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Phymata americana show sexual dimorphism in size and color pattern. [ 9 ] [ 11 ] [ 13 ] [ 14 ] [ 15 ] Males tend to be darker than females, although only as adults. [ 13 ] Additionally, the degree of coloration is condition dependent , with increased food availability resulting in darker males and females. [ 13 ]
In Phymata, the scutellum is triangular and shorter than the pronotum. In Macrocephalus, the scutellum is narrow and rounded, extending to the tip of the abdomen. [2] Phymatinae normally have a large fore femur and clubbed antennae. The forewing membranes sometimes lack distinct cells. [3] The antennae have four segments. There are two ocelli.
Phymata is a genus of assassin bugs belonging to the family Reduviidae, subfamily Phymatinae, [1] commonly called jagged ambush bugs. They can be a variety of colors, with their coloring helping them camouflage with the plants they live on.
Adults of Phymata crassipes can reach a length of about 7–9 mm. The body appear ornamented with some extrusions. Their triangular scutellum is shorter than a pronotum without prominent tubercles. They possess functional wings. They have clubbed antennae and enlarged fore femora and abdomen.
However, the antenna does not hang free on the membrane, but pivots on a rigidly sprung projection from the rim of the torulus. That projection on which the antenna pivots is called the antennifer . The whole structure enables the insect to move the antenna as a whole by applying internal muscles connected to the scape.
Some moths have knobbed antennae akin to those of butterflies, such as the family Castniidae. [18] Antennae are the primary organs of olfaction (smell) in Lepidoptera. The antenna surface is covered with large numbers of olfactory scales, hairs, or pits; as many as 1,370,000 are found on the antennae of a monarch. Antennae are extremely ...
Phymata pennsylvanica, known generally as the Pennsylvania ambush bug or Pennsylvania jagged ambush bug, is a species of ambush bug in the family Reduviidae. It is found in North America. [1] [2] [3] It is known to prey on a common hoverfly, Syritta pipiens. [4]
Phymata fasciata is a species of ambush bug in the family Reduviidae. It is found in Central America and North America. [1] [2] [3] Feeding on a Cerceris wasp. Subspecies