Key to Harpegnathos of the Philippines

This worker key is based on: General, D.E.M. 2016. A review of the ant genus Harpegnathos Jerdon, 1851 (Hymenoptera: Formicidae) in the Philippines, with the description of two new species. Halteres. 7:99-105.

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• Harpegnathos
• Philippines

1

• Dorsum of head reticulo-punctate; mandibles converging rather abruptly from attachments . . . . . 2

• Dorsum of head striate; mandibles converging gradually from attachments . . . . . 3

2

return to couplet #1

• Sculpture on dorsa of pronotum, mesonotum, propodeum and petiole reticulo-punctate; pilosity on body moderately abundant . . . . . Harpegnathos venator rugosus

• Sculpture on dorsum of pronotum with irregular striae diverging posteriorly; dorsum of mesonotum with irregular but subparallel striae; dorsum of propodeum coarsely punctuate; petiole with dorsal and lateral coarse punctation; pilosity on body sparse . . . . . Harpegnathos alperti

3

return to couplet #1

• First and second gastral tergite with coarse punctation over underlying punctulation; in full-face view, posterior margin of head straight; mandibles orange with infuscated base . . . . . Harpegnathos honestoi

• First and second gastral tergite with punctulation only; in full-face view, posterior margin of head shallowly emarginated; mandibles concolorous yellow . . . . . 4

4

return to couplet #3

• Antennal scape barely exceeds posterior margin of head by about the width of scape; propodeal declivity bounded by lateral carinae; pilosity on body sparse . . . . . Harpegnathos empesoi

• Antennal scape exceeds posterior margin of head by almost 1/3 length of scape; propodeal declivity not bounded by lateral carinae; pilosity on body moderately abundant . . . . . Harpegnathos macgregori