Dioprosopa clavata

(Fabricius, 1794)

Four-speckled Hover Fly

Dioprosopa clavata is a Neotropical hoverfly (Diptera: Syrphidae) and the type of Dioprosopa. feed on nectar and pollen, while larvae are aphidophagous that also attack spittlebugs and other hemipteran pests. The species provides dual services as both a and agent in natural and agroecosystems, including citrus orchards. Climate change projections indicate substantial habitat loss by 2100, with range contractions in tropical lowlands and modest shifts toward cooler, higher-elevation refugia.

Dioprosopa clavata by (c) Catherine C. Galley, some rights reserved (CC BY), uploaded by Catherine C. Galley. Used under a CC-BY license.

Dioprosopa clavata larva 00001 by Juan Carlos Fonseca Mata. Used under a CC BY-SA 4.0 license.

Dioprosopa clavata larva 0100 by Juan Carlos Fonseca Mata. Used under a CC BY-SA 4.0 license.

Pronunciation

How to pronounce Dioprosopa clavata: //ˌdaɪ.oʊ.proʊˈsoʊpə kləˈvɑːtə//

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Images

Habitat

Tropical and subtropical regions of the Americas; occurs in both natural and agroecosystems. Favors areas with topographic heterogeneity that provides microclimatic buffering. Projected to shift toward higher-elevation, cooler refugia under climate change scenarios.

Distribution

Widely distributed across tropical and subtropical regions of the Americas, including northern South America, Central America, and other Neotropical areas. Near-term projections (2021–2040) suggest stability in 88–89% of current range, but dramatic contractions expected by late century (2081–2100), particularly in tropical lowlands of northern South America and Central America, with modest poleward and upslope gains.

Diet

feed on nectar and pollen, including composites such as Tridax procumbens. Larvae are aphidophagous and attack spittlebugs (Cercopoidea) and other hemipteran pests of economic importance.

Host Associations

Tridax procumbens - food source (nectar/pollen)coatbuttons/tridax daisy, a composite plant
aphids - larval preygeneral
spittlebugs - larval preyCercopoidea
other hemipteran pests - larval preyeconomic pests in agroecosystems

Life Cycle

Third-instar larva and have been redescribed with diagnostic cuticular and cephalopharyngeal skeletal characters. Larvae are aphidophagous .

Behavior

Performs long-distance seasonal movements that redistribute pollination and pest-control services across regions. Active under environmental conditions when bees are inactive, including of temperature, solar radiation, humidity, cloud cover, and wind variations.

Ecological Role

Key contributor to functioning through dual services: mediate pollination mutualisms for crops including onion, oilseed rape, strawberry, sweet pepper, and citrus; larvae provide top-down of sternorrhynchous hemipterans in agroecosystems. Serves as a bioindicator of integrity and landscape quality.

Human Relevance

Important for in agricultural systems, particularly citrus and other crops. Provides pollination services for multiple crop . Climate change threatens to reduce its range and contributions by 2100.