Paciwithius valduparensis, Romero-Ortiz & Sarmiento & Harvey, 2023

Romero-Ortiz, Catalina, Sarmiento, Carlos E. & Harvey, Mark S., 2023, A new genus and five new species of pseudoscorpions (Arachnida, Pseudoscorpiones, Withiidae) from Colombia, ZooKeys 1184, pp. 301-326 : 301

Paciwithius valduparensis sp. nov.

Figs 2 , 4 , 9C

Material examined.

Holotype. Colombia • ♂; Cesar, Valledupar, Ecoparque Los Besotes , campamento base; [10°34'30.0"N, 73°16'19.8"W]; 600 m; 17 Jul. 2015; CarbioTeam leg.; manual capture; ICN-APs-597.

Diagnosis.

Males of Paciwithius valduparensis sp. nov. can be separated from P. chimbilacus sp. nov. by their stouter pedipalpal femur and patella (femur: 4.10-4.35 × longer than broad in P. chimbilacus and 4.00 × in P. valduparensis ; patella: 3.33-3.43 × longer than broad in P. chimbilacus and 2.27 × in P. valduparensis ), and a slender chela (3.16-3.33 × longer than broad in P. chimbilacus and 3.52 × in P. valduparensis ).

Description.

Adults. Color: yellowish brown, darker in carapace and tergites; carapace metazone without paired pale spots; pedipalps brownish, somewhat paler than body, fingers reddish; legs yellow-brown, uniform color; all specimen heavily granulated.

Dimensions (mm): male: holotype: body length 1.84. Pedipalps: trochanter 0.28/0.18, femur 0.61/0.15, patella 0.60/0.26, chela (with pedicel) 0.94/0.26, chela (without pedicel) 0.90, hand (without pedicel) length 0.44, movable finger length 0.47. Chelicera 0.21, movable finger length 0.15. Carapace 0.66/0.52 (width at medial area). Leg I: femur 0.14/0.11, patella 0.24/0.10, tibia 0.27/0.07, tarsus 0.29/0.05. Leg IV: femur + patella 0.50/0.14, tibia 0.40/0.09, tarsus 0.35/0.05.

Carapace (Fig. 4A ): 1.26 × longer than broad; heavily granulated lateral margins convex, not posteriorly widened; without eyes; with 58 setae, distributed: 32 anterior (four near anterior margin), 18 in the mesozone, and eight near posterior margin, all clavate; with two distinct furrows; posterior furrow slightly closer to posterior carapace margin than to median furrow (Fig. 4A ).

Chelicera (Fig. 4B ): with five setae on hand, sb and b denticulate, all others acuminate; movable finger with one subdistal seta; galea simple; rallum of four blades, the most distal blade with several serrations on leading edge, other blades smooth (Fig. 4C ); two lyrifissures on dorsal and one on ventral side.

Pedipalp (Fig. 4E, H, I ): trochanter, femur, patella and chelal hand granulate, fingers smooth; dorsal setae clavate; trochanter 1.59 ×, femur 4.00 ×, patella 2.27 ×, chela (with pedicel) 3.67 ×, chela (without pedicel) 3.52 ×, hand 1.72 × longer than broad, movable finger 1.07 × longer than hand. Fixed chelal finger with eight trichobothria, movable chelal finger with four trichobothria (Fig. 4E, H ): eb and esb situated basally, as well as ib and ist; isb parallel to est both situated submedially, it midway between them and et; b and sb situated near one another, st closer to sb than to t, t situated subdistally. Venom apparatus not visible, venom ducts not visible; nodus ramosus not visible. Retrolateral margin of fixed finger with four sense-spots (Fig. 4H ), three situated linearly between esb and est, and the other between est and et. Chelal teeth squared; fixed finger with 42 teeth; movable finger with 42 teeth; accessory teeth absent.

Coxal region: coxal chaetotaxy: 10: 14: 15: 19; maxilla with 32 setae including two apical setae and one very small internal, sub-oral seta; median maxillary lyrifissure medial in position, posterior lyrifissure not visible.

Legs (Fig. 4F, G ): junction between femora and patellae I and II parallel, as well as legs III and IV; tarsal tactile seta of leg IV absent (Fig. 4G ); arolium slightly shorter than claws; claws simple. Ratios: leg I: femur 1.29 ×, patella 2.31 ×, tibia 3.78 ×, tarsus 6.00 × deeper than broad; Leg IV: femur + patella 3.44 ×, tibia 4.54 ×, tarsus 7.33 × deeper than broad.

Abdomen (Fig. 4D ): tergites I-III, X, and XI entire, the others with faint medial suture, not keeled; sternites III-VI divided, entire from VII-XI. Tergal chaetotaxy: 10: 9: 9: 9: 12: 12: 12: 11: 12: 9: 4: 2; mostly uniseriate but some tergites with a few setae placed anteriorly; all setae clavate. Sternal chaetotaxy: 10: (2) 12 (2): (1) 6 (1): 19: 16 + 6 gls: 11 + 36 gls: 9 + 97 gls: 10 + 22 gls: 9: 6: 2; sternites with many lyrifissures, X-XII with lines of peak-like waves; sternites VI-IX with patches of glandular setae (Fig. 9C ); glandular setae in extended patches (Fig. 9C ); setae uniseriate and mostly acuminate, but some clavate in the lateral region of sternites VIII to XII; without paired invaginations on anterior margins of sternites.

Genitalia: see Romero-Ortiz and Sarmiento (2021) as "nr. Victorwithius msp. 2".

Etymology.

This species is named after the city in which it was found. The Valledupar demonym is valduparensis. This is considered the place where the vallenato music was born. The specific epithet is an adjective.

Figures

Figure 2. Distribution of the new species and the new record of Withiidae from Colombia.

Figure 4. Paciwithius valduparensis sp. nov. (male holotype, ICN-Aps- 597) A carapace B chelicera C rallum D abdomen, sternites E right chela F left leg I G left leg IV H right chelal fingers (arrows show sense-spots) I left pedipalp. Abbreviations: Pedipalp movable finger: b = basal; sb = sub-basal; st = sub-terminal; t = terminal; fixed finger: eb = exterior basal; esb = exterior sub-basal; est = exterior sub-terminal; et = exterior terminal; ib = interior basal; isb = interior sub-basal; ist = interior sub-terminal; it = interior terminal. Cheliceral setae: b = basal seta; es = exterior seta; is = interior seta; ls = laminal seta. Scale bars: 0.5 mm (I); 0.1 mm (A, D-H); 0.05 mm (B); 0.0125 mm (C).

Figure 9. Glandular setae patches of the new species A Paciwithius chimbilacus sp. nov. (holotype, ICN-Aps- 076) B Parawithius bromelicola sp. nov. (holotype, ICN-Aps- 082) C Paciwithius valduparensis sp. nov. (holotype, ICN-Aps- 597) D Cystowithius florezi sp. nov. (holotype, ICN-Aps- 07) E, F Oligowithius achagua sp. nov. E male paratype (ICN-Aps- 388) F male holotype (ICN-Aps- 388). Scale bars: 0.1 mm (A-C, E, F); 0.05 mm (D).