Jorgeus Gauld, 1997

Taxonomic History / Nomenclature
Jorgeus Gauld, 1997: 227-228. Type species: Jorgeus jimenezi Gauld, 1997. Original designation.
Only two species have been described:
Jorgeus genesisii Gauld, 1997
Jorgeus jimenezi Gauld, 1997

The above description is based on the original descriptions in Gauld (1997). I have seen a specimen from Brazil (American Entomological Institute) that is intermediate between Coelorhachis and Jorgeus, having some but not all of the characteristics used by Gauld to define Jorgeus relative to Coelorhachis.

Diagnosis and Relationships
A major defining feature is associated with posterior margin of the male subgenital plate, which is distinctly projecting medially. The vertex is also impressed and concave, and there is a median longitudinal carina on the pronotum. Jorgeus is otherwise similar to Coelorhachis. Gauld also noted differences in the fore wing areolet and the relative positions of the ventral ends of the hypostomal and occipital carinae. These features vary somewhat within Coelorhachis and will need to be examined more critically for their value in separating the two genera.
Clypeus bluntly rounded; without small lateral tooth or projection; ventral margin weakly to medially truncate; epistomal sulcus absent, clypeus not distinctly separated from face. Malar space distinct, 0.4-0.75 x basal width of mandible. Mandible with ventral tooth slightly longer than dorsal tooth. Lateral ocellus distinctly shorter than distance between ocellus and eye. First flagellomere with a small, irregular tyloid. Hypostomal carina separated from occipital carina, not joining the latter at or above base of mandible; occipital carina complete. Dorsal end of epicnemial carina extending close to but not reaching anterior margin of mesopleuron. Notaulus weakly impressed at extreme base, short, not extending posteriorly to level of tegula. Distinct u-shaped notch absent between propodeum and metanotum in lateral view; pleural carina complete; propodeal carinae absent anteriorly and posterior-medially; posterior transverse carina present laterally, as is apical branch of median lateral carina, median areola absent. Fore wing areolet present, large; stigma moderately broad, Rs+2r arising near middle of stigma. Hind wing with first abscissa of CU1 slightly to distinctly longer than 1cu-a. T1 varying from slender basally and only moderately broadening posteriorly to less slender and more distinctly broadening; without discrete dorsal carinae; basal depression at dorsal tendon attachment deep; dorsal-lateral carina essentially absent from spiracle to apex of T1; glymma broad, deep, extending into median basal depression, the two glymmae not meeting on each side posterior to basal depression. T2 thyridium absent. Ovipositor straight, short, with very broad, shallow, subapical depression. Posterior margin of male subgenital plate distinctly produced posteriorly near midline; male parameres short, broadly triangular, very slightly attenuate posteriorly.
Known only from Costa Rica.
No referenced distribution records have been added to the database for this OTU.
Biology / Hosts
Hosts are unknown; Gauld (1997) provides habitat and phenological data for the two species that he described from Costa Rica.

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 as part of a larger collaborative effort on the genera of Ctenopelmatinae. This work would not have been possible without the groundwork provided by Ian Gauld’s study of the Australian and Costa Rican faunas, and we are particularly grateful for his assistance in many aspects of this study. We also thank David Wahl for useful feedback throughout our study and to Gavin Broad for exchange of information on Perilissini. Matt Yoder provided considerable assistance with databasing issues, and our use of PURLs ( in this regard follows the example of their use in publications by Norm Johnson. This study was supported by the National Science Foundation’s PEET program under Grant No. DEB 0328922 and associated REU supplement no. DEB 0923134. Page last updated March, 2011.

This material is based upon work supported by the National Science Foundation under Grant Number DEB 0328922 with REU supplement DEB 0923134.
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.