Rivas Cano, Alejandra

Rodríguez Chalarca, Jairo

English

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Description of the developmental stages of  Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae) Disease vector in maizeAllianceThe Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT) delivers research-based solutions that harness agricultural biodiversity and sustainably transform food systems to improve people’s lives. Alliance solutions address the global crises of malnutrition, climate change, biodiversity loss, and environmental degradation.The Alliance is part of CGIAR, a global research partnership for a food-secure future.www.bioversityinternational.org       www.ciat.cgiar.org  www.cgiar.orgADVANTA SEEDS is a multinational seed business, which deploys the most advanced technologies in traditional plant breeding in a huge database of proprietary germplasm to obtain high-potential hybrids, thus offering high-quality seeds to farmers with the aim of improving their livelihoods through sustainable crop production. For the North Latin American region, our outstanding genetic work in maize develops hybrids in Thailand with the best tropical traits, including high yield, excellent stability, wide adaptability and quality grain. Furthermore, our close relationship with farmers, through our technical force, allows us to better understand their needs and put our technology to their service.www.advantaseeds.comAlejandra Rivas Cano1 and Jairo Rodríguez Chalarca2ISBN: 978958694232-4E-ISBN: 978958694233-1Description of the developmental stages of   Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae)Disease vector in maize1 Research Assistant2 Research Associate Research Area on Crops for Nutrition and HealthAllianceAlliance of Bioversity International and the International Center for Tropical Agriculture (CIAT)The Americas HubP. O. Box 6713 Km 17 Recta Cali–Palmira CP 763537Cali, ColombiaTelephone:  57 2 4450000Email: j.chalarca@cgiar.orgWebsite: www.ciat.cgiar.orgCIAT Publication No. 493March 2020Print run: 500 copiesISBN: 978958694232-4 E-ISBN: 978958694233-1Rivas Cano A; Rodríguez Chalarca J. 2020. Description of the developmental stages of Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae) - Disease vector in maize. International Center for Tropical Agriculture (CIAT). Cali, Colombia. 16 p. Available at: https://hdl.handle.net/10568/107919Original Spanish version https://hdl.handle.net/10568/107159Key words: Pests and diseases; Maize; Pest characterization.Copyright © CIAT 2020. All rights reserved.CIAT encourages wide dissemination of its printed and electronic publications for maximum public benefit. Thus, in most cases, colleagues working in research and development should feel free to use CIAT materials for noncommercial purposes. However, the Center prohibits modification of these materials, and we expect to receive due credit. Though CIAT prepares its publications with considerable care, the Center does not guarantee their accuracy and completeness.All images remain the sole property of their source and may not be used for any purpose without written permission of the source.AcknowledgementsThanks to Advanta Seeds for supporting dissemination of important information for the maize sector in the region. We are grateful as well to the research team on Soil Arthropods of the Alliance of Bioversity International and the International Center for Tropical Agriculture (CIAT) Research Area on Crops for Nutrition and Health.ContentsEgg ...................................................................................................................................................................................................1Nymph I...........................................................................................................................................................................................3Nymph II .........................................................................................................................................................................................5Nymph III ........................................................................................................................................................................................7Nymph IV ........................................................................................................................................................................................9Nymph V .......................................................................................................................................................................................11Adults .............................................................................................................................................................................................13Bibliography ............................................................................................................................................................................... 16EGGDescription of the developmental stages of Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae)2The female lays around 132 eggs during her lifetime, depositing 4–19 eggs, one by one, in rows of 8 eggs (Fig. A) (Cuadra and Maes, 1990).The egg is very small and has an oval shape (Fig. B). A newly laid egg is colorless and turns white one week later.A BStage: EggDisease vector in maize 3NYMPH  IDescription of the developmental stages of Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae)4At this stage, the nymph reaches 1.06 mm in length. It is hyaline and has red-colored eyes, a feature that disappears as it grows into the next stage.Stage: Nymph  IDisease vector in maize 5NYMPH  IIDescription of the developmental stages of Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae)6Nymphs at this stage are approximately 1.58–2.12 mm in length. They are cream colored and their setae become more visible (Fig. A). Some nymphs show dark spots starting at the seventh abdominal segment (Fig. B). Dark spots are also seen in other parts of the body (Fig. C).A B CStage: Nymph  IIDisease vector in maize 7NYMPH  IIIDescription of the developmental stages of Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae)8Length at this stage is approximately 2.37 mm. They are cream colored and show spots at the eighth abdominal segment (Fig. A). The intensity of spots increases across the whole body (Fig. B, C).A B CStage: Nymph  IIIDisease vector in maize 9NYMPH  IVDescription of the developmental stages of Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae)10At this stage, the nymph is 2.87–2.95 mm in length. Traces of wings become evident at the first and second abdominal segment (Fig. A). Wings expand towards the edge of the third abdominal segment (Fig. B).A BStage: Nymph  IVDisease vector in maize 11NYMPH  VDescription of the developmental stages of Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae)12Nymph is approximately 3.43–3.50 mm in length. Wings expand to the fourth abdominal segment.Stage: Nymph  VDisease vector in maize 13ADULTSDescription of the developmental stages of Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae)14The female is around 4.9 mm in length; it is cream colored and shows two characteristic dark spots on the head (Fig. A). The reproductive system (ovipositor) is visible to the naked eye, as it is darker in color (Fig. B).A BStage: AdultsDisease vector in maize 15The male is cream colored and 4.5 mm in length. Similar to the female, it shows two characteristic dark spots on the head (Fig. A). Dark spots may be seen across the body (Fig. A). The reproductive system is not visible to the naked eye (Fig. B).A BDescription of the developmental stages of Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae)16BibliographyCuadra P; Maes J. (1990). Problemas asociados al muestreo de Dalbulus maidis (DeLong & Wolcott) en maíz en Nicaragua. Revista Nicaragüense de Entomología 13:29–55.Printed by Enfoque FuncionalCali, ColombiaBioversity International and the International Center for Tropical Agriculture (CIAT) are part of CGIAR, a global research partnership for a food-secure future.Bioversity International is the operating name of the International Plant Genetic Resources Institute (IPGRI).The Americas HubKm 17 Recta Cali-Palmira. CP 763537P.O. Box 6713Cali, ColombiaTel. (+57) 2 4450000www.bioversityinternational.orgwww.ciat.cgiar.orgwww.cgiar.orgAlliance

Description of the developmental stages of Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae) Disease vector in maize

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Description of the developmental stages of Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae) Disease vector in maize

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