Thyropygus inflexus ( Demange, 1989 ) Demange, 1989

Pimvichai, Piyatida, Enghoff, Henrik & Panha, Somsak, 2009, A revision of the Thyropygus allevatus group. Part 1: the T. opinatus subgroup (Diplopoda: Spirostreptida: Harpagophoridae), Zootaxa 2016, pp. 17-50 : 33-34

Thyropygus inflexus ( Demange, 1989) , n. comb.

( Figs. 9 A–E)

Cornugonus inflexus Demange, 1989: 780

Material: HOLOTYPE male THAILAND, Kanchanaburi Province, Sai Yok district, 14 ° 6 ˏ 56 ˝ N, 99 ° 8 ˏ 40 ˝ E. 16 June 1986. L. Deharveng leg., ( MNHN).

Diagnosis: A species of the opinatus subgroup. Spatulate lobe (sl) at the apical part of telopodite expanded, smooth and without a spine. Similar in this respect to T. bearti , T. chelatus , T. cristagalli , T. brachyacanthus , T. loxia and T. bispinus . Differs from the first five of these species by the mesal process of the anterior coxal fold (amp) being longer than the lateral process of anterior coxal fold (alp). Particularly similar to T. bispinus , differing from it by alp apically with a crest extending caudad and ending in a small spine ( Fig. 9 C, arrow), amp apically irregularly tuberculate, the absence of telopodite lobe (lo), and having a small spine (ss) at base of apical part, opposite the origin of tibial spine.

Description: Adult male with 69 podous rings, no apodous rings. Length ca. 13 cm (broken), width ca. 7.0 mm. Color in life unknown; preserved specimen with prozona, epiproct, and paraprocts whitish-brown, Head, antennae, legs, metazona, tip of epiproct, margins of paraprocts, and hypoproct brown.

Gonopods ( Figs. 9 A–E): Anterior coxal fold (ac) ( Fig. 9 A): lateral process (alp) long, slender, regularly curved, in anterior view sickle-shaped, apically with a crest extending caudad and ending in a small spine ( Fig. 9 C, arrow); mesal process (amp) slightly longer than lateral process (alp), protruding from middle of mesal margin of ac, apically irregularly tuberculate. Posterior coxal fold (pc) ( Fig. 9 B) basally with moderately high lateral paracoxites (px); mesal process (pmp) slender, directed distolaterad; lateral process (plp) damaged on both sides of unique specimen. Telopodite ( Figs. 9 D–E): Femoral spine (fe) flattened, short, lying close to top of telopodite; tibial spine (ti) very long, curving in horizontal plane; spatulate lobe (sl) basally slender, distally broadly expanded, with inner lateral margin arched; a small accessory lobe (al) at base of sl; and a small slender spine (ss) at base of apical part, opposite the origin of the tibial spine; palette (pa) simple, gutter-like, distally with about seven brownish blepharochaetae (bp).

Distribution ( Fig. 20): Described from THAILAND, Kanchanaburi [Kanchanabrui], without an exact locality ( Demange, 1989). The more precise locality of the holotype, which is the only known specimen, is Kanchanaburi Province, Sai Yok district (L. Deharveng, personal communication).

Figures

FIGURE 9. Thyropygus inflexus, holotype, gonopods. A: anterior view, left telopodite removed. B: posterior view, left telopodite removed. C: lateral view. D: left telopodite, anterior view. E: left telopodite, posterior view.