Chaimowiczia obybytyra, Cardoso 1 & Bastos-Pereira 1 & Ferreira 1, 2022

Cardoso 1, Giovanna Monticelli, Bastos-Pereira 1, Rafaela & Ferreira 1, Rodrigo Lopes, 2022, A new species of Chaimowiczia from the karstic Serra do Ramalho plateau, Brazil (Oniscidea, Synocheta, Styloniscidae), Subterranean Biology 42, pp. 139-149 : 139

publication ID	https://dx.doi.org/10.3897/subtbiol.42.80274
publication LSID	lsid:zoobank.org:pub:638C7911-552F-4027-8238-13848DA132BC
persistent identifier	https://treatment.plazi.org/id/E1EDC0BF-A3B5-48A7-B0D0-873DA3D7EC80
taxon LSID	lsid:zoobank.org:act:E1EDC0BF-A3B5-48A7-B0D0-873DA3D7EC80
treatment provided by	Subterranean Biology by Pensoft
scientific name	Chaimowiczia obybytyra
status	sp. nov.

Treatment

Chaimowiczia obybytyra View in CoL sp. nov.

Type species.

Chaimowiczia tatus Cardoso, Bastos-Pereira, Souza & Ferreira, 2021.

Material examined.

Holotype: Brazil • Male; Bahia state, municipality of Coribe, Serra Verde cave ; 13°43'26.03"S, 44°19'24.46"W; 20 Sep. 2021; G.M. Cardoso and R.L. Ferreira leg.; ISLA 95829 GoogleMaps . Paratypes: • 4 males; same data as for holotype; ISLA GoogleMaps 95830 • 17 females, same data as for holotype; ISLA GoogleMaps 95831.

Description.

Maximum length: 12 mm. Colorless, eyes absent (Figs 1A View Figure 1 , 6C, D View Figure 6 ). Dorsal surface smooth with sparse scale setae with short triangular base, long sensory sheathed hair and plaques with serrated distal margin (Fig. 1B View Figure 1 ). Cephalon (Fig. 1C, D View Figure 1 ) suprantennal line well defined, directed downwards and truncated in middle; round antennal lobes. Body (Figs 1A View Figure 1 , 2A View Figure 2 ) convex, pereonites 1-7 epimera quadrangular, widely separated and outwardly extended, pereonites postero-lateral corners progressively directed backwards; pleon epimera 3-5 well developed, pleonite 5 distal margin as long as telson. Telson (Fig. 1E View Figure 1 ) distal half subtriangular, depressed with round apex. Antennula (Fig. 2B View Figure 2 ) with three articles divided by thin suture, covered with thin setae, distal article with one lateral and two apical aesthetascs. Antenna (Figs 1F View Figure 1 , 2C View Figure 2 ) reaches pereonite 2 when extended backwards, fifth article of peduncle longer than flagellum; flagellum with three articles, first article longest. Mandibles as in Fig. 2D, E View Figure 2 . Maxillula (Fig. 2F View Figure 2 ) outer ramus with 5 + 5 teeth, apically entire, and two thick plumose stalks; inner ramus with three slender penicils. Maxilla (Fig. 2G View Figure 2 ) bilobate, inner lobe wider than outer, covered by setae. Maxilliped (Fig. 2H View Figure 2 ) basis trapezoidal, distal portion wider than basal; palp apex with tufts of setae; endite shorter than palp, setose, apex with one conic penicil between two strong teeth. Pereopod 1 (Figs 1G View Figure 1 , 3A View Figure 3 ) antennal grooming brush longitudinally on frontal face of carpus and propodus, dactylus with one claw; pereopod 7 with water conducting scale rows. Uropod (Fig. 1E View Figure 1 ) protopod surpasses distal margin of telson; exopod slightly longer than endopod, inserted at the same level, covered with pectinate scales.

Male. Pereopods 1, 6 and 7 (Figs 1G View Figure 1 , 3F View Figure 3 , 4A View Figure 4 ) covered with setae; merus sternal margin with proximal tuft of setae. Genital papilla triangular (Fig. 4B View Figure 4 ). Pleopod 1 (Fig. 4B View Figure 4 ) protopod trapezoid, sinuous margin, apex tapering; exopod covered with setae, triangular with sinuous external margin; endopod as long as exopod, flagelliform distal article. Pleopod 2 (Fig. 4C View Figure 4 ) exopod semi-oval, round distal margin, covered with setae; endopod of two articles, basal article quadrangular, shorter than exopod, distal article stout, apex with acute lobe (perpendicular) directed outwards. Pleopod 3 exopod (Fig. 4D View Figure 4 ) trapezoid, margin covered with thin setae, ventral face with lobe to hook pleopod 2. Pleopod 4 exopod (Fig. 4E View Figure 4 ) rhomboid, wider than long, covered with thin setae. Pleopod 5 exopod (Fig. 4F View Figure 4 ) ovoid, wider than long, covered with thin setae.

Etymology.

The epithet " obybytyra " was given in reference to the name of the cave Serra Verde (in English, Green Mountain), that in the local Indian language “tupi-guarani” means: oby = green and ybytyra = mountain.