Atlantoscia antennamaculata Zimmermann & Campos-Filho & Cardoso & Santos & Aguiar & Araujo 2018, sp. nov.
Creators: name: Zimmermann, Bianca Laís
name: Campos-Filho, Ivanklin Soares
name: Cardoso, Giovanna Monticelli
name: Santos, Sandro
name: Aguiar, José Otávio
name: Araujo, Paula Beatriz
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Isopoda
Philosciidae
Atlantoscia
Atlantoscia antennamaculata

description: Atlantoscia antennamaculata Campos-Filho, Cardoso & Araujo sp. nov.
Figs 1–3
Zoobank. urn:lsid:zoobank.org:act:06D14C40-4FD5-4948-9839-68F7B45CAE0D.
Etymology. Latin: antenna = antenna + maculata = spotted. The new species name refers to typical unpigmented spots along the antennae.
Material examined. Holotype: male (MZUSP 36766), Santa Catarina, Corupá, 26°24’08”S 49°20’40”W, 28 Jun 2012, leg. P.B. Araujo and B.L. Zimmermann. Paratypes: 2 males (one in micropreparations), 7 females (MZUSP 36767), same data as holotype.
Description. Maximum body length: male 6.5 mm, female 8.5 mm. Color brown; antennae strongly pigmented with unpigmented spots; cephalon and uropods with irregular unpigmented spots; pereon with unpigmented spots on median and paramedian region, pereonites 5–7 more pigmented, epimera more pigmented with one or two large unpigmented spots; pleonites 1–5 and telson with three unpigmented spots, pleonites 3–5 epimera with one unpigmented spot.
Body outline as in Fig. 1A. Cephalon with lateral lobes not developed, frontal line absent, suprantennal line bent downwards on middle. Dorsum covered with elongated triangular scale-setae (Fig. 1B). Pereon (Fig. 1A) with pereonite 1 epimera directed frontwards, not surpassing eyes; pereonites 5–7 epimera gradually directed backwards; pereonite 7 with posterior margin arched. Noduli laterales coordinates as in Fig. 1C and D. Pereonites with glandular pores on lateral margins (Fig. 1E). Pleon (Fig. 1A) narrower than pereon; pleonites 3–5 epimera not well-developed, directed backwards. Telson (Fig. 1F) triangular, lateral sides slightly concave, apex acute.
Antennula (Fig. 1G) of three articles, proximal and distal articles subequal in length, distal article bearing 12 lateral aesthetascs in about six rows plus apical pair. Antenna (Fig. 1H) reaching pereonite 4 when extend backwards; flagellum of three articles, medial and distal articles subequal in length, distal organ about one third of length of distal article of flagellum.
Mandibles with dense cushion of setae, molar penicil composed of five branches, left mandible (Fig. 2A) with 2+1 penicils, right mandible (Fig. 2B) with 1+1 penicils. Maxillula (Fig. 2C) inner endite with distal margin rounded bearing two hairy penicils; outer endite of 4+6 teeth, five of them cleft at apex. Maxilla (Fig. 2D) inner lobe rounded covered with thick setae; outer lobe three times as wide as inner lobe, distal margin sinuous covered with thin setae. Maxilliped (Fig. 2E) basis subrectangular, palp with two distinct setae on proximal article, endite with distal margin rounded bearing two hook-like setae.
Pereopods (Fig. 3B, C) rather slender bearing fringe of scales on merus and carpus; carpus 1 with transverse antennal grooming brush and distal seta double fringed at apex. Dactylus (Fig. 3B) of two claws, inner claw not surpassing outer claw; ungual seta and dactylar organ simple, not surpassing outer claw.
Uropod (Fig. 3A) protopod subrectangular, protopod and exopod grooved on outer margin bearing many glandular pores; exopod about twice as long as endopod; endopod inserted proximally.
Respiratory areas of floridana -type on pleopod exopods.
Male. Genital papilla (Fig. 3D) with triangular ventral shield, distal papilla bearing two subapical orifices. Pleopod 1 (Fig. 3D) exopod heart-shaped, outer margin concave, distal portion triangular, elongated and directed outwards; endopod longer than exopod, distal portion bent outwards bearing small setae on medial margin and serrate plaque. Pleopod 2 (Fig. 3E) exopod triangular, outer margin concave bearing seven small setae; endopod slightly longer than endopod. Pleopod 3 exopod (Fig. 3F) triangular, outer margin concave bearing eight small setae. Pleopod 4 exopod (Fig. 3G) rhomboid, distal margin almost straight bearing eight setae. Pleopod 5 exopod (Fig. 3H) rhomboid, outer margin sinuous bearing three setae, distal margin bearing one seta.
Remarks. In the shape of male pleopod 1 exopod Atlantoscia antennamaculata sp. nov. resembles A. sulcata, but it differs in the shape of telson, absence of ventral sulcus on pereopod 7 (present in A. sulcata), and dactylar organ simple (vs. arrow-like in A. sulcata). In addition, the new species differs from the congeners in having unpigmented spots along the antennae.
description: Published as part of Zimmermann, Bianca Laís, Campos-Filho, Ivanklin Soares, Cardoso, Giovanna Monticelli, Santos, Sandro, Aguiar, José Otávio & Araujo, Paula Beatriz, 2018, Two new species of Atlantoscia Ferrara & Taiti, 1981 (Isopoda: Oniscidea: Philosciidae) from southern Brazil described in the light of integrative taxonomy, pp. 551-565 in Zootaxa 4482 (3) on pages 553-555, DOI: 10.11646/zootaxa.4482.3.7, http://zenodo.org/record/1440803