Atopobathynella pervulgata Perina & Camacho, 2025
publication ID |
https://doi.org/10.11646/zootaxa.5655.1.1 |
publication LSID |
lsid:zoobank.org:pub:4411E6C2-D4C5-4340-AF6B-FDDBB0F7E1A1 |
persistent identifier |
https://treatment.plazi.org/id/0399C326-FF95-FFE6-53BB-039AFCFEFDD3 |
treatment provided by |
Plazi |
scientific name |
Atopobathynella pervulgata Perina & Camacho |
status |
sp. nov. |
Atopobathynella pervulgata Perina & Camacho , sp. nov.
urn:lsid:zoobank.org:act:BCD6972F-30DC-486F-BC8B-A619EE5963BC
( Figs. 18–19 View FIGURE 18 View FIGURE 19 )
Material examined. Holotype male. AUSTRALIA: Western Australia: Rhodes Ridge, Pilbara , karaman RRWON54 , 23°7'11.2152"S, 119°4'43.0422"E, 12 February 2021, P. Runham, A. Mittra ( WAMC 82071 — BES10623 — BMR03982 View Materials , permanent slide). GoogleMaps
Paratypes: AUSTRALIA: Western Australia: 1 female ( WAMC 82073 — BES11526 b, permanent slide) and 1 male ( WAMC 82074 — BES11526 c, permanent slide), same detail as holotype ; 1 female, Rhodes Ridge, Pilbara , karaman RRWONKC050, 23°5'2.6586"S, 119°9'20.3436"E, 7 February 2021, P. Runham, A. Mittra ( WAMC 82066 — BES10831 — BMR03989 View Materials , permanent slide) GoogleMaps ; 1 female, Rhodes Ridge, Pilbara , karaman RRWONKC051, 23°05'20.8400"S, 119°08'12.8958"E, 9 February 2021, P. Runham, A. Mittra ( WAMC 82068 — BES10703 — BMR04001 View Materials , permanent slide) GoogleMaps ; 1 male ( WAMC 82070 — BES11621 a, permanent slide), details as above ; 1 male, Gudai Darri, Pilbara, Bore MB19 K58W0001, 22°31'52.1862"S, 119°0'20.0772"E, 10 June 2021, C. Norris, F. Rudin, ( WAMC 76664 — BES12768 — BMR03941 View Materials , permanent slide) GoogleMaps ; 1 female ( WAMC 76677 — BES10454 — BMR03369 View Materials , permanent slide) details as above ; 1 male Gudai Darri, Pilbara, Bore 200NB13768, 22°30'45.5004"S, 119°1'16.9422"E, 10 June 2021, S. Paget, J. Huey, ( WAMC 76679 — BES11525 — BMR02766 View Materials , permanent slide) GoogleMaps ; 1 female Gudai Darri, Pilbara, Bore MB21 G101W0002, 22°28'18.1272"S, 118°53'57.0978"E, 17 September 2022, F. Rudin, A. Umbrello, ( WAMC 78944 — BES17446 — BMR05155 View Materials , permanent slide GoogleMaps ; 1 male West Angelas, Pilbara , bore at 23°08`31.01"S, 118°39`17.67"E, 21 March 2016, S. Callan, E.S. Volschenk, ( WAMC 78973 , permanent slide) GoogleMaps ; 1 female ( WAMC 78974 , permanent slide), same detail as above ; 1 male West Angelas, Pilbara , bore at 23°08`31.53"S, 118°38`47.74"E, 16 March 2016, S. Callan, E.S. Volschenk, ( WAMC 78976 , permanent slide) GoogleMaps ; 1 male ( WAMC 78977 , permanent slide) same detail as above ; 1 female Yandi Creek, Pilbara , karaman at 22°47'S, 119°9'E, 20 April 2022, A. Riemer, I. Johansson, ( WAMC 82076 — BES15605 — BMR05460 View Materials , permanent slide) GoogleMaps ; 1 female, Yandi Creek, Pilbara , karaman at 22°43'S, 118°57'E, 11 September 2022, J. Delaney, S. Rodman, C. Wilkins, ( WAMC 82078 — BES22638 a, permanent slide) GoogleMaps ; 1 male ( WAMC 82079 — BES22638 b, permanent slide), same details as above .
