On two closely related leaf beetle Generа Aulacia Baly 1867 and Colaspoides Laporte 1833 from Indonesia, Malaysia and the Philippines, with the description of the new genus Aulacioides gen. N. (Coleoptera, Chrysomelidae, Eumolpinae)

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A new genus of leaf beetles, Aulacioides gen. n., and a new species, Aulacioides spiridonovi sp. n., are described. Aulacia laeta L. Medvedev 2004 is transferred to Aulacioides, comb. n., also being the type species of the new genus. Four new species of Aulacia Baly are described: A. guskovae sp. n., A. limbipennis sp. n., A. longicostata sp. n. and A. moseykoi sp. n. Three new species of the genus Colaspoides Laporte are described from Java, Indonesia: C. filimonovi sp. n., C. fuscoaenoides sp. n. and C. pangrangensis sp. n. Three further species of Colaspoides are transferred to Aulacia: A. bicoloricollis (L. Medvedev et Romantsov 2014), A. cyaneipennis (L. Medvedev 2004) and A. minuta (L. Medvedev 2006), all comb. n. New identification keys are compiled to almost all species of Aulacia, to both species of Aulacioides gen. n., and to all known members of Colaspoides from Java. The following new species groups showing similar characters are proposed: the femorata group from Borneo for the species with a narrow frons and a keel on the pygidium, this group including A. femorata Baly 1867, A. fulviceps Baly 1867 and A. longicostata sp. n.; the cyaneipennis group, again from Borneo, for the species with a wide frons and a wide lateral border of the elytra, the aedeagus being truncated at the apex and bearing a tooth in the middle, and the pygidium showing no keel; this group includes A. cyaneipennis, A. limbipennis sp. and A. moseykoi sp. n. The diversa group is proposed, and its taxonomic status discussed, to incorporate three poorly studied and similar species of Aulacia: A. diversa Baly 1867, A. flavifrons Jacoby 1896 and A. fulvicollis Jacoby 1899, all from Malacca and Sumatra and all sharing a completely or partially black body upperside and several carinae on the sides of the elytra in females. Aulacia brunnea Jacoby 1894 is recorded from Sumatra for the first time. Photographs both of the adult habitus in dorsal view and the genitals are provided for almost all of the above closely related species. A new name, Colaspoides alexei nom. n., is proposed to replace Colaspoides aeneoviridis Romantsov et Moseyko 2023, a junior homonym of Colasposoma aeneoviride Clark 1865, the latter species subsequently synonymized with Colaspoides cuprea Baly 1867.

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作者简介

P. Romantsov

Russian Entomological Society

编辑信件的主要联系方式.
Email: pawelr@mail.ru
俄罗斯联邦, Krasnoputilovskaya Street 105-9, St. Petersburg, 196240

参考

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  2. Laporte, 1833 (Coleoptera, Chrysomelidae: Eumolpinae) с полуострова Малакка и с Больших Зондских островов // Энтомологическое обозрение. Т. 102. № 1. C. 153–180. https://doi.org/10.31857/S0367144523010094
  3. Baly J.S., 1867. Phytophaga Malayana; a revision of the phytophagous beetles of the Malay
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  8. Jacoby M., 1896. Descriptions of the new genera and species of phytophagous Coleoptera obtained by Dr. Modigliani in Sumatra // Annali del Museo Civico di Storia Naturale di Genova. Serie 2. V. 16. № 36. P. 377–501.
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2. Fig. 1. Aulacia, appearance: A–B – A. bicoloricollis (L. Medvedev Romantsov 2014) (A – male, holotype, B – female, paratype); C – A. bipustulata Baly 1867; D – A. brunnea Jacoby 1894 (male from Sumatra). The scale is 1.0 mm.

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3. Fig. 2. Aulacia, top view: A – A. brunnea Jacoby 1894 (male, light form from Sumatra); B –C – A. cechovsky L. Medvedev 2016 (B – male, C – female); D – A. cyaneipennis (L. Medvedev 2010). The scale is 1.0 mm.

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4. Fig. 3. Aulacia, top view: A – A. femorata Baly 1867 (male from Pensiangan); B – Aulacia sp. (male from Singapore); C – A. fulva L. Medvedev 2004 (male, holotype); D – A. fulvipes Baly 1867 (male from Pensiangan). The scale is 1.0 mm.

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5. Fig. 4. Aulacia, appearance (A–C – top view, D – bottom view): A–B – A. guskovae Romantsov sp. n. (A – male, holotype; B – female, paratype); C–D – A. limbipennis Romantsov sp. n. male, the holotype. The scale is 1.0 mm.

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6. Fig. 5. Aulacia, appearance (A, B, D – top view; C – side view): A–C – A. longicostata Romantsov sp. n. (A – male, holotype; B – female, paratype from Pensiangan; C – female, paratype from Cowardly); D – A. montana Takizawa 2017. The scale is 1.0 mm.

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7. Fig. 6. Aulacia, appearance (A, C, D – top view; B – bottom view): A – A. montana Takizawa 2017 (male, light form); B–D – A. moseykoi Romantsov sp. n. (B–C – female, paratype; D – male, holotype). The scale is 1.0 mm.

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8. Fig. 7. Aulacia, top view: A – A. minuta (L. Medvedev 1995) (male, paratype); B – A. nigella (Weise 1922) (male); C – A. ornata Jacoby 1896 (female, paralectotype); D – A. riedeli L. Medvedev 2004 (female, paratype); E – Aulacia sp. (male, Luzon). The scale is 1.0 mm.

