Ochyrocera ungoliant, Brescovit, Antonio D., Cizauskas, Igor & Mota, Leandro P., 2018

Brescovit, Antonio D., Cizauskas, Igor & Mota, Leandro P., 2018, Seven new species of the spider genus Ochyrocera from caves in Floresta Nacional de Carajas, PA, Brazil (Araneae, Ochyroceratidae), ZooKeys 726, pp. 87-130 : 119-121

Ochyrocera ungoliant sp. n. Figures 18, 20A

Types.

Holotype male from Cave N4E_0062 (6°2'1"S, 50°9'12"W), Serra Norte, Floresta Nacional de Carajás, Parauapebas, Pará, Brazil, 24-30/VII/2009, R. Andrade & I. Cizauskas et al. (IBSP 174063). Paratype: female from Cave N4E_0046 (6°2'16"S, 50°9'36"W), Serra Norte, Floresta Nacional de Carajás, Parauapebas, Pará, Brazil, 18/VIII-03/IX/2009, R. Andrade & I. Cizauskas et al. (IBSP 174062).

Other material examined.

BRAZIL. Pará: HYPOGEAN SAMPLES: Parauapebas, Floresta Nacional de Carajás, Serra Norte, Cave N4E_0046 (6°2'16"S; 50°9'36"W), 1♀, 18/VIII-03/IX/2009 (IBSP 188868); Canaã dos Carajás, Floresta Nacional de Carajás, Serra Sul, Cave S11D-0064 (6°23'31"S, 50°18'48"W), 1♂, 13-30/I/2010, R. Andrade & I. Cizauskas et al. (IBSP 175488); Níquel Vermelho, Cave NV 07 (6°28'41"S, 49°54'20"W), 1♂, 22-28/II/2005, R. Andrade & I. Armoni (IBSP 55367).

Etymology.

The specific name in apposition refers to Ungoliant, an evil spider spirit created by J. R. R. Tolkien in the book "The Silmarillion".

Diagnosis.

Males and females of Ochyrocera ungoliant resemble those of O. charlotte and O. viridissima Brignoli in having a subapical cuspule in the distal area of the cymbium (Fig. 18G−H; Brignoli 1974: fig. 6), but can be distinguished from these species by their intense dark green color pattern and carapace with two longitudinal yellowish-green dorsal bands (Fig. 18 A–B). Males can be diagnosed by their short cymbial apophysis with a very narrow tip and embolus with lamellar area in the distal third (Fig. 18 E–H); and females by their genitalia with very short medial columnar uterus externus and spermathecae with broad and furrow apex (Fig. 18 C–D).

Description.

Male (holotype). Total length 2.3. Carapace length 0.7, ovoid; narrowing gradually anteriorly; pars cephalica flat; fovea not visible (Fig. 18A). Clypeus length 0.7, curved forward. Eyes: PME elongated oval; ALE and PLE rounded. Chelicerae green; promargin with eight teeth, attached to long lamina; retromargin without teeth. Sternum light green. Endites dark green suffused. Legs: light green; formula 1423; total length: I 7.0; II 5.9; III 4.1; IV 6.5. Male palp: palpal femur length 0.4; palpal tibia not enlarged basally; cymbial apophysis same length as tibiae, with subdistal cuspule at tip, retrolateral long hair on projected base, next to the short tarsal organ; with three basal setae, and cymbial prolateral extension squared; bulb oval; embolus elongated, wide at base and curved forward, with sinuous tip (Fig. 18 E–H). Abdomen length 1.3, oval; uniformly purplish green color (Fig. 18A). Six epiandrous spigots, with short base.

Female (paratype IBSP 174062). Total length 2.0. Carapace length 0.74. Carapace as in male (Fig. 18B). Pedipalp without claw with conical tip and subdistal trichobothria. Clypeus 0.68 diameter. Eyes, chelicerae, sternum, endites, and labium as in male. Legs as in male, formula 4123, total length I 6.3; II 4.7; III 3.6 IV 4.3. Abdomen length 0.96, with pattern as in male (Fig. 18B). Colulus triangular, with 8-10 bristles. Internal genitalia with weakly sclerotized; short columnar uterus externus, with inconspicuous chambers. Uterus externus ending in a rounded neck in the columnar uterus externus. Small oval pore-plates far from the spermathecae base, with approximately 10-12 glandular ducts (Fig. 18 C–D).

Distribution.

Recorded exclusively from three caves in the Carajás region, state of Pará, northern Brazil (Fig. 20A).