. Bulletin of the British Museum (Natural History) Entomology. 322 B. BOLTON dorsally usually with at least one suture; if sutures absent, then the second gastral segment is strongly vaulted ...... PONERINAE (p. 323) Apex of gaster with a circular acidopore formed from the hypopygium, this structure often projecting as a nozzle and fringed with setae. Occasionally the orifice of the acidopore is hidden by a projection of the pygidium, in which case the pronotum, petiole or both armed with spines. Petiole usually a scale or node, rarely reduced FORMICINAE (p. 329) Acidopore absent, the gaster t
. Bulletin of the British Museum (Natural History) Entomology. 322 B. BOLTON dorsally usually with at least one suture; if sutures absent, then the second gastral segment is strongly vaulted ...... PONERINAE (p. 323) Apex of gaster with a circular acidopore formed from the hypopygium, this structure often projecting as a nozzle and fringed with setae. Occasionally the orifice of the acidopore is hidden by a projection of the pygidium, in which case the pronotum, petiole or both armed with spines. Petiole usually a scale or node, rarely reduced FORMICINAE (p. 329) Acidopore absent, the gaster terminating in a transverse slit bounded by the pygidium and hypopygium. Petiole usually reduced and overhung by the first gastral seg- ment, rendering the petiole invisible in dorsal views. DOLICHODERINAE (p. 329) Pygidium impressed and armed laterally or posteriorly with a row of short spines or denticles (which may be difficult to see due to setal development) CERAPACHYINAE (p. 325) Pygidium not impressed, not armed with teeth or denticles. ..... 7 Frontal carinae vertical, failing to cover the antennal insertions; eyes absent . 8 Frontal carinae not vertical, totally or partially covering the antennal insertions; eyes usually present ............ 9 Antennae 10-segmented; genae carinate. Larger ants with head width greater than 0-25 mm DORYLINAE (p. 328) Antennae 12-segmented; genae not carinate. Minute ants with head width less than 0-25 mm LEPTANILLINAE (p. 328) claw—. mandible . gena funiculus pronotum mesonotum propodeum petiole gaster Fig. 1. Worker of Brachyponera senaarensis (Mayr), to illustrate some terms used in the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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