Mysmenopsis guayaca, 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: 9-12

publication ID

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

publication LSID

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

DOI

http://doi.org/10.5281/zenodo.3809824

persistent identifier

http://treatment.plazi.org/id/9A2087C1-FFDC-9574-3BAF-FD0D55C2FD5C

treatment provided by

Plazi

scientific name

Mysmenopsis guayaca
status

new species

Mysmenopsis guayaca   new species

Figs 11–20 View FIGURES 11–15 View FIGURES 16–20 , map 1 (black circle).

Material examined. Male holotype and female allotype from Ecuador, Guayas Province: Rio Chilcaplaya (- 02.60989 -79.43625) 287m, 17 Jul. 2016, secondary road, dirt talus, N. Dupérré, E.E. Tapia, A.A. Tapia ( QCAZ GoogleMaps   ). Paratypes 4♂, same data; Cañar Province: La Troncal (-02.46862 -79.26930) 330m, 17 July 2016, 3♀, in Linothele   sp. web, side of road, dirt talus, E. Tapia, N. Dupérré, A. Tapia ( ZMH-A 0001921).

Additional material examined. Ecuador: El Oro Province: Valle Hermoso (-03.51525 -79.83190) 253m, 17 July 2016, 1♂, Linothele   sp. web., E. Tapia, A. Tapia, N. Dupérré ( DTC) GoogleMaps   .

Etymology. The specific name is a noun in apposition derived from the Guayas Province, reffereing to the name given to its inhabitans, “Guayacas”, where the type specimens were collected.

Diagnosis. Males most resemble M. choco   n. sp. but can be distinguished by the triangular retrolateral ledge of the palp with thin cusps ( Fig. 16 View FIGURES 16–20 ); whereas the ledge is excavated with broad cusps in the latter species ( Fig. 36 View FIGURES 36–40 ). Females most resembles M. cube   n. sp. and M. cienaga   , but can be distinguished by the spermathecae closer together not touching the margin of the epigynum ( Fig. 19 View FIGURES 16–20 ), whilst touching in M. cube   n. sp. ( Fig. 9 View FIGURES 6–10 ); from M. cienaga   by the femur I with a triangular tubercle ( Fig. 15 View FIGURES 11–15 ) absent in M. cienaga ( Baert 1990)   .

Description. Male (holotype): Total length: 1.72; carapace length: 0.87; carapace width: 0.84; abdomen length: 0.85. Cephalothorax: carapace brown, pear-shaped; suffused black along pars cephalica and radiating lines ( Fig. 11 View FIGURES 11–15 ). Sternum light brown suffused with black; covered with long setae. Clypeus light brown; low (3x AME). Chelicerae brown suffused with black; 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 with white patches in a circular pattern anteriorly ( Fig. 11 View FIGURES 11–15 ) followed by semi-circular pattern of white patches ( Fig. 12 View FIGURES 11–15 ). Legs: femora I-IV light brown; tibiae and metatarsi I-IV light yellow with dark band apically, tarsi light yellow; femur and tibia I enlarged, metatarsus I slightly curved. Legs spination: patellae I-IV with one macroseta; tibia I with two prolateral clasping spurs and two macrosetae; metatarsus I row of six macrosetae prolatero-ventrally and two clasping spurs apically (small one hidden behind, not visible on image) ( Fig. 14 View FIGURES 11–15 ); tibiae I-IV with one macroseta dorso-proximally; tibia II with three macrosetae ventrally. Total length leg I: 3.16 (1.0/0.26/0.92/0.52/0.46). Genitalia: palpal tibia globular; retrolateral ledge triangular with eight cusps, ventral ledge with two cusps; two retrolateral trichobothria ( Fig. 16 View FIGURES 16–20 ). Cymbium apically rounded, slightly excavated, paracymbium large and rectangular, deeply excavated prolatero-dorsally ( Fig. 17 View FIGURES 16–20 ). Tegulum oval ( Fig. 16 View FIGURES 16–20 ). Embolus short, curved apically, with wide plate-like base, embolic apophysis absent ( Figs 16, 18 View FIGURES 16–20 ).

Female (allotype): Total length: 2.12; carapace length: 0.89; carapace width: 0.80; abdomen length: 1.23. Cephalothorax dark brown ( Fig. 11 View FIGURES 11–15 ), chelicerae and sternum: as in male. Clypeus dark brown; low (2x AME). Eyes: eight, rounded, all approximately of equal size; ocular region on lower protuberance; AME separated by their radius, AME-LE touching; ALE-PLE contiguous, LE-PME separated by their diameter; PME separated by almost their diameter. Abdomen: as in male but darker ( Figs 11, 13 View FIGURES 11–15 ). Legs: coloration as in male but darker, femur I enlarged with triangular, medial tubercle ( Fig. 15 View FIGURES 11–15 ). Legs spination: patellae I-IV with one macroseta; tibiae I-IV with one macroseta dorso-proximally; tibiae I-II with four to five macrosetae ventrally. Total length leg I: 2.99 (0.99/0.31/0. 75/0.54/0.40). Genitalia: epigynum slightly protruding, anterior epigynal margin sinuous, posterior epigynal margin rounded ( Fig. 19 View FIGURES 16–20 ). Dorsal epigynal plate with deeply curved anterior margin ( Fig. 20 View FIGURES 16–20 ). Internal genitalia (paratype): spermathecae large and rounded; copulatory ducts thick, directed inward; fertilization ducts horizontal, well sclerotized basally, semi-transparent and curved apically ( Fig. 20 View FIGURES 16–20 ).

Distribution. Ecuador, Cañar, Guayas and El Oro Provinces.

Natural history. Specimens were collected in Linothele   sp. webs, the species inhabit the littoral region and was found between 287– 330m. Specimens were found in a deciduous lowland forest of the southern Ecuadorian Chocó (BdTc01) ( Santiago, Morales, Aguirre, Chinchero & Iglesias, 2013).

QCAZ

Museo de Zoologia, Pontificia Universidad Catolica del Ecuador