Geographic distribution of the Ipomoea batatas (Convolvulaceae) pest, Bedellia somnulentella (Zeller) (Lepidoptera: Bede
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Geographic distribution of the Ipomoea batatas (Convolvulaceae) pest, Bedellia somnulentella (Zeller) (Lepidoptera: Bedelliidae), in Minas Gerais state, Brazil Marinalva Martins dos Santos1 · Gleisiany Nunes Gomes1 · Thiago Almeida Andrade Pinto1 · Isabel Moreira da Silva1 · Germano Leão Demolin Leite2 · Marcus Alvarenga Soares1 Received: 4 May 2020 / Accepted: 24 September 2020 © Deutsche Phytomedizinische Gesellschaft 2020
Abstract The microlepidoptera Bedellia somnulentella is a pest insect of Ipomoea batatas leaves, with the first report in South America, in the city of Diamantina, Minas Gerais state, Brazil, in 2018. The mining caterpillars of B. somnulentella cause damage to the leaf mesophyll of the host plant, Ipomoea batatas, an important crop which contributes to overcoming world food insecurity with high nutritional value. The objective of this work is to register the occurrence of B. somnulentella in I. batatas in the cities of Lavras and Salinas, located, respectively, in the southern and northern regions of Minas Gerais state, Brazil. The individuals of B. somnulentella were observed in field areas of the Universidade Federal de Lavras (21° 14′ S, 44° 58′ W, at an elevation of 919 masl) in Lavras and at the Instituto Federal do Norte de Minas Gerais (15° 27′ S, 44° 22′ W, at an elevation of 474 masl) in the city of Salinas. in production sites of the northeastern region These records increase the knowledge concerning the geographic distribution of this pest in the country and indicate the importance of developing strategic studies for pest contingency plans and integrated pest management (IPM). To monitor B. somnulentella in I. batatas, it is necessary to accompany the expansion of this pest in other regions, especially in the maof Brazil, a warmer region, and the southern states, with a milder climate. Keywords Leaf miner · Microlepidoptera · Minas gerais · New records · Sweet potato
Introduction Ipomoea batatas represents a vital crop for contributing to overcoming world food insecurity, due to the increasing human population and the predicted future climate change scenarios, especially in regions with a lower human development index (Echoduet al. 2019). At the same time, insect pests, diseases and lack of resistant cultivars are obstacles to monocultural production of this food crop (Echoduet al. 2019). Insects play a great part in crop damage worldwide
* Marinalva Martins dos Santos [email protected] 1
Departamento de Agronomia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Minas Gerais 39100‑000, Brazil
Instituto de Ciências Agrárias, Universidade Federal de Minas Gerais, Montes Claros, Minas Gerais 39404‑547, Brazil
2
and are responsible for approximately 50% of total crop loss (García-Lara and Serna-Saldivar 2016; Cabi 2019). The microlepidoptera, Bedellia somnulentella (Zeller) (Lepidoptera: Bedelliidae), feeds on plants of the Convolvulaceae family, especially Ipomoea batatas (Parenti 2000). Salix sp. (Salicaceae),
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