Mesabolivar mimoso

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: 55-56

publication ID

https://doi.org/10.11646/zootaxa.4395.1.1

publication LSID

lsid:zoobank.org:pub:B43C234D-45C4-4A6D-9836-8A7524A5B291

persistent identifier

http://treatment.plazi.org/id/160AC713-C642-FFB2-2A9C-990E364D7DC1

treatment provided by

Plazi

scientific name

Mesabolivar mimoso
status

sp. n.

Mesabolivar mimoso  sp. n.

Figs 209–214View FIGURES206–214, 243–244View FIGURES241–252

Diagnosis. Distinguished from similar relatives ( M. cyaneomaculatus  , M. madalena  , M. claricae  , M. inmanis  ) by combination of: armature of male chelicerae ( Figs 209–210View FIGURES206–214; presence of distinct proximal apophyses, in contrast to M. cyaneomaculatus  and M. claricae  ); procursus tip with short prolateral apophysis ( Fig. 211View FIGURES206–214; in contrast to M. madalena  and M. inmanis  ); by indistinct epigynal pocket bordered by pair of low humps ( Figs 213View FIGURES206–214, 243View FIGURES241–252).

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

Type material. BRAZIL: Espírito Santo: ♂ holotype, MNRJAbout MNRJ (14312), 1♂ 1♀ paratypes, ZFMKAbout ZFMK (Ar 19069), Mimoso do Sul, Finca Tacutinga, forest fragment (21°01.4’S, 41°23.4’W), 240 m a.s.l., 4.x.2010 (B.A. Huber, A. Pérez-González).

Other material examined. BRAZIL: Rio de Janeiro: 1♂ 1♀, ZFMKAbout ZFMK (Ar 19070), Paraty , degraded forest near Morro do Forte (23°11.7’S, 44°42.8’W), ~ 10–30 m a.s.l., 23.viii.2007 (B.A. Huber)GoogleMaps  ; 2♀ in pure ethanol, ZFMKAbout ZFMK (Br 07/100-34), same dataGoogleMaps  . 1♀ in pure ethanol, ZFMKAbout ZFMK ( RJ15View Materials), Parque Nacional da Restinga de Jurubatiba [~ 22.18°S, 41.48°W], iii.2011 (A. Pérez-González, G. Cardoso).GoogleMaps 

Description. Male (holotype)

MEASUREMENTS. Total body length 3.5, carapace width 1.4. Distance PME-PME 120 µm, diameter PME 150 µm, distance PME-ALE 120 µm, distance AME-AME 25 µm, diameter AME 60 µm. Sternum width/length: 0.95/ 0.65. Leg 1: 50.4 (12.7 + 0.5 + 12.3 + 22.1 + 2.8), tibia 2: 8.8, tibia 3: 5.1, tibia 4: 8.0; tibia 1 L/d: 95. Femora 1–4 width (at half length): 0.16, 0.19, 0.22, 0.17.

COLOR (in ethanol). Carapace ochre-orange with large brown median mark including posterior part of ocular area; sternum ochre-orange; legs light brown, tips of femora and tibiae lighter (whitish), without dark rings; abdomen greenish gray, dorsally and laterally densely covered with dark marks, ventrally with light orange-brown plate in front of gonopore, very indistinct plate in front of spinnerets.

BODY. Habitus very similar to M. cyaneomaculatus  (cf. Figs 148–149View FIGURES 138–149); ocular area raised; carapace with distinct median furrow; clypeus unmodified; sternum unmodified.

CHELICERAE. With two pairs of frontal apophyses, one pair proximal, rounded, one pair distal near median line, pointed ( Figs 209–210View FIGURES206–214).

PALPS. In general very similar to M. cyaneomaculatus  (cf. Huber 2000: figs 813, 816), proximal segments apparently identical in shape and size; procursus prolateral apophysis shorter ( Figs 211–212View FIGURES206–214); bulbal process very similar to M. cyaneomaculatus  .

LEGS. Without spines, without curved hairs, few vertical hairs; retrolateral trichobothrium on tibia 1 at 2.5%; prolateral trichobothrium present on tibia 1; tarsus 1 with>40 pseudosegments, distally fairly distinct.

Male (variation). Tibia 1 in other male: 12.3 (missing in third male).

Female. In general similar to male but all leg femora approximately same width. Tibia 1 in one female: 9.2 (missing in other females). Epigynum as in Figs 213View FIGURES206–214, 243View FIGURES241–252; anterior plate semicircular, with indistinct median pocket (rather a depression without clear margins), and pair of low lateral humps; simple large posterior plate. Internal genitalia as in Figs 214View FIGURES206–214, 244View FIGURES241–252, with pair of large pore-plates in tent-shaped lateral position, converging anteriorly.

Distribution. Known from three localities in Espírito Santo and Rio de Janeiro states ( Brazil) ( Fig. 727View FIGURES726–729).

MNRJ

Museu Nacional/Universidade Federal de Rio de Janeiro

ZFMK

Zoologisches Forschungsmuseum Alexander Koenig