Mysmenopsis alvaroi, 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 : 36

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.3809846

persistent identifier

https://treatment.plazi.org/id/9A2087C1-FFF7-955C-3BAF-FF4354A6F8A7

treatment provided by

Plazi

scientific name

Mysmenopsis alvaroi
status

sp. nov.

Mysmenopsis alvaroi View in CoL new species

Figs 97–106 View FIGURES 97–101 View FIGURES 102–106 , map 1 (black star).

Material examined. Male holotype and female allotype from Ecuador, Cotopaxi Province, San Ramon (-01.14891 -79.12135) 1052m, 6 Mar. 2019, ex: Linothele sp. E. Tapia GoogleMaps . Paratypes: 4♀, same data ( QCAZ, ZMH-A 0001909, 1910).

Additional material examined. Ecuador: Imbabura Province: Communidad de Junín (00.30158 -78.64083) 1868m, 2♂, in Linothele web., 4 Apr. 2016, E.E. Tapia ( ZMH-A0001888 ) GoogleMaps .

Etymology. The specific name is in honor of Ecuadorian entomologist Álvaro Barragan for his work in forensic entomolgy, ecology and evolution of insects.

Diagnosis. Males are differentiated from all species by the large, square retrolateral ledge of the palpal tibia with four cusps and the strongly angular embolus tip ( Figs 102, 104 View FIGURES 102–106 ). Females resembles M. onorei and M. pululahua n. sp., but can be distinguished from M. onorei by the more acutely pointed anterior margin of epigynum ( Fig. 105 View FIGURES 102–106 ; Dupérré & Tapia 2015, fig. 6) and from both species by the wide sclerotized posterior margin of the epigynum ( Fig. 105 View FIGURES 102–106 ), not sclerotized in the latter two species ( Fig. 79 View FIGURES 76–80 ; Dupérré & Tapia 2015, fig. 6).

Description. Male (holotype): Total length: 1.65; carapace length: 0.8; carapace width: 0.76; abdomen length: 0.85. Cephalothorax: carapace dark brown, pear-shaped; suffused black along pars cephalica and radiating lines ( Fig. 97 View FIGURES 97–101 ). Sternum light brown suffused with black; covered with long setae. Clypeus dark 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 radius. Abdomen: oval, dark grey with foliate pattern medially and white patches laterally ( Fig. 98 View FIGURES 97–101 ). Legs: femur I light brown with basal and apical darker brown band; femora II-IV light brown with basal, median and apical dark bands; tibiae I-IV light brown with dark band medio and apico-ventrally; metatarsi I-IV light brown with dark band apically, tarsi light yellow; femur and tibia I enlarged, metatarsus I curved. Legs spination: patellae I-IV with one macroseta; tibia I with two prolateral clasping spurs and one macroseta; metatarsus I with row of six macrosetae prolatero-ventrally and two clasping spurs apically (small one not visible on image) ( Fig. 100 View FIGURES 97–101 ); tibiae I-IV with one macroseta dorsoproximally; tibia II with three macrosetae ventrally. Total length leg I: 3.06 (1/0.32/0.81/0.43/0.5). Genitalia: palpal tibia globular; ventral ledge squared, bearing four cusps, ventral ledge small with three cusps; two retrolateral trichobothria ( Fig. 102 View FIGURES 102–106 ). Cymbium apically truncated, with shallow excavation; paracymbium triangular, not excavated prolatero-dorsally ( Fig. 93 View FIGURES 91–93 ). Tegulum oval ( Fig. 102 View FIGURES 102–106 ). Embolus short, spine-like, with strongly curved tip and small sharply pointed embolic apophysis ( Figs 102, 104 View FIGURES 102–106 ).

Female (allotype): Total length: 2.17; carapace length: 0.88; carapace width: 0.77; abdomen length: 1.29. Cephalothorax ( Fig. 97 View FIGURES 97–101 ), 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 radius. Abdomen: as in male ( Figs 97, 99 View FIGURES 97–101 ). Legs: coloration pattern as in male, slightly darker; femur I enlarged with medial, short and pointed tubercle ( Fig. 101 View FIGURES 97–101 ). Legs spination: patellae I-IV with one macroseta; tibiae I-IV with one macroseta dorso-proximally; tibiae I-II with five to six macrosetae ventrally. Total length leg I: 2.9 (0.8/0.32/0.74/0.56/0.48). Genitalia: epigynum protruding, anterior margin not well delimited, posterior epigynal margin well sclerotized and strongly pointed ( Fig. 105 View FIGURES 102–106 ). Dorsal epigynal plate with wing-like anterior margin ( Fig. 106 View FIGURES 102–106 ). Internal genitalia (paratype): spermathecae large and rounded; copulatory ducts not observed; fertilization ducts oblique, well sclerotized basally, apically transparent and curved ( Fig. 106 View FIGURES 102–106 ).

Distribution. Cotopaxi and Imbabura Provinces.

Natural history. Male holotype and females were collected in an evergreen seasonal foothill forest of the western Andes at 1052m (BePn01) (Morales, 2013) in Linothele sp. web (in sympatry with M. corazon n. sp.) Two additional males were collected in an evergreen low mountain forest of the western Andes (BsBn04) ( Iglesis, Santiana & Chinchero, 2013; in sympatry with M. junin n. sp.)

QCAZ

Museo de Zoologia, Pontificia Universidad Catolica del Ecuador

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Mysmenidae

Genus

Mysmenopsis

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