Ecologica Montenegrina 44: 57-62 (2021) This journal is available online at: www.biotaxa.org/em http://dx.doi.org/10.37828/em.2021.44.8 First records of Ceutorhynchus turbatus Schultze, 1903 (Coleoptera: Curculionidae) from Novosibirsk Oblast (Western Siberia, Russia) and Eastern Kazakhstan ANDREI A. LEGALOV1,2,3* & SERGEI V. RESHETNIKOV4 1 Institute of Systematics and Ecology of Animals, SB RAS, Frunze street 11, Novosibirsk, 630091, Russia 2 Altai State University, Lenina 61, Barnaul, 656049, Russia 3 Tomsk State University, Lenina Prospekt 36, 634050 Tomsk, Russia 4 Kropotkina street 273, Novosibirsk, 630111, Russia. E-mail: [email protected] * Corresponding author. E-mail: [email protected] Received 11 July 2021 │ Accepted by V. Pešić: 30 July 2021 │ Published online 2 August 2021. Abstract The first records of Ceutorhynchus turbatus Schultze, 1903 (Curculionidae, Conoderinae, Ceutorhynchitae, Ceutorhynchini) from Western Siberia (Novosibirsk Oblast) and Eastern Kazakhstan (East Kazakhstan Region) are given. They are the most north-eastern and south-eastern finds of this species. A key for identifying species from Ceutorhynchus parvulus-group is presented. Key words: Biodiversity, Ceutorhynchini, Russia, Kazakhstan, new records. Introduction The genus Ceutorhynchus Germar, 1823 is usually associated with the family Brassicaceae, but several species develop on Resedaceae, Linaceae, Capparaceae and Tropaeolaceae (Korotyaev 1980, 2008; Colonnelli 2004). Fifty seven species of this genus were recorded from Siberia (Legalov 2020) and 65 from Kazakhstan (Alonso-Zarazaga et al. 2017). The genus Ceutorhynchus differs from the closely related genera by the curved rostrum narrower than the profemora, the pronotum base slightly angularly elongate towards the scutellum, and the elytra without spots or stripes of scales. The species of Ceutorhynchus parvulus-group are characterized (Korotyaev 1980) by the elytral striae without scales, the pronotum with lateral tubercles, the femora without teeth and small body sizes (1.0−2.2 mm). Ceutorhynchus liliputanus Schultze, 1898 from South-eastern Europe, Caucasus, Asia Minor, Middle and Central Asia, C. parvulus Brisout de Barneville, 1869 from Europe, C. sordidus Faust, 1885 from Middle Asia, and C. turbatus Schultze, 1903 from the Western and Central Palaearctic (Korotyaev 1980; Colonnelli 2004; Alonso-Zarazaga et al. 2017) belong to this group. These species develop on Alyssum lenense Adams, Lepidium appelianum Al-Shehbaz, L. campestre L., L. coronopifolium Fisch. ex Ledeb, L. crassifolium Waldst. et Kit., L. draba (L.), and L. Ecologica Montenegrina, 44, 2021, 57-62 FIRST RECORDS OF CEUTORHYNCHUS TURBATUS FROM NOVOSIBIRSK OBLAST heterophyllum Bentham (Colonnelli 2004; Dedyukhin and Korotyaev 2020). The complexes of the weevil species associated with Lepidium crassifolium and L. coronopifolium was revised by Dedyukhin and Korotyaev (2020). Ceutorhynchus turbatus was collected on Lepidium crassifolium during an expedition of the Laboratory of Phylogeny and Faunogenesis. One specimen from Kazakhstan is in the collection of the Institute of Systematic and Ecology of Animals, SB RAS. In this paper, the most north-eastern and south-eastern finds of Ceutorhynchus turbatus (Fig. 5) are given. Material and methods Studied specimens are kept in the ISEA – Institute of Systematics and Ecology of Animals (Russia: Novosibirsk) and CSRN = the private collection of S.V. Reshetnikov (Novosibirsk). Descriptions, photograph (Fig. 2) and body measuring were performed using a Zeiss Stemi 2000-C dissecting stereomicroscope. Some photographs (Figs. 1, 3−4) were taken with a camera Fujifilm X-T10 by S.V. Reshetnikov (Novosibirsk). The terminology of weevil body is according to Lawrence et al. (2010). The systematics of studied taxa are based on Alonso-Zarazaga et al. (2017) and Legalov (2018). Systematics Insecta: Coleoptera: Curculionidae: Conoderinae: Ceutorhynchitae: Ceutorhynchini Genus: Ceutorhynchus Germar, 1823 Ceutorhynchus parvulus-group Species: Ceutorhynchus turbatus Schultze, 1903 (Figs. 1, 2) Material: 25 ex. (ISEA), 3 ex. (CSRN), RUSSIA, Novosibirsk Oblast, Krasnozerskii District, env. Gor’koe Lake, 53,894° N, 79,050° E, on Lepidium crassifolium, 16.VI.2021, leg. A. Legalov and S. Reshetnikov; 1 ex. (ISEA), Altaiskii Krai, Rubtsovsky District, 8 km N of Troinka, env. Kizikha River, 51°35' N, 81°40' E; 7−8.VI.2017, A. and V. Legalov; 1 ex. (ISEA), KAZAKHSTAN, East Kazakhstan Region, Urzhar [Urdzhar] District, env. Kaindy (=Vostok), Kokterek riv., 12.VI.2002, I.I. Ljubechakskii. Description. Male: