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Title:	Taxonomy, distribution and phylogeny of the subfamily Metopiinae (Hymenoptera: Ichneumonidae) from Malaysia
Authors:	Nahla Mohamed Abdalla Ismail (P41121)
Supervisor:	Idris Abd Ghani, Prof. Dr.
Keywords:	Metopiinae Genera Species Universiti Kebangsaan Malaysia -- Dissertations
Issue Date:	29-Jul-2017
Description:	Metopiinae (Hymenoptera: Ichneumonidae) is a medium-sized subfamily that is distributed worldwide from the arctic to the tropics. It could be distinguished by the ovoid scape and clypeus that is not separated from the face by a groove. Comparing to the temperate regions, fewer researches has been conducted on ichneumonid diversity and taxonomy in the tropics, particularly in Malaysia. Thus, the objectives of this study were to identify Metopiinae genera and species from Malaysia, to build a dichotomous key to genera and species, to study the distribution of Metopiinae species from Malaysia and to study the phylogeny of Malaysian metopiines based on morphological and molecular data. A total of 613 metopiines from local and foreign repositories such as Centre for Insects Systematics, Universiti Kebangsaan Malaysia (CISUKM); Cytogenetic Laboratory (UKM); Biozentrum, Zoologie III, Am Hubland, Wuerzburg, Germany (Horstmann collection); United States National Museum of Natural History, Smithsonian Institute, Washington (USNM) and the British Natural History Museum, London (BNHM) were examined. Eight genera of Metopiinae were recorded, including Acerataspis Uchida 1934, Chorinaeus Holmgren 1856, Colpotrochia Holmgren 1856, Exochus Gravenhorst 1829, Hypsicera Latreille 1829, Metopius Panzer 1806, Triclistus Foerster 1868 and Trieces Townes 1946. Twenty five species were successfully identified under these genera from Malaysia, 11 of these species were listed as new to science, as follows: Acerataspis tanahrataensis sp. nov., A. sungkaiensis sp. nov., Chorinaeus horstmanni sp. nov., Hypsicera bangiensis sp. nov., H. bicarinatus sp. nov., H. ledangensis sp. nov., H. coxalis sp. nov., H. wangkelianensis sp. nov., H. kinabaluensis sp. nov., Trieces malayensis sp. nov. and T. parvus sp. nov. While, 13 of the identified species were listed as new records, namely Acerataspis fusiformis Morley 1913, Colpotrochia pilosa Cameron 1909, Exochus semiflavus Cushman 1937, E. xanthopus Cameron 1902, E. appendiculatus Cameron 1902, E. coronellus Morley 1913, H. carinata Momoi & Kusigemati 1970, H. erythropus Cameron 1902, H. femoralis Fourcroy 1785, Metopius rufus browni Ashmead 1905, M. dissectorius lar Morley 1912, Triclistus aitkini Cameron 1897 and T. dimidiatus Morley 1913. Moreover, one species Hypsicera cavicola Cushman 1930 was listed as an old record. Descriptions, illustrations, dichotomous keys to all genera and species and their distribution maps were prepared. Based on the plotted distribution maps for all the identified Metopiinae species from Malaysia, Metopiinae was recorded from ten Malaysian states in this study. They were Johor, Kedah, Negeri Sembilan, Pahang, Penang, Perak, Perlis, Sabah, Sarawak and Selangor. The highest species number is 18, was recorded from Pahang. While the lowest recorded species number was from Penang Island, with only two species. Phylogenetic analysis using Maximum Parsimony (MP) and Neighbor Joining (NJ) were conducted based on 56 morphological characters. Both the resulted trees, showed a monophyly of Metopiinae genera from Malaysia, with each genus clustered in a specific clade, with ranges of 50-100% bootstrap values. The relationships between genera and amongst species were all resolved. Phylogeny of seven Hypsicera species was studied using the sequences of cytochrome c oxidase subunit I (COI) with Trieces sp. as outgroup. The resulted trees based on MP and NJ and Bayesian Inference (BI) analyses showed a clear monophyly and separation of the species. This study presented an overview on Malaysian Metopiinae and provided fundamental findings for future studies.,Certification of Master's/Doctoral Thesis" is not available
Pages:	232
Publisher:	UKM, Bangi
Appears in Collections:	Faculty of Science and Technology / Fakulti Sains dan Teknologi

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