Ischioscia herrerai López-Orozco, Carpio-Díaz & Campos-Filho, 2020

Campos-Filho, Ivanklin Soares, López-Orozco, Carlos Mario, Carpio-Díaz, Yesenia M., Águiar, José Otávio & Navas, Gabriel R., 2020, Three new species of Ischioscia Verhoeff, 1928 (Isopoda, Oniscidea, Philosciidae) from Serranía de Perijá, Andean Cordillera, Colombian Caribbean, Zoosystema 42 (8), pp. 115-130 : 116-120

publication ID	https://doi.org/ 10.5252/zoosystema2020v42a8
publication LSID	urn:lsid:zoobank.org:pub:B69957FC-A84A-49F5-9527-B1C9E2D138BB
DOI	https://doi.org/10.5281/zenodo.3729607
persistent identifier	https://treatment.plazi.org/id/BB652C32-9E11-FF82-99C4-2ECCFEF0FC10
treatment provided by	Felipe
scientific name	Ischioscia herrerai López-Orozco, Carpio-Díaz & Campos-Filho
status	sp. nov.

Treatment

Ischioscia herrerai López-Orozco, Carpio-Díaz & Campos-Filho View in CoL n. sp.

( Figs 1-3 View FIG View FIG View FIG )

urn:lsid:zoobank.org:act:84046969-EDD0-4A8E-8175-7C645A1BB873

TYPE MATERIAL. — Holotype. Colombia • ♂; Quebrada El Jordán, El Contento Village, San José de Oriente , La Paz , Cesar; 10°17’40.4”N, 72°55’52.1”W; 13.VIII.2015; Y. Herrera-Medina leg.; CUDC-CRU 33 . GoogleMaps

Paratypes. Colombia • 1 ♂ (part in micropreparations); same locality and date as for holotype; C. M. López-Orozco leg.; CUDC-CRU 45 • 1 ♀ (part in micropreparations); same locality and date as for holotype; C. M. López-Orozco leg.; CUDC-CRU 47 • 2 ♂, 3 ♀; same locality and date as for holotype; C. M. López-Orozco leg.; ICN-CI-86 • 12 ♂, 37 ♀; same locality and date as for holotype; C. M. López-Orozco leg.; CUDC-CRU-37 • 1 ♂, 13 ♀; Cerro Pintao, La Jagua del Pilar, La Guajira; 10°25’41.8”N, 72°56’8.3”W; 10.VIII.2015; C. M. López-Orozco leg.; CUDC-CRU-36 GoogleMaps .

ETYMOLOGY. — The new species is named after Yeison Herrera- Medina who collected part of the specimens used in this study.

DESCRIPTION

Maximum body size: male 9 mm × 3.5 mm (holotype); female 9.8 mm × 3.8 mm. Body as in Fig. 1A View FIG . Colour dark brown: antennal peduncle with first and second articles slightly pigmented, third to fifth articles and flagellum strongly pigmented; cephalon with irregular unpigmented spots; pereon with longitudinal unpigmented areas on paramedian region, pereonites 4-7 with one longitudinal unpigmented spot on median portion, epimera with two distinct unpigmented spots near posterior portions; pleon, telson and uropod exopods strongly pigmented ( Fig. 1A View FIG ). Dorsal surface bearing short triangular scale-setae ( Fig. 1B View FIG ). Cephalon ( Fig. 1C, D View FIG ) lateral lobes and frontal line absent, supraantennal line almost straight; vertex dorsoventrally flattened with prominent compound eyes on lateral protrusions; eyes with 27 ommatidia arranged in four rows. Pleon ( Fig. 1A View FIG ) narrower than pereon, neopleurae 3-5 well developed and directed backwards. Telson ( Fig. 1E View FIG ) with lateral margins concave, apex rounded. Antennula ( Fig. 1F View FIG ) of three articles, distal article bearing six superimposed aesthetascs plus apical pair. Antenna ( Fig. 1G View FIG ) when extended posteriorly reaching anterior portion of pereonite 3; flagellum of three articles subequal in length, apical organ very long. Mandibles with molar penicil composed of seven branches, left mandible ( Fig. 2A View FIG ) with 2+1 penicils, right mandible ( Fig. 2B View FIG ) with 1+1 penicils. Maxillula ( Fig. 2C View FIG ) inner endite with distal margin rounded bearing two hairy penicils; outer endite of 4+5 teeth, two of them with cleft apex. Maxilla ( Fig. 2D View FIG ) outer lobe almost three times as wide as inner lobe, distal margin rounded and covered with thin setae, one thick seta on inner portion; inner lobe rounded bearing thick setae. Maxilliped ( Fig. 2E View FIG ) basis rectangular bearing sparse setae; palp with two setae on proximal article; endite sub-rectangular, rostral and caudal surfaces hairy, medial seta not surpassing distal margin. Uropod ( Fig. 2F View FIG ) protopod and exopod grooved on lateral margin, exopod as long as endopod, endopod inserted proximally. Pereopods 1-7 long and slender; carpus 1 with antennal grooming brush transverse and distal setae apically cleft; dactylus of two claws, inner claw not surpassing outer claw, ungual seta long, dactylar seta apically plumose. Pleopod exopods without respiratory areas.

Male

Pereopods 1-3 with carpus enlarged, rostral portion bearing dense field of setae. Pereopod 1 and 2 propodus and pereopods 1-3 merus bearing dense field of setae on rostral and sternal portions ( Fig. 3A View FIG ). Pereopod 7 ( Fig. 3B View FIG ) ischium with rounded lobe bearing one strong seta on caudal surface, and distal sternal portion prominent. Genital papilla ( Fig. 3C View FIG ) truncated apically, triangular ventral shield and two apical orifices. Pleopod 1 ( Fig. 3D View FIG ) exopod cordiform, inner margin slightly sinuous, outer margin with distinct lateral incision, apical lobe triangular, directed outwards; endopod stout, almost twice as long as exopod, distal portion straight with row of small setae on medial portion, apex rounded with subapical lobe on outer margin. Pleopod 2 ( Fig. 3E View FIG ) exopod triangular, outer margin concave bearing several setae; endopod stout, longer than exopod, apex pointed. Pleopods 3 and 4 as in Fig. 3F and G View FIG , respectively. Pleopod 5 ( Fig. 3H View FIG ) exopod triangular, transverse rows of scales, outer margin straight bearing five setae.