Masteria papallacta Dupérré & Tapia, 2021

Dupérré, Nadine, Tapia, Elicio, Quandt, Dietmar, Crespo-Pérez, Verónica & Harms, Danilo, 2021, From the lowlands to the highlands of Ecuador, a study of the genus Masteria (Araneae, Mygalomorphae, Dipluridae) with description of seven new species, Zootaxa 5005 (4), pp. 538-568 : 549

publication ID

https://doi.org/10.11646/zootaxa.5005.4.4

publication LSID

lsid:zoobank.org:pub:43AB6083-4E39-47DD-819E-8EC21F3B3C90

DOI

https://doi.org/10.5281/zenodo.5150944

persistent identifier

https://treatment.plazi.org/id/039EBE72-B524-AC63-FF6F-FECC2DA3F917

treatment provided by

Plazi

scientific name

Masteria papallacta Dupérré & Tapia
status

new species

Masteria papallacta Dupérré & Tapia , new species

Figs 8A, B View FIGURES 8 , 9A–D View FIGURES 9 , 10 A, B View FIGURES 10 , 11A View FIGURES 11 , 20E, F View FIGURES 20 , 22C View FIGURES 22 . map. 1.

Type material. Male holotype and female allotype from Napo Province, Ecuador, Páramo de Papallacta, site 3 (- 00.281881 -78.137040) 4020m, 1–8 Mar. 2020, pitfall, E.E. Tapia, N. Dupérré, A.A. Tapia ( QCAZ) GoogleMaps . Paratypes: 4♀ same data as the holotype ( ZMH-A00014698 , A00014699, QCAZ) GoogleMaps GoogleMaps .

Etymology. The specific name is a noun in apposition taken from the type locality Páramo de Papallacta.

Diagnosis. Males resemble M. jatunsacha n. sp., and M. chalupas n. sp. but can be distinguished from both species by the straight embolus ( Fig. 9C View FIGURES 9 ), that is twisted in the two other species ( Figs 3C View FIGURES 3 , 7C View FIGURES 7 ). Females are distinguished from all species by their small, tortuous ental lobes ( Fig. 11A View FIGURES 11 ).

Description. Male (holotype): Total length: 2.74; carapace length: 1.35; carapace width: 1.08; abdomen length: 1.39. Carapace light brown without obvious reticulation in the cephalic groove and pars thoracica, covered with long setae ( Fig. 8A View FIGURES 8 ). Chelicerae yellow; promargin with 12 teeth and ~12 smaller mesobasal teeth. Endites yellow without cuspules. Labium yellow without cuspules. Sternum yellow, covered with setae ( Fig. 8B View FIGURES 8 ). Eyes: six eyes grouped; AME absent; ALE oval; PLE the largest, oval; PME the smallest, oval; posterior row recurved ( Figs 8A View FIGURES 8 , 20E View FIGURES 20 ). Abdomen elongated, grayish covered with long setae ( Fig. 8A View FIGURES 8 ). Spinnerets: PLS 0.97 (0.36/0.29/0.32). Legs coloration uniformly pale yellow. Leg formula 4123; leg measurements: I 3.65 (1.02/0.56/0.79/0.67/0.61); II 2.85 (0.81/0.48/0.55/0.55/0.46); III 2.69 (0.82/0.33/0.53/0.49/0.52); IV 3.84 (1.07/0.43/0.90/0.79/0.65). Leg spination: I: no spines observed; II: femur d1-1; patella v1, p1; tibia v1-1, p1; metatarsus v1-1; III: femur d1-1-1; patella p1, v2ap; tibia d1-1, v2-2, p1-1, r1-1; metatarsus d1-2, v2-3ap, p1, r1-1; IV: femur d1-1-1; patella p1, v1ap, r1; tibia d1, v1-2ap, p1-1-1, r1-1, metatarsus d1, v2-2-2ap, p1-1, r1-1-1. Tibia I: P1 absent; P2 with an apical strong, curved spine; P3 with two apical spines ( Fig. 22C View FIGURES 22 ). Metatarsus I with small pointed basal spine ( Fig. 22C View FIGURES 22 ). Palpal tibia 1.7x the length of cymbium, 2.3x longer than wide, with 28 spines grouped in U on retrolateral side, ( Fig. 9B, C View FIGURES 9 ); cymbium 2x longer than wide, with four apical spines; palpal bulb elongated-oval, embolus short, straight, strongly sclerotized ( Fig. 9C View FIGURES 9 ).

Female (allotype): Total length: 4.47; carapace length: 1.96; carapace width: 1.57; abdomen length: 2.51. Coloration as in male ( Fig. 10A, B View FIGURES 10 ). Chelicerae yellow; promargin with 10 teeth and ~16 smaller mesobasal teeth. Endites yellow without cuspules. Labium yellow without cuspules. Sternum yellow, covered with long setae ( Fig. 10B View FIGURES 10 ). Eyes: six eyes grouped; AME absent; ALE oval; PLE the largest, oval; PME the smallest, oval; posterior almost straight ( Fig. 20F View FIGURES 20 ). Abdomen elongated, uniformly beige, covered with setae ( Fig. 10B View FIGURES 10 ). Spinnerets: PLS 0.97 (0.56/0.43/0.50). Legs coloration uniformly pale yellow. Leg formula 4123; leg measurements: I 4.44 (1.28/0. 74/1.03/0.76/0.63); II 3.63 (1.05/0.59/0.69/0.71/0.59); III 3.73 (1.17/0.44/0.70/0.76/0.66); IV 5.16 (1.47/0.61/1.24/ 1.06/0.78). Leg spination: I: d1-1-1-1-1; patella v1, tibiae v1-1; II: femur d1-1-1-1; patella v2ap, p1; tibia v1-1, p1; metatarsus v1-1-1, p1; III: femur d1-1-1; patella d1-2, p1, v1ap; tibia d1-1, v2-2, p1-1, r1-1; metatarsus d1-2, v1-1- 2ap, p1, r1-1; IV: femur d1-1-1; patella pd1, v2ap, r1; tibia d1-1, v1-2-2ap, p1-1-1, r1-1, metatarsus d1, v2-1-1ap, p1-1, r1-1-1. Palpal claw with ~20 teeth. Genitalia: unilobed spermathecae with short, oval ectal lobes (EcL), ental lobes tortuous (EnL); spermathecae bases wide; glandular region with large glands closely spaced on the spermathecae bases ( Fig. 11A View FIGURES 11 ).

Distribution. Ecuador: only found at the type locality.

Natural History. Specimens were collected by pitfall at high elevation (4020m) in an evergreen shrubland and grassland of the Andean Páramo ( Salgado et al. 2013).

QCAZ

Museo de Zoologia, Pontificia Universidad Catolica del Ecuador

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Dipluridae

Genus

Masteria