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9. Fig. 8. Aulacioides, appearance (A–C – top view, D – bottom view): A–B – A. laeta (L. Medvedev 2004) (A – male; B – female, paratype); C–D – A. spiridonovi Romantsov sp. n., male, holotype. The scale is 1.0 mm.

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10. 9. Colaspoides, appearance (A, C – top view; B, D – bottom view): A–B – C. filimonovi Romantsov sp. n., male, holotype; C–D – C. fuscoaenoides Romantsov sp. n., male, holotype. The scale is 1.0 mm.

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11. 10. Colaspoides, appearance (A–B, D–E – top view; C – bottom view): A–B – C. javana Weise 1924, male, holotype; C–D – C. pangrangensis Romantsov sp. n., male, holotype; E – C. variations Baly 1867. The scale is 1.0 mm.

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12. 11. Aulacia, Aulacioides, Colaspoides, structural details (A–C – anterior thorax, side view; D–F – head, front view): A, E – Aulacia moseykoi Romantsov sp. n., male, holotype; B, D – Aulacioides spiridonovi Romantsov sp. n., male, holotype; C – A. longicostata Romantsov sp. n., male, holotype; F – Colaspoides pangrangensis Romantsov sp. n., male, holotype. The scale is 0.5 mm.

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13. 12. Aulacia, Aulacioides, structural details (A–E – abdomen, F–I – pygidium): A – Aulacia bipustulata Baly 1867; B – A. guskovae Romantsov sp. n., female, paratype; C – A. ornata Jacoby 1894, paralectotype; D – Aulacioides laeta (L. Medvedev 2004), male; E, I – A. spiridonovi Romantsov sp. n., male, holotype; F – Aulacia limbipennis Romantsov sp. n., male, holotype; G – A. longicostata Romantsov sp. n., female, paratype; H – A. moseykoi Romantsov sp. n., male, holotype. The scale is 0.5 mm.

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14. Fig. 13. Aulacia, appearance of holotypes (all females) and their labels from NHM (A, D, G – top view, B, E, H – side view; C, F, I – labels): A–C – A. bipustulata Baly 1867; D–F – A. femorata Baly 1867; G–I – A. fulvipes Baly 1867. The scale is 1.0 mm.

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15. 14. Aulacia, edeaguses (A, C, D, F, J, L, O – top view; B, E, G, K, N, Q – side view; H, I, M, P – bottom view): A–B – A. bicoloricollis (L. Medvedev et Romantsov 2014), holotype; C–E – A. brunnea Jacoby 1894 (C – specimen from Penang; D–E – specimen from Sumatra); F–H – A. cechovsky L. Medvedev 2016; I–K – A. femorata Baly 1867 (specimen from Sandakan); L–N – A. fulvipes Baly 1867 (specimen from Pensiangan), O–Q – A. guskovae Romantsov sp. n., male, holotype. The scale is 0.25 mm.

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16. 15. Aulacia, Colaspoides, edeaguses (A, E, I, L, N, R, S – top view; B, D, F, J, M, P, T – side view; C, G, H, K, O – bottom view): A–B – Colaspoides parvula Baly 1867, holotype; C–D –Aulacia fulva L. Medvedev 2004, holotype; E–G –A. longicostata Romantsov sp. n., holotype; H–J – A. minua (L. Medvedev 1995); K–M –A. montana Takizawa 2017; N–P – A. nigella (Weise 1922), synotype; Q–R – Aulacia sp. (a copy from Luzon); S–T – Aulacia. sp. (a copy from Singapore). The scale is 0.25 mm.

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17. Fig. 16. Aulacia (cyaneipennis species group), Aulacioides, edeagus (A, D, G, J, M – top view; B, E, I, K, N – side view; C, F, H, L, O – bottom view): A–C – Aulacia cyaneipennis (L. Medvedev 2010); D–F – A. limbipennis Romantsov sp. n., holotype; G–I – A. moseykoi Romantsov sp. n., holotype; J–L – Aulacioides laeta (L. Medvedev 2004); M–O – A. spiridonovi Romantsov sp. n., holotype. The scale is 0.25 mm.

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18. 17. Colaspoides, edeaguses (A, D, G, J, N, P, Q – top view; C, F, H, L, O, R – side view; B, E, I, K, M – bottom view): A–C – C. fuscoaenea Baly 1867 (specimen from Borneo); D–F – C. fuscoaenoides Romantsov sp. n., holotype; G–I – C. filimonovi Romantsov sp. n., holotype; J–L – C. pangrangensis Romantsov sp. n., holotype; M–O – C. variations Baly 1867; P–R – C. javana Weise 1924, holotype. The scale is 0.25 mm.

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19. Fig. 18. Aulacia, Aulacioides, Colaspoides, spermatechs: A – Aulacia bicoloricollis (L. Medvedev et Romantsov 2014), paratype; B – A. cechovsky L. Medvedev 2016, paratype; C – A. brunnea Jacoby 1894 (specimen from Fraser's Hill); D – A. fulvipes Baly 1867 (specimen from Pensiangan); E–F – A. longicostata Romantsov sp. n., paratype from Cowardly; G –A. montana Takizawa 2017; H – A. moseykoi Romantsov sp. n., paratype; I – Aulacioides laeta (L. Medvedev 2004) (specimen from Tanakh Rat); J–K – Colaspoides fuscoaenoides Romantsov sp. n., paratype; L – C. fuscoaenea Baly 1867 (specimen from Borneo); M – C. pangrangensis Romantsov sp. n., paratype; N – C. variants Baly 1867. The scale is 0.25 mm.

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