Atopobathynella inopinata, Bandari & Shaik & Ranga Reddy, 2017
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publication ID |
https://doi.org/ 10.1080/00222933.2017.1360528 |
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publication LSID |
lsid:zoobank.org:pub:18BD9A75-5D38-470F-B8C2-D56F645831C4 |
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persistent identifier |
https://treatment.plazi.org/id/03D77950-FFA1-0559-ACB9-D1A1FC4EFB21 |
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treatment provided by |
Felipe |
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scientific name |
Atopobathynella inopinata |
| status |
sp. nov. |
Atopobathynella inopinata sp. nov.
( Figures 14 – 17 View Figure 14 View Figure 15 View Figure 16 View Figure 17 )
Type locality
Borewell in the residential area of Kunchanapalli village (16º28 ʹ 14 ʹʹ N 80º36 ʹ 53 ʹʹ E), beside the National Highway No GoogleMaps . 5, in Guntur district of Andhra Pradesh, South India ( Figure 1 View Figure 1 (a)) . The borewell was sampled once a week for 4 months, between 3 May 2005 and 5 September 2005.
Type material examined
Holotype adult female (ZSI C 5860/2/a – l), dissected on 12 slides allotype adult male (ZSI C 5861/2/a – j), dissected on 12 and 10 slides, respectively; paratype adult females, one
(C 5862/2/a – i), dissected on 12 slides, one (ZSI C5863/2) mounted whole on a slide and one (MNHN-Sy 50) preserved in alcohol. 3 June 2005, Coll. B. Elia.
Diagnosis
Body size up to 1.15 mm, nine times longer than maximum width, labrum with 16 teeth. Male Th VIII protopod massive with frontal protrusion. Paddle-like basexopod, Dentate lobe smooth. Female Th VIII pyriform. Uropodal sympod with a row of 11 serrulate inhomonomous spines, distalmost longest. Anal operculum flat and rounded in lateral view.
Etymology
The specific epithet is derived from the Latin adjective ‘inopinatus’, meaning ‘ unexpected ’, and alluding to the unexpected discovery of this interesting taxon in India. The name, thus, is an adjective agreeing in gender with the (feminine) generic name.
Female (based on holotype). Total body length of holotype 1.15 mm. Body elongated, cylindrical, segments progressively widening and lengthening towards posterior end and with only six pairs of thoracopods ( Figure 14 View Figure 14 (a)). Head 18% longer than wide and 53% longer than first two thoracic segments combined.
Antennule ( Figure 15 View Figure 15 (a)) 6-segmented, no sexual dimorphism, eight times longer than maximum width and 67% longer than head. Length of first three segments greater than that of remainder. First segment longest with one small plumose seta at inner distal margin and one long ventral simple seta at outer distal corner, one ventral simple seta at distal region, one short, dorsal simple seta on outer distal margin, one dorsal plumose seta on outer distal margin and one short simple seta at proximal outer corner. Second segment with two plumose setae and one dorsal simple seta at inner distal corner, one ventral plumose seta and one dorsal plumose seta at outer distal corner. Third segment with one short, dorsal simple seta on inner distal corner and two unequal simple setae on outer distal region. Inner flagellum short, somewhat squarish with three long, unequal simple setae. Fourth segment with one long, simple seta at inner distal corner, over-reaching the fifth segment, and one small plumose seta at inner distal margin; apophysis very short, with two unequal plumose setae and one stub seta. Fifth segment with three long unequal simple setae and three long aesthetascs. Sixth segment with four unequal simple setae and three aesthetascs.
Antenna ( Figure 15 View Figure 15 (c)) small, 1-segmented, spatulate, twice as long as maximum width, with two long, terminal, one subterminal, unequal simple setae and one lateral simple seta at inner corner.
Labrum ( Figure 15 View Figure 15 (d)) flat and with four small, median teeth flanked by six main teeth on either side. Ventral surface with a pair of teats and fine spinules as illustrated.
Mandible ( Figure 15 View Figure 15 (e,f)) distal part of pars incisiva with three strong teeth, pointed in lateral view. Pars molaris consisting of five spines, distal one strong and distinct at base. Fine spinlues present at base of spine row. Tooth of ventral edge triangular. Palp of one segment, 1.7 times longer than wide, bearing a long terminal spiculated seta six times as long as palp.
