second segment forms the narrow petiole. Some ants have an additional postpetiole segment, and the remaining segments form the bulbous gaster. The petiole...

with abdominal segment III on most ants, but some make a constricted postpetiole out of segment III, in which case the gaster begins with abdominal segment...

petiole and postpetiole. The petiole is "hatchet-like", with a node that is almost rectangular in profile and higher than the postpetiole. The antennae...

spiders. The plump portion of the abdomen posterior to the petiole (and postpetiole in the Myrmicinae) is called the gaster. The structure of the petiole...

blackish-brown. The mandibles are broader, the clypeus is covered in hair and the postpetiole bears very short hair that are either greyish or brown. "Most Dangerous...

clypeus and antennae. Its head, mesonotum and parts of its thorax, postpetiole and gaster are black. In contrast to other species, the mandibles are...

(the mandibles) to attach itself to the waist (between the petiole and postpetiole) of medium sized ant workers of the species Eciton mexicanum. N. kronaueri...

may be subtruncate. The postpetiole is large and broad, and in the larger workers, it is broader than its length. The postpetiole tends to be less broad...

scale". Formicine ants have a single node-like or scale-like petiole (postpetiole entirely lacking) and the apex of the abdomen has a circular or U-shaped...

can be discerned from related ant genera by a postpetiole with a complete tergosternal fusion, a postpetiole-gaster articulation shifted ventrally on the...