Mysmenopsis angamarca, 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 : 30-33

Mysmenopsis angamarca new species

Figs 86 – 90 , map 1 (red star).

Material examined. Female holotype from Ecuador, Cotopaxi Province, Angamarca, San Pablo (-01.13214 - 78.92961) 2500m, 5 May 2016, E. Tapia ( QCAZ).

Additional material examined. Ecuador, Cotopaxi Province: Angamarca, San Pablo (-01.13214 -78.92961) 2500m, 4 juv., 5 May 2016, E. Tapia ( QCAZ) .

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

Diagnosis. This species most resemble M. lloa n. sp. and M. cienaga but can be distinguished as such: from M. lloa n. sp. by the dark sclerotized band apically ( Fig. 89 ), while the dark sclerotized band is sub-apical in M. lloa n. sp. ( Fig. 84 ); from M. cienaga by the femur I with a pointed tubercle ( Fig. 88 ), absent in the latter ( Baert 1990).

Description. Female (holotype): Total length: 2.73; carapace length: 1.1; carapace width: 0.94; abdomen length: 1.63. Cephalothorax: carapace dark brown, pear-shaped; suffused black along pars cephalica and radiating lines ( Fig. 86 ). Sternum dark brown suffused with black; covered with long setae. Clypeus dark brown; low (3x AME). Chelicerae dark 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 radius. Abdomen: round, dark grey with white patches in a circular pattern anteriorly, dorsally with white patches in a zigzag pattern ( Figs 86, 87 ). Legs: femur I dark brown; femora II-IV light yellow-orange with darker bands basally, medially and apically; tibiae I-IV light orange-brown with dark bands mesally and apically; metatarsi I-IV light orange-brown with dark band apically, tarsi light orange; femur I enlarged with medial, pointed tubercle ( Fig. 88 ). Legs spination: patellae I-IV with one macroseta; tibiae I-IV with one macroseta dorso-proximally; tibiae I-II with two to three macrosetae ventrally. Total length leg I: 3.52 (1.2/0.4/0.84/0.57/0.51). Genitalia: epigynum protruding, anterior epigynal margin not well delimited, posterior epigynal margin pointed with apical sclerotization ( Fig. 89 ). Dorsal epigynal plate anterior margin wing-like, large sclerotized rim medially ( Fig. 90 ). Internal genitalia with large and rounded spermathecae; copulatory ducts thick, directed inward; fertilization ducts procurved, well sclerotized basally, transparent and curved apically ( Fig. 90 ).

Male: Unknown.

Distribution. Only known at the type locality in Cotopaxi Province.

Natural history. The female holotype was collected in a Linothele sp. web at 2500m in the Andean ecoregion. M. angamarca n. sp. was found in an evergreen mountain shrubland of the western Andes (AsMn01) ( Josse & Aguirre, 2013).

Note. The female was found with three penultimate males, their colour pattern matches exactly, and does not concord with the male of M. hunachi n. sp. which occurs in the same ecoregion.

Figures

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.

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.