Paragnaths ( Figure 15 View Figure 15 (g)) coupler highly elevated, 1.4 times longer than wide, distally slightly depressed and provided with fine spinules. Lateral arms small, conical, anteriorly directed and without ornamentation.
Maxillule ( Figure 15 View Figure 15 (h)) with two endites. Proximal endite small, elongated, somewhat rectangular, carrying four curved, unequal, serrulate, claw-like spines. Distal endite 2.6 times as long as wide, armed with four terminal and two subterminal serrulate claws and three simple setae on outer distal margin.
Maxilla ( Figure 15 View Figure 15 (i)) 4-segmented. Basal segment 1.4 times as long as wide and with two setae at distal inner corner. Segment-2 0.4 times as long as basal segment and with four setae. Segment-3 nearly as long as basal segment and with 10 setae. Segment-4 smallest and with seven setae. Setal formula 2 – 4-10 – 7
Th I – VI ( Figure 16 View Figure 16 (a – f)): well-developed, Th I – III gradually increasing in size and Th IV – VI almost similar size. Well-developed, 1-segmented, club-shaped epipod on Th II – VI at least 0.6 times as long as basis. Coxa with distinct slightly pointed projection at distal inner border. Basis with inner marginal seta reaching only midlength of first endopodal segment on Th I and over-reaching first endopodal segment on Th II – VI. Exopod 1-segmented, 0.4 times as long as endopod with two terminal, long, unequal simple setae on Th I ( Figure 17 View Figure 17 (a)) and 0.7 times as long as endopod on Th II – VI with one long, terminal plumose seta, one short, terminal simple seta and one subterminal plumose seta. Fine spinules present at base of terminal seta on all thoracopods. Endopod 4-segmented, two and three endopodal segments of Th II – VI ornamented each with two rows of spinules. Setal formulae: Th I 1 + 0/ 1 + 1/1 + 0/2(1), Th II – VI 0 + 0/0 + 1/0 + 1/1(0).
Th VIII ( Figures 14 View Figure 14 (b) and 17(c)) pyriform.
Pleopod I ( Figure 17 View Figure 17 (c)) simple seta.
Uropod ( Figure 17 View Figure 17 (a)): sympod stout, 3.7 times as long as wide, bearing a row of 11 serrulate inhomonomous spines on distal margin, proximal nine spines uniform in length, distal most spine 6% longer than remaining spines. Exopod cylindrical, nearly 4.6 times as long as wide, measuring 38% of sympod length and bearing one terminal spiculated seta and one subterminal spiculated setae; outer seta 3.9 times as long as inner seta. Endopod drawn out into spur, reaching 53% of sympod length and with two unequal simple setae at base of spur.
Pleotelson ( Figure 17 View Figure 17 (a)) with one seta on either side, seta smooth and shorter than caudal furca. Anal operculum ( Figures 17 View Figure 17 (a) and 14(c)) flat and rounded in lateral view.
Caudal furca ( Figure 17 View Figure 17 (a)): nearly 0.8 times longer than wide, with two stout apical and two short inner spines and with two unequal plumose setae. Furcal organ small and ventral.
Description
Male (based on allotype). Total body length of allotype 1.07 mm. Body and all appendages except Th VIII as in female.
Th VIII ( Figure 17 View Figure 17 (b)): parallel to body, protopod massive, somewhat ovate in outline, twice as wide as long and with frontal protrusion. Dentate lobe elongated, conical and denticles not discernible in latero-external view. Outer lobe triangular. Inner lobe rounded and blunt distally. Basexopod elongated posteriorly and paddle-like, in lateroexternal view. Endopod not discernible.
Variation
Body size varies from 0.90 mm to 1.15 mm, mean = 1.02 mm (n = 15). The number of spines borne by sympod of uropod is either 10 or 11.
Ecology
The fauna that co-occurred with the new species included Serbanibathynella primaindica Ranga Reddy and Schminke, 2005 , Parastenocaris sp. and amphipods.
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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