Ceraeochrysa claveri

(Navás, 1911)

trash bug (larval stage)

A green lacewing in the Chrysopidae, Ceraeochrysa claveri is a with established value in of agricultural pests. Larvae are "trash carriers" that construct camouflage packets using assorted materials including lichen, plant trichomes, and notably the wax of and other insects. The has been documented incorporating live mealybug nymphs into these packets, representing the first recorded instance of active placement of live prey onto the larval packet. feed on pollen and may contribute to pollination. The species shows high genetic diversity across agroecosystems and is compatible with certain including Bacillus thuringiensis serovar aizawai.

Pronunciation

How to pronounce Ceraeochrysa claveri: //ˌsɛriəʊˈkraɪsə ˈklævəri//

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Identification

Larvae distinguished by packet construction : using to scoop and flip materials onto the back, where they are held by tufts of long hairs. Packet composition can include mealybug wax, lichen, plant trichomes, wood fragments, and live mealybug nymphs. Cocoons incorporate collected debris and wax. require specimen examination for definitive identification; larval identification to typically requires rearing to adulthood.

Habitat

Agricultural crops including Citrus sinensis (orange), Saccharum officinarum (sugarcane), Passiflora edulis (passion fruit), and Zea mays (corn); agroecosystems of Southeast Brazil and other regions.

Distribution

Brazil (states: Amazonas, Bahia, Ceará, Goiás, Minas Gerais, Mato Grosso, Pará, Paraíba, Pernambuco, Rio de Janeiro, Rio Grande do Norte, Santa Catarina, São Paulo); Caribbean; Middle America; North America; South America.

Diet

Larvae are of insect pests including (Nipaecoccus nipae), Diatraea saccharalis , aphids, mites, and . feed on pollen.

Host Associations

  • Nipaecoccus nipae - prey (mealybug wax and nymphs used for packet construction; and nymphs consumed)First documented instance of larva actively placing live mealybug nymphs onto packet; from mealybug can gum up lacewing mouthparts
  • Diatraea saccharalis - prey ( consumed by larvae)Used as food source in laboratory studies
  • Citrus sinensis - crop
  • Saccharum officinarum - crop
  • Passiflora edulis - crop
  • Zea mays - crop

Life Cycle

Complete : , larva, pupa, . Larval stage has incomplete with nonfunctional ; metabolic residues stored in until adult when digestive system becomes fully functional. Larvae spin cocoons that incorporate collected debris and wax; documented cocoon-to- time has been recorded.

Behavior

Larvae construct camouflage packets by scooping material with and flipping backwards to deposit onto back. First documented video record of using mealybug wax in packet construction. First documented observation of active placement of live mealybug nymphs onto packet, with potential for phoretic of . When contacting mealybug fluid (exuded from ), larvae show strong distressed reaction and retreat to wipe mouthparts on substrate. Voracious feeding: can drain first-instar mealybug nymph in less than 45 seconds.

Ecological Role

agent () of agricultural insect pests including , aphids, mites, and . Potential through pollen feeding. Provides beneficial service in . High among suggests effective and capacity in agroecosystems.

Human Relevance

Valued agent in for crops of economic importance. Compatible with Bacillus thuringiensis serovar aizawai , supporting combined use strategies. Susceptible to -based biopesticides and Cymbopogon nardus (citronella) , which cause developmental and damage. Used as model organism for studying selectivity of biopesticides on non-target beneficial insects.

Similar Taxa

  • Ceraeochrysa cinctaSympatric congeneric in Southeast Brazil agroecosystems; distinguished by genetic and morphological differences requiring specimen examination
  • Ceraeochrysa cubanaSympatric congeneric in Southeast Brazil agroecosystems; distinguished by genetic and morphological differences requiring specimen examination
  • Other green lacewing larvae (Chrysopidae)Larval trash-carrying is widespread in ; identification requires rearing to adulthood or genetic analysis

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Sources and further reading