Conostigmus pergandei ( Ashmead, 1893 )

Trietsch, Carolyn, Mikó, István, Ezray, Briana & Deans, Andrew R., 2020, A Taxonomic Revision of Nearctic Conostigmus (Hymenoptera: Ceraphronoidea: Megaspilidae), Zootaxa 4792 (1), pp. 1-155 : 72

publication ID	https://doi.org/ 10.11646/zootaxa.4792.1.1
publication LSID	lsid:zoobank.org:pub:326F6A15-216E-439A-AD59-3CDF7551D3F6
DOI	https://doi.org/10.5281/zenodo.5686584
persistent identifier	https://treatment.plazi.org/id/039687D1-FFC5-6549-9FA4-FB3D406FC3E7
treatment provided by	Plazi
scientific name	Conostigmus pergandei ( Ashmead, 1893 )
status

Treatment

Conostigmus pergandei ( Ashmead, 1893) View in CoL

Fig. 39 View FIGURE 39

Species Comments and History. Ashmead (1893) described this species from a single male specimen collected in Washington, D.C. The specimen is deposited in the USNM, and is point-mounted and in good condition except that the left antenna is missing the last two flagellomeres and the right antenna is missing last four flagellomeres. Masner and Muesebeck (1968) report the damages to the right antenna but not the left antenna, which must have happened since they examined the specimens.

The specimen has the sternaulus absent and the facial pit, preoccipital furrow, and mesopostscutellum present. The specimen is Dendrocerus -like in that the metapleural sulcus appears arched. The tip of the harpe is protruding and looks simple and blunt in shape, but we were not able to confirm any other male genitalia characters.

The two Nearctic species that most resemble this species are C. duncani and C. orcasensis , which both also have the facial pit, preoccipital furrow, and mesopostscutellum present and the sternaulus absent. Both species also have the harpe simple and blunt in shape. The metapleural sulcus can be straight or arched among specimens of C. duncani ; because C. pergandei (arched) and C. orcasensis (straight) are only known by single specimens, it is uncertain whether this intraspecific variation occurs in these species as well.

There appear to be differences in flagellomere length and antennal ratios between the three species, with C. pergandei having much shorter flagellomeres than the other two species, but we were not able to measure the type specimen of C. pergandei to compare. Conostigmus duncani and C. orcasensis can only be differentiated by male genitalia characters, and we were not able to dissect out the male genitalia of C. pergandei or locate any other specimens. We consider Conostigmus pergandei as a species inquirenda.

Material Examined. Lectotype male: USA: USNMENT01339755 ( USNM).