Additional material: AUSTRALIA: Western Australia: 49 specimens in alcohol, West Angelas, Pilbara , bore at 23°08`31.01"S, 118°39`17.67"E, 21March 2016, S. Callan, E.S.Volschenk, ( WAMC 70169 ) GoogleMaps ; 91 specimens in alcohol, West Angelas, Pilbara , bore at 23°08`31.53"S, 118°38`47.74"E, 16 March 2016, S. Callan, E.S. Volschenk, ( WAMC 70170 ) GoogleMaps ; 1 juvenile in alcohol, Rhodes Ridge, Pilbara , karaman RRWONKC050, 23°5'2.6586"S, 119°9'20.3436"E, 7 February 2021, P. Runham, A. Mittra ( WAMC 82067 — BES11534 ) GoogleMaps ; 3 juveniles, 1 female in alcohol, Rhodes Ridge, Pilbara , karaman RRWONKC051, 23°05'20.8400"S, 119°08'12.8958"E, 9 February 2021, P. Runham, A. Mittra ( WAMC 82069 — BES11621 ) GoogleMaps ; 56 specimens in alcohol, ( WAMC 82072 — BES11526 ), same detail as holotype ; 1 juvenile in alcohol, Rhodes Ridge, Pilbara , karaman RRGINKARA01, 23°09'45.7424"S, 119°01'04.0861"E, 9 February 2021, P. Runham, A. Mittra ( WAMC 82075 — BES12774 — BMR03955 View Materials ) GoogleMaps ; 1 female in alcohol, Yandi Creek , karaman at 22°43'S, 118°56'E, 1 April 2023, J. Delaney, K. Nguyen, S. Paget ( WAMC 82077 — BES19803 — BMR08587 View Materials ) GoogleMaps ; 1 male, 5 female, 5 juveniles in alcohol, Yandi Creek, Pilbara , karaman at 22°43'S, 118°57'E, 11 September 2022, J. Delaney, S. Rodman, C. Wilkins, ( WAMC 82080 — BES22638 ) GoogleMaps .
Diagnosis. Atopobathynella pervulgata sp. nov. belongs to a group of Atopobathynella species that have antennal organ (AO) without protuberance, with one long and strong seta that reaches over half of the length of article four; distal endite of maxillula with five claws; sympod of the uropod with inhomonomous spines; exopod of the uropod with two distal setae. It differs from the rest of Atopobathynella species by the presence of only six pairs of thoracopods. The sequenced specimens differ from all the other Atopobathynella species sequenced by COI = 11.2–20.5% and 12S = 11.4–37.2% (Appendices 3, 4). The COI intraspecific variation ranges between 0– 7.9% (Supplementary Material Table S1), with average 5.1% (Appendix 2). The 12S intraspecific variation ranges between 0–7.5% (Supplementary Material Table S2), with average 4.2% (Appendix 3).
Description male holotype (WAMC82071). Body length of 0.9 mm. Body about nine times as long as maximum width, elongated, almost cylindrical, segments slightly widening and lengthening towards posterior end of the body.
Antennula ( Fig. 18A View FIGURE 18 ): six-segmented. Articles wide, gradually shortening and thinning from article one to six, with article six half as wide as the first two. Antennal organ represented by one long and thick ventral seta which reaches half the length of article four. Inner flagellum small with three setae. Ventral seta present in article two and three. Plumose seta present on the inner distal end of article four, in addition to the two typical outer plumose setae on protuberances on the outer corner of article four, one short and one extending beyond the distal end of the fifth article. Articles five and six with three terminal aesthetascs each, one slightly longer on article five, and two long and one shorter on article six. Antennular setation as in Fig. 18A View FIGURE 18 .
Antenna ( Fig. 18B View FIGURE 18 ): one-segmented with four setae, two terminal and one subterminal smooth, and one terminal plumose seta.
Labrum ( Fig. 18C View FIGURE 18 ): slightly concave, free edge with 16 teeth, seven long teeth on each side, and two central small triangular ones.
Paragnaths: absent.
Mandible ( Fig. 18D View FIGURE 18 ): pars incisiva with three teeth; pars molaris with five claws, the most distal one slightly modified and separated from the rest, the two most proximal claws joined together; tooth on ventral edge very small. Mandibular palp with one distal seta that reaches the distal end of the pars molaris.
Maxillula ( Fig. 18E View FIGURE 18 ): proximal endite with four unequal claws, two thick with denticles and two thinner; distal endite with five claws, two distal ones smooth, three proximal ones with some spines; three smooth subterminal setae on the outer distal margin.
Maxilla ( Fig. 18F View FIGURE 18 ): four-segmented, setal formula 2, 4, 12, 1.
