Mysmenopsis baerti, Dupérré & Tapia, 2020

Dupérré, Nadine & Tapia, Elicio, 2020, Megadiverse Ecuador: a review of Mysmenopsis (Araneae, Mysmenidae) of Ecuador, with the description of twenty-one new kleptoparasitic spider species, Zootaxa 4761 (1), pp. 1-81 : 43-46

publication ID

https://doi.org/10.11646/zootaxa.4761.1.1

publication LSID

lsid:zoobank.org:pub:DDBF3F67-D2E0-4176-B19C-D7319E0500D6

DOI

https://doi.org/10.5281/zenodo.3809852

persistent identifier

https://treatment.plazi.org/id/9A2087C1-FFFE-9552-3BAF-FD5F5564FEE8

treatment provided by

Plazi

scientific name

Mysmenopsis baerti
status

new species

Mysmenopsis baerti new species

Figs 119–128 View FIGURES 119–123 View FIGURES 124–128 , map 2 (red rectangle).

Material examined. Male holotype and female allotype from Ecuador, Zamora-Chinchipe Province, Tepuy Guanza (-04.14633 -78.67509) 1527m, 5 March 2016, E. Tapia ( QCAZ). GoogleMaps Paratypes: 1♂, same data ( QCAZ).

Etymology. The specific name is in honor of Dr. Léon Baert in recognition of his work on Peruvian Mysmenopsis .

Diagnosis. Males are distinguished from all species by the sharply pointed, bifid embolic apophysis and one large cusp on the small, curved retrolateral ledge of the palpal tibia ( Figs 124, 126 View FIGURES 124–128 ). Females most resembles M. onorei but can be distinguished by the rounded apical margin of the epigynal plate ( Fig. 127 View FIGURES 124–128 ) and large, curved fertilization ducts whereas the apical margin is pointed in M. onorei ( Dupérré & Tapia 2015, fig. 6).

Description. Male (holotype): Total length: 1.26; carapace length: 0.66; carapace width: 0.62; abdomen length: 0.60. Cephalothorax: carapace dark brown, pear-shaped; suffused black along pars cephalica and radiating lines ( Fig. 119 View FIGURES 119–123 ). Sternum dark brown; covered with long setae. Clypeus dark brown; high (5x AME). Chelicerae light brown; promargin with three teeth; retromargin not observed. Eyes: eight, rounded, all approximately equal size; ocular region on protuberance; AME separated by their diameter, AME-LE touching; ALE-PLE contiguous, LE- PME separated by their diameter; PME separated by their diameter. Abdomen: rounded, dark grey with four white spots dorsally, followed by pattern of white-patched bands interlace with dark bands ( Figs 119, 120 View FIGURES 119–123 ). Legs: femur I orange-brown; femora II-IV light orange-brown; tibiae and metatarsi I-IV light orange-brown with dark band apically, tarsi light orange; femur and tibia I enlarged, metatarsus I slightly curved. Legs spination: patellae I-IV with one macroseta; tibia I with one prolateral clasping spur; metatarsus I without macrosetae and with one clasping spur apically ( Fig. 122 View FIGURES 119–123 ); tibiae I-IV with one macroseta dorso-proximally; tibia II with two macrosetae ventrally. Total length leg I: 2.47 (0.78/0.22/0.65/0.4/0.42). Genitalia: palpal tibia globular; retrolateral ledge small and curved with one large cusp, ventral ledge rectangular without cusps; two retrolateral trichobothria ( Fig. 124 View FIGURES 124–128 ). Cymbium apically pointed, not strongly excavated; paracymbium large, shark fin-like, deeply excavated prolatero-dorsally ( Fig. 125 View FIGURES 124–128 ). Tegulum oval, with rectangular tip ( Fig. 124 View FIGURES 124–128 ). Embolus spine-like, with two basally pointed apophyses ( Figs 124, 126 View FIGURES 124–128 ).

Female (allotype): Total length: 2.01; carapace length: 0.91; carapace width: 0.82; abdomen length: 1.1. Cephalothorax ( Fig. 119 View FIGURES 119–123 ), chelicerae and sternum: as in male Clypeus dark brown; high (4x AME). Eyes: eight, rounded, all approximately of equal size; ocular region on lower protuberance; AME separated by their diameter, AME-LE touching; ALE-PLE contiguous, LE-PME separated by their diameter; PME separated by their diameter. Abdomen: as in male ( Fig. 121 View FIGURES 119–123 ). Legs: femur I dark brown, femora II-IV light brown with basal, medial and apical black bands, tibiae II-IV light brown with medial and apical black bands, metatarsi II-IV light brown with apical black bands, tarsi light brown; femur I enlarged with medial, triangular tubercle ( Fig. 123 View FIGURES 119–123 ). Legs spination: patellae I-IV with one macroseta; tibiae I-IV with one macroseta dorso-proximally; tibiae I-II with four macrosetae ventrally. Total length leg I: 3.27 (1.06/0.36/0.83/0.56/0.46). Genitalia: epigynum protruding, anterior epigynal margin not well delimited, posterior epigynal margin rounded ( Fig. 127 View FIGURES 124–128 ). Dorsal epigynal plate with wing-like anterior margin ( Fig. 128 View FIGURES 124–128 ). Internal genitalia with large and rounded spermathecae; copulatory ducts well sclerotized, directed inwards; fertilization ducts wide, curved, well sclerotized basally, semi-transparent apically and curving ( Fig. 128 View FIGURES 124–128 ).

Distribution. Only found at the type locality in Zamora-Chinchipe Province. Natural history. Specimens were collected in a Linothele sp. web in a low evergreen mountain forest of the Cordillera del Condor-Kutuku (BsBa03) ( Morales, Chinchero & Medina-Torres, 2013) at 1527m. M. baerti n. sp. lives in sympatry with M. guanza n. sp. and M. tepuy n. sp.

QCAZ

Museo de Zoologia, Pontificia Universidad Catolica del Ecuador

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Mysmenidae

Genus

Mysmenopsis