Lorenzopius: Wharton et al. (2012): 32-34, 62-68 (review and redescription).
Type locality of calycomyzae: Cordoba, Argentina. Holotype female in National Museum of Natural History, Leiden.
Valid genus (van Achterberg and Salvo 1997)
Lorenzopius: Wharton et al. (2012): 32-34, 62-68 (review and redescription).
Type locality of calycomyzae: Cordoba, Argentina. Holotype female in National Museum of Natural History, Leiden.
Valid genus (van Achterberg and Salvo 1997)
Lengthy descriptions (Fischer 1963, 1964, 1979, van Achterberg and Salvo 1997) and some redescriptions (Fischer 1977) are available for the described species of Lorenzopius and van Achterberg and Salvo (1997) provide a useful key to the species of the calycomyzae species group. See also the species pages for Lorenzopius calycomyzae, Lorenzopius tubulatus, and Lorenzopius euryteniformis.
Lorenzopius and Tubiformopius are both characterized by having a tubular petiole with a long S1 which appears fused to T1 (Fig. 2). In the material available, S1 is longer in Lorenzopius than in Tubiformopius but there are more significant differences in the shape of the mandible, wing venation, and mesoscutal sculpture, as noted above in the section discussing genus group characters. Lorenzopius also shares many features with Eurytenes (Stigmatopoea), but the petiole is less tubular in the latter, with a distinctly shorter S1 that is clearly separated by membrane from T1.
Neither van Achterberg and Salvo (1997) nor Fischer (1998) mentioned the sternite in their descriptions, focusing instead on the tubular tergite, closed ventrally. What is most distinctive about Lorenzopius and Tubiformopius, however, is the length of S1 and its apparent fusion with T1. The presence of a prominent S1 is an unusual feature in the Opiinae and it is therefore not surprising that two genus group names have been proposed for species with this characteristic. The vast majority of opiine species have a very short basal sclerite, clearly separated by membrane from the tergite, but S1 is often difficult to see without dissection.
There are no specimens currently determined for this OTU, or those specimens determined for this OTU are not yet mappable.
Imaging was considerably facilitated by Trent Hawkins, Cheryl Hyde, and Lauren Ward. Patricia Mullins and Matt Yoder provided assistance with databasing. I am particularly grateful to Kees van Achterberg (National Museum of Natural History, Leiden), Max Fischer and Dominique Zimmermann (Naturhistorisches Museum Wien), and David Wahl (American Entomological Institute, Gainesville) for extended loans of type specimens in their care. Ana DalMolin provided notes on the holotype of L. sanlorenzensis during her visit to the Hungarian Natural History Museum in Budapest.
This material is based upon work at Texas A&M University supported by the National Science Foundation under Grant Numbers DEB 0949027 and DEB 0328922 and associated REU supplements 1213790 and 0723663 plus 1026618. 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.