Mesabolivar turvo Huber 2018
- Dataset
- The South American spider genera Mesabolivar and Carapoia (Araneae, Pholcidae): new species and a framework for redrawing generic limits
- Rank
- SPECIES
- Published in
- 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): 1-178, DOI: 10.11646/zootaxa.4395.1.1
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Arachnida
- order
- Araneae
- family
- Pholcidae
- genus
- Mesabolivar
- species
- Mesabolivar turvo
description
Description. Male (holotype) MEASUREMENTS. Total body length 2.4, carapace width 1.0. Distance PME-PME 110 µm, diameter PME 90 µm, distance PME-ALE 70 µm, distance AME-AME 20 µm, diameter AME 30 µm. Sternum width / length: 0.75 / 0.50. Leg 1: 23.6 (6.0 + 0.4 + 6.1 + 9.5 + 1.6), tibia 2: 3.6, tibia 3: 2.4, tibia 4: 4.1; tibia 1 L / d: 76. Femora 1 – 4 width (at half length): 0.11, 0.21, 0.17, 0.12. COLOR (in ethanol). Prosoma and legs ochre-yellow, carapace with dark median line, legs without light or dark rings; abdomen greenish-gray, dorsally and laterally densely covered with dark marks, ventrally pale with light brown mark in front of gonopore, without mark in front of spinnerets. BODY. Habitus as in Figs 466 – 467; ocular area raised; carapace with shallow but distinct median furrow; clypeus unmodified; sternum unmodified. CHELICERAE. With pair of strong frontal apophyses, tips of apophyses apparently with one modified hair each (Figs 541 – 542). PALPS. As in Figs 538 – 539; coxa with large retrolateral apophysis; trochanter barely modified; femur with retrolateral process proximally, distally widening; tibia very short; tarsus with two retrolatero-dorsal processes; procursus very simple, without processes, slender with pointed tip, in dorsal view slightly S-shaped (Fig. 540); genital bulb with large process mostly whitish. LEGS. Without spines and curved hairs, few vertical hairs; retrolateral trichobothrium on tibia 1 at 4 %; prolateral trichobothrium present on tibia 1; tarsus 1 with> 20 pseudosegments, distally fairly distinct. Male (variation). Tibia 1 in three other males: 5.8, 5.8 (Turvo National Park), 4.8 (Iratí Forest Reserve). Female. In general similar to male (Figs 468 – 469) but femora 2 and 3 not thicker than others. Tibia 1 in six females from Turvo National Park: 3.8 – 4.4 (mean 4.0); in three females from Iratí Forest Reserve: 3.4, 3.7, 3.7. Epigynum as in Fig. 543; simple oval anterior plate, slightly protruding, internal sclerite visible through cuticle; posterior plate very large, simple, with dark internal mark medially. Internal genitalia as in Fig. 544, with distinctive sclerite connecting pore-plates. Natural history. The spiders were found in small cavities in the ground, often in the more humid places under dead branches. When disturbed, they ran a short distance and then stopped moving or vibrated very slightly.
diagnosis
Diagnosis. Distinguished from known congeners by shape of procursus (Figs 539 – 540; slender with pointed tip), by armature of male chelicerae (Figs 541 – 542; pair of frontal apophyses not close to median line), and shape of epigynum and internal female genitalia (Figs 543 – 544; oval anterior plate without pocket and processes; very large posterior plate; distinctive internal structure connecting pore-plates).
distribution
Distribution. Known from two localities in Rio Grande do Sul and Paraná states (Brazil) (Fig. 738).
etymology
Etymology. The specific name is derived from the type locality; noun in apposition.
materials_examined
Type material. BRAZIL: Rio Grande do Sul: ♂ holotype, 1 ♀ paratype, UFMG (21538 – 39), 2 ♂ 4 ♀ paratypes, ZFMK (Ar 19222), Turvo National Park, Lagoas Trail near headquarters (27.231 ° S, 53.849 ° W), 400 m a. s. l., 29. x. 2014 (B. A. Huber, L. S. Carvalho). Other material examined. BRAZIL: Rio Grande do Sul: 3 ♀ in pure ethanol, ZFMK (Br 14 - 199), same data as types. 1 ♀, ZFMK (Ar 19223), Turvo National Park, near Salto do Yucumã (27.136 ° S, 53.882 ° W), 175 m a. s. l., 28. x. 2014 (B. A. Huber, L. S. Carvalho). Paraná: 1 ♂ 1 ♀, ZFMK (Ar 19224), Iratí Forest Reserve (25.362 ° S, 50.584 ° W), 850 m a. s. l., 13. x. 2014 (B. A. Huber, L. S. Carvalho); 2 ♀ in pure ethanol, ZFMK (Br 14 - 145).
Name
- Homonyms
- Mesabolivar turvo Huber 2018