Tschaidicancha weyrauchi Roewer, 1957

Benedetti, Alipio Rezende & Pinto-da-Rocha, Ricardo, 2022, Systematic revision and total evidence phylogenetic analysis of the Andean family Metasarcidae Kury, 1994 (Opiliones: Laniatores), with description of two new genera and twenty new species, Arthropod Systematics & amp; Phylogeny 80, pp. 309-388 : 309

publication ID	https://dx.doi.org/10.3897/asp.80.e73829
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scientific name	Tschaidicancha weyrauchi Roewer, 1957
status

Treatment

3.53. Tschaidicancha weyrauchi Roewer, 1957

Figs 6F View Figure 6 , 11M, N View Figure 11 , 14K, L View Figure 14 , 27E, F View Figure 27 , 29A View Figure 29

Tschaidicancha weyrauchi Roewer, 1957: 81 (desc.), fig. 11 (female dorsal habitus), 12 (female pedipalpus), 13 (female apical femur-patella IV); Soares, Soares and Jim 1992: 13 (cat.); Kury and Maury 1998: 145 (cit.); Kury 2003: 144 (cat.).

Redescription.

MALE: Measurements (n =2) DSW: 3.7-4.0; DSL: 3.7; CL: 1.5-1.6. FIVL: 6.8-7.7. ChL: 2.7. Coloration: (Fig. 27E View Figure 27 ) Chelicerae orange. Pedipalpus light brown. Dorsal scutum and legs dark reddish brown. Dorsum: (Fig. 6F View Figure 6 ) Kappa-type DSS. Anterior margin of the carapace with median elevation, with few granules. Ocularium with sharp median depression; a pair of long spines. Carapace with sparse granules, most in the region posterior to the ocularium. Area I undivided longitudinally; with four tubercles. Area II with six tubercles. Area III with 6-7 sparse granules; two long spines facing backwards, located in elevations of the integument, very granulate. Area IV with five tubercles. Posterior margin of the DS with three granules. Free II-I tergites with irregular rows of granules. Free tergite III smooth; with a lateral pair of large spiniform tubercles. Chelicerae: (Fig. 6F View Figure 6 ) Segment I densely granular; with 2-3 dorsobasal tubercles. Segment II with small granules; finger with four teeth. Segment III with three teeth. Pedipalpus : Trochanter with a long ventroapical setiferous tubercle. Femur with a row of 4-5 long ventral setiferous tubercles and a small proapical tubercle. Patella with a small proapical tubercle. Tibia: retrolateral iIII, prolateral IIII. Tarsus: retrolateral iIiIi, prolateral iIiIi. Venter: Coxa I with a median row of four long tubercles. Coxa II with an apical broad base tubercle. Coxae III-IV with scattered granules. Genital area smooth. Free sternites with row of granules. Anal operculum granular. Legs: (Figs 6F View Figure 6 , 11M, N View Figure 11 ) Coxae I-II each with a prolateral and a retrolateral apophysis. Coxa III unarmed. Coxa IV with sparse setiferous granules. Trochanters I-III unarmed and granular. Trochanter IV ventrally with few granules; a proapical tubercle. Femora I-III unarmed and with small granules. Femur IV with small sparse granules; a dorsal row 8-9 granules from the base to half of the femur, which gives rise to a row of eight long acuminate tubercles, varying in size, extending to the apex. Ventrally with a retrolateral and prolateral row of granules from the apex to half of the femur, followed by seven tubercles, growing in size apically, which are long and acuminated. Patellae I-III unarmed. Patella IV with a long retrodorsal acuminate tubercle; a median dorsal acuminate tubercle; an apical prodorsal acuminate tubercle; small tubercles spread over the dorsal surface of the patella IV; a median ventral acuminate tubercle. Tibiae I-IV unarmed and smooth. Tarsal segmentation: (n =2) 8, 14, 9, 10. Penis: (Fig. 14K, L View Figure 14 ) VP subrectangular; distal margin straight; with long lateroapical projections; slightly curved in lateral view. MS C1-C2 subdistal long and straight (MS C1 bifid and MS C2 non-branched); MS A1 short and straight, medially placed; MS B1 sub basal short and straight (slightly longer than MS A). Apical region of truncus enlarged. Lateral sacs short, robust and apically blunt; with long T3-like microsetae. Stylus with swollen apex; with a dorsal and a ventral projection. Dorsal process cone-shaped. Promontory straight. - FEMALE: Measurements (n =2) DSW: 4.3-4.5; DSL: 4.3-4.5; CL: 1.7. FIVL: 7.7-8.5. ChL: 2.4. (Fig. 27F View Figure 27 ) Chelicerae slightly smaller than that of male. Femur IV unarmed. Tarsal segmentation: (n = 2) 7-8, 14-16, 6-9, 10-11.

Diagnosis.

It differs from other species of the genus by the following set of characteristics: kappa-type DSS; ocularium with a pair of long spines; scutal area I undivided; free tergite III with a pair of large spiniform tubercles (Fig. 6F View Figure 6 ); male femur IV with a dorsoapical row of acuminate tubercles; male patella IV with three long acuminate tubercles (Fig. 11M, N View Figure 11 ); chelicerae orange and body predominantly dark reddish brown (Fig. 27E View Figure 27 ). VP with long lateroapical projections (Fig. 14K, L View Figure 14 ).

Distribution.

(Fig. 29A View Figure 29 ) PERU. Huánuco. Tschaidicancha (near Huánuco); Bosque Carpish (SW Tingo Maria).

Material examined.

Type material: Holotype ♂, ' PERU, Huánuco, Tschaidicancha , near Huánuco, 2,800 m a.s.l., 2/VIII/1955, Weyrauch leg. (SMF RII 11417 View Materials /20) . Additional material: 1 ♂, 1 ♀ ' PERU, Huánuco, Bosque Carpish, southwest Tingo Maria , 2,590 m a.s.l., 09°42′46.6″S 76°05′26.7″W, 23/IV/2011, A. Benedetti, J. Ochoa, R. Pinto-da-Rocha & D. Silva leg. (MZSP 76550) GoogleMaps .