Mysmenopsis choco, 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 : 15-18

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.3809822

persistent identifier

https://treatment.plazi.org/id/9A2087C1-FFDA-956E-3BAF-FC5455ACFCB4

treatment provided by

Plazi

scientific name

Mysmenopsis choco
status

new species

Mysmenopsis choco new species

Figs 31 – 40 View FIGURES 31–35 View FIGURES 36–40 , 224, 225 View FIGURES 222–229 , map 1 (orange circle).

Material examined. Male holotype and female allotype from Ecuador, Esmeraldas Province, Alto Tambo, Reserva Otokiki , (00.91271 -78.57110) 735m, 5 oct. 2015, in Linothele sp. web, E.E. Tapia ( QCAZ) GoogleMaps . Paratypes: 5♂ 5♀, same data ( ZMH-A0001559 ) ; Otokiki Reserve (00.91325 -78.565679) 638m, 5 oct. 2015, 1♂ 2♀, in Linothele sp. web, E. Tapia, I. Tapia ( QCAZ) GoogleMaps .

Additional material examined. Ecuador: Esmeraldas Province: Otokiki Reserve , (00.91325 -78.565679) 638m, 5 oct. 2015, 1♂ 2♀ 1juv., in Linothele web, E. Tapia, I. Tapia ( DTC); (00.911036 -78.570701) GoogleMaps 700m, 5 oct. 2015, 1♂ 1♀, in Linothele web, E. Tapia, I. Tapia ( DTC) ; Alto Tambo, Sector Palo Amarillo , (00.97681 -78.56061) 620m, 17 Mar. 2019, 2♀, in Linothele web, E. Tapia, I. Tapia ( ZMH-A0001886 ) GoogleMaps .

Etymology. The specific name is a noun in apposition taken from the Chocó region, one of the most biodiverse regions of the world.

Diagnosis. Males and females are distinguished by their abdominal pattern consisting of a longitudinal line of four white spots dorsally ( Figs 32, 33 View FIGURES 31–35 ). Male most resemble M. lasrocas n. sp., M. corazon n. sp. and M. alvaroi n. sp. but can be distinguished as such: from M. lasrocas n. sp. by the less pronounced paracymbium and curved embolus ( Figs 37, 38 View FIGURES 36–40 ) much more pronounced paracymbium prolatero-dorsally and straight embolus in the latter ( Figs 57, 58 View FIGURES 56–60 ); from M. corazon n. sp., and M. alvaroi n. sp. by the blunt base of the embolus, with sharp edge in these two species ( Figs 104 View FIGURES 102–106 , 112 View FIGURES 110–112 ), dull in M. choco n. sp. ( Fig. 38 View FIGURES 36–40 ). Females most resemble M. lloa n. sp. but can be differentiated by the epigynum without sclerotized, darker band sub-apically ( Fig. 39 View FIGURES 36–40 ) present in the latter species ( Fig. 84 View FIGURES 81–85 ).

Description. Male (holotype): Total length: 1.8; carapace length: 0.89; carapace width: 0.74; abdomen length: 0.89. Cephalothorax: carapace orange-brown, pear-shaped; suffused black along pars cephalica and radiating lines ( Fig. 31 View FIGURES 31–35 ). Sternum dark brown suffused with black; covered with long setae. Clypeus dark brown; low (3x AME). Chelicerae light 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 grey with two small white spots apically ( Fig. 31 View FIGURES 31–35 ) followed by longitudinal lines of four white spots ( Fig. 32 View FIGURES 31–35 ). Legs: orange; femur and tibia I enlarged, metatarsus I straight. Legs spination: patellae I–IV with one macroseta; tibia I with two prolateral clasping spurs and without macrosetae; metatarsus I with row of seven macrosetae prolateroventrally and two clasping spurs apically (small one not visible on image) ( Fig. 34 View FIGURES 31–35 ); tibiae I–IV with one macro seta dorso-proximally; tibia II with three macrosetae ventrally. Total length leg I: 3.05 (0.97/0.23/0.87/0.46/0.52). Genitalia: palpal tibia globular; retrolateral ledge with short angular projection; in total bearing eight cusps; two retrolateral trichobothria ( Fig. 36 View FIGURES 36–40 ). Cymbium apically rounded, deeply excavated ( Fig. 37 View FIGURES 36–40 , arrow); paracymbium low and rectangular prolatero-dorsally ( Fig. 37 View FIGURES 36–40 ). Tegulum oval ( Fig. 36 View FIGURES 36–40 ). Embolus spine-like, short and curved on a wide, plate-like base ( Fig. 38 View FIGURES 36–40 ).

Female (allotype): Total length: 2.38; carapace length: 0.95; carapace width: 0.78; abdomen length: 1.43. Cephalothorax ( Fig. 31 View FIGURES 31–35 ), 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 radius, AME-LE touching; ALE-PLE contiguous, LE-PME separated by their diameter; PME separated by their radius. Abdomen: as in male ( Figs 31, 33 View FIGURES 31–35 ). Legs: coloration as in male; femur I enlarged with pointed, medial tubercle ( Fig. 35 View FIGURES 31–35 ). 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: 3.27 (1.03/0.33/0.85/0.58/0.48). Genitalia: epigynum rather flat, anterior epigynal margin not well delimited, posterior epigynal margin pointed ( Fig. 39 View FIGURES 36–40 ). Dorsal epigynal plate with straight anterior margin ( Fig. 40 View FIGURES 36–40 ). Internal genitalia (paratype): spermathecae large and rounded ( Figs 40 View FIGURES 36–40 , 225 View FIGURES 222–229 ); copulatory openings situated medially ( Fig. 224 View FIGURES 222–229 ); copulatory ducts short, positioned medially ( Fig. 40 View FIGURES 36–40 ); fertilization ducts long, straight and sclerotized basally, curving and transparent apically ( Figs 40 View FIGURES 36–40 , 225 View FIGURES 222–229 ).

Distribution. Ecuador, Esmeraldas Province.

Natural history. Specimens were collected in Linothele sp. webs, the species inhabit the Andean region and was found in an evergreen foothill forest on the western side of the Andes (BsPn01) ( Guevara & Morales 2013) between 638– 735m. Mysmenopsis choco n. sp. is found in sympatry with M. otokiki n. sp. and M. awa n. sp. in Otokiki Reserve and in sympatry with M. awa n. sp. in Sector Palo Amarillo.

QCAZ

Museo de Zoologia, Pontificia Universidad Catolica del Ecuador

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Mysmenidae

Genus

Mysmenopsis