Carapoia utinga, Huber, 2018

Huber, Bernhard A., 2018, The South American spider genera Mesabolivar and Carapoia (Araneae, Pholcidae): new species and a framework for redrawing generic limits, Zootaxa 4395 (1), pp. 1-178 : 141-143

Carapoia utinga sp. n.

Figs 590–592 , 637–643 , 659–660

Diagnosis. Easily distinguished from known congeners by shape of procursus (heavily sclerotized rounded tip; Figs 639–640 ), by armature of male chelicerae (one pair of small frontal apophyses; Fig. 641 ), and by female internal genitalia (oval pore-plates and distinctive lateral sclerites connected to posterior diverging sclerites; Figs 643 , 660 ).

Etymology. The specific name is derived from the type locality; noun in apposition.

Type material. BRAZIL: Pará: ♂ holotype, 1♀ paratype, UFMG (21550–51), and 5♂ 7♀ paratypes, ZFMK (Ar 19255), Belém, Parque Estadual do Utinga, ‘site 2’ (1.433°S, 48.410°W), 25 m a.s.l., 5–6.x.2016 (B.A. Huber, L.S. Carvalho).

Other material examined. BRAZIL: Pará: 7♀ in pure ethanol, ZFMK (Br16-229), same data as types.

Description. Male (holotype)

MEASUREMENTS. Total body length 2.8, carapace width 1.2. Distance PME-PME 80 µm, diameter PME 110 µm, distance PME-ALE 80 µm, distance AME-AME 20 µm, diameter AME 40 µm. Sternum width/length: 0.8/ 0.55. Leg 1: 28.0 (6.4 + 0.4 + 6.7 + 12.8 + 1.7), tibia 2: 4.0, tibia 3: 3.0, tibia 4: 3.8; tibia 1 L/d: 74. Femora 1–4 width (at half length): 0.20, 0.23, 0.26, 0.23.

COLOR (in ethanol). Carapace ochre with brown median band and lateral margins, ocular area only laterally brown; clypeus lower part dark; sternum medially brown, lateral posterior parts light ochre; legs light brown, without dark rings, tips of femora and tibiae lighter; abdomen greenish gray, many internal dark marks dorsally and laterally, ventrally with dark brown genital plate, light brown book-lung covers, dark median band behind genital plate, indistinct light brown plate in front of spinnerets.

BODY. Habitus as in Figs 590–591 ; ocular area raised; carapace with distinct median furrow; clypeus unmodified; sternum unmodified.

CHELICERAE. As in Fig. 641 , with one pair of small frontal apophyses, without modified hairs.

PALPS. As in Figs 637–638 ; coxa large relative to other segments, with retrolateral apophysis; trochanter barely modified; femur with large retrolatero-ventral process proximally, small dorsal hump; procursus very simple, with heavily sclerotized rounded tip ( Figs 639–640 ); genital bulb with slender pointed apophysis and large mostly membranous dorsal protrusion.

LEGS. Without spines, without curved hairs, few vertical hairs; retrolateral trichobothrium on tibia 1 at 3.5%; prolateral trichobothrium present on tibia 1; tarsus 1 with ~25 pseudosegments, distally distinct.

Male (variation). Tibia 1 in five other males: 6.9–7.7 (mean 7.3).

Female. In general similar to male ( Fig. 592 ). Tibia 1 in six females: 4.4–5.5 (mean 4.9). Epigynum as in Figs 642 , 659 ; anterior plate semicircular, dark brown, weakly protruding; with pair of diverging sclerites in membrane behind anterior plate; barely visible posterior plate. Internal genitalia as in Figs 643 , 660 , with oval pore-plates and distinctive lateral sclerites connected to posterior diverging sclerites.

Natural history. The spiders were found in the leaf litter, at the basis of trees, and in small cavities of the ground. When disturbed they did not vibrate but ran away.

Distribution. Known from type locality in Pará state ( Brazil) only ( Fig. 742 ).

Figures

FIGURE 742. Known distribution of the Carapoia cambridgei group.

FIGURES 590–600. Live specimens, Carapoia cambridgei group (part 2). 590–592. C. utinga sp. n., males and female from Belém. 593–595. C. pulchra sp. n., male and females from Pedra Talhada. 596–598. C. suassunai sp. n., male from Mata de Pipa, and females fromGuaribas and Pao Ferro.599–600.C.lutea (Keyserling,1891), male from Iguaçú,female withjuveniles from Turvo.

FIGURES 637–643. Carapoia utinga sp. n. (ZFMK Ar 19255). 637–638. Left male palp, prolateral and retrolateral views. 639–640. Left procursus, dorsal and prolateral views. 641. Male chelicerae, frontal view. 642. Epigynum, ventral view. 643. Cleared female genitalia, dorsal view.Scale lines:0.5 (637–638), 0.2 (639–640), 0.3(641–643).

FIGURES 659–664. Female epigyna, ventral views and cleared female genitalia, dorsal views. 659–660. Carapoia utinga sp. n. (ZFMK Ar 19255). 661–662.C. pulchra sp. n. (ZFMK Ar 19257). 663–664. C. suassunai sp. n. (ZFMK Ar 19262).