Austroplebeia

Engel, Michael S., Herhold, Hollister W., Davis, Steven R., Wang, Bo & Thomas, Jennifer C., 2021, Stingless bees in Miocene amber of southeastern China (Hymenoptera: Apidae), Journal of Melittology 2021 (105), pp. 1-83 : 35

Key to Subgenera of Austroplebeia

(worker caste)

1. Malar space short, one-half or less of flagellar diameter; basal vein (1M) distad 1cu-a; 6 distal hamuli ...................................................... Austroplebeia Moure , s.str.

—. Malar space of moderate length, as long as flagellar diameter ( Fig. 54 ); basal vein (1M) confluent with 1cu-a ( Fig. 62 ); 5 distal hamuli ........................................ ...................................................................................... Anteplebeina Engel , n. subgen.

Figures

Figures 54–58. Worker (holotype, NIGP 176057) of Austroplebeia (Anteplebeina) fujianica, new species, µCT scans (yellow highlights indicate areas of yellow maculation; green indicates area of keirotrichiate zone). 54. Facial view (note malar space in relation to diameter of flagellomeres II + III). 55. Dorsal habitus. 56. Prolateral view of metatibia and metatarsus. 57. Retrolateral view of metatibia and metatarsus. 58. Cross-section of metatibia showing gently sloping clivulus.

Figures 59–62. Details of workers of Austroplebeia (Anteplebeina) fujianica, new species. 59. Ret- rolateral view of metatibia and metatarsus of SEMC F002513. 60. Retrolateral view of metatibia and metatarsus of NIGP 176057. 61. Left view of head and mesoscutal dorsum of NIGP 176057. 62. Forewing of NIGP 176057.