Holcobunus ibitirama, Tourinho, Ana Lúcia, Pinto-Da-Rocha, Ricardo & Bragagnolo, Cibele, 2015

Tourinho, Ana Lúcia, Pinto-Da-Rocha, Ricardo & Bragagnolo, Cibele, 2015, Taxonomic notes on Holcobunus Roewer, 1910, with descriptions of three new species, and new records for Holcobunus nigripalpis Roewer, 1910 (Opiliones: Eupnoi: Sclerosomatidae), Zootaxa 4027 (3), pp. 425-436 : 429

Holcobunus ibitirama sp. nov.

Fig. 3 , 4 , 7

Etymology. After type locality, Ibitirama , a word of the indigenous Tupi people of Brazil that means "region with many mountains."

Type locality. Brazil, Espírito Santo, Ibitirama , Santa Marta.

Type Material: Brazil, Espírito Santo, Ibitirama , Santa Marta, (20o29’52”S – 41o43’47”W) M.B.da Silva & G.E. Kaneto leg., III.2006, MZSP 57264, male holotype and two male paratypes; 3 immatures.

Distribution. only known from type locality ( Fig. 7 ).

Diagnosis. Body color orange, legs trochanter and eye mound black ( Fig. 3 A–C). Femur, patella and proximal half of pedipalpal tibia brownish, distal half of tibia and tarsus cream ( Fig. 3 A,C), chelicerae cream. Eye mound armed with sharp granules ( Fig. 3 C). Femoral nodule formula: 2/4/2-3/3-4.

Description. Male paratype: lengths: body: 2.55 mm, carapace: 0.71 mm, chelicera: 0.80 mm, pedipalps: 2.75 mm. Femora: 9.6/15.4/8.5/ 11.9 mm. Dorsal and ventral body surface reticulate. Supracheliceral lamina armed distally with one triangular and crenulated tubercle on each lobe. Eye mound armed with two rows of 10 or more sharp granules. Lateral margins of genital operculum armed with three-pointed, sharp granules, arculi genitales II unarmed. Chelicerae: ventrobasal spine of basichelicerite blunt. Pedipalps: femur armed with ventral row of sharp pointed tubercles. Patella, including inner apophysis, armed with dorsolateral sharp-pointed tubercles, inner apical apophysis as long as wide. Tibia armed with sharp tubercles. Tarsus unarmed. Legs: femoral nodule formula: 2/4/2- 3/3-4. Penis ( Fig. 4 ): Winglets not projected laterally, longer than wide, shorter than in other species of Holcobunus ( Fig. 4 A, B). Dorsal surface of glans not depressed ( Fig. 4 C, D). Stylus bent in ventral view, with two pairs of lateroapical setae ( Fig. 4 D).

Figures

FIGURE 3. Holcobunus ibitirama sp. nov. Male holotype: A, dorsal view; B, ventral view; C, lateral view. Scale bars = 0.5 mm.

FIGURE 4. Holcobunus ibitirama sp. nov. Male genitalia: A, dorsal view (scale bar = 100 µm); B, ventral view (scale bar = 20 µm); C, lateral view (scale bar = 100 µm); D, detail of glans, ventral view (scale bar = 10 µm); E, detail of glans, dorsal view (scale bar = 20 µm).

FIGURE 7. Distribution records of Holcobunus species.