Identifier

etd-07052011-114408

Degree

Doctor of Philosophy (PhD)

Department

Entomology

Document Type

Dissertation

Abstract

The family Phalacridae is monographed at the genus level using modern phylogenetic and classification methods. A morphological matrix of 106 characters and 2063 base pairs of aligned 18S rDNA sequence data were analyzed both separately and in a concatenated matrix, using maximum parsimony, Bayesian methods, and maximum likelihood. The phylogenetic hypotheses were used to construct a new subfamilial classification for the family. I recognize eight subfamilies, including two described as new: Biophytinae Guillebeau 1894, Eustilbinae Guillebeau 1892, Ochrolitinae Guillebeau 1894, Olibrinae Guillebeau 1892, Olibroporinae, subfam. nov., Olibrosominae, subfam. nov., Phaenocephalinae Matthews 1899, Phalacrinae Guillebeau 1892. Twenty-eight new generic synonymies are established. Ten new genera and seven new species are described: Antennogasmus, gen. nov. (type species: A. cordatus, sp. nov.), Austroporus, gen. nov. (type species: A. victoriensis (Blackburn)), Malagasmus Gimmel, gen. nov. (type species: M. thalesi, sp. nov.), Malagophytus, gen. nov. (type species: M. steineri, sp. nov.), Neolitochrus, gen. nov. (type species: N. pulchellus (LeConte)), Paracylomus, gen. nov. (type species: P. asiaticus (Champion)), Platyphalacrus, gen. nov. (type species: P. lawrencei, sp. nov.), Ranomafanacrinus, gen. nov. (type species: R. nigrinus, sp. nov.), Steinerlitrus, gen. nov. (type species: S. warreni, sp. nov.), Sveculus, gen. nov. (type species: S. lewisi, sp. nov.). Generic reassignments resulted in 201 new combinations. Two new names have been established for secondary homonyms. Type species are designated for two previously described genus-group names. Three new species-group synonymies are established. One name is resurrected from synonymy. Lectotypes are designated for 23 species. One genus and two species are excluded from Phalacridae: Sternosternus Guillebeau (type species: S. grouvellei Guillebeau) and Parasemus parvopallidus Lea, both of which belong in Hydrophilidae. All 34 resulting genera in the family Phalacridae (except Pseudolibrus Flach, nomen inquirendum) are keyed, described, and illustrated. A comprehensive literature review summarizes the present knowledge of the biology, immature stages, distribution, and taxonomy of all taxa of Phalacridae, and a world catalogue is given for the group. Presentation of nomenclatural changes in this dissertation does not constitute formal publication.

Date

2011

Document Availability at the Time of Submission

Secure the entire work for patent and/or proprietary purposes for a period of one year. Student has submitted appropriate documentation which states: During this period the copyright owner also agrees not to exercise her/his ownership rights, including public use in works, without prior authorization from LSU. At the end of the one year period, either we or LSU may request an automatic extension for one additional year. At the end of the one year secure period (or its extension, if such is requested), the work will be released for access worldwide.

Committee Chair

Carlton, Christopher E.

Included in

Entomology Commons

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