Halophiloscia trichoniscoides López-Orozco & Carpio-Díaz & Borja-Arrieta & Navas-S & Campos-Filho & Taiti & Mateos & Olazaran & Caballero & Jotty & Gómez-Estrada & Hurtado 2022, comb. nov.
Creators: name: López-Orozco, Carlos Mario
name: Carpio-Díaz, Yesenia M.
name: Borja-Arrieta, Ricardo
name: Navas-S, Gabriel R.
name: Campos-Filho, Ivanklin Soares
name: Taiti, Stefano
name: Mateos, Mariana
name: Olazaran, Alexandra
name: Caballero, Isabel C.
name: Jotty, Karick
name: Gómez-Estrada, Harold
name: Hurtado, Luis A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Isopoda
Halophilosciidae
Halophiloscia
Halophiloscia trichoniscoides

description: Halophiloscia trichoniscoides (Vandel, 1973) comb. nov.
Figs 1, 2G, 15–17
Microphiloscia trichoniscoides Vandel, 1973: 170, figs 19–21.
Material examined
COLOMBIA – Bolívar, Cartagena de Indias, Islas del Rosario, Isla Grande • 3 ♂♂; Paraíso Secreto; 10°10′15.9″ N, 75°44′38.8″ W; 4 Apr. 2018; C.M. López-Orozco, R. Borja-Arrieta and K. Meza leg.; CUDC-CRU 218, 220, 221 • 1 ♂, 1 ♀ (parts in micropreparations); same locality as for preceding; 6 Sep. 2017; C.M. López-Orozco, Y.M. Carpio-Díaz and R. Borja-Arrieta leg.; CUDC-CRU 219.
CUBA – Matanzas, Bahia de Conchinos • 4 ♂♂, 10 ♀♀; near Cueva de los Peces, between Playa Larga and Playa Giron; 10 Apr. 2002; S. Taiti leg.; MZUF 9607. – Pinar del Rio • 2 ♂♂, 3 ♀♀; Penisula Guanahacabibes, La Bajada; 7 Apr. 2002; S. Taiti leg.; MZUF 9608.
Redescription
MEASUREMENTS. Maximum body length: male 2.8 mm and female 4 mm.
BODY. Color light brown (Fig. 2G), mottled with the usual pale muscle spots; posterior margins of pereonites 4–7, pleonites 3–5 and uropod branches more pigmented. Body outline as in Fig. 15A. Back smooth with numerous triangular scale-setae (Fig. 15B). One line of noduli laterales per side on the pereonites inserted at same distance from lateral margins (Fig. 15A, C).
CEPHALON. Without frontal line, suprantennal line straight on median portion; eyes consisting of 10 ommatidia (Fig. 15D–E).
PLEON. Narrower than pereon; epimera of pleonites 3–5 not developed. Telson with lateral sides slightly concave, distal margin broadly rounded (Fig. 15A).
ANTENNULA. Composed of three articles subequal in length, distal article with two lateral aesthetascs plus apical pair (Fig. 15F).
ANTENNA. When extended posteriorly reaches posterior margin of pereonite 5; flagellum as long as fifth article of peduncle, first article slightly longer than second and third, second and third articles with three and two lateral aesthetascs, respectively (Fig. 15G).
MOUTH. Mandibles with molar penicil consisting of at least five branches, left mandible with 2+1 penicils (Fig. 16A), right mandible with 1+1 penicils (Fig. 16B). Maxillula (Fig. 16C) inner endite with two long penicils inserted transversely; outer endite of 5+5 teeth, inner set apically cleft. Maxilla (Fig. 16D) with bilobate apex, inner lobe rounded, bearing thick setae, outer lobe rounded, covered with thin setae plus three thick setae. Maxilliped (Fig. 16E) base bearing sparse setae, proximal article of palp with two stout setae slightly distinct in length; endite subrectangular, inner and distal margins bearing several thin setae, medial seta not surpassing distal margin, distal margin with one small hairy penicil.
UROPOD. Protopod and exopod grooved on outer margin, bearing many glandular pores, exopod almost three times as long as endopod (Fig. 16F).
PEREOPODS. Rather slender, pereopod 1 carpus bearing transverse antennal grooming brush and distal seta apically cleft; dactylus with ungual seta simple and surpassing outer claw, dactylar seta simple, not surpassing outer claw.
Male
PEREOPODS 1 AND 7. Pereopod 1 (Fig. 17A) propodus slightly flattened, carpus with transverse antennal grooming brush and distal seta hand-like. Pereopod 7 (Fig. 17B) without any sexual dimorphism.
GENITAL PAPILLA. Ventral shield ovoid, papilla bifurcate with genital orifices opening at apex (Fig. 17C).
PLEOPODS. Pleopod 1 (Fig. 17D) exopod triangular, inner margin almost straight, outer margin sinuous, distal portion triangular with distal margin rounded; endopod with thickest distal part with sides almost parallel, inner distal part with long pointed process concave on outer margin, prominent subquadrangular apical lobe on outer distal portion bearing thin setae. Pleopod 2 (Fig. 17E) exopod triangular, outer margin concave, bearing seven stout setae; endopod robust, distinctly longer than exopod. Exopods of pleopods 3–5 as in Fig. 17F–H.
Remarks
Vandel (1973) erected the genus Microphiloscia to allocate the new species M. trichoniscoides from Cueva de la Colorada, Provincia de Oriente, Sierra Maestra, Colorada del Maso, Cuba. After the examination of material belonging to this species, M. trichoniscoides shows the shape of the genital papilla and male pleopod 1 endopod typical of members of Halophiloscia (see also Taiti & Lopez 2008). Halophiloscia includes 9 halophilic species mainly distributed along the Mediterranean and Atlantic coasts of Europe and Africa (Schmalfuss 2003; Taiti & Lopez 2008; Taiti & Argano 2009, 2011). In America, only H. couchii (Kinahan, 1858) was recorded, from Argentina, Bermuda, and USA (see Schmidt 2003). The genus is mainly characterized by the runner-type habitus (sensu Schmalfuss 1984), epimera of pereonites 1–7 with one or more lines of noduli laterales, male pereopod 1 and sometimes pereopod 2 carpus and propodus enlarged and covered with several scales on frontal side, male genital papilla distally bifurcated, and male pleopod 1 endopod stout bearing a long, pointed process on the apex (see Schmidt 2003; Taiti & Lopez 2008). The species is included within the genus since it shows all the previously mentioned characters, except that the male pereopods 1 and 2 do not have the carpus and propodus enlarged. Thus, Microphiloscia is considered to be a junior synonym of Halophiloscia.
Distribution
Cuba (Vandel 1973). First record for Colombia.
description: Published as part of López-Orozco, Carlos Mario, Carpio-Díaz, Yesenia M., Borja-Arrieta, Ricardo, Navas-S, Gabriel R., Campos-Filho, Ivanklin Soares, Taiti, Stefano, Mateos, Mariana, Olazaran, Alexandra, Caballero, Isabel C., Jotty, Karick, Gómez-Estrada, Harold & Hurtado, Luis A., 2022, A glimpse into a remarkable unknown diversity of oniscideans along the Caribbean coasts revealed on a tiny island, pp. 1-50 in European Journal of Taxonomy 793 on pages 29-32, DOI: 10.5852/ejt.2022.793.1643, http://zenodo.org/record/6037892