Iansaoniscus iraquara Campos-Filho, Araujo & Taiti

Campos-Filho, Ivanklin Soares, Bichuette, Maria Elina, Montesanto, Giuseppe, Araujo, Paula Beatriz & Taiti, Stefano, 2017, The first troglobiotic species of the family Pudeoniscidae (Crustacea, Isopoda, Oniscidea), with descriptions of a new genus and two new species, Subterranean Biology 23, pp. 69-84 : 71-72

Iansaoniscus iraquara Campos-Filho, Araujo & Taiti sp. n. Figs 3, 4, 5

Type locality.

Bahia, Iraquara, Buraco do Cão cave (12°23'37.32"S, 41°36'8.28"W).

Type material.

Holotype male (MZUSP 27533), Bahia, Iraquara, Buraco do Cão cave, 20 July 2009, leg. ME Bichuette.

Description.

Body length: 6.5 mm. Body pigmentless, eyes absent. Body outline in lateral view as in Fig. 3A. Pereonite 1 epimeron without dorsolateral furrow; pereonite 1 and 2 with ventral triangular lobes (Fig. 3D); pereonite 3-7 with subquadrangular epimera. Cephalon as in Fig. 3B, C. Pleonites 3-5 with epimera subquadrangular and directed backwards (Fig. 3A, E). Telson (Fig. 3E) slightly wider than long with slightly concave sides, narrowly rounded apex. Antennula missing. Antenna (Fig. 3F) with flagellum as long as fifth article of peduncle. Mandibles (Fig. 4A, B) with molar penicil with 5-7 branches, left mandible with 2+1 penicils, right with 1+1 penicils. Maxillula (Fig. 4C) inner endite with distal margin rounded bearing two long penicils; outer endite of 4+5 teeth (two apically cleft). Maxilla (Fig. 4D) outer lobe twice as wide as inner lobe, rounded and covered with thin setae; inner lobe bearing thick setae. Maxilliped (Fig. 4E) basis rectangular; basal article of palp with two setae distinct in length; endite subrectangular, medial seta surpassing distal margin. Uropod (Fig. 5A) protopod with glandular pores on outer groove, exopod as long as endopod. Pereopod 1-7 (Fig. 5B, C) merus and carpus with slightly sparse setae on sternal margin; carpus 1 with antennal grooming brush transverse, distal seta apically with four points; dactylus with dactylar seta and ungual seta simple not surpassing outer claw. Genital papilla missing. Pleopod 1 (Fig. 5D) exopod ovoid, twice as wide as long; endopod almost three times as long as exopod, distal portion slightly bent outwards, inner margin bearing small setae. Pleopod 2 exopod (Fig. 5E) triangular bearing three setae on outer margin. Pleopod 3-5 exopods as in Fig. 5 F–H.

Etymology.

The new species is named after the Tupi language, spoken by the Brazilian native people, that inhabited the littoral zone. In Tupi, Iraquara means Honey Cave ( “Ira” = honey + “quara” = cave). Actually, the city of Iraquara is also known as the "City of the Caves".