Mysmenopsis guanza, 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 : 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.3809848

persistent identifier

https://treatment.plazi.org/id/9A2087C1-FFF9-9552-3BAF-FEB556EEF82D

treatment provided by

Plazi

scientific name

Mysmenopsis guanza
status

new species

Mysmenopsis guanza new species

Figs 129–138 View FIGURES 129–133 View FIGURES 134–138 , map 2 (green 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♂ 3♀ same data ( QCAZ, ZMH- A0001562 , ZMH-A0001883 ) .

Additional material examined. Ecuador: Zamora-Chinchipe Province: Tepuy Guanza (-04.14633 -78.67509) 1527m, 5♀, 1 juv., 5 March 2016, E. Tapia ( DTC, ZMH-A0001561 , ZMH-A0001884 ) GoogleMaps .

Etymology. The specific name is a noun in apposition taken from the type locality, Tepuy Guanza.

Diagnosis. Males are differentiated from all species by their long embolus, wide basally, tapering apically and curving prolaterally ( Figs 134–136 View FIGURES 134–138 ). Females can be differentiated from most species by the absence of a tubercle on femur I ( Fig. 133 View FIGURES 129–133 ), and the presence of two macrosetae ( Fig. 133 View FIGURES 129–133 , arrows); from M. archeri by their large oval spermathecae ( Fig. 138 View FIGURES 134–138 ), spermathecae smaller and triangular in the latter species ( Platnick & Shadab 1978, fig. 53).

Description. Male (holotype): Total length: 1.5; carapace length: 0.73; carapace width: 0.68; abdomen length: 0.77. Cephalothorax: carapace dark brown, pear-shaped; suffused black along pars cephalica and radiating lines ( Fig. 129 View FIGURES 129–133 ). Sternum dark brown; covered with long setae. Clypeus dark brown; high (5x AME). Chelicerae dark brown; promargin with three teeth; retromargin not observed. Eyes: eight, rounded, all approximately equal size; ocular region on protuberance; AME separated by their radius, AME-LE touching; ALE-PLE contiguous, LE-PME separated by their diameter; PME separated by their diameter. Abdomen: rounded, dark brownish-grey with six white spots anteriorly in circular pattern ( Fig. 129 View FIGURES 129–133 ), followed by C-shaped white patches and six white, smaller spots dorsally ( Fig. 130 View FIGURES 129–133 ). Legs: femora I-II dark brown; femora III-IV orange-brown with darker bands medially and apically; tibiae and metatarsi I-IV light orange-brown with dark band apically, tarsi light orange; femur and tibia I slightly enlarged, metatarsus I not curved. Legs spination: patellae I-IV with one macroseta; tibia I with one prolateral clasping spur; metatarsus I without macrosetae prolatero-ventrally and with one clasping spur apically ( Fig. 132 View FIGURES 129–133 ); femur I with one macroseta prolaterally; tibia I with five macrosetae retrolaterally, tibia I-IV with one macroseta dorso-proximally; tibia II with three macrosetae ventrally. Total length leg I: 2.66 (0.84/0.29/0.69/0.45 /0.39). Genitalia: palpal tibia globular; retrolateral and ventral ledge without projection or cusps; two retrolateral trichobothria ( Fig. 134 View FIGURES 134–138 ). Cymbium short, apically truncated; paracymbium hook-shaped ( Fig. 135 View FIGURES 134–138 ). Tegulum excavated ( Fig. 134 View FIGURES 134–138 ). Embolus relatively long, twisted, strongly curved, embolic apophysis large and curved not visible in retrolateral view ( Figs 134, 136 View FIGURES 134–138 ).

Female (allotype): Total length: 1.67; carapace length: 0.82; carapace width: 0.69; abdomen length: 0.85. Cephalothorax ( Fig. 129 View FIGURES 129–133 ), chelicerae and sternum: as in male Clypeus dark brown; low (3x 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 ( Figs 129, 131 View FIGURES 129–133 ). Legs: coloration as in male; femur I enlarged without tubercle ( Fig. 133 View FIGURES 129–133 ). Legs spination: femur I with two macrosetae prolaterally ( Fig. 133 View FIGURES 129–133 , arrows); patellae I-IV with one macroseta; tibiae I-IV with one macroseta dorso-proximally; tibiae I-II with three macrosetae ventrally. Total length leg I: 2.51 (0.78/0.27/0.6 /0.46/0.4). Genitalia: epigynum rather flat, anterior epigynal margin not well delimited, posterior epigynal margin pointed ( Fig. 137 View FIGURES 134–138 ). Dorsal epigynal plate with curved, well sclerotized anterior margin ( Fig. 138 View FIGURES 134–138 ). Internal genitalia (paratype): spermathecae large and oval; copulatory ducts long, C-shaped; fertilization ducts wide, looping, semitransparent ( Fig. 138 View FIGURES 134–138 ).

Distribution. Only known from the type locality in Zamora-Chinchipe Province.

Natural history. Specimens were collected in Linothele sp. web at 1527m in a low evergreen mountain forest of the Cordillera del Condor-Kutuku (BsBa03) ( Morales, Chinchero & Medina-Torres, 2013). A female Faiditus sp. was also collected with the type material. M. guanza n. sp. lives in sympatry with M. baerti 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