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Article
Published: 2019-08-27

New Mycodiplosis gall midge (Diptera: Cecidomyiidae) feeding on fungal rusts (Fungi: Pucciniomycetes) that are pathogenic on cultured plants

Department of Plant Protection, College of Horticulture and Landscape, Tianjin Agricultural University, 22 Jinjing Road, Tianjin 300384, China.
Department of Plant Protection, College of Horticulture and Landscape, Tianjin Agricultural University, 22 Jinjing Road, Tianjin 300384, China.
Department of Plant Protection, College of Horticulture and Landscape, Tianjin Agricultural University, 22 Jinjing Road, Tianjin 300384, China.
Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education, Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, 498 Shaoshannan Road, Changsha 410004, China
Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education, Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, 498 Shaoshannan Road, Changsha 410004, China
Institute of Entomology, College of Life Sciences, Nankai University, 94 Weijin Road, Tianjin 300071, China.
Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education, Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, 498 Shaoshannan Road, Changsha 410004, China
Department of Plant Protection, College of Horticulture and Landscape, Tianjin Agricultural University, 22 Jinjing Road, Tianjin 300384, China.
Department of Plant Protection, College of Horticulture and Landscape, Tianjin Agricultural University, 22 Jinjing Road, Tianjin 300384, China.
Institute of Entomology, College of Life Sciences, Nankai University, 94 Weijin Road, Tianjin 300071, China.
Bionomics Limited, 31 Dalgleish Street, Thebarton SA 5031, Australia.
fungal rust disease plant crops sua wood annual ryegrass maize peanut spring onion biological control

Abstract

Larvae of a gall midge were found feeding on the fungal rust Maravalia pterocarpi (Pucciniomycetes: Pucciniales: Chaconiaceae) infesting the economically important sua tree Dalbergia tonkinensis (Fabaceae) on Hainan Island, China. The adults, pupae and larvae were collected, their morphology was studied and a segment of the Cytochrome Oxidase unit I (COI) mitochondrial gene was sequenced. The gall midge proved to be a species new to science that belongs to the genus Mycodiplosis (Diptera: Cecdiomyiidae). Comparison of the sequence to published Cecdiomyiidae sequences revealed that, despite being undescribed and unnamed, it was previously found in east and south-east Asia to feed on several rust species: Puccinia coronata (Pucciniomycetes: Pucciniales: Pucciniaceae) that develops on Lolium multiflorum (Poaceae), Puccinia sp. on Zea mays (Poaceae), Puccinia arachidis on Arachis hypogaea (Fabaceae) and Puccinia allii on Allium fistulosum (Amaryllidaceae). The new species is described and named here Mycodiplosis puccinivora Jiao, Bu & Kolesik. It occurs in China, Japan, Thailand, Bangladesh and possibly Malaysia and Australia. In Hainan it has four to five generations per year.

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