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Systematics of Gyrinidae
Graduate Research Assistant
Department of Biology
University of New Mexico
Museum of Southwestern Biology
167 Castetter Hall, MSC03 2020
Albuquerque, NM 87131-0001
Voice mail: (505) 277-4225
Email (replace (AT) with @): gtgustafson(AT)gmail.com
I am interested in the systematics of the family Gyrinidae, commonly known as the whirligig beetles, performing alpha taxonomy within the group as well as using phylogenetics to answer and explore interesting questions about evolution and biogeography within the Gyrinidae. Specifically, my current work focuses on the tribe Dineutini within the Gyrinidae. The Dineutini contains the largest and most conspicuous members of the whirligigs and is composed of the genera Porrorhynchus, Dineutus, Andogyrus, Macrogyrus, and Enhydrus.
This group is interesting from two aspects; taxonomically and biogeographically. Taxonomically the group has two of its five component genera with their monophyly in question, and three of the genera have been extensively divided into subgenera, whose monophyly have never been tested phylogenetically. Biogeographically this group is very interesting, especially in reference to the largest genus with the Dineutus. Dineutus is found in North America from Panama northward, throughout Africa, in to the Middle East, down to Southeast Asia, the Pacific Islands, New Guinea, and Australia. It is suspiciously missing from South America. To make matters even more interesting South America has two dineutine genera endemic to it: Enhydrus and Andogyrus. Of these, recent molecular evidence has suggested that Andogyrus is nested within the primarily Australian and New Guinean genus Macrogyrus, which is absent from Africa. My phylogenetic work will hopefully reveal the interesting evolutionary histoy explaining these biogeographic relationships as well as clarifying the higher taxonomy of the Dineutini.
Another area of interest for me is the relationships of sexual selection and diversity within the whirligig beetles. Gyrinids are highly conserved ecologically and morphologically, except for those characters associated with sexual selection. My thesis work is also examining sexually selected characters in relation to species numbers, in order to ascertain a correlation between numerous sexually selected traits and increased species numbers. An important aspect of this is sperm diversity. Whirligig beetles exhibit a variety of sperm conjugation types. Sperm conjugation is a type of sperm competition strategy relatively rare among animal groups but appearing in a variety of forms within the family Gyrinidae.
Aside from the systematics of Gyrinidae, I perform work in other aquatic beetle groups and have interests in aquatic beetle systematics as a broader whole. I first began aquatic beetle systematics work under Dr. Andrew Short at the University of Kansas working on small groups within the Hydrophilidae and have performed several projects within the Hydradephaga outside of the Gyrinidae. In the future I intend to continue work on aquatic beetle systematics but keeping the Gyrinidae as my primary focus.
- Gustafson, G.T., C.A. Maier, S.M. Baca, & C.K. Faris. Scientific Note: Rediscovery of Lutrochus laticeps Casey, 1893 (Coleoptera: Lutrochidae) and the Discovery of Dineutus productus Roberts, 1895 and Dineutus serrulatus analis Régimbart, 1882 (Coleoptera: Gyrinidae) in Kansas, with Notes on Habitat Preference. In press The Coleopterists Bulletin.
- Baca, S.M., G.T. Gustafson, M. Toledo, & K.B. Miller. 2014. Revision of the Neotropical burrowing water beetle genus Liocanthydrus Guignot (Coleoptera: Noteridae: Noterinae: Noterini) with the description of two new species. Zootaxa, 3793(2): 231-246.
- Gustafson, G.T. & K.B. Miller. 2013. On the family- and genus-series nomina in Gyrinidae Latreille, 1810 (Coleoptera, Adephaga). Zootaxa, 3731(1): 077-105.
- Gustafson, G. T. & K. B. Miller. 2012. A new species of Desmopachria Babington (Coleoptera: Dytiscidae: Hydroporinae: Hyphydrini) from Venezuela. Koleopterologische Rundschau Vol. 82: 71-76.
- Gustafson, G.T. & A.E.Z. Short. 2010 Revision of the Neotropical water scavenger beetle genus Phaenostoma Orchymont (Coleoptera: Hyrdophilidae: Coelostomatini). ACTA Entomologica Musei Nationalis Pragae 50(2): 459-469.
- Gustafson, G.T. & A.E.Z. Short. 2010 Revision of the Neotropical water scavenger beetle genus Guyanobius Spangler (Coleoptera: Hydrophilidae: Chaetarthriini). Aquatic Insects 32(4): 245-258.
- Gustafson, G. T. & Chaboo, C.S. 2009. Ambulatory use of ventro-lateral abdominal ampullae by larvae of Labidomera clivicollis (Kirby) (Coleoptera: Chrysomelidae: Chrysomelinae). The Coleopterists Bulletin 63(3): 357-363.
- Gustafson, G. T. & K. B. Miller, 2014 (Submitted) The North American whirligig beetles of the genus Dineutus Macleay (Coleoptera: Gyrinidae: Gyrininae: Dineutini). Zookeys.
- Gustafson, G. T. & K. B. Miller. (In preparation). A revision of the Southeast Asian whirligig beetle genus Porrorhynchus Laporte (Coleoptera: Gyrinidae: Gyrininae: Dineutini).
- Two new species of Dineutus Macleay, 1825 from Southeast Asia, with a review of the species of the Dineutus s. str. subgenus. Gustafson, Hájek, & Miller.
- A revision of the Gyrinidae of Madagascar. Gustafson, Bergsten, & Miller.
- A revision of the Gyrinus Geoffroy, 1762 of Venezuela. Gustafson, Short, & Miller.
- World Catalog of the Gyrinidae Latreille, 1810. Gustafson & Miller.
Grey Gustafson in the collection at the MNHN, Paris, France
Grey Gustafson, near Cascada Del Vino, Trujillo, Venezuela
Grey Gustafson, Costa Rica
Grey Gustafson at waterfall in Parque Nacional La Amistad, Chiriquí, Panama