Homalinotus coriaceus

Homalinotus coriaceus
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Arthropoda
Clade: Pancrustacea
Class: Insecta
Order: Coleoptera
Suborder: Polyphaga
Infraorder: Cucujiformia
Superfamily: Curculionoidea
Family: Curculionidae
Genus: Homalinotus
Species:
H. coriaceus
Binomial name
Homalinotus coriaceus
Gyllenhal, 1836
H. coriaceus feeding on the floral peduncle

Homalinotus coriaceus, the black coconut bunch weevil, is a species of weevil belonging to the family Curculionidae. This species is found in Brazil and is considered a pest because it feeds on cultivated coconuts.[1][2]

Ecology

Due to the damage H. coriaceus can inflict on coconut trees, it is considered a major pest in Brazil. Larvae will tunnel into the peduncles of the coconut tree, feeding on sap.[3] Likewise, adults will often damage the flowers and fruit tissues.[4] H. coriaceus has been estimated to have reduced coconut production in Brazil by around 50%.[5]

Morphology

Black coconut bunch weevils are black and range between 25 and 30 millimetres (0.98 and 1.18 in) long with a rostrum of approximately 8 millimetres (0.31 in),[6][7] the mature larvae are white, curved, bigger than the adult-beetle with 40 to 50 millimetres (1.6 to 2.0 in) in length and display a rust-tinted head.[8] The eggs laid on the floral peduncle are white, smooth, and elongated.[7] This species has little to no sexual dimorphism, where females are a bit larger than males and have two subtle indentations on the pronotum.[8]

References

  1. ↑ "Homalinotus coriaceus L.Gyllenhal, 1836". www.gbif.org. Retrieved 2023-09-08.
  2. ↑ Sarro, Fernanda B.; Crocomo, Wilson B.; Ferreira, Joana M. S. (2004). "Aspectos da biologia e morfologia da broca do pedúnculo floral do coqueiro, Homalinotus coriaceus (Gyllenhal) (Coleoptera: Curculionidae)". Neotropical Entomology (in Portuguese). 33: 7–12. doi:10.1590/S1519-566X2004000100003. hdl:11449/5815. ISSN 1519-566X.
  3. ↑ Lima, Maria do Livramento Ferreira; Ferreira, Ubirany Lopes (2021), "Estudo Comportamental de Linhagens de Metarhizium Em Diferentes Meios de Cultura", Manejo sustentável de pragas e doenças agrícolas, Atena Editora, pp. 9–17, doi:10.22533/at.ed.4052109082, ISBN 978-65-5983-340-5, S2CID 243447422
  4. ↑ Ferreira Neto, Miguel (2005). Doses de N e K aplicadas via fertirrigação na cultura do coqueiro (Cocos nucifera L. ) anão (Thesis). Universidade de Sao Paulo, Agencia USP de Gestao da Informacao Academica (AGUIA). doi:10.11606/t.11.2005.tde-02082005-130934.
  5. ↑ Oliveira, Ivan Tadeu Gomes de (2021). "Guia de relações multiespécies na Baía de Florianópolis - SC". Cadernos de Campo (São Paulo - 1991) (in Portuguese). 30 (1) e179745. doi:10.11606/issn.2316-9133.v30i1pe179745. ISSN 2316-9133. S2CID 238847257.
  6. ↑ Michereff, Mirian Fernandes Furtado; Vilela, Evaldo Ferreira; Michereff Filho, Miguel; Mafra-Neto, Agenor (2000). "Uso do feromônio sexual sintético para captura de machos da traça-das-crucíferas". Pesquisa Agropecuária Brasileira (in Portuguese). 35 (10): 1919–1926. doi:10.1590/s0100-204x2000001000002. ISSN 0100-204X.
  7. 1 2 Giustolin, Teresinha Augusta; Vendramim, José Djair; Postali Parra, José Roberto (2002). "Número de ínstares larvais de Tuta absoluta (Meyrick) em genótipos de tomateiro". Scientia Agricola (in Portuguese). 59 (2): 393–396. doi:10.1590/s0103-90162002000200028. ISSN 0103-9016.
  8. 1 2 Mendonça, Gerbson Azevedo de (2020). Polinização entomófila do coqueiro (>i<Cocos nucifera>/i< L.) (Thesis). Universidade de Sao Paulo, Agencia USP de Gestao da Informacao Academica (AGUIA). doi:10.11606/t.11.2020.tde-20200111-132157.
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