Novamundoniscus altamiraensis, 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 : 397

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-FF84-FFA0-03FD-CFD1FD0D4833
treatment provided by	Marcus
scientific name	Novamundoniscus altamiraensis
status	SP. NOV.

Treatment

NOVAMUNDONISCUS ALTAMIRAENSIS CAMPOS- FILHO, ARAUJO & TAITI SP. NOV.

FIGURES 26–28 View Figure 26 View Figure 27 View Figure 28 , 40 View Figure 40

Type material

Holotype: ♂, Brazil, Pará, Altamira, Abrigos Assurini , 3°15′02″S, 52°12′31″W, 15 December 2010, leg. M.E. Bichuette and J.E. Gallão ( MZUSP 27536 View Materials ). GoogleMaps

Paratypes: One ♂ (in micropreparations), one ♀, same data as holotype ( MZUSP 27537 View Materials ); one ♂, Canaã dos Parauapebas, FLONA GoogleMaps Carajás, 06°04′51″S, 50°09′31″W, 14 March–4 April 2010, leg. R GoogleMaps . Andrade ( UFRGS 5607 View Materials P) .

Etymology

The new species is named after the locality where the specimens were collected: Altamira, Pará.

Description

Maximum length: ♂, 2.4 mm; ♀, 2.6 mm. Body outline as in Figure 26A View Figure 26 . Colour brown, antennae and uropods completely pigmented, cephalon with irregular pale muscle spots, pereonites with a median pale area, more evident on pereonites 1–4, pleon pigmented, pleonite 2 with pale spots on lateral portions. One line of noduli laterales inserted more or less at the same distance from the lateral margins of pereonites, b/c and d/c coordinates as in Figure 26B View Figure 26 ; dorsum covered with fanshaped scale setae ( Fig. 26F View Figure 26 ); gland pores not visible. Cephalon ( Fig. 26C,D View Figure 26 ) with short frontal lobes and lacking frontal line, suprantennal line slightly sinuous; eye with 11 ommatidia. Pleonites 3–5 with welldeveloped epimera, directed backwards. Telson ( Fig. 26E View Figure 26 ) more than twice as wide as long, with triangular distal part, concave sides and rounded apex. Antennule ( Fig. 26G View Figure 26 ) of three articles, third article with two rows of two and three aesthetascs each, and an apical pair. Antenna ( Fig. 26H View Figure 26 ) reaching rear margin of pereonite 3; flagellum about as long as fifth article of peduncle; flagellum of three articles with distal article longer than first and second articles, second article bearing one row of two aesthetascs and third article bearing two rows of two aesthetascs, apical organ short, free sensilla as long as apical organ. Mandibles ( Fig. 27A,B View Figure 27 ) with molar penicil consisting of five or six setae, and 2 + 1 free penicils on the left mandible and 1 + 1 on right mandible. Maxillule ( Fig. 27C View Figure 27 ) outer branch with 4 + 5 (four cleft) teeth; inner branch with two short penicils inserted transversely and distal margin rounded. Maxilla ( Fig. 27D View Figure 27 ) with setose and bilobate apex; outer lobe about twice as wide as medial lobe, with distal margin rounded. Maxilliped ( Fig. 27E View Figure 27 ) basis rectangular, with sparse scale setae; endite with distal margin curved, one stout seta, and no penicil. Pereopods with inner claw of dactylus as long as outer claw, ungual seta reaching tip of outer claw, and simple apex, and dactylar seta reaching median portion of outer claw and simple apex ( Fig. 27G View Figure 27 ). Uropod ( Fig. 27F View Figure 27 ) protopod grooved on outer margin; exopod distinctly longer than endopod; insertion of endopod proximal to that of exopod.

Male: Pereopod 7 ( Fig. 28A View Figure 28 ) with fringe of hyaline scales on distal margins of ischium and merus, ischium with sternal margin straight. Genital papilla as in Figure 28B View Figure 28 . Pleopod 1 ( Fig. 28C View Figure 28 ) exopod subrectangular, with distal margin straight; endopod with tapering distal part slightly swollen subapically, and bearing minute setae. Pleopod 2 ( Fig. 28D View Figure 28 ) exopod triangular, outer margin concave, bearing three strong setae; endopod slightly longer than exopod. Pleopods 3–5 as in Figure 28E–G View Figure 28 .

Remarks

Novamundoniscus altamiraensis sp. nov. is readily distinguishable from the other Brazilian species Novamundoniscus dissimilis ( Lemos de Castro, 1960) View in CoL , Novamundoniscus macrophthalmus ( Lemos de Castro, 1960) View in CoL , Novamundoniscus singularis ( Lemos de Castro, 1967) View in CoL , Novamundoniscus vandeli ( Lemos de Castro, 1960) View in CoL , and Novamundoniscus gracilis Lopes & Araujo, 2003 View in CoL , by the shape of male pleopod 1 and pleopod 2 endopod. It also differs from N. dissimilis View in CoL , N. singularis View in CoL , N. vandeli View in CoL , and N. gracilis View in CoL in the number of ommatidia ( N. dissimilis View in CoL = 7; N. singularis View in CoL and N. gracilis View in CoL = 15; N. vandeli View in CoL = 8; N. altamiraensis Campos-Filho, Araujo & Taiti sp. nov. = 11). The new species differs from the Venezuelan species Novamundoniscus marcuzzii ( Vandel, 1952b) View in CoL and Novamundoniscus persimilis ( Vandel, 1952b) View in CoL in the telson with rounded instead of pointed apex.