Thyropygus planispina, Pimvichai & Enghoff & Panha & Backeljau, 2016

Pimvichai, Piyatida, Enghoff, Henrik, Panha, Somsak & Backeljau, Thierry, 2016, A revision of the Thyropygus allevatus group. Part V: Nine new species of the extended opinatus subgroup, based on morphological and DNA sequence data (Diplopoda: Spirostreptida: Harpagophoridae), European Journal of Taxonomy 199, pp. 1-37 : 23-25

Thyropygus planispina sp. nov.

urn:lsid:zoobank.org:act:2F5A25A4-44CC-4B93-AC17-9A9B6E6E9E1F

Fig. 7 A–E

Diagnosis

A species of the opinatus subgroup. Differs from all other species in the subgroup by having the lateral process of the anterior coxal fold (alp) regularly curved, terminating in a sharp spine pointing slightly distad, and by having the tibial spine (ti) short and flattened.

Etymology

The name is a Latin noun in apposition and refers to the flattened tibial spine (ti).

Material examined

Holotype THAILAND: ♂, Krabi Province, Muang District, Tham Sua temple , 8°07'30" N, 98°55'30" E, 15 Jan. 2012, leg. P. Pimvichai, C. Sutcharit and members of the Animal Systematics Research Unit ( CUMZ-D00088 ).

Paratypes THAILAND: 3 ♀♀, same data as holotype ( CUMZ-D00097 ).

Description

Adult male with 64 podous rings, no apodous rings. Length 13 cm, width 7.6 mm. Adult females with 60–63 podous rings, no apodous rings. Length 13–14 cm, width 7.8–8.6 mm. Colour in life unknown; preserved specimens with head, antennae, legs, metazona, epiproct, paraprocts and hypoproct brown; prozona yellowish brown.

GONOPODS ( Fig. 7 A–E). Anterior coxal fold (ac; Fig. 7A ): lateral process (alp) regularly curved, terminating in sharp spine pointing slightly distad, with lateral short, sharp crest at middle of alp ( Fig. 7C , arrow); mesal process (amp) slightly shorter than alp, flattened, straight, directed distad. Posterior coxal fold (pc; Fig. 7B ) basally with moderately high lateral paracoxites (px), distally truncate, forming shelf for accommodation of telopodite, mesal process (pmp) triangular, directed distad, lateral process (plp) erect, digitiform. Telopodite ( Fig. 7 D–E) leaving coxite over shelf of posterior coxal fold; femoral spine double, fe 1 very long, curved downward, situated above fe 2, in situ resting at middle of alp, fe 2 long, very slender, curved downward; tibial spine (ti) flattened, short, curving mesad; apical part: spatulate lobe (sl) small, rounded; with slender, long spine (sls) at base of apical part; palette (pa) simple, gutter-like, distally with about nine brownish blepharochaetae (bp).

DNA barcode

The GenBank accession number of the barcode of the holotype is KU306521 (voucher code CUMZ-D00088).

Distribution ( Fig. 12 )

Known only from the type locality.

Figures

Fig. 7. Thyropygus planispina sp. nov., from Tham Sua temple, holotype (CUMZ-D00088), ♂, gonopods. A. Anterior view, left telopodite removed. B. Posterior view, left telopodite removed. C. Lateral view. D. Left telopodite, posterior-mesal view. E. Left telopodite, anterior-lateral view.

Fig. 12. Known distribution of the species of the T. opinatus subgroup.