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Color scoring of eleven external morphological characters of adult W European and N American Phormia regina.
| Character | W Europe and N America |
|---|---|
| calypters | white |
| first spiraculum | white to yellow |
| thoracic dorsum | metallic green-bluish to dark green |
| scutellum | dark green |
| legs | black |
| abdomen | metallic green-bluish |
| facial ridge | red-brown |
| gena | black |
| postgena | black |
| first antennal segment | dark-brown to black |
| second antennal segment | white-grey |
