Perillus circumcinctus

Stål, 1862

Perillus circumcinctus is a in the , to North America. It is one of several predatory in the Perillus, closely related to the well-studied (Perillus bioculatus). Like other predatory pentatomids, it hunts using to inject digestive and consume liquefied tissues. The species has been documented from Vermont and other parts of North America.

Biologia Centrali-Americana - Perillus circumcinctus by Bale & Danielsson; Bannwarth, Th.; Cambridge Scientific Instrument Company; Godman, Frederick Du Cane; Hanhart; Horman-Fisher, Maud; Knight, H.; Mintern Bros.; Purkiss, W.; Salvin, Osbert; Saunders, G. S.; Schlereth, M. v.; Sharp, M. A.; Taylor & Francis; Wilson, Edwin. Used under a Public domain license.

140134253 Perillus circumcinctus by Reiner Jakubowski. Used under a CC BY-SA 4.0 license.

Biologia Centrali-Americana (8272529098) by Bale & Danielsson; Bannwarth, Th.; Cambridge Scientific Instrument Company; Godman, Frederick Du Cane; Hanhart; Horman-Fisher, Maud; Knight, H.; Mintern Bros.; Purkiss, W.; Salvin, Osbert; Saunders, G. S.; Schlereth, M. v.; Sharp, M. A.; Taylor & Francis; Wilson, Edwin. Used under a Public domain license.

Pronunciation

How to pronounce Perillus circumcinctus: //pɛˈɹɪlʊs ˌsɜːkəmˈsɪŋktəs//

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Identification

Distinguished from similar by specific markings and body proportions. Closely resembles Perillus bioculatus but differs in pattern details. As with other Perillus , have the characteristic shield-shaped body typical of , with a prominent triangular . Accurate identification requires examination of specific morphological features not detailed in available sources.

Images

Distribution

North America, with confirmed records from Vermont, United States. The occurs in the Nearctic region.

Diet

Specialized of , as documented for the . Feeding occurs via piercing-sucking : is immobilized with toxic saliva, digestive are injected to liquefy tissues, and nutrient-rich fluids are extracted.

Host Associations

Chrysomelidae - Specialized to upon in this

Life Cycle

occurs in early summer. Details of , nymphal, and stages are not specifically documented for this , though related Perillus species produce barrel-shaped eggs in clusters and have multiple nymphal .

Behavior

Actively hunts rather than waiting in ambush. Has been observed using olfactory cues—specifically volatile compounds released by -damaged plants—to locate prey .

Ecological Role

that contributes to of . As a specialized predator of , it may help regulate damage to vegetation.

Similar Taxa

Perillus bioculatusCongeneric with similar predatory and appearance; both are orange-and-black that feed on and other . P. bioculatus is more extensively studied and widely distributed.
Podisus maculiventrisAnother predatory with similar hunting and ecological role; is a rather than .

More Details

Taxonomic note

The Perillus contains several predatory that have been subject to taxonomic confusion. P. circumcinctus is less frequently encountered in entomological literature than P. bioculatus, which has been extensively studied as a agent.

Research context

While detailed studies of P. circumcinctus specifically are sparse, the Perillus has been well studied for its use of volatile cues to locate . Research on P. bioculatus demonstrates that these detect sesquiterpenoid compounds released by potato plants damaged by , using these as olfactory beacons to find prey.