Thoracopods I to VI ( Figs. 18G View FIGURE 18 and 19A–E View FIGURE 19 ): length slightly increasing from thoracopod one to four, the last two thoracopods similar in length. Epipod present in ThII to VI, with length about half the corresponding basipod. All basipods with one distolateral seta slightly shorter than the first article of the endopod (except in ThI ). Exopod one-segmented in all thoracopods; exopod of ThI ( Fig. 18G View FIGURE 18 ) and II ( Fig. 19A View FIGURE 19 ) reaching the distal end of the second article of the endopod; exopod of ThIII to VI ( Fig. 19B–E View FIGURE 19 ) slightly longer than the first two articles of the endopod. Exopod of all thoracopods bearing three setae, two terminal ones of different length, with the outer smooth seta half of the length of the barbed subterminal seta, barbed inner seta not reaching the distal end of the claws of the endopod in ThI , while it extends beyond the distal claw of the endopod, progressively increasing in length from ThII to VI. Endopod four-segmented, first article short, half the length of the second and third article, with one seta on thoracopod I, and no seta on the rest of thoracopods; second and third articles long, second article slightly longer than the third one in all thoracopods; second article with one outer plumose seta in all thoracopods and two smooth inner setae on ThI only; third article with one inner seta on ThI and one small outer seta on the rest of thoracopods; fourth article very reduced with two strong claws of different length on ThI and only one long strong claw on ThII to VI. Setal formula of endopods as follow:
ThI 1+0/2+1/1+0/2
ThII to VI 0+0/0+1/0+1/1
Thoracopod VIII ( Figs. 18H View FIGURE 18 ): compact, like a balloon. Penial region with massive protopod, outer lobe oval shape, reaching the distal end of basipod, well defined at base in latero-external view. Inner lobe small, finger shape. Dentate lobe with seven teeth. Basipod without delimited base, with a projection and a seta of uncertain origin.
Pleopod I ( Fig. 19H View FIGURE 19 ): one smooth seta on each side.
Uropod ( Fig. 19F View FIGURE 19 ): sympod about 3 times as long as wide, about 3.5 times the length of the exopod and about six times the length of endopod, with six uneven spines, increasing in length from the proximal to the distal spine and occupying two thirds of the sympod. Exopod with two very long barbed terminal setae of similar length, and one basal plumose seta as long as exopod. Endopod distally drawn out into a very long dagger-shaped structure longer than the exopod, with distolateral angle bearing two setae, one outer barbed a third longer than the plumose inner one and almost twice the length of the dagger-shaped structure.
Pleotelson ( Fig. 19G View FIGURE 19 ): anal operculum not protruded, short lateral seta.
Furca ( Fig. 19G View FIGURE 19 ): rami robust and almost square, with four barbed spines, three distal ones of similar length and the basal one two thirds of the others. Two dorsal plumose setae, inner seta very short, and the outer seta more than twice the length of the distal spines.
Female paratype differs from male in the second antennular segment ( Fig. 18I View FIGURE 18 ) that bears no antennal organ, and ThVIII, which is very small and tooth/denticle shaped ( Fig. 18J View FIGURE 18 ).
Variability. Variability was observed in body size (males 0.78–1.1 mm and females 0.6–1.07 mm); number of teeth on labrum (16–22); number of setae on exopod of the ThI (2 or 3) and number of setae on exopod of the ThV– VI (2 or 3); number of inner setae on the second article of ThI (1 or 2); length of setae on distolateral angle of the endopod of the uropod (2 short, 2 long, 1 long and 1 short); and number of spines on sympod of uropod (5–11). One specimen (WAMC 76679) has endopod and exopod of uropod deformed (see Supplementary Material Fig. S2 View FIGURE 2 ).
Distribution and remarks. Atopobathynella pervulgata sp. nov. has been recorded from three bores from the Gudai Darri area (south Hamersley Range), four sites in the hyporheic habitat near Yandy Creek, four sites in the hyporheic habitat south of the Weeli Wolli Creek, and two bores at West Angelas ( Figs. 1 View FIGURE 1 , 20 View FIGURE 20 ), which represent four disconnected aquifers. This species was previously known by Biologic Environmental Surveys as Atopobathynella sp. “Biologic-PBAT019, PBAT029, PBAT030, PBAT042, and PBAT054”. Despite being collected in several sites geographically closer to eight other Atopobathynella species (see Fig. 20 View FIGURE 20 ), our results indicate that Atopobathynella pervulgata isgenetically closest to A. degreyensis , collected in the De Grey River Catchment, 250 km northeast ( Figs. 1 View FIGURE 1 , 5 View FIGURE 5 ). This is the first example of relatively wide distribution (about 80 km) of Parabathynellidae species in the Pilbara, and the first case of Atopobathynella species with only six pairs of thoracopods.
Etymology. The name of the species derives from the Latin word “pervulgata ” (singular, feminine) meaning widespread, which refers to the distribution of this species.
Genus Kimberleybathynella Cho, Park & Humphreys, 2005
Type species: Kimberleybathynella gigantea Cho, Park & Humphreys, 2005
Other species: see Table 7.
Amended diagnosis (after Cho, Park & Humphreys, 2005).
Body elongated and cylindrical. Antennula six-segmented. Antenna two-segmented. Labrum flat. Maxilla four-segmented, second and third segments of maxilla half-fused. Exopod of thoracopods I–VII one-segmented. Male thoracopod VIII hemispherical, protopodite protruded, basipod without setae, inner margin of basipod drawn out into projection. Distal spine of uropodal sympod longer and thicker than other spines. Uropodal exopod bearing two terminal setae, of which the outer seta is longer than inner one.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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