Fabio CASSOLA. Taxonomy

Transcription

1 Fabio CASSOLA Roma, Italy Studies of Tiger Beetles. CLXII. A new Cylindera (subgenus LEPTINOMERA) from Sabah, Malaysia, with RECORDS of other species (Coleoptera: Cicindelidae) Cassola, F., Studies of tiger beetles. CLXII. A new Cylindera (subgenus Leptinomera) from Sabah, Malaysia, with records of other species (Coleoptera: Cicindelidae). Tijdschrift voor Entomologie 149: , figs [issn ]. Published 1 December A new species, Cylindera (Leptinomera) duffelsiana sp. n., is described from the Tawau river in southeastern Sabah, Malaysia, and some new distributional records of other species from Sabah are given. The subgenus Leptinomera now includes 20 species, of which 13 occur in northern Borneo. A checklist is provided. Dr. Fabio Cassola, Via F. Tomassucci 12/20, I Roma, Italy. fabiocassola@alice.it Key words: Cicindelidae; Sabah, Malaysia; Cylindera (Leptinomera); new species; new records. After my own revision of the small Cylindera tiger beetle species of the subgenus Leptinomera Rivalier, 1961 (Cassola 1983) and a few subsequent publications (Wiesner 1989, 1996, 1998, Naviaux 1991, Cassola 1995, Cassola & Probst 1995, Matalin & Cassola 2000), one further new species has now been found, thus expanding the number of species so far known to belong to this basically Sundaic subgenus to 20. The distribution of the subgenus ranges from Java, Borneo, and Sumatra northwards to Malacca, Thailand and Myanmar (Burma). The highest number of species, however, is known from northern Borneo (13 species). A checklist is provided below. The scanty available information indicates that these small, seldom collected, forest-dwelling tiger beetles are to be found along streams and streamlets (like the species of the Oriental genus Therates and those of the Wallacean genera Thopeutica and Wallacedela), where they sit on wet mossy rocks in the channels or on the overhanging vegetation (Bouchard 1901, Bryant 1919, Moulton 1914, Cassola 1983). Occasionally, they have been collected at light or in Malaise traps (Wiesner 1989). The specimens studied are currently held in the Zoological Museum, Amsterdam, The Netherlands (zman) and in the author s collection (fcc). Taxonomy Checklist of subgenus Leptinomera Rivalier, 1961 Cylindera (Leptinomera) filigera (Bates, 1878) Dis tribution: Kalimantan (Indonesia): S.E. Borneo ; Sarawak (Malaysia): Gg. Mulu NP, Kapit; Sabah (Malaysia): Mt. Kinabalu, Bukit Monkobo, Long Pa Sia-Long Samado. Cylindera (Leptinomera) catoptroides (W. Horn, 1892) Distribution: Sumatra (Indonesia): Bandajara, Ketambe, Dolok Merargir, Huta Padang, Sibolangit, Sidikalang, Anei Kloof, Inderapura, Lubuksikaping, Padangpanjang, Pajakombo, Sukaraja, Palembang, Gg. Tanggamus; West Malaysia: Perak, Tapah, Lata Lembik, Taman Negara, Cameron Highlands; Sarawak (Malaysia): Retuh, Gg. Mulu NP; Sabah (Malaysia): Mt. Kinabalu; Brunei: Temburong. Cylindera (Leptinomera) gestroi (W. Horn, 1892) Distribution: Sumatra (Indonesia): Sukaranda, Anei Kloof, Baturadja, W Kotacane, E Atjeh, Inderapura. Cylindera (Leptinomera) longipalpis (W. Horn, 1892) Distribution: Java (Indonesia): Modjakarta, Sukabumi, Pengalengan; Sumatra (Indonesia): Kutacane, Lumbandjulu, Padangpandjang, Palembang. 203

