Metasarcus bergmani, Benedetti & Pinto-da-Rocha, 2022

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

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Metasarcus bergmani

sp. nov.

3.41. Metasarcus bergmani sp. nov.

Figs 5B View Figure 5 , 10C, D View Figure 10 , 19A-C View Figure 19 , 25A, B View Figure 25 , 31 View Figure 31


MALE: Measurements (n =5) DSW: 5.2-6.0 (5.2); DSL: 5.5-6.8 (5.5); CL: 2.1-2.5 (2.1). FIVL: 12.5-13.0 (12.9). ChL: 2.0-2.1 (2.1). Coloration (Fig. 25A View Figure 25 ): Chelicerae, pedipalpus and trochanters I-III yellowish green. Ocularium, anterior and lateral margin of DS, anterior part of the carapace, coxa and trochanter IV reddish. Posterior part of the carapace and areas I-IV orange, in lighter tone. Spines of area III, apophysis of coxa IV and anterior angle on area I most blackened. Granules of posterior margin of DS and free tergites I-III orange. Grooves of dorsal scutum white. Dorsum: (Fig. 5B View Figure 5 ) Gamma-P-type DSS, with concave posterior margin of DS. Anterior margin of carapace with median elevation, covered with granules. Ocularium with median depression granular, and 4-5 small tubercles near the eyes. Carapace with sparse granules. Areas I-IV covered by few granules; Area I divided by a longitudinal groove and invaded by area II; with a pair of median small tubercles. Area II and IV unarmed. Area III with a pair of median spines, parallel, directed posteriorly. Lateral margins of DS granular. Posterior margin of DS and free tergites with a row of small granules. Free tergite III with a spiniform apophysis slightly longer than the length of this tergite. Chelicerae: (Fig. 5B View Figure 5 ) Not swollen, similar to females. Segment I covered with small granules. Segment II covered with granules larger than those of segment I; finger with four teeth. Segment III with three teeth. Pedipalpus : Trochanter with a ventroapical setiferous tubercle. Femur with a ventral row of four spines and a proapical spine. Patella with a proventral small setiferous tubercle. Tibia: prolateral IiII/iIiII, retrolateral IiIIi. Tarsus: prolateral iIiIi, retrolateral iIiIi/iIiIii. Venter: Coxa I with a median row of 5-6 setiferous tubercles and small sparse granules. Coxae II-III with setiferous tubercles and sparse granules. Coxa IV with granules smaller than those on other coxae, sparsely distributed. Smooth genital area. Free sternites with few granules. Legs: (Figs 5B View Figure 5 , 10C, D View Figure 10 ) Coxae I-II each with a prolateral and a retrolateral apophysis. Coxa III unarmed. Coxa IV with a large retrolateral apophysis, curved posteriorly and laterally. Trochanters I-IV with small granules. Trochanter IV with prolateral base expanded and a retrolateral tubercle. Femora I-III straight and unarmed, with few small granules. Femur IV straight, with few sparsely scattered small granules and a small retrobasal blunt tubercle. Tarsal segmentation: (n =5) 9, 17-19 (18), 11-12 (12), 12-14 (14). Penis: (Fig. 19A-C View Figure 19 ) VP rectangular, distal margin straight and with small lateral projections; with distal laterodorsal depressions; slightly concave in lateral view. MS C1-C3 subapical long and straight; MS A1 sub basal long and straight; MS B1 basal short and straight. Lateral sacs long and robust, with large base and blunt apex; with long tapered T3-like microsetae near the base and short and flattened near the apex. Stylus long and cylindrical (apex cannot be viewed in SEM). Dorsal process absent. Promontory conspicuous and convex. - FEMALE: Measurements (n =3) DSW: 5.0-5.2; DSL: 5.2-5.3; CL: 2.0. FIVL: 12.1-11.3. ChL: 2.0-2.2. (Fig. 25B View Figure 25 ) Granulation denser than in male, mainly in the areas of the dorsal scutum. Spine of area III with multiple granules at base. Retrolateral apophysis in the coxa IV short, much shorter than in male. Trochanter IV without expansion of the prolateral base. Apophysis of free tergite III longer than in male. Tarsal segmentation: (n =3) 8-9, 16-18, 10, 11-12.


It differs from other species of the genus by having a large retrolateral apophysis on coxa IV, curved toward externally, and a short spiniform apophysis in free tergite III (Fig. 5B View Figure 5 ).

Derivatio nominis.

The specific epithet of masculine gender, in the genitive form, dedicated to the Swedish filmmaker, director, producer and writer Ernst Ingmar Bergman (1918-2007).


(Fig. 31 View Figure 31 ) BOLIVIA. Cochabamba. Near Corani.

Material examined.

Type material: Holotype ♂, ' BOLIVIA, Cochabamba, road next to Corani ,| 17°11′18.9″S 65°53′49.2″W, 01/XII/2010, R. Pinto-da-Rocha, A. Benedetti, J. Ochoa & A. Saravia leg. (CBF) GoogleMaps - Paratypes 1 ♂, 1 ♀, ‘ditto’ (CBF); Paratypes 3 ♂, 3 ♀, ‘ditto’ (MZSP 36983).