Hexatoma

Key to the known pupae of Hexatoma View in CoL of Mongolia

1. Cephalic crest consists of one pair of horns ( Fig. 59 View FIGURES 58 – 62 ). Sheaths of legs reach posterior margin of third abdominal segment ( Fig. 58, 59 View FIGURES 58 – 62 ).................................................... Hexatoma ( Hexatoma) nubeculosa (Burmeister, 1829) View in CoL

- Cephalic crest consists of two pairs of horns ( Fig. 34 View FIGURES 34 – 38 ). Sheaths of legs shorter, ending before posterior margin of third abdominal segment ( Fig. 36 View FIGURES 34 – 38 , 46 View FIGURES 46 – 50 )................................................................................ 2

2. Sheaths of legs reach two thirds of third abdominal segment ( Fig. 46 View FIGURES 46 – 50 ). Antennal sheath of male very long, almost reaching to tips of the legs. Antennal sheath of female shorter, reaching tips of wings.. Hexatoma ( Eriocera) ussuriensis Alexander, 1934 View in CoL

- Sheaths of legs shorter, reaching to the middle of third abdominal segment ( Fig. 36 View FIGURES 34 – 38 ). Antennal sheaths of male shorter, reaching to tips of wings. Female pupa unknown.......................... Hexatoma ( Eriocera) stackelbergi Alexander, 1933 View in CoL