Sertaneja crassitibialis, Saraiva & Hara & DaSilva, 2021

Saraiva, Nicolas Eugenio de Vasconcelos, Hara, Marcos Ryotaro & DaSilva, Marcio Bernardino, 2021, Harvestmen in the semiarid: a new genus and three new species of Pachylinae (Opiliones: Gonyleptidae) from Caatinga dry vegetation, with a cladistic analysis, Arthropod Systematics & amp; Phylogeny 79, pp. 485-507 : 485

publication ID	https://dx.doi.org/10.3897/asp.79.e66321
publication LSID	lsid:zoobank.org:pub:3C3B731E-89B4-4D1B-9E03-47BED83F8530
persistent identifier	https://treatment.plazi.org/id/EA58E870-AE35-4802-AB14-665CE6ACDB39
taxon LSID	lsid:zoobank.org:act:EA58E870-AE35-4802-AB14-665CE6ACDB39
treatment provided by	Arthropod Systematics & Phylogeny by Pensoft
scientific name	Sertaneja crassitibialis
status	sp. nov.

Treatment

3.3.4. Sertaneja crassitibialis sp. nov.

Figs 6 View Figure 6 , 7 View Figure 7 , 8 View Figure 8 , 12A View Figure 12 , 13 View Figure 13

Type locality.

BRAZIL, Ceará: Quixadá, Serra do Urucu, Santuário Nossa Senhora Imaculada Rainha do Sertão.

Type material.

Holotype. BRAZIL. Ceará: Quixadá, Serra do Urucu, Santuário Nossa Senhora Imaculada Rainha do Sertão, elev. 344 m, 19.iv.2014, DaSilva M.B. and Saraiva N.E.V., ♂ (UFPB OP-487). Paratypes. BRAZIL. Ceará: Ubajara, PARNA de Ubajara, Brejo de Altitude, 700 m, 27.i.2014, DaSilva M.B., Saraiva N.E.V. and Sampaio C., 1 ♂ (MNRJ 60614) [genitalia used for SEM]; Ubajara, PARNA de Ubajara, Rio Gameleira, 840 m, 27.i.2014, DaSilva M.B.; Saraiva N.E.V. and Sampaio C., 2 ♀ (UFPB OP-480), 1 ♀ (UFPB OP-727) [female description]; Ubajara, PARNA de Ubajara, Gr. Morcego Branco, Gr. Ubajara, Trilha Portão Planalto, 22.x.2011, DeSouza A.M., Araujo E.S., Carvalho L., 1 ♀ (MNRJ 60615); Ubajara, PARNA de Ubajara, Trilha da Samambaia, 30.iv.2018, Silvino A.C.S. and Saraiva N.E.V., 1 ♂ 1 ♀ 1 imm. (MZUSP 76646) [male dissected].

Diagnosis.

Differs from the other species by the lower density of tubercles and armature (Fig. 6A View Figure 6 ); ocularium is the tallest in the genus and bears a robust, single spine (Fig. 6C View Figure 6 ); lateral margin of DS with a large acuminate tubercle on the external row, placed close to scute area III (Fig. 6C View Figure 6 ); scute area III paramedian pair of spines slender when compared to S. bicuspidata sp. nov. (Fig. 6C View Figure 6 ); coxa IV with an unbranched, robust prodorsal apical apophysis, missing a retro-apical apophysis (Fig. 6D View Figure 6 ); trochanter IV short, square-shaped with a robust, blunt central apophysis (Figs 6D View Figure 6 , 7 View Figure 7 ); femur IV less armed; tibia IV sexually dimorphic, swollen in males (Fig. 7 View Figure 7 ); penis glans’ stylus with an angular dorso-apical projection (Fig. 8B View Figure 8 ); VP macrosetae spatulated, except for the basal MS D pair and MS E; MS B inserted very basally; and MS D pairs much apart from each other (Fig. 8 View Figure 8 ).

Description.

