University of Illinois Urbana-Champaign

The Sphegigasterini: A Cladistic Analysis and Generic Classification With Reviews of Selected Genera (Hymenoptera: Pteromalidae)

Heydon, Steven Lee

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Description

Title
The Sphegigasterini: A Cladistic Analysis and Generic Classification With Reviews of Selected Genera (Hymenoptera: Pteromalidae)
Author(s)
Heydon, Steven Lee
Issue Date
1988
Doctoral Committee Chair(s)
LaBerge, Wallace E.,
Department of Study
Entomology
Discipline
Entomology
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Biology, Entomology
Abstract
  • The Sphegigasterini sensu strictu (Boucek, 1988) is defined by the possession of a basal flange on the petiole. The history of the genera belonging to the Sphegigasterini sensu strictu is reviewed. The author's intuitive classification of the genera is given.
  • Rhicnocoelia Graham and Callimerismus Graham are redefined and their relationships with other genera of the Miscogasterinae are discussed. Rhicnocoelia and Callimerismus each have two North American species.
  • Bubekia Dalla Torre is redefined and a key is given to distinguish the three Neartic species.
  • The Cyrtogaster-group, which includes Cyrtogaster Walker, Novitzkyanus Boucek, Tricyclomischus Graham, and Callicarolynia n.g., is defined herein and a phylogenetic analysis of relationships among these genera and their relationships to other miscogasterine genera is presented. Polycystus Westwood is synonymized with Cyrtogaster Walker. Keys are given to the seven Nearctic Cyrtogaster species, and a summary of the biology of the genus and each species is presented. A new Hawaiian Cyrtogaster species is described. Polycystus clypeatus Girault is transferred to Thinodytes Graham and Polycystus luteipes Howard is transferred to Halticoptera Spinola. A new genus, Callicarolynia, is described for a new Nearctic species, C. eruga.
  • The Halticoptera-group is defined and includes the genera Halticoptera Spinola, Halticopterina Erdos, Syntomopus Walker, Notoglyptus Masi, Thinodytes Graham, the new genus Protohalticoptera, and the Ethiopian genus Ploskana Boucek. The world species of Protohalticoptera and Thinodytes and Nearctic species of Syntomopus are reviewed. A phylogenetic analysis of the genera of the Halticoptera-group is presented.
  • Notoglyptus is redescribed, its relationships to other genera of the Miscogasterinae are discussed, and a key is given for distinguishing the known world species. The distribution of Notoglyptus virescens Masi is extended to the Nearctic region and four new species of Notoglyptus from the New World are described.
  • A phylogenetic analysis, using PAUP, of the 17 genera in the Sphegigasterina sensu strictu and six outgroup taxa from the Miscogasterini and Ormocerini is presented. Ten equally parsimonious trees of 169 steps with a consistency index of 0.396 were produced by the analysis. Characters defining the generic groups are discussed and a comparison is made of the results of the analysis with the authors intuitive classification. The low consistency index is compared with that found in similar studies.
Graduation Semester
1988
Type of Resource
text
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http://hdl.handle.net/2142/71110

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