Body black, lustrous, with white, quite narrow, appressed scales. Antennomeres 1-8, apices of femora, tibiae and tarsi more or less brown. Rostrum long, cylindrical, curved, longer than pronotum, finely punctate in apical half, narrower than profemora. Forehead wide, distinctly wider than rostrum base width, flat, densely punctate. Eyes large, rounded, not protruding from contour of head. Vertex densely punctate. Temples short. Antennae geniculate, long, almost reaching middle of pronotum, inserted beyond middle of rostrum. Funicle 7-segmented. Antennal club compact. Pronotum weakly transverse, with lateral tubercles. Base biconcave. Disc densely, coarsely punctate, with weak medial longitudinal groove. Distance between punctures smaller than puncture diameter. Pronotal constriction distinct. Sides of pronotum convex medially. Scutellum small. Elytra quite wide, without spots or stripes of scales. Humeri weakly convex. Striae regular, without scales. Interstriae weakly convex, with two rows of scales. Apices of elytra rounded separately. Prosternum with postocular lobes and rostral channel. Mesepimeron enlarged, visible between bases of prosternum, elytra, covered with wide scales. Metacoxal cavities dilated, separated by apex of ventrite 2. Abdomen convex, flattened in middle, punctate. Ventrites 1–5 oriented in one plane. Ventrites 1 and 2 elongate, fused. Ventrite 3 and 4 short. Ventrite 5 long with middle impression. Pygydium exposed. Legs long. Femora weakly swollen, punctate, without teeth. Tibiae weakly curved, weakly flattened. Meso- and metatibiae with mucro. Tarsi long, with pulvilli on underside. Tarsomeres 1 and 2 conical. Tarsomere 3 bilobed. Tarsomere 5 elongate. Claws large, with minute teeth. Length of body: 1.3-1.6 mm. Female: Antennae inserted near middle of rostrum. Abdomen convex, not flattened in middle. Ventrite 5 with very weak impression. Meso- and metatibiae without mucro. Length of body: 1.6-1.9 mm. 58 LEGALOV & RESHETNIKOV Figure 1. Ceutorhynchus parvulus, female, habitus, dorsal view. Ecologica Montenegrina, 44, 2021, 57-62 59 FIRST RECORDS OF CEUTORHYNCHUS TURBATUS FROM NOVOSIBIRSK OBLAST Figure 2. Aedeagus of Ceutorhynchus parvulus. Scale bar 0.2 mm. Distribution. Europe, Caucasus, Asia Minor, Western Siberia, Kazakhstan, Middle Asia. Remarks. This species is associated with species of the genus Lepidium. We collected C. turbatus on L. crassifolium (Figs. 3−4). Key to species of Ceutorhynchus parvulus-group 1. Tarsal claws without teeth 2 - Tarsal claws toothed 3 2. Elytral interstriae with two rows of scales. Pronotum slightly narrowed C. parvulus apically. Body sizes larger (1.7-2.2 mm). - Elytral interstriae with a row of scales. Pronotum strongly narrowed apically. C. liliputanus Body sizes smaller (1.0-1.6 mm). 3. Tarsal claws with large teeth. Rostrum honey-yellow Body length: 1.8-2.0 C. sordidus mm. - Tarsal claws with minute teeth. Rostrum black. Body length: 1.3-1.9 mm. C. turbatus 60 LEGALOV & RESHETNIKOV Figure 3. Ceutorhynchus parvulus on Lepidium crassifolium (photo by S.V. Reshetnikov). Figure 4. Ceutorhynchus parvulus on Lepidium crassifolium (photo by S.V. Reshetnikov). Ecologica Montenegrina, 44, 2021, 57-62 61 FIRST RECORDS OF CEUTORHYNCHUS TURBATUS FROM NOVOSIBIRSK OBLAST Figure 5. Distribution of Ceutorhynchus parvulus in Ural, Kazakhstan and Siberia. Acknowledgements The authors thank Dr. Boris A. Korotyaev (Russia: Saint-Petersburg) for the opportunity to study comparative material deposited in the Zoological Institute RAS, Dr. Nikolai N. Laschinskiy (Novosibirsk) for determination of host plant, and anonymous reviewers for the valuable comments that improved the manuscript. References Alonso-Zarazaga, M.A., Barrios, H., Borovec, R., Bouchard, P., Caldara, R., Colonnelli, E., Gültekin, L., Hlavá, P., Korotyaev, B., Lyal, C.H.C., Machado, A., Meregalli, M., Pierotti, H., Ren, L., Sánchez- Ruiz, M., Sforzi, A., Silfverberg, H., Skuhrovec, J., Trýzna, M., Velázquez de Castro, A.J., Yunakov, NN. (2017) Cooperative catalogue of Palaearctic Coleoptera Curculionoidea. Monografías electrónicas, 8, 1–729. Colonnelli, E. (2004) Catalogue of Ceutorhynchinae (Insecta: Coleoptera: Curculionidae) of the world, with a key to genera. Argania editio, Barcelona, Spain. 124 p. Dedyukhin, S.V., Korotyaev, B.A. (2020) Weevil complexes (Coleoptera, Curculionoidea) associated with Lepidium crassifolium Waldst. et Kit. and L. Coronopifolium Fisch. ex Ledeb. (Brassicaceae) in the southern steppe at the boundary between Europe and Asia. 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