Venezillo congener ( Budde-Lund, 1904 )

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: 438-443

publication ID

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

publication LSID

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

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http://treatment.plazi.org/id/03B16A4B-5667-FFFE-FF49-3322FE79FF7D

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Plazi

scientific name

Venezillo congener ( Budde-Lund, 1904 )
status

 

Venezillo congener ( Budde-Lund, 1904) 

Figs 14–16View FIGURE 14View FIGURE 15View FIGURE 16, 17DView FIGURE 17

Armadillo congener Budde-Lund, 1904: 108  .— Jeppesen, 2000: 236.

Cubaris congenera  (sic!).— Van Name, 1936: 340.— Vilela et al., 1971: 183.

Venezillo (Venezillo) congener  .— Arcangeli, 1957: 112.

Venezillo congeneris  (sic!).— Souza-Kury, 1998: 653.

Venezillo congener  .—Leistikow & Wägele, 1999: 47.— Schmalfuss, 2003: 328.

Material examined. Goiás, São Domingos, Parque Estadual de Terra Ronca   : 8 males (one with parts in micropreparations), 4 females (one with parts in micropreparations), 1 juv. ( LES 6393View Materials), Lapa Bezerra cave , 13°32’50”S, 46°22’34”W, 12 February 2012, leg. D.M. von Schimonsky, J. E. Gallão and L. B. SimõesGoogleMaps  ; 1 male ( LES 6399View Materials)  , 1 male ( LES 6400View Materials)  , 1 male ( LES 6403View Materials)  , 1 female ( LES 6414View Materials), same locality and collector as previous, 13°32’48.4”S, 46°22’32.5”W, 19 April 2012GoogleMaps  ; 3 males, 2 females, 1 juv. ( LES 1095View Materials), Lapa da Angélica cave , 13°31’22”S, 46°22’55”W, 20 May 1999, leg. E. TrajanoGoogleMaps  ; 1 female ( LES 6368View Materials)  , 1 male ( LES 6371View Materials), Suspirinho cave , 13°25’49.1”S, 46°24’49.7”W, 25 April 2012, leg. D.M. von Schimonsky, J. E. Gallão and C. S. FernandesGoogleMaps  ; 1 female ( LES 6374View Materials), Suspirinho cave , 13°25’49.1”S, 46°24’49.7”W, 9 February 2012, leg. D.M. von Schimonsky, J. E. Gallão and L. B. SimõesGoogleMaps  ; 1 male ( LES 6379View Materials), Suspirão cave , 13°25’49.1”S, 46°24’49.7”W, 9 February 2012, leg. D.M. von Schimonsky, J. E. Gallão and L. B. SimõesGoogleMaps  ; 1 female ( LES 6382View Materials), Lapa do Angélica , 13°31’29.1”S, 46°23’07.3”W, 20 April 2011, leg. M.E. Bichuette, P. P. Rizzato and J. E. GallãoGoogleMaps  ; 2 females ( LES 6383View Materials)  , 1 male, 1 female ( LES 6385View Materials), Lapa do Angélica , 13°31’29.1”S, 46°23’07.3”W, 20 April 2011, leg. M.E. Bichuette, P. P. Rizzato, and J. E. GallãoGoogleMaps  ; 2 males, 1 female ( LES 6397View Materials)  , 1 female ( LES 6398View Materials), same locality as previous, 18 April 2012, leg. D.M. von Schimonsky, J. E. Gallão and L. B. Simões  ; 1 female ( LES 6413View Materials), same locality as previous, 10 February 2012, leg. D.M. von Schimonsky, J. E. Gallão and L. B. Simões  ; 1 male, 1 female ( LES 6384View Materials), Lapa do Angélica (epigean), 13°31’29.1”S, 46°23’07.3”W, 21 April 2011, leg. M.E. Bichuette, P. P. Rizzato and J. E. GallãoGoogleMaps  ; 1 female ( LES 6406View Materials), same locality as previous, 31 October 2012, leg. M.E. Bichuette, J. E. Gallão, L. B. Simões, C. S. Fernandes and T. Zepon.GoogleMaps 

Re-description. Maximum body length: male 5.5 mm, female 6 mm. Colour light brown; cephalon with irregular unpigmented spots; pereonite 1 and posterior margins of epimera of pereonites 1–7 darker, median and paramedian portions lighter; pleon strongly pigmented.

Body in lateral view as in Figs 14AView FIGURE 14, 17DView FIGURE 17. Dorsal surface with semilunar scale-setae ( Fig. 14BView FIGURE 14). One line of small noduli laterales per side on pereonites 1–7, inserted almost at same distance from lateral margins ( Fig. 14AView FIGURE 14). Cephalon ( Fig. 14DView FIGURE 14) with rectangular frontal shield, suprantennal line absent; eyes with 18 ommatidia. Pereonite 1 with schisma on posterior corners, inner and outer lobes of schisma rounded, subequal, lateral margin grooved throughout entire length; pereonite 2 with triangular ventral tooth obliquely directed outwards and not surpassing outer margin of epimeron; pereonite 3 with small triangular ventral lobe ( Fig. 14View FIGURE 14 E–J); pereonites 1–7 with posterior margins slightly concave. Pleonites 3–5 epimera subrectangular, well developed ( Fig. 14AView FIGURE 14). Telson ( Fig. 14JView FIGURE 14) hourglass shaped, proximal part wider than distal one.

