Leiorhagium aremuum, Haase, Martin & Zielske, Susan, 2015
publication ID |
https://dx.doi.org/10.3897/zookeys.523.6066 |
publication LSID |
lsid:zoobank.org:pub:1E0C16D8-DD11-429B-A6BC-65862AA7C42B |
persistent identifier |
https://treatment.plazi.org/id/3B015791-A03B-48BB-8C1D-1A829588B5E2 |
taxon LSID |
lsid:zoobank.org:act:3B015791-A03B-48BB-8C1D-1A829588B5E2 |
treatment provided by |
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scientific name |
Leiorhagium aremuum |
status |
sp. n. |
Taxon classification Animalia Littorinimorpha Tateidae
Leiorhagium aremuum View in CoL sp. n.
Type material.
Holotype MNHN IM 2000-27862; paratypes MNHN IM 2000-27863 (28), NHMW 110184 (10).
Type locality.
NeCa 33, Moindou: spring-fed stream close to road in Aremu valley, under shrub, 21°35'04.8"S, 165°39'07.5"E, 26 May 2012.
Etymology.
The new species is named after the Aremu valley, where it has been discovered.
Diagnosis.
Leiorhagium aremuum sp. n. is most similar to Leiorhagium ajie , which is, however, larger and slightly more slender, lacks the palatal denticle, and has a more massive penis. The prolonged capsule gland is unique among New Caledonian tateids. The COI sequences had a p-distance of 9.4%.
Shell.
Broadly pupiform, 1.62 times higher than wide, 3.75-4.25 whorls, without colour, transparent; protoconch faintly pitted with 0.75-0.9 whorls; palatal denticle a small droplet 1/8 whorl behind outer lip; aperture practically as high as wide (Figs 2C, 3E,F, 4E,F).
Operculum.
Elongate-ellipsoidal, paucisprial, nucleus submarginal, orange, two non-calcareous white pegs, eventually accompanied by a small third one (N=4) (Fig. 5E, F).
External features.
Epidermis without pigment, eyes black.
Mantle cavity.
Ctenidium with 15-16 (2 males) or 19-20 (2 females) filaments; osphradium elongate, slightly behind middle of ctenidium.
Digestive system.
Radula formula (N=3) (Fig. 6C): R: 4-5 1 4-5/2-3 2-3, L: 4-5 1 4-6, M1: 26-31, M2: 20-32; stomach without caecum; rectum close to pallial oviduct in females, with short loop left of prostate in males.
Female genitalia.
Ovary without lobes, proximal end 1.25-1.75 whorls below apex, comprising 0.25-0.5 whorls, reaching stomach; capsule gland with long and slender, opaque-white vestibulum, anterior capsule gland yellow-orange, toward posterior capsule gland covered with brown spots, posterior capsule gland opaque-white with a central milky section, albumen gland milky-white; proximal loop of renal oviduct bent forward, distal loop long; bursa copulatrix higher than long, reaching behind albumen gland; bursal duct long, entering anterior; no seminal receptacle (N=3) (Fig. 7C).
Male genitalia.
Proximal end of lobate testis 1 whorl below apex, comprising c. 0.75 whorls, covering proximal end of stomach; vesicula seminalis arising from distal third of testis; penis very long and slender (N=2) (Fig. 8D).
Remarks.
This is Leiorhagium sp. n. 3 of Zielske and Haase (2015). Leiorhagium aremuum sp. n. is only known from the type locality.
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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SubClass |
Caenogastropoda |
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SuperFamily |
Truncatelloidea |
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