Thereza murutinga, Dasilva, Marcio Bernardino & Pinto-Da-Rocha, Ricardo, 2012

Dasilva, Marcio Bernardino & Pinto-Da-Rocha, Ricardo, 2012, Descriptions of Thereza murutinga sp. nov. and Pristocnemis caipira sp. nov., and new records of Caelopyginae (Opiliones: Laniatores: Gonyleptidae), Zootaxa 3317, pp. 25-38 : 28-29

Thereza murutinga sp. nov.

( Figs. 1–4 , 9–10 )

Type-material: BRAZIL. Rio de Janeiro: Parati (Estrada Parati– Cunha, 1300 m a.s.l., 23º10’37”S 44º49’54”W), M.B. da Silva and H.Y. Yamaguti leg., XI.2005, male holotype and one male paratype (genitalia examined) (MZSP 36447).

Etymology. (word) From Brazilian indigenous language, meaning “white,” in reference to the beautiful pearl color that dominates the dorsal scutum of this species.

Male description (holotype):

Measurements. Dorsal scutum: length 4.6; maximal width 4.3. Prosoma: length 1.7; width 2.5. Femur IV length 10.7.

Dorsum ( Figs. 1, 2 , 4 ). Anterior margin of dorsal scutum with scattered tubercles. Ocularium with two tubercles. Lateral margin of dorsal scutum with a row of tubercles between ozopores to area II. Areas I and posterior half of III divided by a longitudinal median groove; I with one tubercle on each side; II with two on each side; III with two parallel and slightly backwards spines with blunt apex, with minute-tuberculate base. Posterior margin of dorsal scutum, free tergites and anal operculum minute-tuberculate.

Venter. Coxa I with one median row of six high tubercles (tubercles higher than those of other podomeres) and three apical tubercles; II with six anterior tubercles, a median row of eight high tubercles and 12 posterior minute tubercles, three apical; III–IV irregularly and densely tuberculate. Genital operculum, stigmatic area, free sternites and anal operculum densely minute-tuberculate.

Chelicera. Segment I smooth; II–III with three and four teeth, respectively.

Pedipalp ( Fig. 3 ). Coxa smooth. Trochanter with one ventral tubercle. Femur short, with six ventral minute tubercles. Patella smooth. Tibial setation: ectal and mesal IiIi. Tarsal setation: ectal and mesal II.

Legs. Coxa I with one anterior tubercle and a posterior one; II with one anterior large tubercle (near ozopore) and a posterior one, not fused with the anterior tubercle of III; coxa III with one anterior tubercle; IV with one retrolateral apical tubercle. Trochanter I with four ventral tubercles; II with five ventral tubercles and four retrolateral ones; III with five ventral tubercles and three retrolateral ones; IV with six ventral tubercles and three retrolateral ones. Femora–tibiae I–IV minute-tuberculate. Tarsal segmentation: 7, 16, 13–14, 17–18. Distitarsus I three-segmented; II four-segmented. Tarsal claw pectinate.

Penis ( Figs. 9, 10 ). Stylus thin, sinuous and long, with several subapical short hairs, apex folded dorsally. Ventral process of glans with a lance-like apex, lateral projections on basal third. Ventral plate with wide V-shaped cleft on apical margin (corners bent ventrally), lateral margins convergent from basal group of setae to subapical one; with three pairs of subapical setae; four pairs of setae on basal lobe (basalmost shortest); three pairs of short setae on lateral-median region (one pair more ventrally placed).

Coloration ( Fig. 4 ). Body, anterior and posterior margin of dorsal scutum, ocularium, lateral of prosoma, region behind ocularium, free tergites, chelicerae, pedipalps, and basal half of legs yellowish orange. Prosoma with a pair of white pearl patches from lateral of ocularium to groove I and a black stripe in the inner side of those patches. Areas I–III almost entirely covered by white pearl patch which is surrounded by a black stripe (except longitudinal median groove of area I); spines of area III blackish. Lateral of coxa IV with oval white pearl patch surrounded by black stripe. Venter with a pentagonal white pearl patch. Apical part of legs from half of femora black.

Female unknown.

Geographical distribution ( Fig. 15 ): Known only from type locality.

Figures

FIGURE 4. Live male specimen of Thereza murutinga sp. nov.

FIGURE 15. Topographic map of southeastern Brazil with records of Caelopyginae, showing the type localities of two new species (colored squares and triangles) and new subfamily records (open circles) on main vegetational physiognomies (Evergreen and Semidecidual Forests and Cerrado savannah). Black circles are records of all species from Pinto-da-Rocha (2002).

FIGURES 1 – 3. Thereza murutinga sp. nov., male holotype (MZSP 36447). 1, habitus, dorsal view; 2, idem, lateral view; 3, right pedipalp, prolateral view. Scale bars, 1 mm.

FIGURES 9 – 14. Penis in dorsal and lateral view: 9, 10, Thereza murutinga sp. nov.; 11, 12, Pristocnemis caipira sp. nov.; 13, 14, Ampheres luteus. Scale bars, 20 µm.