Phymatinae


Insects in the subfamily Phymatinae are commonly called ambush bugs after their habit of lying in wait for prey, relying on their superb camouflage. Armed with raptorial forelegs, ambush bugs routinely capture prey ten or more times their own size. They form a subgroup within the assassin bugs.

Description

Phymatinae are long. In Phymata, the scutellum is triangular and shorter than the pronotum. In Macrocephalus, the scutellum is narrow and rounded and extends to the tip of the abdomen.
Phymatinae normally have a large fore femur and clubbed antennae. The forewing membranes sometimes lack distinct cells.
The antennae have four segments. There are two ocelli. The beak has three segments. The tarsi also have three segments. The rear half of the abdomen expands beyond the edges of the wings.

Etymology

The name Phymatinae is derived from the Greek phymata meaning "swollen", which presumably refers to the enlarged abdomen and femora.

Taxonomy

The subfamily Phymatinae was often given family-level status and this classification is still used in some textbooks. Based on cladistic analyses, however, ambush bugs are part of the family Reduviidae. They are a sister group of the Holoptilinae.
The Phymatinae include the following genera: