Mexentypesa chiapas Raven, 1987

Salinas-Velasco, Héctor Vicente, Valdez-Mondragón, Alejandro & Villegas, Julián Bueno-, 2024, A new species of the spider genus Mexentypesa Raven (Araneae: Nemesiidae) from Hidalgo, Mexico and taxonomic comments on M. chiapas Raven, Zootaxa 5453 (2), pp. 233-244 : 241-243

publication ID

https://doi.org/ 10.11646/zootaxa.5453.2.4

publication LSID

lsid:zoobank.org:pub:DC7283A1-7BB1-4FD4-83FA-7F8A8779AD7E

DOI

https://doi.org/10.5281/zenodo.11245166

persistent identifier

https://treatment.plazi.org/id/03E087A9-BE41-FFF9-FF6F-FE72FC91A1B1

treatment provided by

Plazi

scientific name

Mexentypesa chiapas Raven, 1987
status

 

Mexentypesa chiapas Raven, 1987 View in CoL

Figs. 28–44 View FIGURES 28–31 View FIGURES 32–36 View FIGURES 37–44

Mexentypesa chiapas Raven, 1987: 358 View in CoL , f. 1–9 (Description male and female).

= Aptostichus sabinae Valdez-Mondragón & Cortez-Roldán, 2016: 84 View in CoL View Cited Treatment , f. 1–20 ( Description male and female), syn. n. Type material. MEXICO: Chiapas: 1♂ male holotype, 1♀ female paratype (AMNH), from Ocosingo (altitude 900 m; June 25, 1950, C. and N. Goodnight, L. J. Stannard Cols. (not examined).

Other material examined. MEXICO: Oaxaca: 1♂ male (CNAN-T1121) from Cueva Li Nita (lat 18.14767°, lon -96.79844°, 1919 m), Municipio Huautla de Jiménez , April 12, 2014, J. Mendoza, J. Cruz, S. Davlantes, M. Minkton Cols. (examined) .

Diagnosis. See comparative diagnosis of M. hidalguensis above.

Description. See Valdez-Mondragón and Cortez-Roldán (2016: figs 1–20) for a complete and detailed description of the male, and Raven (1987: fig. 8) for a complete description of the female.

Remarks. Based on the original description and illustrations by Valdez-Mondragón and Cortez-Roldán (2016: figs 1–20), the male holotype of Aptostichus sabinae Valdez-Mondragón & Cortez-Roldán, 2016 is identical to the male holotype and description by Raven (1987) of Mexentypesa chiapas Raven, 1987 . For this reason, we consider A. sabinae as a junior synonym of M. chiapas . Although Raven (1987) reports that the male holotype used in the description of the species had both embolus broken, the rest of the shape of the male palp, as well as the other body features, are the same (Robert Raven, pers. com.): a unique embolus, very long, slender, and sigmoidal, the palp tibiae with ventral and prolateral massive spines ( Figs 32–36 View FIGURES 32–36 ) (broken in Raven 1987: fig. 4); the metatarsus I with a retrolateral-ventral small finger-shaped projection ( Figs 39–41 View FIGURES 37–44 ), also described by Raven (1987: fig. 2); the tibiae and metatarsi III and IV have many ventral spines ( Fig. 42 View FIGURES 37–44 ), as described by Raven (1987); similar body coloration as described by Raven (1987), with reddish brown coloration, even the abdomen dorsally brown with white mottling, ventrally with brown areas on pallid yellow as also reported by Valdez-Mondragón and Cortez-Roldán (2016) ( Figs 28–31 View FIGURES 28–31 ). Although around 500 km separate the type locality (Ocosingo, Chiapas) from the locality (Cueva Li Nita, Huautla de Jiménez, Oaxaca) reported by Valdez-Mondragón and Cortez-Roldán (2016) ( Fig. 45 View FIGURE 45 ), as well as different habitats, we cannot know the geological histories of these areas. Additional molecular evidence might help to corroborate the morphology between specimens from both localities and understand these distantly allopatric populations.

Natural history. Raven (1987) did not report any natural history data about the specimens collected from the type locality. However, Valdez-Mondragón and Cortez-Roldán (2016) mentioned that the specimen from Cueva Li Nita was collected inside the cave, in a temperate forest at 1919 m of elevation. Although the male specimen was collected within the cave, it does not present any troglomorphism or adaptation to cave life.

Distribution. MEXICO: Chiapas, Oaxaca ( Fig. 45 View FIGURE 45 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Nemesiidae

Genus

Mexentypesa

Loc

Mexentypesa chiapas Raven, 1987

Salinas-Velasco, Héctor Vicente, Valdez-Mondragón, Alejandro & Villegas, Julián Bueno- 2024
2024
Loc

Aptostichus sabinae Valdez-Mondragón & Cortez-Roldán, 2016: 84

Valdez-Mondragon, A. & Cortez-Roldan, M. R. 2016: 84
2016
Loc

Mexentypesa chiapas Raven, 1987: 358

Raven, R. J. 1987: 358
1987
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