2 T JD HR T V R E T L G E, V LU E 149, 2006 Fig. 1. Cylindera (Leptinomera) duffelsiana, paratype female, habitus. Cylindera (Leptinomera) maxillaris (W. Horn, 1895) Distribution: Sumatra (Indonesia): Kotacane, Dolok Merargir, Medan, Parapat, Anei Kloof, Lubuksikaping, Sjulakderas, Padangpandjang, Palembang. Cylindera (Leptinomera) bouchardi (W. Horn, 1900) Distribution: Sumatra (Indonesia): Padangpandjang, Curup. Cylindera (Leptinomera) plasoni (W. Horn, 1903) Distribution: Sabah (Malaysia): Mt. Kinabalu, Poring Springs, Mt. Dulit, Bukit Monkobo, Danum Valley, Sipitang, Gg. Emas-Crocker Mt.; Brunei: Temburong. Cylindera (Leptinomera) pseudolongipalpis (W. Horn, 1930) Distribution: Sumatra (Indonesia): Dolok Merangir, Curup. Cylindera (Leptinomera) discovelutinosa (W. Horn, 1931) Distribution: Sabah (Malaysia): Mt. Kinabalu, Long Pa Sia-Long Samado, Beaufort, Crocker Range. Cylindera (Leptinomera) bryanti Cassola, 1983 Distribution: Sarawak (Malaysia): Retuh, Mt. Merinjak, Shrang River. Cylindera (Leptinomera) perparva Cassola, 1983 Distribution: Sarawak & Sabah (Indonesia): British Borneo ; Sabah (Malaysia): Bukit Monkobo, Keningau, 60 km W Danum Valley. Cylindera (Leptinomera) hammondi Cassola, 1983 Distribution: Sarawak (Malaysia): Gg. Mulu NP, Kapit; Brunei: Buhit Sulang. Cylindera (Leptinomera) dieckmanni Cassola, 1983 Distribution: Sarawak (Malaysia): Mt. Matang, Quop; Sabah (Malaysia): Silam. Cylindera (Leptinomera) kibbyana Cassola, 1983 Distribution: Sarawak (Malaysia): Gg. Mulu NP; Sabah (Malaysia): Gg. Kinabalu NP, Porings Springs, Labuan, Danum Valley, Long Pa Sia-Long Samado, Beaufort, Sipitang, Gg. Emas-Crocker Mt.; Brunei: Temburong; Kalimantan (Indonesia): SE Borneo, Mt. Bawang. Cylindera (Leptinomera) brendelliana Naviaux, 1991 Distribution: Thailand: Thung Yai Wildl. Sanct., Betong; Myanmar (Burma): Dawna Range, Kachin, Sagaing. Cylindera (Leptinomera) virgulifera Cassola, 1995 Distribution: Sabah (Malaysia): Mt. Kinabalu; Sarawak (Malaysia): Bukab. Cylindera (Leptinomera) macrodonta Cassola & Probst, 1995 Distribution: Brunei: Temburong. Cylindera (Leptinomera) sarawakensis Wiesner, 1996 Distribution: Sarawak (Malaysia): Kapit. Cylindera (Leptinomera) kualatahanensis Matalin & Cassola, 2000 Distribution: West Malaysia: Kuala Tahan. Cylindera (Leptinomera) duffelsiana Cassola, sp. n. Distribution: Sabah (Malaysia): Tawau Hills. Cylindera (Leptinomera) catoptroides (W. Horn) Cicindela catoptroides W. Horn, 1892: 78. Type locality: Sumatra, Indonesia. Material. peninsular malaysia: Pahang: Taman Negara NP, Kuala Juram, E of Merapoh, 04 39N E, 13.iii.1999, at light (edge primary rainforest nr dormitory), J.P. & M.J. Duffels, M. Zaidi & M.Y. Ruslan, 3. Endau Rompin NP, jct. logging rd/access rd, N E, 12.iv.2001, at light (forest edge; transect edge 7), M.A. Schouten, 2 ; 15.v.2001, at light (forest edge; transect edge 10), M.A. Schouten & A.J. de Boer, 1 ; 16.ii.2001, at light (forest edge; transect edge 1), M.A. Schouten, 1, 2. Endau Rompin NP, Janing ridge, 20 min., N E, 18.ii.2001, at light (primary lowland forest, transect primary 2), M.A. Schouten, 1 ; Sandbank sg. Endau, N E, 204

3 Cassola: new Cylindera from Sabah a Janing ridge, N E, 20.v.2001, at light (disturbed forest, transect primary 10), M.A. Schouten & A.J. de Boer, 1. 1 mm Note. This is probably the most common species of the genus, known from Sumatra (where it was first described) and Malacca. Records from Borneo (Horn 1931; Cassola 1983) need confirmation, as misidentification of specimens is a possibility. C. (L.) catoptroides is bronze greenish in colour, with four evenly-sized elytral dots, metallic legs, and a short half-testaceous labrum. Cylindera (Leptinomera) plasoni (W. Horn) Cicindela plasoni W. Horn, 1903: 423. Type locality: Mt. Kinabalu, Sabah ( Kinibalu ). Material. sabah: Tawau Hill jungle lodge, 300m, 25.iii.2001, at light (garden/secondary growth), J.P. & M.J. Duffels, 1 ; Tawau Hill, along Sungay Tawau, nr trail to Air Panas, 300m, 27.iii.2001, at light (riverbed in primary riverine forest), J.P. & M.J. Duffels, 2, 6. b Note. This species, apparently endemic in Sabah, was for a long time only known from two female specimens from the Mt. Kinabalu area (Cassola 1983). Wiesner (1989) recorded some additional specimens and described the male. Like C. (L.) catoptroides, it is dark bronze in colour, with four similarly-sized elytral dots (rarely just two), metallic legs, and a short half-testaceous labrum, but the females have smooth and shiny shoulders and a large round elytral mirror (males, in contrast, have matt shoulders). Moreover, the sides of pronotum are slightly pubescent. 