Key to Yunodorylus

This worker key is based on: Borowiec, M.L. 2009. New species related to Cerapachys sexspinus and discussion of the status of Yunodorylus. Zootaxa. 2069:43-58.

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• Yunodorylus
• Cerapachys sexspinus species group (=Yunodorylus)

1

• Antennae 11-segmented. In side view, abdominal segment III (gastral I) is small and narrow compared to the following segment, with a rounded anterior face. Malaysia (Sarawak) . . . . . Yunodorylus paradoxus

• Antennae 12-segmented. In side view, abdominal segment III (gastral I) is not clearly narrowed, having a well differentiated, perpendicular anterior face of both posttergite and poststernite . . . . . 2

2

return to couplet #1

• Mandibles elongate with masticatory margins narrow and basal margin separated from anterior margin of clypeus by a wide gap at full closure. Malaysia (Sarawak) . . . . . Yunodorylus doryloides

• Mandibles triangular with basal margins not separated from anterior margin of clypeus by a wide gap at full closure . . . . . 3

3

return to couplet #2

• Sides of mesosoma and petiole with microreticulum easily recognizable at 50X magnification. Subpetiolar process long, curved, and claw-like. Vietnam . . . . . Yunodorylus eguchii

• Sides of mesosoma and petiole at 50X magnification appearing matted, not recognizable as microreticulum. Subpetiolar process smaller, with ventral margin drawn into a triangle directed slightly posteriorly. China (Yunnan) . . . . . Yunodorylus sexspinus