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 Author Benedetti, Alipio Rezende Departamento de Zoologia, Instituto de Biociencias, Universidade de Sao Paulo, Caixa Postal: 11.461, 05422 - 970, Sao Paulo, SP, Brazil & Instituto Federal de Minas Gerais, campus Sao Joao Evangelista, Av. Primeiro de Junho, 1043, Sao Joao Evangelista, MG, Brazil alipiobenedetti@gmail.com Author Pinto-da-Rocha, Ricardo https://orcid.org/0000-0002-3959-2205 Departamento de Zoologia, Instituto de Biociencias, Universidade de Sao Paulo, Caixa Postal: 11.461, 05422 - 970, Sao Paulo, SP, Brazil text Arthropod Systematics & amp; Phylogeny 2022 2022-08-16 80 309 388 http://dx.doi.org/10.3897/asp.80.e73829 journal article http://dx.doi.org/10.3897/asp.80.e73829 1864-8312-80-309 D5C0468B99A14EF39237D9BC51A8BDA3 11907D1B6F665D96B5FD2F9751431366 3.15. Ayacucho pasolinii sp. nov. Figs 2E , 7G, H , 12E, F , 22A , 28 Description. MALE: Measurements ( n =1) DSW: 3.2; DSL: 3.6; CL: 1.2. FIVL: 5.4. ChL: 1.0. Coloration : (Fig. 22G ) Carapace, chelicerae, pedipalpus, legs and central part of areas of dorsal scutum brown; darker spots behind and laterally to the ocularium. Lateral parts and tubercles of areas of DS and lateral margins of DS with yellowish spots. Spines of area III black. Free tergites I-III yellowish. Dorsum : (Fig. 2E ) Alpha-type DSS, with shallower constrictions (especially constriction II, almost faint). Anterior margin of carapace with median elevation, almost smooth, with very few granules scattered. Ocularium with a median depression little sharped; a pair of spines, with granules in high density in the base. Carapace with few granules concentrated in the lateral regions. Areas I-II and IV with few granules scattered; III with greater quantity of granules than other scutal areas; I-II with a median pair of small tubercles; III totally granulate, with two spines, directed backwards, located at the highest point of the integument; IV with a median pair of small tubercles. Posterior margin of DS smooth with a pair of small median tubercles. Free tergites I-II without granules, with two-three median tubercles. Free tergite III with a pair of large median acuminate tubercles and a pair of smaller lateral acuminate tubercles. Lateral margins of DS with few granules covering its entire length. Chelicerae : (Fig. 2E ) Slightly swollen. Segment I densely covered with granules. Segment II smooth, with four teeth. Segment III with three teeth. Pedipalpus : dorsal region of the femur, tibia and patella granular. Trochanter with two ventroapical setiferous tubercles. Femur with a row of five ventral setiferous tubercles, except in the apical portion. Tibia: retrolateral iIII, prolateral IiII. Tarsus: retrolateral Iiii, prolateral Iiii. Venter : Coxae I-IV densely covered with granules and small tubercles throughout their surface. Genital area, anal operculum and free sternites granulate. Legs : (Figs 2E , 7G, H ) Coxae I-II each one with a prolateral and a retrolateral apophysis; III with a prolateral apophysis, fused with retrolateral apophysis of coxa II; IV smooth. Trochanters I-IV unarmed and few granulate. Femora I-II unarmed and with small granules; III with a ventral retrobasal row of three tubercles; IV with dense granulation; a retrolateral row of eight-nine acuminate tubercles, growing apically occupying the distal ⅓; a prolateral row of seven acuminate tubercles, smaller than those in retrolateral row, covering the distal ⅓; a prodorsal row of eight small tubercles, extending over the distal ⅓; two ventral rows of nine acuminate tubercles each one on the distal half. Patellae I-III unarmed, with few granules; IV granular, with three tiny dorsoapical acuminate tubercles. Tibiae I-IV unarmed and densely granular. Tarsal segmentation: (n=1) 7, 13, 10, 11. Penis : (Fig. 12E, F ) VP rectangular; distal margin straight; sinuous in lateral view. MS C1-C4 apical long and slightly curved; MS A1-A2 median long and straight (shorter than MS C); MS B1 basal (near the lateral sacs) short and straight. Lateral sacs long, robust and apically blunt, with long T3-like microsetae. Stylus apically inflated, with slight ventral projection and small projections at the apex. Dorsal process long, cylindrical and apically acuminated. Promontory straight. - FEMALE: Measurements ( n =2) DSW: 3.1; DSL: 3.7-4.0; CL: 1.5-1.7. FIVL: 5.5-5.7. ChL: 1.5-1.6. Chelicerae slightly smaller than in male. Femur IV armed, but tubercles smaller than in males. Tarsal segmentation: (n=2) 7, 12-13, 9-10, 10-11. Figure 8. Male trochanter-tibia IV of leg IV of Ayacucho , dorsal and ventral view, respectively. A - B A. uniseriatus (Roewer, 1959) comb. nov. ; C - D A. vargasllosai sp. nov. ; E - F A. weyrauchi (Roewer, 1952) comb. nov. ; Legend bars = 1 mm. Diagnosis. It differs from other species of the genus by the set of following characteristics: dorsal scutal area III with a pair of long spines (Fig. 2E ; also present in A. spielbergi sp. nov. ); longer legs (ratio between FIVL and DSL greater than 1; 1.5 in A. pasolinii sp. nov. ); yellowish spots on the lateral margins of the DS, lateral portions and tubercles of the scutal areas I-IV (Fig. 22A ). Figure 9. Male trochanter-patella/tibia IV of Incasarcus . A - B Trochanter-tibia IV of I. argenteus Kury & Maury, 1998, dorsal and ventral view, respectively; C - D Trochanter-tibia IV of I. dianae Kury & Maury, 1998, dorsal and ventral view, respectively; E-F Trochanter-tibia IV of I. pictus Kury & Maury, 1998, dorsal and ventral view, respectively; G - H Trochanter-tibia IV of I. viracocha Kury & Maury, 1998, dorsal and ventral view, respectively; I Trochanter-patella of I. viracocha , lateral view; J Trochanter-patella of I. ochoai Kury & Maury, 1998, large male, dorsal view; K - L Trochanter-tibia of I. ochoai , small male, dorsal and ventral view, respectively; M Trochanter-patella of I. ochoai , large male, lateral view; N Trochanter-patella of I. ochoai , small male, lateral view; Legend bars = 1 mm. Derivatio nominis. The specific epithet of masculine gender, in the genitive form, dedicated to the Italian writer and filmmaker Pier Paolo Pasolini (1922-1975). Distribution. (Fig. 28 ) PERU. Pasco. Oxapampa, Parque Nacional Yanachaga-Chemillen . Material examined. Type material : Holotype ♂ , ' PERU , Pasco , Oxapampa , Parque Nacional Yanachaga-Chemillen , 10°32′42.1″S 75°21′24.4″W , 22/IV/2011 , R. Pinto-da-Rocha , A. Benedetti , J. Ochoa & D. Silva leg. (MUBI) - Paratypes 2 ♀ , 'ditto' (MZSP 36993).