0,5 mm Fig. 2. Cylindera (Leptinomera) duffelsiana, holotype female. a. habitus; b. labrum. 19.ii.2001 (day catch), M.A. Schouten & A.J. de Boer, 1. Endau Rompin NP, jct. logging rd/access rd, N E, 20.ii.2001, at light (forest edge; transect edge 2), M.A. Schouten, 4 ; 22.ii.2001, at light (forest edge; transect edge 5), M.A. Schouten, 1 ; 24.ii.2001 at light (forest edge; transect edge 3), M.A. Schouten, J.P. Duffels & M.J. Duffels, 3, 1. Endau Rompin NP, rd Staging Point to Kuala Jasin, bridge 9, 21.iii.1999, at light (disturbed forest margin), J.P. & M.J. Duffels, M. Zaidi & M.Y. Ruslan, 1 ; 12.viii.1999, at light (disturbed forest margin), J.P. Duffels, M.A. Schouten & M.Y. Ruslan, 1 ; 24.iii.1999, at light (disturbed forest margin), J.P. & M.J. Duffels, M. Zaidi & M.Y. Ruslan, 1. Endau Rompin NP, Cylindera (Leptinomera) virgulifera Cassola Cylindera (Leptinomera) virgulifera Cassola, 1995: 117. Type locality: Mt. Kinabalu, Sabah (Malaysia). Material. sabah: Gunung Kinabalu, Sayap, 950m, 06 10N E, 8.iii.2001, at light (primary forest edge in front of ranger house nr Sungay Kermantis), J.P. Duffels & M.A. Schouten, 12, 18 ; Sayap, 1000m, 06 10N E, Gua Melayu trail, 10.iii.2001, at light (clearing in primary forest), J.P. Duffels & M.A. Schouten, 1. Note. This species, described from Mt. Kinabalu in Sabah, but also from a locality in Sarawak (Cassola 1995), is slightly larger in size than the preceding species, silky emerald-green in colour, with a halftestaceous labrum, a small submarginal middle dot and a remarkably larger, distinctly comma-shaped, subapical spot. Numerous additional specimens have recently been collected in the same area. 205

4 T JD HR T V R E T L G E, V LU E 149, 2006 Cylindera (Leptinomera) kibbyana Cassola Cylindera (Leptinomera) kibbyana Cassola, 1993: 30. Type locality: Gg. Mulu NP, Sarawak (Malaysia). Material. sabah: Gunung Kinabalu, Sayap, 950m, 06 10N E, 8.iii.2001, at light (primary forest edge in front of ranger house nr Sungay Kermantis), J.P. Duffels & M.A. Schouten, 1 ; Tawau Hill jungle lodge, 300m, 25.iii.2001, at light (garden/secondary growth), J.P. & M.J. Duffels, 1 ; Tawau Hill, 300m, along Sungay Tawau, nr trail to Air Panas, 27.iii.2001, at light (riverbed in primary riverine forest), J.P. & M.J. Duffels, 3, 1. Note. I have first described this pretty species from the Gunung Mulu NP area in Sarawak (Cassola 1983), but several additional specimens were subsequently found in Sabah (Wiesner 1989; Cassola 1995) and in Brunei [Temburong, Belalong Field Research Centre, 100 m, 2-8.v.95 (mixed dipterocarp forest), Heiss leg, 1, 3 (fcc)]. C. (L.) kibbyana is remarkable because of its striking sexual colour dimorphism (males being olive-green, females blue green to blue violet) and moreover because it has, unlike most other species, a fully metallic labrum. Cylindera (Leptinomera) duffelsiana sp. n. (figs. 1-2) Type material. Holotype, (zman), 2 paratypes (zman, fcc). sabah: Tawau Hill, 300m, along Sungay Tawau, nr trail to Air Panas, 27.iii.2001, at light (river bed in primary riverine forest), J.P. & M.J. Duffels. Diagnosis. A small Leptinomera species, closely related to C. (L.) kibbyana Cassola, 1983 but easily distinguished by the bronze-green body colour (rather than blue to blue-violet), the shorter elytra, the relatively large, round elytral mirror, and the occurrence of a smaller middle dot in addition