Tylos negroi López-Orozco, Carpio-Díaz & Campos-Filho, 2022

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, European Journal of Taxonomy 793, pp. 1-50 : 11-13

publication ID	https://doi.org/ 10.5852/ejt.2022.793.1643
publication LSID	lsid:zoobank.org:pub:E9F1E40A-E78B-48C4-A077-124D01696B5E
DOI	https://doi.org/10.5281/zenodo.6309054
persistent identifier	https://treatment.plazi.org/id/312287F0-B70B-0E10-8A86-E337FBAC4F58
treatment provided by	Felipe
scientific name	Tylos negroi López-Orozco, Carpio-Díaz & Campos-Filho
status	sp. nov.

Treatment

Tylos negroi López-Orozco, Carpio-Díaz & Campos-Filho View in CoL sp. nov.

urn:lsid:zoobank.org:act:DFCDBD2C-AEBD-4754-951A-1D927E81E6DC

Figs 1 View Fig , 2B View Fig , 3–5 View Fig View Fig View Fig

Etymology

The new species is named after Mr Hernando Gómez Molina, also known as Mr Negro, for his efforts to conserve the biodiversity of the Rosario Islands.

Material examined

Holotype COLOMBIA – Bolívar , Cartagena de Indias , Islas del Rosario , Isla Grande • ♂; Playa Libre ; 10°10′52.3″ N, 75°43′54.8″ W; 5 Oct. 2017; C.M. López-Orozco, R. Borja-Arrieta and Y.M. Carpio- Díaz leg.; CUDC-CRU 127 . GoogleMaps

Paratypes COLOMBIA – Bolívar, Cartagena de Indias , Islas del Rosario , Isla Grande • 1 ♂ (parts in micropreparations); same collection data as for holotype; CUDC-CRU 128 GoogleMaps • 2 ♀♀ (parts in micropreparations); same collection data as for holotype; CUDC-CRU 129 GoogleMaps • many ♂♂ and ♀♀; same collection data as for holotype; CUDC-CRU 130 GoogleMaps • 7 ♂♂, 13 ♀♀; El Silencio , Playa La Cocotera ; 10°10′49.3″ N, 75°44′16.7″ W; 6 Oct. 2017; same collectors as for holotype; CUDC-CRU 131 GoogleMaps • 8 ♂♂, 10 ♀♀; La Punta , El Terminal ; 10°10′55.75″ N, 75°43′36.57″ W; same collectors as for holotype; CUDC-CRU 132 GoogleMaps • 5 ♀♀; Playa Libre ; 10°10′52.3″ N, 75°43′55.7″ W; 7 Sep. 2017; same collectors as for holotype; CUDC-CRU 133 GoogleMaps • 1 ♀; same collection data as for holotype; CUDC-CRU 134 GoogleMaps • 4 ♂♂, 3 ♀♀; same collection data as for holotype; 5 Oct. 2017; ICN-CR-is 262 GoogleMaps • 1 ♂; La Punta , Hotel Cocoliso ; 10°10′42.19″ N, 75°43′32.88″ W; 6 Oct. 2017; same collectors as for holotype; CUDC-CRU 135 GoogleMaps .

Description

MEASUREMENTS. Maximum body length: male 10 mm; female 8.1 mm.

BODY. Colour yellowish with many irregular dark spots ( Fig. 2B View Fig ). Body outline as in Fig. 3A View Fig . Endoantennal conglobation. Dorsum covered with lanceolate scale-setae ( Fig. 3B View Fig ).

CEPHALON. Frontal lamina triangular ( Fig. 3C–D View Fig ); eyes consisting of 26–27 ommatidia.

PEREON. Pereonite 1 epimera grooved on lateral margins, schisma with inner lobe triangular, slightly surpassing outer lobe ( Fig. 3E View Fig ); pereonite 2 with ventral lobe triangular, shorter than outer lobe ( Fig. 3E View Fig ); epimera of pereonites 2–4 subtriangular, 5–7 subquadrangular ( Fig. 3A View Fig ).

PLEON. Epimera of pleonites 3–5 with rounded distal margin ( Fig. 3F View Fig ). Ventral phylacomera present on pleonites 3–5; phylacomera 5 oar-shaped, with wide distal part, medial margin oblique and slightly sinuous ( Fig. 3G View Fig ). Telson rectangular, posterior margin slightly folded upwards ( Fig. 3F View Fig ).

ANTENNULA. Composed of one article, flattened and triangular, several aesthetascs inserted on slightly rounded lobe ( Fig. 3H View Fig ).

ANTENNA. Short and thickset, flagellum of three articles, apical article as long as first and second articles ( Fig. 4A View Fig ).

MOUTH. Mandibles with strong molar process, left mandible ( Fig 4B View Fig ) with two penicils on molar process, two on hairy lobe and five free penicils; right mandible ( Fig. 4C View Fig ) with two penicils on molar process, one on hairy lobe and five free penicils. Maxillula ( Fig. 4D View Fig ) inner endite with three long penicils densely covered with thin setae, apical penicil longest; outer endite composed of 5+5 simple teeth plus one sensory seta, inner set bearing two teeth slightly serrate, median portion bearing three short setae. Maxilla ( Fig. 4E View Fig ) of two lobes, inner lobe rounded, covered with thick setae, outer lobe covered with thin setae. Maxilliped ( Fig. 4F View Fig ) basis with rounded outer margin, palp proximal article triangular without setae; endite rectangular, bearing five apical and two subapical penicils.

UROPOD. As in Fig 3G. View Fig

PEREOPODS. Pereopod 1 ( Fig. 5A View Fig ) basis with triangular latero-apical process. Pereopod 7 ( Fig. 5B View Fig ) propodus slightly inflated; dactylus of one claw, dactylar seta stout, not surpassing claw and bearing several small sensory setae on median to apical portion.

Male

PEREOPODS 1 AND 7. Without any sexual dimorphism ( Fig. 5A–B View Fig ).

PLEOPODS. Pleopod 2 exopod rectangular ( Fig. 5C View Fig ) with respiratory folds; endopod with distal portion slightly directed inwards, apex covered with cleft scales of 2–4 branches ( Fig. 5C View Fig ).

Remarks

Presently, the genus Tylos has a worldwide distribution and comprises 21 coastal species ( Schmalfuss & Vergara 2000; Schmalfuss 2003). In Colombia, only T. niveus Budde-Lund, 1885 was recorded from the Caribbean region ( Carpio-Díaz et al. 2016). Tylos negroi sp. nov. can be distinguished from all species of the genus by the shape of the ventral phylacomera 5. Moreover, it differs from T. niveus in the pereonite 1 epimeron having the inner lobe of the schisma surpassing the outer lobe (vs inner lobe not surpassing outer lobe) and the pereopod 7 propodus being inflated (vs not inflated).

Distribution

Presently known only from Isla Grande, Cartagena de Indias, Colombia.