The South American spider genera Mesabolivar and Carapoia (Araneae, Pholcidae): new species and a framework for redrawing generic limits
Huber, Bernhard A.
Zootaxa
2018
2018-03-19
4395
1
1
178
R2X5
Huber, 2018
Huber
2018
[151,335,1015,1041]
Arachnida
Pholcidae
Carapoia
GBIF
Animalia
Araneae
154
155
Arthropoda
species
agilis
sp. nov.
Diagnosis.Distinguished from similar known congeners ( C. djavani, C. exigua) by details of male pedipalp ( Figs 689–691; long tibia; procursus with subdistal prolateral branch), by armature of male chelicerae ( Fig. 692; distinctive arrangement and sizes of two pairs of small frontal apophyses), by simple epigynum without pocket, with whitish median area at posterior margin of anterior plate ( Figs 694, 715), and by internal female genitalia ( Figs 695, 716; very large elongated pore-plates, parallel to each other).
Etymology.The specific name refers to the rapid running of this species (Latin agilis= quick, swift); adjective.
Typematerial. BRAZIL: Pernambuco: ♂ holotype, 1♀ paratype, UFMG(21560–61), and 3♂ 10♀ paratypes, ZFMK(Ar 19295), near Bonito, forest near Cachoeira da Gruta ( 8.547°S, 35.712°W), 380 ma.s.l., 24–25.v.2015(B.A. Huber, L.S. Carvalho). Other material examined. BRAZIL: Pernambuco: 2♀3 juvs in pure ethanol, ZFMK( Br15-222), same data as type material. 1♂ 1♀, ZFMK( Ar19296), near Bonito, Alto da Serra( 8°30.7’S, 35°34.3’W), 750–800 ma.s.l., 24–25.v.2015( B.A. Huber, L.S. Carvalho). 5♂ 9♀2 juvs, ZFMK( Ar19297), Reserva Biológica de Saltinho( 8°43.6’S, 35°10.7’W), 50 ma.s.l., 26.v.2015( B.A. Huber, L.S. Carvalho); 1 juv.in pure ethanol, ZFMK( Br15- 230), same data.
Description. Male( holotype) MEASUREMENTS. Total body length 2.0, carapace width 0.95. Distance PME-PME 80 µm, diameter PME 60 µm, distance PME-ALE 50 µm, distance AME-AME 25 µm, diameter AME 25 µm. Sternum width/length: 0.60/ 0.50. Leg 1: 12.4 (2.8 + 0.3 + 3.0 + 5.2 + 1.1), tibia 2: 1.9, tibia 3: 1.4, tibia 4: 1.7; tibia 1 L/d: 40. Femora 1–4 width (at half length): 0.19, 0.20, 0.20, 0.20. COLOR (in ethanol). Prosoma and legs ochre, legs without dark rings, tips of tibiae whitish; abdomen pale gray, with large yellowish mark in hear area, light brown plate in front of gonopore, yellowish plate in front of spinnerets. BODY. Habitus as in Figs 670–671; ocular area barely raised; carapace with deep median furrow; clypeus unmodified; sternum unmodified. FIGURES 689–695. Carapoia agilis sp. n.(ZFMK Ar 19295). 689–690. Left male palp, prolateral and retrolateral views. 691. Left procursus, dorsal view. 692. Male chelicerae, frontal view. 693. Cheliceral apophysis with modified hair. 694. Epigynum, ventral view. 695. Cleared female genitalia, dorsal view. Scale lines: 0.3 (689–692, 694–695), 0.05 (693). CHELICERAE. As in Fig. 692; with two pairs of small frontal apophyses; proximal pair with one uniquely curved modified hair on each apophysis. PALPS. As in Figs 689–690; coxa with large retrolateral apophysis; trochanter with small ventral process; femur with retrolatero-ventral process proximally; tibia very long; tarsus with prolatero-dorsal process; procursus weakly curved, with subdistal prolateral branch ( Fig. 691); genital bulb large, with straight pointed apophysis and large, mostly membranous dorsal protrusion. LEGS. Densely covered with regular short hairs, without spines and curved hairs, few vertical hairs; retrolateral trichobothrium on tibia 1 at 12%; prolateral trichobothrium present on tibia 1; tarsus 1 with ~25 pseudosegments, distally fairly distinct. Male(variation). Tibia 1 innine other males: 2.5–3.1 (mean 2.9); abdomen in some specimens with dark bluish internal marks dorsally and laterally. Female.In general similar to male ( Fig. 672) but abdomen without yellowish mark in heart area. Tibia 1 in 19 femalesfrom near Cachoeira da Gruta and Reserva Biológica de Saltinho: 2.2–2.5 (mean 2.3); in female from Alto da Serra: 2.8. Epigynum as in Figs 694, 715; anterior epigynal plate simple, semicircular, without pocket and processes, weakly protruding, with distinctive whitish area at posterior margin; posterior plate narrow. Internal genitalia as in Figs 695, 716, with pair of large elongated pore-plates lying parallel to each other. Natural history.This species was abundant in dead bamboo sheaths on the ground at the forest edge and in regular leaf litter in the forest. During about 1 hour of searching of 1m2 at Cachoeira da Gruta, about eight adult specimens were found, together with several specimens of the syntopic C. bispina. In contrast to C. bispina, this species lived higher in the leaf litter and ran rapidly when disturbed. Some females had large genital plugs.
Distribution.Known from three localities in Pernambucostate ( Brazil) ( Fig. 743).
1835976037
ZFMK
Br
Brazil
154
155
2
2
Pernambuco
1835975898
2015-05-24
2015-05-25
2015-05-24
ZFMK
B. A. Huber & L. S. Carvalho
Brazil
Ar
775
-8.511666
Alto da Serra
129
-35.571667
Bonito
154
155
2
1
1
Pernambuco
1835976023
2015-05-26
ZFMK
B. A. Huber & L. S. Carvalho
Brazil
50
-8.726666
Reserva Biologica de Saltinho
129
-35.178333
Ar
154
155
14
9
5
Pernambuco
1835975931
2015-05-26
ZFMK
Br
Brazil
50
-8.726666
Reserva Biologica de Saltinho
129
-35.178333
Ar
154
155
1
Pernambuco