Travunijana djokovici, Grego 1 & Pešić 2, 2021
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publication ID |
https://dx.doi.org/10.3897/subtbiol.38.64762 |
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publication LSID |
lsid:zoobank.org:pub:6A604C23-5524-4D06-8ED1-D71344627018 |
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persistent identifier |
https://treatment.plazi.org/id/93FAB9F2-2C62-46B8-92D0-8494695354E5 |
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taxon LSID |
lsid:zoobank.org:act:93FAB9F2-2C62-46B8-92D0-8494695354E5 |
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treatment provided by |
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scientific name |
Travunijana djokovici |
| status |
sp. nov. |
Travunijana djokovici sp. nov. Figs 3A, B View Figure 3 , 4A, B View Figure 4
Type locality.
Montenegro • Danilovgrad district, Bandići Village, Vriješko Vrelo spring under road to Modro Oko Lake, left tributary of Matica River, 42.481206°N, 19.145484°E (Fig. 1 View Figure 1 and 2 View Figure 2 ).
Type material.
Holotype: Type locality: J. Grego, G. Jakab. M. Olšavský, M. Kováčiková leg. 20.04.2019, NHMW1132628.
Paratypes: same data: NHMW113629/ 2 dry specimens, HNHM105300/ 2 dry specimens and 37 dry specimens T 1293 in coll. Grego.
Measurements.
Holotype H 3.23 mm; W 1.77 mm; WB 1.46 mm; HA 1.44; WA 1.14.
Paratype H 3.33 mm; W 1.86 mm; WB 1.46 mm; HA 1.49; WA 1.26.
Other material.
Same locality data: 12 fragmented shells in coll. JG T 1294.
Differential diagnosis.
The faintly pitted protoconch clearly distinguishes the new species from the members of the genus Plagigeyeria and indicates its position within the genus Travunijana . Moreover, the weakly sinuated columellar margin also supports its generic assignment.
Compared to the most closely related Travunijana gloeri Grego, 2020, T. vruljakensis Grego & Glöer, 2019 and T. ovalis ( Kuščer, 1937), all from Trebišnjica Basin (Fig. 3C-F View Figure 3 ), the new species differs by its shell morphology, which has more elongate-pyramidal shape, more distinct regular ribs on the shell surface and an elongate lens-like aperture, the latter with more distinct siphonal and anal grove.
Description.
Shell: elongate-conical, milky whitish colour, periostracum yellowish, consisted of five moderately convex whorls with a semi-deep suture. The surface covered by dense, regular weak axial ribs. Aperture elongate, lens-like, its axis declined from the columella; the labral peristome straight in its lateral profile and slightly outward curved and callous. The columella peristome weakly sinuated at its middle part. The siphon and anal groves clearly indicated at the tips of elongated aperture. The umbilicus is tiny, almost closed and hidden behind the reflected columellar margin.
Protoconch very faintly and densely pitted, at the penultimate whorls smoothly transferring through weak malleated structures, faint regular growth lines into a regular weak ribbing covering the rest of the teleoconch.
Etymology.
The new species is named after Novak Djokovic a famous Serbian tennis player to acknowledge his inspiring enthusiasm and energy.
Distribution.
Montenegro; only known from the type locality.
Ecology.
The type locality is a medium sized karst spring with stable water outflow, situated at the border of a limestone massif and alluvium of the Matica River. The status of empty shells washed out of the spring-head suggests its stygobiont habitat inside the karst conduit. The new species was syntopic with Plagigeyeria cf. montenegrina Bole, 1961, Bracenica cf. spiridoni Radoman, 1973, Zeteana sp. and Montenegrospeum cf. bogici ( Pešić & Glöer, 2012) at its type locality thanatocoenosis.
Conservation status.
Number of known locations (1) fewer than 5 and AOO (area of occupancy) smaller than 20 km2. There is no reason to suppose that AOO, EOO (extent of occurrence), number of locations, number of subpopulations or the number or mature individuals are declining or extremely fluctuating. However, due to small AOO it is assessed as Vulnerable (VU) D2 species.
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