-406 : 396-398

publication ID	https://doi.org/ 10.11646/zootaxa.5196.3.4
publication LSID	lsid:zoobank.org:pub:443E7AE5-6131-48CC-9F1E-271DDA16B028
DOI	https://doi.org/10.5281/zenodo.7235170
persistent identifier	https://treatment.plazi.org/id/03CF2E1B-FFB4-F976-FF49-8EF004ACFDB4
treatment provided by	Plazi
scientific name	Nepalella labolensis
status	sp. nov.

Treatment

Nepalella labolensis sp. nov.

Figs 33–46 View FIGURES 33–38 View FIGURES 39–42 View FIGURES 43–46

Material examined. Holotype: male ( ZMUM), China, Yunnan [Province], N Weixi, left tributary of Luozhuahe, [Yezhi Town], 6.45 km NW Laboluo Village , 27˚43′49′′ N, 98˚56′53′′ E, H= 3890 m, 16.06.2015, leg. I. Belousov, I. Kabak, G. Davidian.

Diagnosis. Differs from congeners mainly by the posterior gonopod colpocoxite with a long, apical, flattened and caudally curved process (lp) couple with a subapical, thin, somewhat curved, mesal process (mp) and a bushlike structure (b) occupying the entire length of the colpocoxite posterior surface ( Figs 41, 42 View FIGURES 39–42 , 45, 46 View FIGURES 43–46 ).

Description. Male. Length in alcohol about 27 mm, width about 3.5 mm with paraterga. Coloration in alcohol bright brown dorsally, with light brown blurry spot on each paratergite. Venter and basal parts of legs pallid. Distal parts of legs marbled brownish. Head and collum marbled brown. Antennae brown. Eye patches black. Posterior gonopod telopodites white.

Body with 30 rings (including telson). Head sparsely setose. Antennae very long and slender. Eye patches triangular, with about 30 ommatidia. Collum semicircular. Both collum and ring 2 narrower than head with genae. Ring 2 somewhat wider than collum. Body width gradually increasing until ring 7, body parallel-sided on rings 8–20(21), thereafter gradually tapering. Paraterga beginning on ring 2, well developed on rings 6–24, poorly developed on ring 25, reduced on ring 26, onward missing. Metazonital macrochaetae in a transverse row on rings 28 and 29, like an extended (to different degrees) triangle on preceding rings. Caudolateral (exterior after Spelda 2001) macrochaetae longest, anterolateral (median after Spelda 2001) and medial (interior after Spelda 2001) ones subequal in length. All macrochaetae pointed. Axial suture well-developed.

Legs long and slender. Leg pairs 1 and 2 typically reduced in size, with usual tarsal brushes. Other pregonopodal legs just barely enlarged. Starting from legs 3, walking legs with small, abundant, as funnels with operculum, tarsal papillae ( Fig. 33 View FIGURES 33–38 ); their quantity gradually decrease toward end of body. Legs of midbody with tarsal papillae occupying about 2/3 of the tarsus length. Hindmost legs without tarsal papillae.

Claws invariably long, sabre-shaped. Claws of pregonopodal and postgonopodal legs, including legs 10 and 11, at base with two small additional claws dorsally only ( Fig. 35 View FIGURES 33–38 ). Femora 3 and 4 with low protuberance (f) ( Figs 34, 36 View FIGURES 33–38 ).

Legs 10 and 11 with coxal glands ( Figs 38 View FIGURES 33–38 , 39 View FIGURES 39–42 ). Prefemur 11 with a basal, digitiform, partly papillate process (d) ( Figs 37, 38 View FIGURES 33–38 ). Sternum 11 frontally with a longitudinal roller widened at its base.

Anterior gonopods reduced, sternum with a median lobe (ml) with the rectangular base and subquadrate apex; coxites (cxi) of medium length, curved, hornlike ( Figs 40 View FIGURES 39–42 , 43, 44 View FIGURES 43–46 ). Posterior gonopod colpocoxite erect, apically with a long, flattened process (lp) curved caudolaterad; lateral edge of the process lp curved caudad as a blade ( Figs 42 View FIGURES 39–42 , 45 View FIGURES 43–46 ). The entire length of the colpocoxite posterior surface occupied by a narrow, longitudinal, bush-like structure (b); angiocoxite (a) with a mesal blade (mb) and basal blade (bb) curved caudad. In frontal view the colpocoxite with a tongue-like, wrinkled blade (bl) along its length and a slender subapical mesal process (mp) ( Figs 41 View FIGURES 39–42 , 46 View FIGURES 43–46 ). Angiocoxite (a) convex, pear-shaped on anterior face. Posterior gonopod telopodites large; telopoditomere 1 very densely setose on its frontal face.