Antennula ( Fig. 14KView FIGURE 14) of three articles, proximal and distal articles subequal in length, distal article bearing eight distal aesthetascs. Antenna ( Fig. 14LView FIGURE 14) short and stout, distal article of peduncle longer than flagellum; flagellum of two articles, distal article three times as long as proximal one, bearing two lateral aesthetascs; apical organ short bearing two sensilla.

Mandibles with molar penicil consisting of many branches and dense cushion of setae, left mandible ( Fig. 15AView FIGURE 15) with 2+1 penicils, and right mandible ( Fig. 15BView FIGURE 15) with 1+1 penicils. Maxillula ( Fig. 15CView FIGURE 15) inner endite with two transverse penicils, distal margin rounded bearing thin setae; outer endite of 4+4 stout teeth. Maxilla ( Fig. 15DView FIGURE 15) outer lobe twice as wide as inner lobe, rounded and covered with thin setae; inner lobe rounded covered with thick setae. Maxilliped ( Fig. 15EView FIGURE 15) basis subrectangular; proximal article of palp with two setae distinct in length; endite subquadrangular, medial seta surpassing distal margin, outer margin rounded, distal margin bearing two short triangular setae.

Pereopod 1 carpus with transverse antennal grooming brush; dactylus with inner claw reaching median portion of outer claw, dactylar and ungual setae simple, not surpassing outer claw.

Uropod ( Fig. 16AView FIGURE 16) protopod with distal portion subrectangular, inner margin concave, endopod inserted proximally, exopod short, inserted dorsally on slight protuberance.

Pleopod exopods with monospiracular covered lungs.

Male. Pereopods ( Fig. 16B, CView FIGURE 16) without particular modifications; pereopod 7 ischium with sternal margin straight. Genital papilla ( Fig. 16DView FIGURE 16) with slender and triangular ventral shield, two subapical orifices. Pleopod 1 ( Fig. 16EView FIGURE 16) exopod triangular, small, wider than long, distal margin rounded with one short seta, outer margin slightly sinuous; endopod three times as long as exopod, distal portion slightly directed outwards and bearing some short setae. Pleopod 2 ( Fig. 16FView FIGURE 16) exopod triangular, outer margin distinctly concave bearing four setae; endopod distinctly longer than exopod. Pleopod 3–5 exopods as in Fig. 16G, HView FIGURE 16.

Remarks. The genus Venezillo  comprises 136 species with a wide distribution in the tropics ( Schmalfuss 2003, Boyko et al. 2008). The main characters distinguishing the genus are: the conglobation ability, one line of noduli laterales per side, large frontal shield of the cephalon, pereonite 1 with a schisma, pereonite 2 with a triangular ventral lobe, telson hour-glass shaped, and pleopod exopods with monospiracular covered lungs (see also Arcangeli 1957).

Budde-Lund (1904) described Armadillo congener  from the “Nabilecche” [= Nabileque] River. The author did not mention the Brazilian state where the specimens were collected. Actually, the Nabileque River is located in the Pantanal region, state of Mato Grosso do Sul. Van Name (1936) placed the species into the genus Cubaris  without any explanation and referring to Budde-Lund’s description. Vandel (1952b) and Arcangeli (1957) transferred the species to the genus Venezillo  .

Venezillo congener  is re-described here and confirmed as belonging to Venezillo  . Monospiracular covered lungs are common in several families of Crinocheta ( Ferrara et al. 1994; Paoli et al. 2002; Schmidt 2002, 2003, 2008), e.g., Philosciidae  (some species of Aphiloscia Budde-Lund, 1908  ), Eubelidae  (e.g., Aethiopopactes Ferrara & Taiti, 1982  , Angaribia Barnard, 1932  and Pseudoaethiopopactes Ferrara, 1974  ), most genera of Armadillidae  (e.g., Bethalus Budde-Lund, 1909  , Ctenorillo Verhoeff, 1942  , Diploexochus Brandt, 1833  and Tuberillo Schultz, 1982  ), all members of Agnaridae  (e.g., Agnara Budde-Lund, 1908  , Mongoloniscus Verhoeff, 1930  , Protracheoniscus Verhoeff, 1917  , and Hemilepistus Budde-Lund, 1879  ), and Porcellionidae  (e.g., Porcellio Latreille, 1804  and Tura Budde-Lund, 1908  ) ( Ferrara 1974; Taiti & Ferrara 1985, 1987; Ferrara et al. 1994; Schmidt 2003; Taiti & Gruber 2010; Campos-Filho et al. 2014, 2017b; Kashani 2014, 2016). This character certainly evolved by convergence or parallel evolution in the different families (see Paoli et al. 2002; Schmidt 2002).

Venezillo congener  inhabits decaying and humid leaf litter, both inside or outside caves. In some occasions specimens were found wandering inside caves, over gravels and humid clay, and under large rocks. This species is considered here as troglophilic.

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Isopoda

Family

Armadillidae

Genus

Venezillo

Loc

Venezillo congener ( Budde-Lund, 1904 )

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

Venezillo congener

Schmalfuss, H. 2003: 328
2003
Loc

Armadillo congener

Jeppesen, P. 2000: 236
Budde-Lund, G. 1904: 108
2000
Loc

Venezillo congeneris

Souza-Kury, L. A. 1998: 653
1998
Loc

Venezillo (Venezillo) congener

Arcangeli, A. 1957: 112
1957
Loc

Cubaris congenera

Vilela, E. F. & Kudo, H. & Loureiro, M. C. 1971: 183
Van Name, W. 1936: 340
1936