Argochrysis armilla

Bohart, 1982

Argochrysis armilla is a cleptoparasitic in the Chrysididae that specializes in attacking ground-nesting sphecid wasps of the Ammophila, particularly A. dysmica. This has evolved sophisticated behavioral adaptations to overcome the temporal and spatial defenses of its , including visual location of digging hosts, spatial learning of nest locations, and surveillance of multiple nests during host absence. Its foraging strategy creates strong on host nesting , favoring delayed provisioning and dispersed nest placement. The species was described by Bohart in 1982 and remains poorly known from a natural history perspective beyond its host interactions.

Pronunciation

How to pronounce Argochrysis armilla: //ˌɑːrɡoʊˈkrɪsɪs ɑːrˈmɪlə//

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Habitat

Associated with open, sandy ground where construct subterranean nests; specifically observed in areas where Ammophila dysmica excavates nests in soil.

Host Associations

Ammophila dysmica - primary Ground-nesting sphecid ; nests are parasitized during provisioning stage
Ammophila spp. - Solitary ground-nesting in the Sphecidae

Behavior

Visually locates actively excavating nests; learns and remembers locations of discovered nests; maintains surveillance on multiple nests simultaneously during host absence; returns to oviposit when hosts return with provisions. Activity is partially asynchronous with hosts, with reduced nest discovery during early morning and late afternoon. Shows rapidly decelerating recruitment to nests under excavation, creating spatial in low- nesting areas.

Ecological Role

acting as a significant on ; favors evolution of delayed nest provisioning and dispersed nesting patterns in host .