Mysmenopsis lloa, 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 : 30

Mysmenopsis lloa new species

Figs 81–85 , map 1 (white star).

Material examined. Female holotype from Ecuador, Pichincha Province, Lloa via Mindo, sector Palmira, km 16.4 (-00.22151 -78.64677) 2719m, 31 Jan, 2016, N. Dupérré, E.E. Tapia, A.A. Tapia ( QCAZ).

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

Diagnosis. This species most resembles M. angamarca n. sp. and M. cienaga but can be distinguished by the epigynum with dark sclerotized band sub-apically ( Fig. 84 ), apical in M. angamarca n. sp. ( Fig. 89 ); from M. cienaga by the femur I with a pointed tubercle ( Fig. 83 ), absent in the latter ( Baert 1990).

Description. Female (holotype): Total length: 2.87; carapace length: 1.0; carapace width: 0.87; abdomen length: 1.87. Cephalothorax: carapace dark brown, pear-shaped; suffused black along pars cephalica and radiating lines ( Fig. 81 ). Sternum dark brown; covered with long setae. Clypeus dark; high (4x AME). Chelicerae dark brown suffused black; promargin with three teeth; retromargin not observed. Eyes: eight, rounded, all approximately of 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: oval, light grey with white patches in hourglass pattern ( Figs 81, 82 ). Legs: femur I dark brown, femora II-IV light yellow with basal, medial and apical dark band; tibiae and metatarsi II-IV light yellow with apical dark band, tarsi light yellow; femur I enlarged with small, medial tubercle ( Fig. 83 ). Legs spination: patellae I-IV with one macroseta; tibiae I-IV with one macroseta dorso-proximally; tibiae I-II with three to four macrosetae ventrally. Total length leg I: 3.52 (1.15/0.4/0.89/0.6/0.48). Genitalia: epigynum protruding, anterior epigynal margin not well delimited, posterior epigynal margin rounded with sub-apical dark, sclerotized rim ( Fig. 84 ). Dorsal epigynal plate with wing-like anterior margin ( Fig. 85 ). Internal genitalia with large and rounded spermathecae; copulatory ducts not observed; fertilization well sclerotized basally, curved, semi-transparent and curving apically ( Fig. 85 ).

Male: Unknown.

Distribution. Only known from the type locality in Pichincha Province.

Natural history. The holotype specimen was collected in a Linothele sp. web at 2719m in the Andean ecoregion. M. lloa n. sp. inhabit the evergreen mountain forest of the western Andes (BsMn03) ( Aguirre, Toasa & Gálvez 2013).

Figures

FIGURES 81–85. Mysmenopsis lloa n. sp., 81, Female habitus, dorsal view. 82, Female abdomen, posterior view. 83, Leg I, prolater view. 84, Epigynum, ventral view. 85, Internal genitalia, dorsal view. Scale bar: 81, 82: 0.5mm; 83: 0.1mm.

FIGURES 86–90. Mysmenopsis angamarca n. sp., 86, Female habitus, dorsal view. 87, Female abdomen, posterior view. 88, Leg I, prolateral view. 89, Epigynum, ventral view. 90, Internal genitalia, dorsal view. Scale bar: 86, 87: 0.5mm; 88: 0.1mm.