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(Stylommatophora, Boettgerillidae) in Crimea

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(Stylommatophora, Boettgerillidae) in Crimea Ruthenica, 2012, vol. 22, No. 2: 111-114. © Ruthenica, 2012 Published October 20, 2012. http: www.ruthenica.com The first findings of a slug Boettgerilla pallens (Stylommatophora, Boettgerillidae) in Crimea I.A. BALASHOV, A.A. BAIDASHNIKOV I.I. Schmalhausen Institute of Zoology, National Academy of Sciences of Ukraine, B. Khmelnytsky str. 15, Kiev-30, MSP, 01601, UKRAINE. E-mail: [email protected] ABSTRACT. Slug Boettgerilla pallens was found in 4 in 1987 and 1988. Collecting cites (Fig. 1 A): 1 – localities in Crimea in 1987-1988. Three of these locali- Alushta city, park near the sea coast, under stones ties are situated in the urban landscapes on the south (05.10.1987); 2 – Yalta city, stand of poplar trees coast of Crimea. The fourth locality is in the natural along a fence, under stones (12.10.1987); 3 – Niki- mountain forest of the Crimean Nature Reserve. Short ta settlement (Yalta municipality), neglected area description of the slugs is given, reproductive system near Nikita botanical garden and homesteads, under illustrated. The concomitant terrestrial molluscs are specified. The borders of B. pallens native range are stones (13.10.1987); 4 – the Crimean Nature Re- discussed. serve (Alushta municipality), near Seduna cordon and Kos’mo-Demianovsky monastery, beech forest on the rocky slope, in litter and under stones, The Crimean Mountains are a small mountain approximate coordinates 44°40’N, 34°16'E, eleva- system located parallel to the Black Sea coast on the tion above sea level about 650-850 m (04.10.1988). south of the Crimean Peninsula (southern Ukraine). Its extension is about 160 km and width is up to 50 Results km, the highest point – 1545 m (Roman-Kosh Six specimens of B. pallens were collected in 4 Mountain). Origin of this mountain system and its localities. All specimens have cylindrical vermiform biodiversity are connected with Caucasus and north- body with very thin sole, their length is up to 30 mm ern Pontic Mountains. Terrestrial molluscs of the (soft fixation). Reproductive system was studied in Crimean Mountains, as well as urban fauna of the one specimen from the Crimean Nature Reserve nearby cities, were studied in detail as early as in the (Fig. 1 B) and one more specimen from the Yalta XIX — beginning of the XX century, when the city. Atrium is long, vagina of about same length as most currently known species were recorded. 102 atrium, thinner than atrium. Free oviduct in 2-3 species of terrestrial molluscs are registered here, times shorter than vagina, of the same width. Bursa including 20 endemics [Balashov, Gural-Sverlova, copulatrix enters vagina far from the atrium. Duct 2012]. Only several of these were registered for the of bursa copulatrix is short, about same length as first time in Crimea during last 60 years. Neverthe- free oviduct. Reservoir of bursa copulatrix is long less, the number of species in any region always and massive, elongate, somewhat pointed. Penis is can be increased by the invasive species. Moreover, slightly longer and wider than vagina. Penial retrac- each mountain system contains very diverse habi- tor is short, but massive. Middle part of vas defer- tats, and some invertebrates populations can exist in ens with a fusiform muscular body (corpus fusifor- the very restricted area and live secretively. Thus a mis), which is slightly larger than penis. Presence population of Vertigo moulinsiana (Dupuy, 1849) of this structure is a differential characteristic of the was discovered in the Crimean Mountains in 2009. Boettgerillidae [Likharev, Wiktor, 1980]. By the elon- It inhabits very small marshland (< 0.01 km2) in the gate shape of bursa copulatrix our specimens differ ravine. This is the only known population of this from the second species of this family – Boettgeril- species in Ukraine [Balashov, Palatov, 2011]. New la compressa Simroth, 1910 [Likharev, Wiktor, interesting finding for Crimea is the slug Boettgeril- 1980]. la pallens Simroth, 1912 collected by Dr. A.A. From 4 studied localities 3 are situated in Baidashnikov in 4 localities in 1987-88, both in the the settlements. Together with B. pallens in these urban and natural mountain habitats. urban landscapes were collected such species as Material and methods Oxychilus deilus (Bourguignat, 1857), Monacha fru- ticola (Krynicki, 1833) [localities 1-3], Tandonia Material was collected by Dr. A.A. Baidashnikov retowskii (Boettger 1882) [syn. T. kaleniczenkoi 112 I.A. Balashov, A.A. Baidashnikov FIG. 1. A – collecting cites: 1-4 – see “Material and methods”; B – reproductive system of Boettgerilla pallens from the Crimean Nature Reserve (locality 4): at – atrium; va – vagina; fo – free oviduct; bc – bursa copulatrix; vd – vas deferens; cf – corpus fusiformis; pe – penis; pr – penial retractor. РИС. 1. А – места сбора: 1-4 см. “Material and methods”; В – половая система Boettgerilla pallens из Крымского природного заповедника (местонахождение 4): at – атриум; va – вагина; fo – яйцевод; bc – семяприемник; vd – семяпровод; cf – веретеновидное тело; pe – пенис; pr – пениальный ретрактор [kalenzkoi] (Clessin, 1883)] [localities 1, 2], Dero- the primary natural mountain beech forests of the ceras reticulatum (O.F. Müller, 1774), Limacus ma- Crimean Mountains (our data). V. substriata is a culatus (Kaleniczenko, 1851), Helix albescens rare species in Crimea, known only by few records. Rossmässler, 1839 [localities 1, 3], Eobania ver- miculata (O.F. Müller, 1774) [locality 3] and Lauria Discussion cylindracea (Da Costa, 1778) [locality 1]. These species are more or less common in urban environ- B. pallens, as well as B. compressa, was de- ment on the south coast of Crimea (Sverlova et al., scribed from the natural mountain forest in Abkha- 2006; our data). D. reticulatum and E. vermiculata zia. For the long time these species were known are probably not native in Crimea. only from the Western Caucasus. But since 1950-th In natural mountain forest (locality 4) B. pallens numerous populations of B. pallens were found in was collected together with such native species as the urban landscapes of Central, Western, Northern Carychium tridentatum (Risso, 1826), Cochlicopa and Eastern Europe [Likharev, Wiktor, 1980; Reise lubrica (O.F. Müller, 1774), Cochlicopa lubricella et al., 2000]. Moreover, this species was intro- (Porro, 1838), Vertigo substriata (Jeffreys, 1833), duced in Canada and Columbia [Reise et al., 2000; Cochlodina laminata (Montagu, 1803), Mentissa Hausdorf, 2002]. In Ukraine B. pallens is known canalifera (Rossmässler, 1836), Discus ruderatus from the Lvov city, Ivano-Frankovsk city and Cher- (W. Hartmann, 1821), Punctum pygmaeum (Drapar- novka village of Chernovitsy region in the western naud, 1801), Euconulus fulvus (O.F. Müller, 1774), Ukraine [Sverlova et al., 2006]; from Kiev [Sverlo- Vitrea contracta (Westerlund, 1871), Aegopinella va et al., 2006], Vinnitsa city [Balashov, Baidashni- minor (Stabile, 1864), Oxychilus diaphanellus kov, 2012] and Lubny town of Poltava region [Bal- (Krynicki, 1836), Deroceras tauricum (Simroth, ashov, 2010] in the central Ukraine; from the natu- 1901) and Krynickillus melanocephalus Kalenic- ral forest habitat on the Donetsk Upland in the zenko, 1851. Except B. pallens and V. substriata eastern Ukraine [Gural-Sverlova, Martynov, 2009]. such species composition of molluscs is typical for Consequently, our finding of this species in Crimea First finding of Boetgerilla pallens in Crimea 113 is the first record from the southern Ukraine. How- were studied not so deeply, several species, includ- ever, for the urban landscapes in the southern coast ing native ones, were found for the first time re- of Crimea the presence of this species would be cently [Gural-Sverlova et al., 2009; Balashov, Gural- expected. Much more unusual is the finding in the Sverlova, 2012]. Molluscs of Donetsk Upland till natural forest of the Crimean Mountains. This for- last years were almost not studied at all. Therefore, est is situated in the middle of the largest Crimean B. pallens probably could have been missed for the reserve, at the distance more than 5 km from the long time in these territories. Moreover, B. pallens nearest settlement. However, in the vicinities of this is mainly subterranean species [Likharev, Wiktor, locality small residence of reserve forestry (Seduna 1980; Seidl, Seidl, 1997; Reise et al., 2000] and in cordon) and active monastery are present. These the natural mountain habitats of Crimea it probably places, especially monastery, probably would be a much harder to be found. Consequently, it is possi- source of B. pallens invasion. But it is also possible ble, that B. pallens is a native species in the Crimean that this species is native in the Crimean Mountains. Mountains and Donetsk Upland. Further investiga- In the Central Europe B. pallens was found in the tion is required to clarify the appearance of B. natural habitats several times [De Wilde et al., 1983; pallens in the Crimean Mountains and Donetsk Seidl, Seidl, 1997; Reise et al., 2000] and some Upland. authors even suggest that this species is native here [Turner et al. 1998]. But for Belgium, where B. References pallens is known since 1967, it was proven, that this species did not occur here at least before 1950 Balashov I.A. 2010. Land mollusks (Gastropoda, Pul- [De Wilde et al., 1983; Reise et al., 2000]. Current- monata) of the Poltava region. Proceedings of the ly this species is almost widespread in Belgium, State Natural History Museum, 26: 191-198 [in Ukrai- sometimes occurs in the natural habitats [De Wilde nian]. et al., 1983; Reise et al., 2000]. A rapid range Balashov I.A., Baidashnikov A.A. 2012. Terrestrial mol- luscs (Gastropoda) of Vinnytsa region and their expansion of B. pallens was also shown in Austria confinement to different phytocenoses. Vestnik in 1994-1997 [Seidl, Seidl, 1997; Reise et al., 2000]. Zoologii, 46(1): 19-28 [in Russian]. If this species would be native in Central Europe it Balashov I., Gural-Sverlova N. 2012. An annotated would occupy these habitats much earlier.
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