Tidops nisargani, Chagas-Junior, Amazonas, 2011

Chagas-Junior, Amazonas, 2011, A review of the centipede genus Tidops Chamberlin (Scolopendromorpha, Scolopocryptopidae, Newportiinae), International Journal of Myriapodology 5, pp. 63-82 : 68-70

Tidops nisargani sp. n. Figures 823

Type specimens.

Holotype (MNRJ 15350), BRAZIL, Bahia, Porto Seguro, Arraial d’Ajuda, 2006 (without specific day and month of collect), Chagas-Jr, A.; Paratypes (MNRJ 15351) 4 specimens, Bahia, Porto Seguro, Arraial d’Ajuda, 2005, Chagas-Jr, A. & Segal, B.; (MNRJ 15499) 7 specimens, Bahia, Porto Seguro, Arraial d’Ajuda, 24-27-ii-2005, Expedição Arachné; (MNRJ 15349) 6 specimens, Bahia, Porto Seguro, Trancoso, 19-vi-2005, Chagas-Jr, A., Segal, B. & Vasconcelos, E.

Additional material. BRAZIL: (MNRJ 15353) 1 specimen, Amazonas, Manaus, i-2001, Pedroso, D.; (MPEG) 6 specimens, Pará, Marabá, Benfica, 15-iii-2003/25-iv-2003, J. Mathieuz & M. Martins; (MNRJ 15352) 11 specimens, Bahia, Alcobaça, Fazenda Santa Bahia, 27-28-II-2005, Expedição Arachné; (MNRJ 15354) 9 specimens, Bahia, Porto Seguro, Arraial D’Ajuda, 24-27-II-2005, Expedição Arachné; (MNRJ 15509) 3 specimens, Bahia, Una, REBIO de Una, 08-10-vi-2009, Chagas-Jr, A., Kury, A., Pedroso, D., Giupponi, A. & Dill, V.; (MNRJ 15510) 1specimen, Bahia, Jequié, Brejo Novo, 06-07-vi-2009, Chagas-Jr, A., Kury, A., Pedroso, D., Giupponi, A. & Dill, V.; (MNRJ 15511) 3 specimens, Bahia, Camacan, RPPN Serra Bonita, 11-13-vi-2009, Chagas-Jr, A., Kury, A., Pedroso, D., Giupponi, A. & Dill, V.; (MNRJ 15512) 3 specimens, Bahia, Una, REBIO de Una, 08-10.vi.2009, Chagas-Jr, A., Kury, A., Pedroso, D., Giupponi, A. & Dill, V.; (MNRJ 15513) 3 specimens, Bahia, Porto Seguro, Parque Nacional do Pau Brasil, 14-17-vi-2009, Chagas-Jr, A., Kury, A., Pedroso, D., Giupponi, A. & Dill, V.; (MNRJ 15514) 3 specimens, Bahia, Porto Seguro, Parque Nacional do Pau Brasil, 14-17-vi-2009, Chagas-Jr, A., Kury, A., Pedroso, D., Giupponi, A. & Dill, V.; (MNRJ 15515) 8 specimens, Bahia, Camacan, RPPN Serra Bonita, 11-13-vi-2009, Chagas-Jr, A., Kury, A., Pedroso, D., Giupponi, A. & Dill, V.; (MNRJ 15516) 1 specimen, Bahia, Camacan, RPPN Serra Bonita, 11-13-vi-2009, Chagas-Jr, A., Kury, A., Pedroso, D., Giupponi, A. & Dill, V.

Etymology.

The specific epithet refers to the “Sítio Nisargan" in Arraial d’Ajuda, Bahia, where the new species was collected and where I lived from 2004 to 2006.

Diagnosis.

Prefemur of the ultimate legs with four larger spinous processes, femur and tibia without ventral and medial spinous processes; femur and tibia without cylindric process at ventral corner of distal end, but tarsus 1 with a small expansion at ventral corner of distal end; tibia shorter than femur; tarsus 2 with 9 to 15 “pseudoarticles”. The tooth plates longer than wide. The anterior margin of the tooth plates is straight with the lateral sides longer than the medial sides; the inner face of each dentiform tooth plate is concave like a longitudinal section of a cylinder. Coxopleural process moderately long

Description.

Body length: 22 to 28 mm (without ultimate legs); body in general yellowish (Figure 8). Cephalic plate and forcipular coxosternum brownish; antennae and legs yellowish. Cephalic plate smooth, with a short median suture on the anterior margin and a paired of short paramedian short sutures arising from posterior margin which overlies the first tergite (Figure 9).

Antennae composed of seventeen articles, first three (or four) articles glabrous, but with some long bristles, the succeeding ones becoming more densely clothed with fine short hairs (Figure 10).

Anterior margin of the forcipular coxosternum straight and narrow. The sides of the dentiform tooth plates are straight with the lateral sides longer than the medial sides; the anterior margins are concave (Figure 12). Forcipular coxosternum without sutures; none of the articles of forcipula armed; Tarsungula short and stout, apices alone overlapping in closed position (Figure 11).

Tergites smooth; first tergite with a very distinct anterior transverse sulcus which strongly bends back in an angle at middle, to which is attached a median W-shape sulcus, from each of the posterior apices of which a pair of longitudinal sutures continue to the posterior margin of the tergite (Figure 9). There is a shallow depression in the middle of the anterior transverse sulcus and in the median W-shape. Tergites 2-22 with complete paramedian sutures and tergites 3-19 with lateral longitudinal sutures on the anterior two-thirds of each tergite (Figure 13). Only the 23rd tergite marginated. Margin of tergite 23 truncated medially and concave on each side, without a median sulcus, but with a shallow median depression (Figure 14).

Sternites smooth, longer than wide. With a large endosternite, well marked off by a transverse sulcus from the sternites 3-15, extending backwards under the sternites for one-third the length of the later (Figure 15). Sternites 3-21 with a median longitudinal sulcus; sternites 2-21 with two very distinct incomplete longitudinal lateral sutures separating off a narrow area at each side of the anterior portion of the sternites (Figure 15). Sternite 23 shorter than preceding, without sulci, lateral margin slightly convex and converging posteriorly; posterior margin straight, with corners rounded (Figure 16).

Coxopleural process moderately long, with an acute apex (Figure 17). No lateral spines; dorsal and ventral surface of the coxopleuron bearing two long setae. Pores numerous, moderate-sized, evenly covering most of the surface of the coxopleuron (Figure 17).

Legs 1 to 21 with tarsi undivided (Figures 18 and 19), 22nd and 23rd divided. Tibia of the locomotory legs 3 to 20 with lateral distal spurs (holotype) (Figure 20), some specimen without. In all specimens from Amazonas and Pará the tibia of the locomotory legs lack a tibial spur. Ultimate legs slender and with many setae, article s usually longer than the articles of the ultimate legs of Tidops simus and Tidops balzanii (Figure 21); prefemur of the ultimate legs with a series of four large ventral processes (Figures 17 and 22) and a series of six or seven setae dorsomedially; femur and tibia without ventral or medial processes or spines, only with fine setae; tibia shorter than femur; femur and tibia without cylindric process at ventral corner of distal end; tarsus 1 short with a small expansion on the ventral corner of distal end (Figure 23); tarsus 2 divided into 9 to 15 distinct tarsomeres or “pseudoarticles”.

Type locality.

Sítio Nisargan, Arraial d’Ajuda, Porto Seguro, state of Bahia, Brazil.

Distribution.

Brazil (Amazonas, Pará and Bahia).