Zelus annulosus

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Zelus annulosus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hemiptera
Infraorder: Cimicomorpha
Family: Reduviidae
Genus: Zelus
Species: Z. annulosus
Binomial name
Zelus annulosus
(Stål, 1866)

Zelus annulosus is an assassin bug found in South America. It frequently associates with Hirtella physophora (Chrysobalanaceae), a plant that houses colonies of plant-ants Allomerus decemarticulatus and provides the ants with nectar.[1]

Some species of Zelus gather sticky substances from certain plants to coat their legs; Z. annulosus does not engage in this behavior, instead secreting the substance.[2]

Z. annulosus apparently is able to avoid being attacked by the ants by walking primarily on the plant's trichomes, which shield the assassin bug from the ants, but still allow Z. annulosus to be protected by having the ants in the vicinity.[1]


  1. ^ a b Messika Revel; Alain Dejean; Régis Céréghino; Olivier Roux (2010). "An assassin among predators: the relationship between plant-ants, their host myrmecophytes and the Reduviidae Zelus annulosus". PLoS ONE. 5 (10): e13110. doi:10.1371/journal.pone.0013110. PMC 2948506Freely accessible. PMID 20957040. 
  2. ^ R. L. Usinger (1958). "Harzwanzen or resin bugs in Thaïland". The Pan-Pacific Entomologist. 34: 52.