Masteria pasochoa Dupérré & Tapia, Duperre & 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: 553-557

publication ID

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

publication LSID

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

persistent identifier

http://treatment.plazi.org/id/039EBE72-B520-AC7B-FF6F-FC892C34FE26

treatment provided by

Plazi

scientific name

Masteria pasochoa Dupérré & Tapia
status

new species

Masteria pasochoa Dupérré & Tapia   , new species

Figs 12A, B View FIGURES 12 , 13A–D View FIGURES 13 , 14A, B View FIGURES 14 , 15A View FIGURES 15 , 20G, H View FIGURES 20 , 23A View FIGURES 23 , map 1.

Type material. Male holotype from Ecuador, Pichincha Province, Valle Chillos, Pasochoa Forest Reserve (- 0.443585 -78.507632) 3080m, June 2013, E.E. Tapia, N. Dupérré ( QCAZ) GoogleMaps   .

Female allotype: Pichincha Province, Pululahua Geobotanical Reserve (00.059720 –78.509230), 2128m, 2 August 2015, E.E. Tapia, N. Dupérré, A.A. Tapia ( QCAZ) GoogleMaps   .

Etymology. The specific name is a noun in apposition taken from the type locality the Pasochoa Reserve.

Diagnosis. Males most resembles M. colombiensis   , M. lewisi   and M. amarumayu   but can be distinguished as such: from M. colombiensis   by the presence of six eyes ( Fig. 12A View FIGURES 12 ), eight in the latter species ( Passanha & Brescovit 2018: fig. 13A); from M. lewisi   by the absence of 4–6 short strong spines on palpal tibia ( Fig. 13B View FIGURES 13 ) that are present in the latter ( Passanha & Brescovit 2018: fig. 15B); and from M. amarumayu   by the presence of P1 ( Fig. 23A View FIGURES 23 ) that is absent in the latter ( Passanha & Brescovit 2018: fig. 16C). Females are distinguished from all species by their unique internal genitalia with unilobed spermathecae, and large, triangular spermathecae bases ( Fig. 15A View FIGURES 15 ).

Description. Male (holotype): Total length: 4.10; carapace length: 1.95; carapace width: 1.38; abdomen length: 2.15. Carapace light brown with reticulation in the cephalic groove, radiating lines and pars thoracica; pars thoracica with arched row of long strong macrosetae ( Fig. 12A View FIGURES 12 ). Chelicerae yellow; promargin with nine teeth and ~15 smaller mesobasal teeth. Endites yellow without cuspules. Labium yellow without cuspules. Sternum yellow ( Fig. 12B View FIGURES 12 ). Eyes: six eyes grouped; AME absent, ALE oval; PLE the largest; PME the smallest, oval, posterior row recurved ( Figs 12A View FIGURES 12 , 20G View FIGURES 20 ). Abdomen elongated, whitish-gray covered with long setae ( Fig. 12B View FIGURES 12 ). Spinnerets: PLS 1.55 (0.58/0.43/0.54). Leg formula 4123; leg measurements: I 5.28 (1.45/0.71/1.35/0.94/083); II 4.37 (1.24/0.62/0. 88/0.89/074); III 4.13 (1.17/0.55/0.78/0.94/0.69); IV 5.53 (1.55/0.68/1.23/1.21/0.86). Leg spination: I: d1-1-1-1-1; tibiae v1-1; II: femur d1-1-1-1; patella v2ap, p1; tibia v1-2-1, p1; metatarsus v1-1-1, p1; III: femur d1-1-1; patella d2-2, p1, v2ap; tibia d1-1, v2-2, p2-2, r2-2; metatarsus d1-2, v1-1-2ap, p1, r1-1; IV: femur d1-1-1; patella pd1, v2ap; tibia d1-1-1, v1-1-2ap, p1-1-1, r1-1-1, metatarsus d1, v2-2-1ap, p1-1, r1-1-1. Tibia I: P1 triangular, P2 with an apical strong spine; P3 with a with two apical spines ( Fig. 23A View FIGURES 23 ). Metatarsus I with large, rounded basal spine ( Fig. 23A View FIGURES 23 ). Palp: palpal tibia 2x the size of cymbium, 3x longer than wide ( Fig. 13A View FIGURES 13 ); cymbium 2x longer than wide, with four apical spines ( Fig. 13A, B View FIGURES 13 ); palpal bulb elongated-oval, embolus short, straight with strongly bend tip ( Fig. 13C View FIGURES 13 ).

Female (allotype): Total length: 5.04; carapace length: 2.35; carapace width: 1.94; abdomen length: 2.69. Carapace light brown with reticulation in the cephalic groove, radiating lines and pars thoracica; pars thoracica with arched row of long strong macrosetae ( Fig. 14A View FIGURES 14 ). Chelicerae light brown; promargin with 10 teeth and ~18 small- er mesobasal teeth. Endites yellow without cuspules. Labium yellow without cuspules. Sternum yellow, without sigilla ( Fig. 14B View FIGURES 14 ). Eyes: six eyes grouped; AME absent, ALE and PLE almost equal; PME the smallest, oval; posterior row strongly recurved ( Figs 14A View FIGURES 14 , 20H View FIGURES 20 ). Abdomen elongated, grayish covered with long setae ( Fig. 14A View FIGURES 14 ). Spinnerets: PLS 1.81 (0.66/0.38/0.77). Legs coloration uniformly pale yellow. Leg measurements: I missing; II missing; III 4.96 (1.48/0.68/0.95/0.98/0.87); IV 6.69 (1.73/0.80/1.70/1.48/0.98). Leg spination: I and II missing; III: femur d1-1-1-1; 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 d1-1-1-1; patella p1, v2ap, r1; tibia d1-1, v1-2-2ap, p1-1-1, r1-1, metatarsus d1, v2-1-1ap, p1-1, r1-1. Palpal claw with ~15 teeth.

Genitalia: unilobed spermathecae with large, oval ectal lobes (EcL), ental lobes (EnL) small and triangular; spermathecae bases wide, triangular; glandular region with large glands widely interspaced on the spermathecae bases ( Fig. 15A View FIGURES 15 ).

Distribution. Known from two localities in Pichincha Province.

Natural History. The male specimen was hand collected at 3080m in an inter-Andean humid montane forest ( Valencia & Jørgensen 2008) and the female was hand collected at 2128m, in an evergreen mountain shrubland of the northern Ecuadorian Andes ( Josse & Aguirre 2013).

Note. Even though the male and female were not collected at the same locality (~ 50km), the specimens were matched based on eyes configuration, size, and altitudinal range.

QCAZ

Museo de Zoologia, Pontificia Universidad Catolica del Ecuador

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Dipluridae

Genus

Masteria