Cystowithius florezi, 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

publication ID	https://dx.doi.org/10.3897/zookeys.1184.106698
publication LSID	lsid:zoobank.org:pub:4EB4BEE3-865E-4CF2-9F7B-6477D2DEF4AF
persistent identifier	https://treatment.plazi.org/id/F2D766B6-215E-40D9-908B-76416F859F85
taxon LSID	lsid:zoobank.org:act:F2D766B6-215E-40D9-908B-76416F859F85
treatment provided by	ZooKeys by Pensoft
scientific name	Cystowithius florezi
status	sp. nov.

Treatment

Cystowithius florezi sp. nov.

Figs 1B View Figure 1 , 2 View Figure 2 , 5 View Figure 5 , 9D View Figure 9

Material examined.

Holotype. Colombia • ♂; Tolima, Juntas, Reserva Natural Ibanasca ; [4°33'22.0"N, 75°19'17.2"W]; 1700 m; 12 Feb. 2007; C. Cortes leg.; Pinus plantation; on low vegetation, manual capture; ICN-APs-077. GoogleMaps

Diagnosis.

Cystowithius florezi can be separated from the other Cystowithius species as follows. Cystowithius florezi sp. nov. is very similar to C. colombicus Harvey, 2004 and C. ecuadoricus Harvey, 2004, so we provide a detailed comparison for each one in Table 1 View Table 1 . In general, C. colombicus has bigger pedipalp segments and the patches of glandular setae located in sternites VII-IX; in C. florezi the patches are just in sternite VIII. Also, the sternal pockets are in sternites VI and VII in C. colombicus and in V-VIII in C. florezi . It differs from C. chamberlini by the chelal hand being smooth rather than strongly granulated in C. florezi , and the position of the tactile setae on tarsus IV located close to midway of the tarsus, rather than distal in C. florezi ; from C. ankeri by the length of the movable chelal finger which is longer in C. ankeri than in C. florezi (0.70 mm vs 0.52 mm); and from C. smithersi by the length of the chela with pedicel which is longer in C. smithersi than in C. florezi (1.35 mm vs 1.02 mm).

Description.

Color: with sclerotized portions, generally yellow-brown; carapace and pedipalps darker; carapace metazone with paired pale spots; legs darker at the edges (Fig. 1B View Figure 1 ).

Dimensions (mm): male: holotype: body length 1.94. Pedipalps: trochanter 0.36/0.18, femur 0.60/0.17, patella 0.61/0.18, chela (with pedicel) 1.02/0.28, chela (without pedicel) 0.96, hand (without pedicel) length 0.49, movable finger length 0.52. Chelicera 0.19, movable finger length 0.14. Carapace 0.67/0.51 (width at medial area); eye diameter 0.06. Leg I: femur 0.14/0.14, patella 0.29/0.14, tibia 0.20/0.10, tarsus 0.25/0.06. Leg IV: femur + patella 0.57/0.18, tibia 0.43/0.18, tarsus 0.34/0.07, TS 0.74.

Carapace (Fig. 5A View Figure 5 ): 1.31 × longer than broad; lateral margins convex, not posteriorly widened; with two non-corneate eyes; with 52 setae, including four near anterior margin, seven near posterior margin, 13 in the medial zone, and 32 in the anterior region; with two distinct furrows; posterior furrow slightly closer to posterior carapace margin than to median furrow (Fig. 5A View Figure 5 ); deeply granulated.

Chelicera (Fig. 5B View Figure 5 ): with five setae on hand, sb and b denticulate, all others acuminate; movable finger with one subdistal seta; galea with one sub-terminal and three terminal rami; rallum of four blades, the most distal blade with several serrations on leading edge, other blades smooth (Fig. 5I View Figure 5 ); lamina exterior present; two dorsal lyrifissures.

Pedipalp (Fig. 5E, G, H View Figure 5 ): trochanter, femur, patella and chelal hand granulate, chelal fingers smooth; setae clavate and denticulate; trochanter 2.04 ×, femur 3.81 ×, patella 3.30 ×, chela (with pedicel) 3.64 ×, chela (without pedicel) 3.42 ×, hand 1.74 × longer than broad, movable finger 1.07 × longer than hand. Fixed chelal finger with eight trichobothria, movable chelal finger with four trichobothria (Fig. 5E, H View Figure 5 ): eb and esb situated basally, as well as ib and ist; isb, it and est grouped together submedially; et near the distal end of the finger; b and sb situated near one another; st slightly closer to sb than to t; t parallel to isb. Venom apparatus not visible, venom ducts not visible in fixed finger; nodus ramosus distal to t on movable finger, not visible on fixed finger. Retrolateral margin of fixed finger with three sense-spots (Fig. 5H View Figure 5 ) situated linearly between esb and est; movable finger with small structure between t and st that contains two small nubbins. Chelal teeth rounded with an apical spot; fixed and movable finger with 32 teeth; accessory teeth absent.

Coxal region: coxal chaetotaxy: 8: 8: 8: 12, with multiple small lyrifissures; maxilla with two apical setae, one very small internal, sub-oral seta and 12 setae; median maxillary lyrifissure medial in position, posterior lyrifissure present.

Legs (Fig. 5C, F View Figure 5 ): junction between femora and patellae I and II parallel, junction in legs III and IV oblique; tarsal tactile seta of leg IV situated distally, 0.74 of tarsus length (Fig. 5F View Figure 5 ); subterminal tarsal seta acute, distal to tactile seta; arolium same level as claws. Ratios: leg I: femur 1.06 ×, patella 2.12 ×, tibia 2.13 ×, tarsus 4.43 × deeper than broad; Leg IV: femur + patella 3.09 ×, tibia 2.35 ×, tarsus 4.78 × deeper than broad.

Abdomen (Fig. 5D View Figure 5 ): all tergites divided but the first two only with a faint medial suture; all sternites entire. Tergal chaetotaxy: 8: 7: 8: 14: 15: 13: 15: 15: 15: 13: 8 (including two tactile setae): 2; mostly uniseriate but some tergites with a few setae placed anteriorly; all setae foliate, except in the last tergite; tergites densely granulated. Sternal chaetotaxy: 10: (2) 9 (2): (2) 9 (2): 12: 12: 12: 2 + 40 gls: 9: 8: 9 (including two tactile and three clavate setae): 2; only sternite VIII with a small circular patch of glandular setae (Fig. 9D View Figure 9 ); with paired invaginations on anterior margins of sternites VI-VIII (Fig. 5D View Figure 5 ).

Genitalia: see Romero-Ortiz and Sarmiento 2021 as " Cystowithius msp1".

Etymology.

This species is dedicated to Professor Eduardo Florez, considered the father of Arachnology in Colombia. He has also been the curator of the Arachnological collection of the Instituto de Ciencias Naturales, where all the material used in this study is lodged.