Abstract
Batakomacrus Kolarov, 1986 is redefined and Orthocentrus flaviceps Gravenhorst, 1829 and O. caudatus Holmgren, 1858 transferred to Batakomacrus (both new combinations); B. crassicaudatus Kolarov, 1986 is proposed as a junior synonym of B. caudatus syn. nov., and B. noyesi n.sp. is described from English and Scottish specimens. Keys to the species of Batakomacrus and to the genera of the Orthocentrus genus-group are provided. The extendable metasoma and ovipositor of Batakomacrus are illustrated and the possible phylogenetic significance of some character states are discussed. A preliminary phylogenetic analysis of representative Orthocentrus group species provides some evidence for the monophyly of all genera in the Orthocentrus group except for Stenomacrus, which is evidently paraphyletic as currently defined. Orthocentrus daucus Gauld, 1984 and O. excalibur Gauld, 1984 are transferred to Stenomacrus (both new combinations). Batakomacrus probably represents a rather basal clade within the Orthocentrus group but the character evidence for this is weak.References
Aubert, J.F. (1981) Révision des Ichneumonides Stenomacrus sensu lato. Mitteilungen Münchner Entomologischen Gesellschaft, 71, 139–159.
Gauld, I.D. (1984) An introduction to the Ichneumonidae of Australia. British Museum (Natural History).
Goloboff, P., Farris, J. & Nixon, K. (2003) T.N.T.: Tree Analysis Using new Technology. Program and documentation, avaible from the authors, and at www.zmuc.dk/public/phylogeny/TNT (November 2009).
Kolarov, J.A. (1986) A revision of the Orthocentrinae of Bulgaria (Hymenoptera: Ichneumonidae). Annales Historico-Naturales Musei Nationalis Hungarici, 78, 255–264.
Quicke, D.L.J., Wyeth, P., Fawke, J.D., Basibuyuk, H.H., & Vincent, J.F.V. (1998) Manganese and zinc in the ovipositors and mandibles of hymenopterous insects. Zoological Journal of the Linnean Society, 124, 387–396.
Nixon, K.C. (1999) Winclada (BETA) ver. 0.9.9. Published by the author, Ithaca, N.Y.
Thomson, C.G. (1897) LVI. Försök till gruppering af arterna inom slägtet Orthocentrus. Opuscula Entomologica, Lund, XXII, 2419-2450.
Townes, H.K. (1971) The genera of Ichneumonidae, Part 4. Memoirs of the American Entomological Institute, 17, 1–372.
Wahl, D.B. (1990) A review of the mature larvae of Diplazontinae, with notes on larvae of Acaenitinae and Orthocentrinae and proposal of two new subfamilies (Insecta: Hymenoptera, Ichneumonidae). Journal of Natural History, 24, 27–52.
Wahl, D.B. & Gauld, I.D. (1998) The cladistics and higher classification of the Pimpliformes (Hymenoptera: Ichneumonidae). Systematic Entomology, 23, 265–298.
Yu, D.S. & Horstmann, K. (1997) A catalogue of world Ichneumonidae (Hymenoptera). Memoirs of the American Entomological Institute, 58, 1–1558.
Yu, D.S., Achterberg, C. van, & Horstmann, K. (2005) World Ichneumonoidea 2004 - Taxonomy, Biology, Morphology and Distribution. DVD/CD. Taxapad.