Dataset Information

Systematics of the parasitic wasp genus Oxyscelio Kieffer (Hymenoptera, Platygastridae s.l.), part II: the Australian and southwest Pacific fauna.

ABSTRACT: The Australasian and southwest Pacific species of Oxyscelio (Hymenoptera: Platygastridae s.l.) are revised. A total of 80 species are recognized as valid, 13 of which are redescribed: O. atricoxa (Dodd), O. concoloripes (Dodd), O. flavipes (Kieffer), O. grandis (Dodd), O. hyalinipennis (Dodd), O. magniclava (Dodd), O. mirellus (Dodd), O. montanus (Dodd), O. nigriclava (Dodd), O. nigricoxa (Dodd), O. rugulosus (Dodd), O. shakespearei (Girault), and O. solitarius (Dodd). Oxyscelio glabriscutellum (Dodd) syn. n. is placed as a subjective junior synonym of O. rugulosus. Sixty-seven new species are described, many representing new distributional records for the genus - O. aciculae Burks, sp. n., O. anfractus Burks, sp. n., O. bellariorum Burks, sp. n., O. bicoloripedis Burks, sp. n., O. brevitas Burks, sp. n., O. catenae Burks, sp. n., O. caudarum Burks, sp. n., O. circulorum Burks, sp. n., O. clivi Burks, sp. n., O. clupei Burks, sp. n., O. conjuncti Burks, sp. n., O. contusionis Burks, sp. n., O. corrugationis Burks, sp. n., O. croci Burks, sp. n., O. cuspidis Burks, sp. n., O. densitatis Burks, sp. n., O. dissimulationis Burks, sp. n., O. divisionis Burks, sp. n., O. exiguitatis Burks, sp. n., O. fluctuum Burks, sp. n., O. foliorum Burks, sp. n., O. funis Burks, sp. n., O. gressus Burks, sp. n., O. hamorum Burks, sp. n., O. incisurae Burks, sp. n., O. lenitatis Burks, sp. n., O. leviventris Burks, sp. n., O. limbi Burks, sp. n., O. liminis Burks, sp. n., O. linguae Burks, sp. n., O. lintris Burks, sp. n., O. livens Burks, sp. n., O. mystacis Burks, sp. n., O. nasi Burks, sp. n., O. nitoris Burks, sp. n., O. obliquiatis Burks, sp. n., O. oblongiclypei Burks, sp. n., O. obturationis Burks, sp. n., O. oculi Burks, sp. n., O. palati Burks, sp. n., O. pectinis Burks, sp. n., O. pollicis Burks, sp. n., O. proceritatis Burks, sp. n., O. productionis Burks, sp. n., O. radii Burks, sp. n., O. rami Burks, sp. n., O. rupturae Burks, sp. n., O. sarcinae Burks, sp. n., O. scismatis Burks, sp. n., O. sciuri Burks, sp. n., O. scutorum Burks, sp. n., O. sepisessor Burks, sp. n., O. sinuationis Burks, sp. n., O. sordes Burks, sp. n., O. spatula Burks, sp. n., O. stipulae Burks, sp. n., O. stringerae Burks, sp. n., O. tenuitatis Burks, sp. n., O. truncationis Burks, sp. n., O. tubi Burks, sp. n., O. umbonis Burks, sp. n., O. uncinorum Burks, sp. n., O. valdecatenae Burks, sp. n., O. velamenti Burks, sp. n., O. verrucae Burks, sp. n., O. viator Burks, sp. n., and O. wa Burks, sp. n. The fauna is divided into nine diagnostic species groups, with five species unplaced to group.

SUBMITTER: Burks RA

PROVIDER: S-EPMC3800818 | biostudies-other | 2013

REPOSITORIES: biostudies-other

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Publications

Systematics of the parasitic wasp genus Oxyscelio Kieffer (Hymenoptera, Platygastridae s.l.), part II: the Australian and southwest Pacific fauna.

Burks Roger A RA Masner Lubomír L Johnson Norman F NF Austin Andrew D AD

ZooKeys 20130913 331

The Australasian and southwest Pacific species of Oxyscelio (Hymenoptera: Platygastridae s.l.) are revised. A total of 80 species are recognized as valid, 13 of which are redescribed: O. atricoxa (Dodd), O. concoloripes (Dodd), O. flavipes (Kieffer), O. grandis (Dodd), O. hyalinipennis (Dodd), O. magniclava (Dodd), O. mirellus (Dodd), O. montanus (Dodd), O. nigriclava (Dodd), O. nigricoxa (Dodd), O. rugulosus (Dodd), O. shakespearei (Girault), and O. solitarius (Dodd). Oxyscelio glabriscutellum ...[more]

PMID: 24146556

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Project description:BACKGROUND: The diversification of organisms with a parasitic lifestyle is often tightly linked to the evolution of their host associations. If a tight host association exists, closely related species tend to attack closely related hosts; host associations are less stable if associations are determined by more plastic traits like parasitoid searching and oviposition behaviour. The pupal-parasitoids of the genus Ichneumon attack a variety of macrolepidopteran hosts. They are either monophagous or polyphagous, and therefore offer a promissing system to investigate the evolution of host associations. Ichneumon was previously divided into two groups based on general body shape; however, a stout shape has been suggested as an adaptation to buried host pupation sites, and might thus not represent a reliable phylogenetic character. RESULTS: We here reconstruct the first molecular phylogeny of the genus Ichneumon using two mitochondrial (CO1 and NADH1) and one nuclear marker (28S). The resulting phylogeny only supports monophyly of Ichneumon when Ichneumon lugens Gravenhorst, 1829 (formerly in Chasmias, stat. rev.) and Ichneumon deliratorius Linnaeus, 1758 (formerly Coelichneumon) are included. Neither parasitoid species that attack hosts belonging to one family nor those attacking butterflies (Rhopalocera) form monophyletic clades. Ancestral state reconstructions suggest multiple transitions between searching for hosts above versus below ground and between a stout versus elongated body shape. A model assuming correlated evolution between the two characters was preferred over independent evolution of host-searching niche and body shape. CONCLUSIONS: Host relations, both in terms of phylogeny and ecology, evolved at a high pace in the genus Ichneumon. Numerous switches between hosts of different lepidopteran families have occurred, a pattern that seems to be the rule among idiobiont parasitoids. A stout body and antennal shape in the parasitoid female is confirmed as an ecological adaptation to host pupation sites below ground and has evolved convergently several times. Morphological characters that might be involved in adaptation to hosts should be avoided as diagnostic characters for phylogeny and classification, as they can be expected to show high levels of homoplasy.

Dataset Information

Systematics of the parasitic wasp genus Oxyscelio Kieffer (Hymenoptera, Platygastridae s.l.), part II: the Australian and southwest Pacific fauna.

Publications

Systematics of the parasitic wasp genus Oxyscelio Kieffer (Hymenoptera, Platygastridae s.l.), part II: the Australian and southwest Pacific fauna.

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