Pneumoroidea

Definition

A monotypic superfamily of Orthoptera containing only the family Pneumoridae, the bladder grasshoppers. Distinguished by extreme sexual dimorphism and the unique abdominal inflation in adult males, which functions as a resonating chamber for amplified acoustic signaling. Endemic to sub-Saharan Africa with highest diversity in southern Africa.

Etymology

From Greek pneuma (breath, air, bladder) + -oidea (resembling), referring to the inflated, bladder-like abdomen of males.

Example

The superfamily Pneumoroidea is represented solely by Pneumoridae, whose males of species such as Bullacris membracioides dramatically inflate their abdomens to produce loud, species-specific calls audible over long distances in African savanna habitats.

Related Terms

• Pneumoridae
• Orthoptera
• Caelifera
• Sexual dimorphism
• stridulation
• tympanal organ
• resonance chamber

Usage Notes

As a monotypic superfamily, Pneumoroidea is redundant with Pneumoridae in practical identification but is retained in formal classification to reflect the deep divergence of bladder grasshoppers from other short-horned grasshoppers. The rank superfamily is sometimes collapsed in simplified treatments.