Deinopsini
James S. Ashe (1947-2005) and Stylianos Chatzimanolis
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close boxIntroduction
The Deinopsini are a small group of teardrop-shaped basal aleocharines that are characteristic inhabitants of marshes, bogs, pond and stream edges and similar riparian habitats. Deinopsine taxa occur in the Nearctic, Palearctic, Neotropical, Ethiopian, Oriental, and Australian faunal regions.
Characteristics
Deinopsines are similar to members of the Gymnusini, but they may be recognized by the combination of:
- very strongly deflexed head;
- lack of a tergal gland opening on abdominal tergum VII;
- pectinate edge of abdominal segments III-V;
- distinctive mouthparts (see Klimaszewski 1979 and Ashe 2002 for details);
- male tergum IX divided;
- head without setigerous pores;
- 2-2-2, 3-3-3 or 5-5-5 tarsal segmentation.
The three genera are superficially very similar, but they differ markedly in structure of the mouthparts, tarsi and genitalia.
Discussion of Phylogenetic Relationships
Klimaszewski (1979) provided a reconstructed phylogeny of the genera of the Deinopsini, and later (1980, 1982, 1985a,b 1992) he described more species and supplemented his revision. He proposed that the tribe is monophyletic based on the presence of a divided male tergum IX, and female sternum IX with 2 lobes and without valvulae. Among the four genera included in the tribe, he proposed that Metadeinopsis was the basal lineage and that Adinopsis and Deinopsis were sister groups based on derived features of the male copulatory organ and the presence of an elongate apical portion of tergum X in both males and females of these latter two genera (see Klimaszewski 1979 for details).
Recently, Ashe (2002) described Allodinopsis from Central America as a new genus. Though Ashe (2002) pointed out the striking similarities between Allodinopsis and Metadeinopsis, and hypothesized that they are very closely related, the phylogenetic placement of Allodinopsis has not been rigorously examined.
References
Ashe, J. S. 2002. Allodinopsis, new genus of Deinopsine Aleocharinae from Cetral America, and a new species of Metadeinopsis Klimaszewski 1979 (Staphylinidae: Aleocharinae: Deinopsini). J. Kans. Entomol. Soc. 75(2): 61-72.
Klimaszewski, J. 1979. A revision of the Gymnusini and Deinopsini of the World. Canada Agriculture monograph No. 25. 169 pp.
Klimaszewski, J. 1980. Two new species of Deinopsini from the Afrotropical and Nearctic regions, with notes on two other species of this tribe (Coleoptera, Staphylinidae). Polskie-Pismo-Entomologiczne. 50(1): 109-120.
Klimaszewski, J. 1982. A revision of the Gymnusini and Deinopsini of the World. Sup 2. Can. Entomol. 114(4): 317-335.
Klimaszewski, J. and F. Genier. 1985. A revision of the Gymnusini and Deinopsini of the World. Sup 3. Colepts. Bull. 39(1): 60-66.
Klimaszewski, J. 1985. Revision of the Gymnusini and Deinopsini of the world (Coleoptera: Staphylinidae). Supplement 4. New distribution data and description of female Adinopsis bicornis. Ent. News 96(4):142-144.
Klimaszewski, J. and J. H. Frank. 1992. New distributional data for New World Gymnusini and Deinopsini, with description of a new species (Coleoptera: Staphylinidae, Aleocharinae). Supplement 5. Coleopts. Bull. 46(3): 242-249.
Title Illustrations
| Scientific Name | Deinopsis illinoisensis |
|---|---|
| Location | Kansas, U.S.A. |
| Size | length 3.2 mm |
| Copyright |
© 1997 James S. Ashe (1947-2005)
|
| Scientific Name | Adinopsis sp. |
|---|---|
| Location | Ecuador |
| Copyright |
© James S. Ashe (1947-2005)
|
| Scientific Name | Metadeinopsis brunnea |
|---|---|
| Location | Paraguay |
| Size | length 3.6 mm |
| Copyright |
© 1997 James S. Ashe (1947-2005)
|
| Scientific Name | Allodinopsis howdeni |
|---|---|
| Location | Costa Rica |
| Size | length 2.6 mm |
| Copyright |
© 1997 James S. Ashe (1947-2005)
|
About This Page
Development of this page made possible by National Science Foundation PEET grants DEB 95-21755 and DEB 99-78110 to James S. Ashe.
All images on this page copyright © 1997-2003 James S. Ashe.
James S. Ashe (1947-2005)
University of Kansas, Lawrence, Kansas, USA
Stylianos Chatzimanolis
University of Tennessee at Chattanooga
Page copyright © 1997 James S. Ashe (1947-2005) and Stylianos Chatzimanolis
All Rights Reserved.
- First online 29 August 1997
- Content changed 06 November 2003
Citing this page:
Ashe (1947-2005), James S. and Stylianos Chatzimanolis. 2003. Deinopsini. Version 06 November 2003. http://tolweb.org/Deinopsini/9815/2003.11.06 in The Tree of Life Web Project, http://tolweb.org/
