Anisopteromalus

Ruschka, 1912

of small in the , comprising that attack of stored-product . Species within this genus are , with females laying on larvae concealed inside grains or other substrates. The genus includes at least two morphologically similar , A. calandrae and A. quinarius, that require molecular or cytogenetic methods for reliable identification. Members of this genus have been investigated as agents against pests of stored grain.

Pronunciation

How to pronounce Anisopteromalus: //ˌæn.ɪˌsɒp.tɛr.oʊˈmeɪ.ləs//

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Identification

within Anisopteromalus are morphologically similar and difficult to distinguish based on external characters alone. A. calandrae and A. quinarius are with different numbers; accurate identification requires (mitochondrial COI sequences show ~12.6% divergence between these species) or examination of karyotype. A. calandrae has been reported with both wild- color and a recessive red eye color mutant in laboratory strains.

Habitat

Associated with stored grain environments, including warehouses, grain silos, and domestic settings with infested food products. Occurs in where are concealed within grain kernels, flour, or other stored products.

Distribution

Recorded from multiple continents including Asia (Vietnam, Korea), North America (Mexico, Belize, El Salvador), and Europe (Denmark, Ireland). Specific distribution varies by : A. calandrae reported from Mexico (Hidalgo, Veracruz) and Vietnam; A. quinarius recorded from El Salvador and Belize; A. apiovorus first recorded in Korea.

Host Associations

Lasioderma serricorne - of Primary ; females lay on hidden inside grains or nests, preferring 4th
Sitophilus zeamais - of Documented in Mexico; stages in wheat and maize
Callosobruchus chinensis - alternative New record for of A. calandrae; laboratory at level ()
Rhyzopertha dominica - of in stored rice systems

Behavior

Females locate using olfactory cues from hosts and stored grain. is restricted to host larvae concealed within substrates; females do not lay on exposed hosts. Typically one egg per host larva, though 2-5 eggs per host has been observed. Oviposition activity is concentrated in the first half of lifespan, with peak daily occurring around day 9.

Ecological Role

of stored-product ; functions as a and potential agent in of grain facilities.

Human Relevance

Investigated and utilized as a agent for management of stored grain pests including the (), maize (Sitophilus zeamais), and lesser (Rhyzopertha dominica). Laboratory studies have examined malathion- strains for potential compatibility with treatments. Subject of genetic studies including inheritance of and identification of miRNAs conserved across .

Similar Taxa

Choetospila elegans of stored ; competes with A. calandrae for and shows differences in penetration efficacy through wheat substrate
Theocolax elegansCo-occurring of Sitophilus zeamais in stored grain environments; similar and range