Hexaulax Cameron, 1910

Taxonomic History / Nomenclature
Hexaulax Cameron, 1910: 25. Type species: Hexaulax ruficeps Cameron, 1910 (monobasic)

Type locality: Indonesia, Java, Tennger Gbrg. 4000’; lectotype in The Natural History Museum, London (designated by Wharton 1987).

Treated as a synonym of Opius s. l. by Fischer (1964: 209, 1972) and Wharton (1987) and as a synonym of Phaedrotoma by Li et al. (2013).

The type species was renamed Opius indentatus Wharton, 1987 to avoid secondary homonymy with Opius ruficeps Wesmael (replacement name unnecessary if Therobolus and Hexaulax are retained as synonyms of different genus group names in the Opiinae).

Known only from a single specimen, but since that specimen is labelled as a co-type, and Cameron did not specify how many specimens he had, Wharton (1987) designated the specimen in The Natural History Museum as a lectotype. The primary types of Cameron’s (1910) work are all supposed to be deposited in the Museum fuer Naturkunde der Humboldt-Universitaet, Berlin (according to an editorial note by E. Strand accompanying the volume in which Cameron’s 1910 work appeared) so it is possible that a specimen of the type species may still be located there. However, it seems just as likely that Cameron was unable to return the type to Berlin.
Diagnosis and Relationships
A pin obscures certain important features in the lectotype, and the head is pinched, which may have mislead Cameron in his assessment of critical features such as the presence or absence of an occipital carina. The occipital carina is present laterally, absent dorsally, the labrum is exposed, the mandible lacks a basal tooth or lobe ventrally, the precoxal sulcus is sculptured, the propodeum has a strong median longitudinal carina and the surface is otherwise weakly wrinkled, the fore wing stigma is moderatedly stout, with r arising very slightly basad the midpoint, m-cu is postfurcal, and T1 lacks a dorsope.
1. Hexaulax ruficeps lectotype face...
2. Hexaulax ruficeps lectotype wings...
3.Hexaulax ruficeps lectotype
No referenced distribution records have been added to the database for this OTU.

There are no specimens currently determined for this OTU, or those specimens determined for this OTU are not yet mappable.

This page was assembled by Bob Wharton and Danielle Restuccia. It is part of a review of the genera of World Opiinae, conducted at Texas A&M University. We are particularly grateful to Xanthe Shirley, Andrew Ly, Patricia Mullins, Trent Hawkins, Lauren Ward, Cheryl Hyde, Karl Roeder, and Andrea Walker, who did nearly all of the imaging (together with Danielle) for this project. Matt Yoder and Istvan Miko provided guidance on databasing issues associated with our use of mx and HAO respectively. This project would not have been possible without the kindness of many curators at museums throughout the world who gave generously of their time to Bob Wharton and his students. In particular, I thank Henry Townes (deceased) and David Wahl (American Entomological Institute, Gainesville), Gordon Nishida (Bernice P. Bishop Museum, Honolulu), Norm Penny, and Bob Zuparko (California Academy of Sciences, San Francisco), Bill Mason (deceased), Mike Sharkey, Andrew Bennett, and Henri Goulet (Canadian National Collection, Ottawa), Paul Dessart (deceased) (Institut Royal des Sciences Naturelles de Belgique, Brussels), Marc De Meyer (Koninklijk Museum voor Midden-Afrika, Tervuren), Axel Bachmann (Museo Argentino de Ciencias Natureles, Buenos Aires), Eberhard Koenigsmann (deceased) and Frank Koch (Museum fuer Naturkunde der Humboldt-Universitaet, Berlin), J. Casevitz Weulersse and Claire Villemant (Museum National d’Historie Naturelle, Paris), James O’Connor (National Museum of Ireland, Dublin), Jenö Papp (National Museum of Natural History, Budapest), Kees van Achterberg (National Museum of Natural History, Leiden), Max Fischer, Herb Zettel, and Dominique Zimmermann (Naturhistorisches Museum, Wien), Per Persson and Lars-Åke Janzon (Naturhistoriska Riksmuseet, Stockholm), Ermenegildo Tremblay (Silvestri Collection, Portici), Erasmus Haeselbarth (Staatliche Naturwissenschaftliche Sammlungen Bayerns, Munich), Tom Huddleston and Gavin Broad (The Natural History Museum, London), Paul Marsh and Robert Kula (USDA Systematic Research Laboratory and US National Museum of Natural History, Washington, D. C.), Vladimir Tobias (deceased) and Sergey Belokobylskij (Zoological Institute, Academy of Sciences, St. Petersburg), and Roy Danielsson (Zoological Institute, Department of Systematics, Lund) for facilitating loans and general assistance associated with examination of holotypes and other material in their care. This work was supported largely by NSF/PEET DEB 0328922 and 0949027, with REU supplements 0723663, 1026618, 1213790, and 1313933 (to Wharton). Page last updated July, 2015. The material on this page is freely available, but should be acknowledged if used elsewhere.

This material is based upon work supported by the National Science Foundation under Grant Numbers DEB 9300517, DEB (PEET) 9712543, DEB (PEET) 0328922 with REU supplements 0723663 and 1026618 and DEB 0949027 with REU supplements 1213790 and 1313933. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.