to the larger subapical one. Labrum short, transverse, with 6-8 setae, glossy black. Antennae long, projecting well over the middle of the elytral length. Pronotum blackish-green, glabrous, same length as width, distinctly rounded at sides. Legs metallic black with some greenish reflections. Male unknown. Description. Head mostly black, with green reflections on clypeus, antennal plates, orbital declivities, and genae; glabrous, only two setigerous punctures near the edge of each eye. Surface almost smooth, very finely striated on frons and vertex, with a few stronger longitudinal striae on the orbital declivities and genae. Eyes relatively small, slightly protruding and not greatly raised above the vertex. Labrum very short, transverse, glossy black, with 6-8 submarginal setae near forward edge. Mandibles pitch-black, slightly rufous on apical and inner teeth. Labial and maxillary palpi slender, elongate, testaceous, with the last joint dark metallic; second joint of maxillary palpi with a slight metallic sheen dorsally. Antennae slender, relatively long, projected well over the half of the elytral length; scape and second joint glossy black with some slight greenish reflections, a single seta on tip of scape; articles 3 and 4 slightly tinged with violet on their extremities, with 2-3 short, fine, spiniform setae only near base and tip; antennomeres 5-11 dull black with some metallic lustre, very finely and evenly pubescent. Pronotum glabrous, as long as wide, distinctly rounded at sides, blackish-green; surface almost smooth, just finely and unevenly wrinkled transversally; proepisterna black, glabrous in the middle, with long white semi-erect setae in the front half and near the hind sulcus. Mesepisterna almost glabrous except for a few white setae near the coxae; mesepisternal coupling sulcus a marked pit in lower part, near the mesepimeral rim. Mesepimera, metepisterna and sides of sternum evenly covered with white recumbent pubescence. Elytra relatively short, wide, somewhat enlarged at the rear, bronze-green with a somewhat velvety appearance, the shoulders and a large roundish elytral mirror distinctly glossy on the elytral ground; apical margin narrowly shining black. Elytral markings consisting of two small roundish dots on each elytron, the front one very small, positioned at about the middle, approximately at a third of the elytral width, the posterior one much larger, situated near the subapical angle, close to but not touching the elytral border; humeral dot absent in female. Apical margin rounded, not serrulate, sutural teeth small but distinct, slightly overlapping with each other. Epipleura dark with a metallic sheen. Abdominal sternites dull black, with bluish-green metallic reflections, slightly shagreened on disc, evenly covered with fine white recumbent hairs on the sides. Legs metallic black with some slight bluish-green reflections. Coxae metallic bluish-black, the hind ones with white recumbent hairs on their lateral edges; trochanters rufous-testaceous. Male unknown. It is expected to be a bit smaller, with a bit longer antennae. Length: mm (without labrum). Etymology. The new species is cordially dedicated to its collector, Dr. J.P. Duffels (Institute for Systematics & Population Biology, Zoological Museum, University of Amsterdam, The Netherlands), whom I had the pleasure of meeting during the 20th I.C.E. (Florence 1996). Another tiger beetle species, Wallacedela duffelsi Cassola, 1991, which he had collected in Central Sulawesi, Indonesia, had been dedicated to him some years ago (Cassola 1991). Remarks. On account of its fully metallic labrum 206

