Holopyga Dahlbom

Lucena, Daercio A. A., Santos-Neto, Pedro E., Zanella, Fernando C. V. & Almeida, Eduardo A. B., 2022, Taxonomic review of the elampine cuckoo wasps from northeastern Brazil (Hymenoptera: Chrysididae), with the description of three new species, Zootaxa 5213 (3), pp. 201-235 : 228

Key to species of Holopyga Dahlbom from northeastern Brazil

Characters are applicable for both genders, except when otherwise stated.

1. Inner margin of tarsal claw with single subsidiary tooth; Rs&M 2 v smoothly curved submedially; S1–S2 dark brown; smallsized, body length shorter than 5 mm ............................................... Holopyga piliventris Ducke

- Inner margin of tarsal claw with two or more subsidiary teeth; Rs&M 2 v abruptly bent submedially; S1–S2 metallic green or blue; large-sized, body length longer than 6 mm ............................................................ 2

2. Inner margin of tarsal claw with two subsidiary teeth; gena longitudinally ridged; lateral margin of pronotum bordered with discrete carina; male S3 dark brown; head higher than broad, high 1.2× breadth; F1 brown; tegula brown.......................................................................................... Holopyga lunae Lucena sp. nov.

- Inner margin of tarsal claw with three subsidiary teeth; gena without longitudinal ridge; lateral margin of pronotum lacking carina; male S3 bluish green; head broader than height, breadth 1.4× height; F1 bluish green; tegula greenish brown.................................................................................. Holopyga iheringi du Buysson