Xangoniscus aganju Campos-Filho, Araujo & Taiti, 2014,

Campos-Filho, Ivanklin Soares, Fernandes, Camile Sorbo, Cardoso, Giovanna Monticelli, Bichuette, Maria Elina, Aguiar, José Otávi, 2019, Two new species and new records of terrestrial isopods (Crustacea, Isopoda, Oniscidea) from Brazilian caves, Zootaxa 4564 (2), pp. 422-448: 429-430

publication ID

https://doi.org/10.11646/zootaxa.4564.2.6

publication LSID

lsid:zoobank.org:pub:3B988AC3-1380-4E29-8E71-402BA89ACDAD

persistent identifier

http://treatment.plazi.org/id/03B16A4B-5670-FFE3-FF49-32E7FD4BFDC7

treatment provided by

Plazi

scientific name

Xangoniscus aganju Campos-Filho, Araujo & Taiti, 2014
status

 

Xangoniscus aganju Campos-Filho, Araujo & Taiti, 2014 

Figs 7View FIGURE 7, 17bView FIGURE 17, 18View FIGURE 18 A–C

Styloniscidae  indet. 3 Gallão & Bichuette, 2018: 12, table 2.

Styloniscidae  indet. 4 Gallão & Bichuette, 2018: 12, table 2.

Material examined. Bahia: 1 male, 5 females ( LES 6437View Materials), Carinhanha, Serra do Ramalho karst area, Caverna Domingão , 13°44’41”S, 43°50’00”W, 27 July 2012, leg. M.E. Bichuette, J. E. Gallão and P. P. RizzatoGoogleMaps  ; 4 males ( LES 14351View Materials), 1 female ( LES 6435View Materials), Coribe, Serra do Ramalho karst area, Caverna Chico  Pernambuco, 13°49’10”S, 44°04’15”W, 28 July 2012, leg. M.E. Bichuette, J. E. Gallão, L. Senna-Horta and P.P. Rizzato.GoogleMaps 

Remarks. To date, the genus Xangoniscus  comprises three troglobiotic species with amphibious life-style, all endemic to Brazilian caves: Xangoniscus aganju  , X. odara  , and X. itacarambiensis  . The genus is mainly defined by the complex wrench-like distal portion of the male pleopod 2 endopod, unique among the Styloniscidae  (see Campos-Filho et al. 2014, 2016; Bastos-Pereira et al. 2017).

The specimens from the two caves in the Bahia state here examined are tentatively identified as X. aganju  since they show the same morphological characters. Only small differences are present in the apical lobes of the male pleopod 2 endopod (compare fig. 13C in Campos-Filho et al. (2014) with Fig. 7A, BView FIGURE 7, specimens from Caverna Chico Pernambuco, and Fig. 7CView FIGURE 7, specimens from Caverna Domingão). A molecular analysis of all the populations of X. aganju  may clarify if these small differences indicate distinct taxa.

The Chico Pernambuco and the Caverna Domingão caves are located in the Serra do Ramalho karst area, state of Bahia, northeastern Brazil. The caves are not legally protected and their surroundings are used for agriculture, pasture and projects for mining activities ( Fig. 2A, BView FIGURE 2). The population of X. aganju  from Chico Pernambuco is abundant in part of the drainage (level base stream) of the cave, reaching 8–10 inds/m 2 and showing gregarious habitus ( Fig. 18BView FIGURE 18). The population from Caverna Domingão occurs in a phreatic habitat, a relatively large pool in the distal part of the cave with a high abundance, reaching 20 inds/m 2, preferring submersed organic matter (mainly trunks) and showing gregarious habits ( Fig. 18CView FIGURE 18).

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Isopoda

Family

Styloniscidae

Genus

Xangoniscus

Loc

Xangoniscus aganju Campos-Filho, Araujo & Taiti, 2014

Campos-Filho, Ivanklin Soares, Fernandes, Camile Sorbo, Cardoso, Giovanna Monticelli, Bichuette, Maria Elina, Aguiar, José Otávi 2019
2019
Loc

Styloniscidae

Gallao, J. E. & Bichuette, M. E. 2018: 12
2018
Loc

Styloniscidae

Gallao, J. E. & Bichuette, M. E. 2018: 12
2018