Homalinotus coriaceus explained

Homalinotus coriaceus, also known as the black coconut bunch weevil, is a species of weevil belonging to the family Curculionidae. This species can be found in Brazil.[1] This beetle is a pest species that affects coconut cultivation, due to its lifecycle and feeding habits.[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 the sap. Likewise, adults will often damage the flowers and fruit tissues.[3] Since both life states of H. coriaceus promote the death of the fruit and flowers of the coconut tree, it has been estimated to have reduced coconut production in Brazil by 50%.[4]

Morphology

Black coconut bunch weevils are black and range between 25and long with a rostrum of approximately,[5] [6] the mature larvae are white, curved, bigger than the adult-beetle with 40to in length and display a rust-tinted head.[7] The eggs laid on the floral peduncle are white, smooth, and elongated. This species has little to no sexual dimorphism, where females are a bit larger than males and have two subtle indentations on the pronotum.

Notes and References

  1. Web site: Homalinotus coriaceus L.Gyllenhal, 1836 . 2023-09-08 . www.gbif.org . en.
  2. Sarro . Fernanda B. . Crocomo . Wilson B. . Ferreira . Joana M. S. . Aspectos da biologia e morfologia da broca do pedúnculo floral do coqueiro, Homalinotus coriaceus (Gyllenhal) (Coleoptera: Curculionidae) . Neotropical Entomology . 2004 . pt . 33 . 7–12 . 10.1590/S1519-566X2004000100003 . 1519-566X. free . 11449/5815 . free .
  3. Doses de N e K aplicadas via fertirrigação na cultura do coqueiro (Cocos nucifera L.) anão. . Universidade de Sao Paulo, Agencia USP de Gestao da Informacao Academica (AGUIA) . Miguel . Ferreira Neto. 2005 . 10.11606/t.11.2005.tde-02082005-130934 . free .
  4. Oliveira . Ivan Tadeu Gomes de . 2021 . Guia de relações multiespécies na Baía de Florianópolis - SC . Cadernos de Campo (São Paulo - 1991) . pt . 30 . 1 . e179745 . 10.11606/issn.2316-9133.v30i1pe179745 . 238847257 . 2316-9133. free .
  5. Michereff . Mirian Fernandes Furtado . Vilela . Evaldo Ferreira . Michereff Filho . Miguel . Mafra-Neto . Agenor . Uso do feromônio sexual sintético para captura de machos da traça-das-crucíferas . Pesquisa Agropecuária Brasileira . 2000 . pt . 35 . 10 . 1919–1926 . 10.1590/s0100-204x2000001000002 . 0100-204X. free .
  6. 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 . pt . 59 . 2 . 393–396 . 10.1590/s0103-90162002000200028 . 0103-9016. free .
  7. Polinização entomófila do coqueiro (>i<Cocos nucifera>/i< L.) . Universidade de Sao Paulo, Agencia USP de Gestao da Informacao Academica (AGUIA) . Gerbson Azevedo de . Mendonça. 2020 . 10.11606/t.11.2020.tde-20200111-132157 . free .

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