Cleogonus insulcatus Fiedler, 1954 (Coleoptera: Curculionidae): first report in Brazil and a new host plant record, Handroanthus impetiginosus (Mart. ex DC.) Mattos

Marcelo T Castro,Sandro C.L Montalvão,Rose G Monnerat,Germano H Rosado-Neto

doi:10.37486/2675-1305.ec02021

Abstract

The purple trumpet tree [Handroanthus impetiginosus (Mart. Ex DC.) Mattos - Bignoniaceae] is one of the most prominent tree species in the Brazilian Federal District, with more than 150 trees in the Plano Piloto region of Brasília. In March 2017, weevils (Coleoptera) were observed in ripe fruits of purple trumpet trees feeding on already dried seeds. The objective of this paper is to report and describe the main damage to seeds and pods of H. impetiginosus in Brasília, Brazil, caused by this beetle. The insect was identified as Cleogonus insulcatus Fiedler, 1954 (Coleoptera: Curculionidae). Of the 126 fruits analyzed, 104 exhibited predation by C. insulcatus (82.5%) and 377 larvae were collected inside the pods feeding on the seeds. This is the first report of C. insulcatus in Brazil and the first record of damage to H. impetiginosus pods and seeds caused by this insect.

Highlights

In March 2017, weevils (Coleoptera) were observed in ripe fruits of purple trumpet tree feeding on already dried seeds (Fig. 1)
To investigate this insect more thoroughly, this paper reports and describes the main damage caused by this insect to H. impetiginosus seeds and pods in Federal District, Brazil
The material was taken to the Laboratory of Plant Sciences of the Centro Universitário ICESP in Brasília, where they were weighed, and the number of external holes caused by insects in the pods counted

Summary

Introduction

The purple trumpet tree [Handroanthus impetiginosus (Mart. Ex DC.) Mattos - Bignoniaceae] is one of the most prominent tree species in the Brazilian Federal District, with more than 150 trees in the Plano Piloto region of Brasília. (Bignoniaceae), is one of the most prominent tree species in the Federal District, with more than 150 trees in the Plano Piloto region of Brasília (Kurihara et al 2005; Silva Junior & Lima 2010). Several insects of the orders Lepidoptera, Coleoptera, Hymenoptera, and Hemiptera have been found associated with purple trumpet tree.

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Conclusion