5 Cassola: new Cylindera from Sabah and the shape of its head, the new species is obviously a close relative of the co-occurring C. (L.) kibbyana Cassola, 1983, which, however, is blue to blueviolet in the females (rather than green), and moreover has slightly longer elytra, a smaller unobtrusive elytral mirror, and just one single elytral dot (the subapical one). On the other hand C. (L.) catoptroides (W. Horn, 1892) differs from duffelsiana in its darker body colour, its non-glossy shoulders, the approximately evenly-sized elytral spots, and the halftestaceous labrum. From C. (L.) plasoni (W. Horn, 1903), the new species differs in its greenish glossy (rather than dull dark bronze) elytra, the smaller middle elytral dots, the green rather than goldencupric elytral mirror, the glabrous and more laterally rounded pronotum and, again, because of the fully metallic (instead of half-testaceous) labrum. Couplet 4 in my 1983 key can be modified accordingly as follows: 4. Labrum at least partly testaceous... 6 Labrum metallic, blue-green to violet-black a 4a. Inner teeth of mandibles normally shaped... 4b Inner teeth of mandibles flattened, halberdshaped... C. macrodonta 4b. Larger ( mm), sexually dimorphic (male olive-green, female more or less blue-violet); elytral markings reduced to a subapical roundish dot only; female elytral mirror blue, usually poorly evident... C. kibbyana Smaller ( mm); female bronze green, with glossy shoulders and elytral mirror; a tiny middle dot on elytra, in addition to the larger subapical one... C. duffelsiana Acknowledgements Thanks are to be given to Mr. Ben Brugge (Entomology Section, Zoological Museum, Amsterdam, The Netherlands), who submitted this interesting consignment of specimens for identification, and to Prof. Claudio Vita-Finzi (London, U.K.), who kindly revised the English text. References Bouchard, M., Sur quelques Cicindèles de Sumatra (Col.). Bulletin de la Société Entomologique de France 1901: Bryant, G.E., Entomology in Sarawak, Borneo. Entomologist s Monthly Magazine 55: Cassola, F., Studi sui Cicindelidi. XXXII. Le Cylindera del subgen. Leptinomera Rivalier (Coleoptera, Cicindelidae). Redia 66: Cassola, F., Studies on Tiger Beetles. LXXVII. New data on the species of the genus Cylindera Westwood, 1831, subgenus Leptinomera Rivalier, 1961 (Coleoptera: Cicindelidae). Zoologische Mededelingen 69: Cassola, F. & J. Probst, A new Cylindera species (subgenus Leptinomera Rivalier) from Brunei, northern Borneo (Coleoptera: Cicindelidae). Coleoptera 10: Horn, W., Fünf Dekaden neuer Cicindeleten. Deutsche Entomologische Zeitschrift 1892: Horn, W., Some Cicindelinae from Mt. Kinabalu, North Borneo, including a new species. Journal of the Federation of the Malay States Museum 16: Matalin, A.V. & F. Cassola, A new Cylindera Westwood, 1831 species of the subgenus Leptinomera Rivalier, 1961 from Peninsular Malaysia, with notes on two other tiger beetle species (Coleoptera: Carabidae: Cicindelinae). Russian Entomological Journal 9: Moulton, C., Zoological notes on a collecting expedition in Borneo. Zoologist (4) 18: , Naviaux, R., Les Cicindèles de Thaïlande, étude faunistique (Coleoptera, Cicindelidae). Bulletin Mensuel de la Société Linnéenne de Lyon 60: Rivalier, E., Démembrement du genre Cicindela L. (Suite) (1). IV. Faune Indomalaise. Revue Française d Entomologie 28: Wiesner, J., Über eine Cicindelidae-Ausbeute aus Nord-Borneo. 18. Beitrag zur Kenntnis der Cicindelidae. Entomologische Blätter für Biologie und Systematik der Käfer 85: Wiesner, J., Beitrag zur Kenntnis der Cicindelidae von Borneo (Sarawak) (Coleoptera). (43. Beitrag zur Kenntnis der Cicindelidae). Entomologische Zeitschrift 106: Wiesner, J., Beitrag zur Kenntnis der Sandlaufkäfer von Brunei (Coleoptera: Cicindelidae). (52. Beitrag zur Kenntnis der Cicindelidae). Entomologische Zeitschrift 108: Received: 20 December 2005 Accepted: 22 April