Holotype MALE (UFPB OP-487; Figs 6 View Figure 6 , 7 View Figure 7 ): Measurements: DSL: 4.91; DSW: 4.67; LI: 9.35; LII: 16.17; LIII: 12.44; LIV: 16.14. Dorsum (Fig. 6A, C, G View Figure 6 ): Prosoma sparsely covered by small granule-like tubercles. Ocularium twice as tall as the eye diameter, with a robust, conical spine projected anteriorly, slightly larger than the ocularium (Fig. 6G View Figure 6 ). Two pair of ozopores placed on the lateral surface, both slit shaped; lateral channel well developed, conspicuous and with small sensorial pegs. Scute area II, III and IV with a central transversal row of tubercles (Fig. 6A View Figure 6 ). Scute area III paramedian pair of spines slightly curved posteriorly in all its extension, barely reaching scute area IV (Fig. 6A View Figure 6 ). Lateral margin of DS with an external row of tubercles increasing in size posteriorly, becoming acuminated, largest one placed near scute area III (Fig. 6C View Figure 6 ). Posterior margin of DS and free tergites I-III each with a row of similar sized round tubercles. Anal operculum tuberculate. Venter: Coxae I-IV with low tubercles; coxa I with median row of enlarged tubercles. Coxa IV covered by granule-like tubercles. Chelicerae: Segment I with the posterior portion of the bulla bearing a transversal row of four tubercles. Fixed and movable fingers each with five and five to six teeth, respectively. Pedipalps (Fig. 6E, F View Figure 6 ): Trochanter inflated dorsally; ventral face with two setiferous tubercles, mesal tubercle largest. Femur with a dorsal median row of six tubercles (Fig. 6E View Figure 6 ); ventral surface with a large basal setiferous tubercle and a retro-lateral row of three tubercles on apical half. Tibial setation: mesal and lateral IiIi. Tarsal setation: mesal IIi, lateral IiIi. Legs (Figs 6D View Figure 6 , 7 View Figure 7 ): Coxae I-III each with one prodorsal and 1 retro-dorsal apophysis; coxa II retro-dorsal apophysis trifid and fused in the apex with coxa III prodorsal one. Coxa IV large, tuberculate, bearing a robust, unbranched prodorsal apical apophysis, this almost transversally inserted, slightly curved downwards and posteriorly (Fig. 6A, C, D View Figure 6 ). Trochanter IV with a robust, slightly bifid, blunt central apophysis, a prodorsal sub-apical enlarged tubercle, and an acuminated, straight retro-apical apophysis (Figs 6D View Figure 6 , 7 View Figure 7 ). Femur III with an enlarged retro-apical dorsal spine; ventral face with a pro- and retro-lateral rows of tubercles increasing in size apically on apical half. Tibia III sub-apical surface slightly swollen, with retro-ventral sub-apical row of enlarged tubercles. Femur IV slightly curved inwards and upwards; dorsal surface covered by small tubercles, with a pair of paralateral apical spines slightly curved upwards (prolateral spine largest) (Fig. 7A View Figure 7 ); lateral rows of tubercles slightly increasing in size apically, retro-lateral row largest; with pro and retro-ventral rows that increase in size apically, proventral row largest and with tubercles more close to each other (Fig. 7C View Figure 7 ); apically with a pair of paralateral spines, prolateral largest (Fig. 7C View Figure 7 ). Patella IV tuberculate, with a slightly swollen retro-dorsal apical spine (Fig. 7A View Figure 7 ). Tibia IV swollen at apical 3/4 of its length, with a proventral and retro-ventral row of enlarged sub-apical tubercles, and a pair of paralateral ventro-apical spines (Fig. 7B, C, D View Figure 7 ). Tarsal counts: 6, 8, 6, 6. Penis (UFPB OP-171; Fig. 8 View Figure 8 ): VP apex slightly concave, lateral margin sub-straight. Proximal portion of VP with four pairs MS A and one pair MS B placed far from A4 and placed more basally. MS C set apically curved and showing asymmetry between left (3) and right (2) sides (Fig. 8A View Figure 8 ). MS D apical pair flattened and acuminate, basal spine conical and blunt; and two pairs of MS E placed more ventrally and close to MS C and MS D (Fig. 8B View Figure 8 ). Coloration: DS predominantly dark grayish yellowish brown (81) with scute areas limits, area III paramedian spines, and specks on prosoma dark orange yellow (72). Chelicerae, pedipalps, coxae I-III, and legs I-III dark yellow (88). Leg IV dark grayish yellowish brown (81).

FEMALE (UFPB OP-727; Fig. 6B View Figure 6 ): Measurements: DSL: 4.70; DSW: 4.26; LI: 8.88; LII: 15.36; LIII: 11.19; LIV: 14.81. Dorsum: Overall less developed armature and tubercles. DS alpha (α), coda slightly longer. Ocularium spine slender. Scute area III central armature small. Lateral margin of DS with external row of smaller tubercles than in male. Legs: Coxa IV narrower and shorter than in male, with an obliquely inserted, slender, conical, prodorsal apical apophysis, slightly curved downwards. Trochanter III retro-apical apophysis reduced. Trochanter IV narrower than in male, prolateral face unarmed, retro-lateral face as in males but with smaller apical apophysis. Femur III with ventral rows of small tubercles. Femur IV less armed, ventral rows of tubercles slightly increasing in size apically, dorso- and ventro-apical pair of spines small. Patella IV prodorsal apical projection reduced. Tibiae III-IV unarmed, not inflated. Tarsal counts: 6, 7, 6, 6.

Variation.

Males (n = 3): Measurements: DSL: 4.91-4.99; DSW: 4.67-4.90; LI: 8.98-10.08; LII: 15.31-16.17; LIII: 11.58-12.44; LIV: 16.14-16.34. Dorsum: Ocularium spine more, or less acute. DS lateral margin external row of rounded to acuminate tubercles, becoming almost spine-like. Scute area II with tubercles placed near the lateral margins. Legs: Tibia IV retro-ventral apical spine single or bifid. Tarsal counts: 6, 8-9, 6, 6. Females (n = 5): Measurements: DSL: 4.61-4.75; DSW: 4.20-4.55; LI: 8.56-9.45; LII: 13.93-15.97; LIII: 10.25-11.28; LIV: 14.80-15.52. Pedipalps: Pedipalp tibial setation: mesal IiIi/IIi, lateral IiIi; tarsal setation: mesal IIi, lateral IiIi/Iiii. Legs: Femur IV proventral row of tubercles slightly enlarged or not. Patella IV with or without prodorsal apical projection. Tarsal counts: 5-6, 8-9, 6, 6.

Etymology.

‘Crassi-’ is a Greek adjective, meaning thick, and ‘tibia’ is the Latin noun meaning the podomere; combined to ‘crassitibia’ (nom. sing. fem.) in reference to the diagnostic male tibia IV of the species.

Distribution (Fig. 13 View Figure 13 ).

Brejos de Altitude humid montane forests of Ibiapaba mountains and Caatinga shrublands and dry forests of northern interior Ceará.