Ctenorillo ferrarai, Campos-Filho & Araujo & Bichuette & Trajano & Taiti, 2014

Campos-Filho, Ivanklin Soares, Araujo, Paula Beatriz, Bichuette, Maria Elina, Trajano, Eleonora & Taiti, Stefano, 2014, Terrestrial isopods (Crustacea: Isopoda: Oniscidea) from Brazilian caves, Zoological Journal of the Linnean Society (Zool. J. Linn. Soc.) 172 (2), pp. 360-425 : 412-417

publication ID	https://doi.org/ 10.1111/zoj.12172
publication LSID	lsid:zoobank.org:pub:246C2229-308B-4A9B-A150-CE1D27D2EBD8
persistent identifier	https://treatment.plazi.org/id/CF6FE30C-FF95-FFB0-00EB-CF94FB994E4D
treatment provided by	Marcus
scientific name	Ctenorillo ferrarai
status	sp. nov.

Treatment

CTENORILLO FERRARAI View in CoL CAMPOS- FILHO, ARAUJO & TAITI SP. NOV.

FIGURES 37–40 View Figure 37 View Figure 38 View Figure 39 View Figure 40

Type material

Holotype: ♂, Brazil, Pará, Canaã dos Carajás, FLONA Carajás ( FLONA – National forest ), Gruta N 5S 07, 6°06′20″S, 50°07′09″W, 3–13 May 2005, leg. R. Andrade and Arnoni ( MZUSP 27547 View Materials ). GoogleMaps

Paratypes: One ♂, five ♀, same data as holotype ( MZUSP 24244 View Materials , 24245 View Materials , 24246 View Materials , 24247 View Materials , 24248 View Materials , 24249 View Materials ); one ♀, Pará, Canaã dos Carajás, Gruta Cris 11, 6°26′29″S 49°40′51″W, 29 June–6 July 2008, leg. R GoogleMaps . Andrade ( MZUSP 24256 View Materials ) .

Etymology

The new species is named after Dr Franco Ferrara, Florence, Italy, for his invaluable contribution to the knowledge of terrestrial isopods.

Description

Maximum length: ♂ and ♀, 5 mm. Colour brown. Dorsum covered with large tubercles, arranged as follows ( Fig. 37A,B View Figure 37 ): vertex of cephalon with three rows, an anterior row of six tubercles, a middle row of two tubercles, and a posterior row of six tubercles; pereonite 1 with an anterior row of four tubercles, a middle row of 12 tubercles, and a posterior row of eight tubercles; pereonites 2–7 with two rows of six tubercles; pleonites 3–5 with one row of four tubercles; telson with two paramedian tubercles. Dorsal surface with short triangular scale setae ( Fig. 37C View Figure 37 ). Pereonites 1–7 with one nodulus lateralis per side inserted on the lateral surface of the second outer tubercle ( Fig. 37A View Figure 37 ). Cephalon ( Fig. 37D–F View Figure 37 ) with frontal shield slightly protruding above vertex and concave in the middle; eye consisting of 14 ommatidia. Pereonite 1 grooved on lateral margin for about two-thirds of its length, inner lobe of schisma rounded, distinctly extending beyond posterior margin of outer lobe ( Fig. 37G View Figure 37 ). Pereonites 2–4 with triangular epimera, pereonites 5–7 with quadrangular epimera ( Fig. 37A View Figure 37 ). Pereonite 2 with a subtriangular ventral lobe distinctly extending beyond posterior margin of the epimeron ( Fig. 37G View Figure 37 ). Pereonites 6 and 7 ( Fig. 37I View Figure 37 ) grooved on ventral portion of epimerae. Telson ( Fig. 37H View Figure 37 ) hourglass-shaped, proximal part broader than distal part, and straight distal margin. Antennule ( Fig. 37J View Figure 37 ) of three articles with six long apical and two subapical aesthetascs. Antenna ( Fig. 37K View Figure 37 ) short and stout, slightly surpassing rear margin of cephalon; flagellum with second article about three times as long as the first. Mandibles ( Fig. 38A,B View Figure 38 ) with molar penicil consisting of several plumose setae; left mandibles with 2 + 1 and right mandible with 1 + 1 free penicils. Maxillule ( Fig. 38C View Figure 38 ) with outer branch bearing 4 + 6 simple teeth; inner branch with two long penicils and a small posterior point. Maxilla ( Fig. 38D View Figure 38 ) bilobate, with inner lobe distinctly narrower than outer lobe. Maxilliped ( Fig. 38E View Figure 38 ) endite with a subapical large seta overpassing the distal margin, and two triangular setae distally; palp with two setae on the basal article. Pleopods 1–5 with monospiracular respiratory structures ( Fig. 39D–H View Figure 39 ). Uropod ( Fig. 38F View Figure 38 ) protopod flattened and enlarged on basal part, distal part trapezoidal, with medial margin slightly concave; exopod very short, inserted dorsally near the medial margin of the protopod.

Male: Pereopod 1 and 7 ( Fig. 39A,B View Figure 39 ) with no particular modifications. Genital papilla as in Figure 39C View Figure 39 . Pleopod 1 ( Fig. 39D View Figure 39 ) exopod small, wider than long, with a triangular distal lobe and strongly concave distal margin; endopod with triangular distal part slightly bent outwards, bearing one row of small setae on the caudal surface near distal margin. Pleopod 2 ( Fig. 39E View Figure 39 ) exopod triangular, L-shaped, with outer margin strongly concave; endopod longer than exopod. Pleopods 3–5 as in Figure 39F–H View Figure 39 .

Remarks

At present Ctenorillo includes 12 species ( Schmalfuss, 2003): Ctenorillo ausseli Dollfus, 1893b ), from the Canary Islands; Ctenorillo bananae ( Van Name, 1920) , from Cameroon, Congo, and Angola; Ctenorillo buddelundi Verhoeff, 1942 , from Uganda and Kenya; Ctenorillo fagei ( Paulian de Félice, 1941) , from Ivory Coast; Ctenorillo gabunensis ( Schmalfuss & Ferrara, 1983) , from Gabon; Ctenorillo guinensis ( Schmalfuss & Ferrara, 1983) , from Guinea; Ctenorillo kenyensis Schmölzer, 1974 , from Uganda and Tanzania; Ctenorillo legai ( Arcangeli, 1941) , from Ethiopia; Ctenorillo parituberculatus ( Taiti & Ferrara, 1987) , from Malawi; Ctenorillo regulus ( Van Name, 1920) , from Zaire and Somalia; Ctenorillo strinatii ( Schmalfuss & Ferrara, 1983) , from Congo; and Ctenorillo mineri ( Van Name, 1936) , from Venezuela and Guyana. The best character to distinguish the species of Ctenorillo is the number and arrangement of dorsal tubercles. In having four tubercles on pleonites 3–5 and two on telson, C. ferrarai sp. nov. resembles C. fagei , C. gabunensis , C. guinensis , and C. mineri , from which it differs in the number and disposition of tubercles on the cephalon and pereon. In particular, it is recognized from the only other Neotropical species, C. mineri , by having 3 + 3 tubercles in the anterior and 3 + 3 tubercles in the posterior row on pereonites 2–7, instead of 5 + 5 tubercles in the anterior and 4 + 1 + 4 in the posterior row, and by the shape of the male pleopod 1 (compare Figure 39D View Figure 39 with figure 97A in Vandel, 1952b, for C. mineri ).