Landouria intumescens ( Martens, 1867 ) Nurinsiyah & Neiber & Hausdorf, 2019
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publication ID |
https://doi.org/ 10.5852/ejt.2019.526 |
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publication LSID |
lsid:zoobank.org:pub:3FFC527D-E9CA-4D9F-BF59-076FA60171AC |
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persistent identifier |
https://treatment.plazi.org/id/03B1DB4C-8B1F-4E2D-4FD1-FEF7381EFBD7 |
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treatment provided by |
Plazi |
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scientific name |
Landouria intumescens ( Martens, 1867 ) |
| status |
comb. nov. |
Landouria intumescens ( Martens, 1867) View in CoL comb. nov.
Figs 42 View Figs 29–47 , 53 View Figs 52–55 , 66 View Figs 63–71 , 72–74 View Figs 72–75 ; Tables 3–4 View Table 3 View Table 4
Helix intumescens Martens, 1867: 263 View in CoL , pl. 13, fig. 10 (“bei Surabaya und dem benachbarten Grisse … im Tengergebirge bei Wonosari”) (in part?).
Landouria winteriana – van Benthem Jutting 1950: 463 View in CoL (in part). (not Pfeiffer, 1842)
Diagnosis
Landouria intumescens is characterized by a medium-sized, brownish-corneous, depressed conical, sharply keeled shell and a penis that is divided by a constriction into a long distal and a short proximal section and a flagellum with a broad, crenated distal part and a short and narrow proximal part.
Material examined
Lectotype INDONESIA • lectotype (here designated); East Java, Surabaya ; 7°20′ S, 112°45′ E; E. von Martens leg.; measurements: D = 13.4 mm, H = 8.2 mm; ZMB 5160 View Materials a. GoogleMaps
Paralectotypes
INDONESIA • 7 spec.; same data as for lectotype; ZMB 5160 View Materials GoogleMaps .
Other material
INDONESIA – East Java • 2 spec. (det. anat.); Tuban, Montong, Guwoterus , teak and agroforestry; 6°57′56″ S, 111°47′56″ E; 122 m a.s.l.; MZB 19208 GoogleMaps • 11 spec. (det. anat.); Tuban, Montong, Guwoterus , sumber Krawak , secondary forest; 6°57′50″ S, 111°48′20″ E; 147 m a.s.l.; MZB 19206 GoogleMaps • 1 spec.; same data as for preceding; MZB 19207 GoogleMaps • 8 spec.; same data as for preceding; ZMH 133438 View Materials GoogleMaps • 20 spec.; Bojonegoro, Dander, Sumberarum , mouth of Lawa Cave ; 7°16′30″ S, 111°51′09″ E; 117 m a.s.l.; MZB 19284 GoogleMaps • 10 spec.; same data as for preceding; ZMH 1334110 View Materials GoogleMaps • 1 spec.; Bojonegoro, Dander, Sumberarum , mouth of Sumur Cave ; 7°16′08″ S, 111°51′41″ E; 72 m a.s.l.; MZB 19263 GoogleMaps • 4 spec.; same data as for preceding; MZB 19316 GoogleMaps • 8 spec.; same data as for preceding; ZMH 133415 View Materials GoogleMaps .
Description
SHELL ( Figs 72–74 View Figs 72–75 ; Tables 3–4 View Table 3 View Table 4 ). Depressed conical, with 5–5.75 slightly convex whorls; protoconch almost smooth; teleoconch with fine, irregular wrinkles; apical side with indistinct incised spiral lines, umbilical side with more distinct spiral lines; without scaly processes; tuberculate around umbilicus; brownish-corneous, some with a light brownish band at periphery; body whorl sharply keeled; aperture rounded rhombic; upper insertion of peristome slightly descending; peristome expanded, reflexed and slightly thickened; umbilicus slightly eccentric, wide, comprising 22–34% of shell diameter, hardly obscured by columellar edge.
GENITALIA ( Figs 42 View Figs 29–47 , 66 View Figs 63–71 ; Table 4 View Table 4 ). Atrium short; penis long, distal part cylindrical, broad, tapering proximally, separated from proximal part by a constriction before bend in penis, proximal part slightly dilated at its proximal end, without penis coecum; membranaceous sheath around distal part of penis connected with proximal part of epiphallus by tissue; penial retractor runs from diaphragm to middle part of short, cylindrical epiphallus; flagellum moderately long, broadest near its distal end, slightly crenated, without node, proximal part narrow, almost cylindrical; vas deferens narrow and long; vagina long, distally broad, proximally narrow; oviduct shorter, proximally tapering; peduncle of bursa copulatrix subdivided into a broader, cylindrical distal part and a narrower, longer proximal part, ending in an elongate oval bursa beside albumen gland. Right ommatophoral retractor runs between penis and vagina.
Remarks
Martens (1867: 263, pl. 13, fig. 10) proposed the name H. intumescens for a medium-sized morph from Surabaya, which he figured, but also included a smaller morph from Wonosari in the Tengger Mountains in the nominal taxon. To fix the name for the morph from Surabaya, we designate the specimen figured by Martens (1867: pl. 13, fig. 10; see Fig. 72 View Figs 72–75 ) as the lectotype.
We examined specimens from Tuban Regency anatomically; they agree in shell characters with the morph from Surabaya. The specific identity of these specimens with L. intumescens must be proven by an anatomical examination of specimens from Surabaya.
Whether the smaller paralectotypes of H. intumescens from Wonosari in the Tengger Mountains (ZMB 230704; Fig. 74 View Figs 72–75 ) are conspecific with L. intumescens must also be proven by an anatomical examination.
Landouria intumescens cannot be reliably distinguished from L. winteriana by shell characters. However, the shells of L. intumescens usually differ from those of L. winteriana in the larger diameter (11.6– 14.1 mm vs 9.7–12.6 mm in L. winteriana ) and in the relatively narrower umbilicus, which comprises 22–34% of the shell diameter in L. intumescens vs 29–51% in L. winteriana . Landouria intumescens also differs from L. winteriana in the penis, which becomes narrow towards its proximal end, whereas it ends proximally in a globular dilatation in L. winteriana ( Fig. 15 View Figs 15–24 ).
Distribution
Landouria intumescens is known only from northern East Java (Fig. 53).
| MZB |
Museum Zoologicum Bogoriense |
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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Landouria intumescens ( Martens, 1867 )
| Nurinsiyah, Ayu Savitri, Neiber, Marco T. & Hausdorf, Bernhard 2019 |
Landouria winteriana – van Benthem Jutting 1950: 463
| van Benthem Jutting W. S. S. 1950: 463 |
Helix intumescens
| Martens E. von 1867: 263 |