Antennal sensilla analyses as useful tools in the revision of thesweat-bee subgenus Corynura (Callistochlora) Michener(Hymenoptera: Halictidae)

GONZALEZ-VAQUERO ROCIO A.; GALVANI GERÓNIMO L.

ZOOLOGISCHER ANZEIGER

ELSEVIER GMBH

Año: 2016 vol. 262 p. 29 - 42

0044-5231

tAlthough many studies have analyzed the physiology of the antennal sensilla, only a few have used themfor systematics. If the abundance and distribution of the different types of sensilla are constant withinspecies, these characters may be used as additional tools in wild bee systematics, especially for theidentification of cryptic species. To assess this, we studied the antennal sensilla of the subgenus Corynura(Callistochlora) Michener, which comprises species frequently collected in Chile and the ArgentineanPatagonia. Although the species of C. (Callistochlora) play an important role in the pollination of wildand cultivated plants, there are no useful keys to identify them. Here we provide a comparative study ofantennal sensilla, as well as a detailed morphological revision of the species, including characters of thegenital capsule and the hidden sterna. The sensilla have been important in the resolution of the subgenus,especially in the delimitation of male species. Three valid species are recognized: Corynura aureoviridisFriese, revalidated name, C. chloris Spinola and C. prothysteres Vachal. The male of C. aureoviridis andthe female of C. prothysteres are described for the first time. Lectotypes are designated for four names.Synonyms, notes on variation within species, images, distributional data and a key to the species areprovided. The study of the antennal sensilla as a potential tool in wild bee systematics is discussed