Research Article |
Corresponding author: Soad I. Abdel-Razak ( soadramadan@hotmail.com ) Academic editor: Roger Blackman
© 2017 Soad I. Abdel-Razak, Daniele Matile-Ferrero, Adeline Souiler-Perkins.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Abdel-Razak SI, Matile-Ferrero D, Soulier-Perkins A (2017) Redescription of the red-striped soft scale, Pulvinaria tenuivalvata (Newstead), with a new synonymy (Hemiptera, Coccomorpha, Coccidae). ZooKeys 647: 101-107. https://doi.org/10.3897/zookeys.647.11225
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The soft scale, Pulvinaria tenuivalvata (Newstead, 1911), is a major pest of sugarcane in Egypt. This paper provides a redescription and illustration of the adult female based on a microscopic study of the morphology of several adult female specimens and of the type series illustrated by
Coccidae , Egypt, pest, sugarcane, synonymy
Sugarcane, Saccharum officinarum L. (Poaceae) is one of the main crops in Egypt, and the control of pests on this crop is very important. The red-striped soft scale Pulvinaria tenuivalvata is a major pest since 1992, when it was observed for the first time and named as Pulvinaria elongata Newstead (
The species was described by
The present paper redescribes and illustrates the adult female of Pulvinaria tenuivalvata (Newstead) in detail. In addition, we were able to study two paratypes of Pulvinaria saccharia De Lotto, 1964 and conclude that the name Pulvinaria saccharia is a junior synonym of the name Pulvinaria tenuivalvata.
Slide-mounted adult females were studied from the entomology collections at The Natural History Museum, London, U.K. (BMNH) and Muséum national d’Histoire naturelle, Paris, France (
Lecanium tenuivalvatum Newstead, 1911: 92.
Pulvinaria
tenuivalvata
(Newstead),
Pulvinaria
elongata
Newstead;
Saccharolecanium
krugeri
(Zehntner);
Pulvinaria
saccharia
De Lotto, 1964: 863, 2 paratype adult females, South Africa, Natal, Durban, on Saccharum officinarum, J. Munting, 25/03/1964 (BMNH);
Figs
Pulvinaria tenuivalvata (Newstead). A Body, venter and dorsum B marginal setae C1 anal plates, dorsal view C2 ano-genital fold D dorsal discoidal pore E dorsal filamentous pore F spiracular setae G dorsal seta H antenna I ventral microduct J ventral submarginal seta K spiracular disc-pore L ventral tubular ducts of three types: L1, type I, L2, type II, L3, type III M claw digitules unequal N multilocular disc-pore.
Pulvinaria tenuivalvata (Newstead). 2A marginal setae 2B anterior spiracular setae 2C anterior spiracle 3A tibio-tarsal articulatory sclerosis 3B tarsal digitules 3, claw digitules unequal 4A antenna 4B ventral tubular ducts of the type I 5A posterior spiracular setae 5B ventral tubular ducts of the type I 6 dorsal conical setae.
Body (Fig.
Margin: marginal setae (Fig.
Dorsum: dorsal setae (Fig.
Venter: submarginal setae (Fig.
Egypt: 100 km south of Cairo, Benisueif, on sugarcane and rarely on maize, M.A. Shalaby, ? 1997 (BMNH); upper Egypt, Giza, on sugarcane leaves, 1997 (BMNH); Qena Governorate, Luxor and Qus (700 km south of Cairo), on undersides of sugarcane leaves, S.A. El-Serwy, 01/1999 (BMNH); Giza region, 40-80 km south of Cairo, on Saccharum officinarum (commercial), S.A. El-Serwy, 10/08/1999 (BMNH); upper Egypt, Qena Governorate, on sugarcane leaves, 12/2000 (BMNH); on sugarcane, S. Ramadan, 2011 (
The main host plant in Egypt is sugarcane, Saccharum officinarum, but it has also been recorded from several other Poaceae in Egypt: Imperata cylindrica, Sorghum vulgare saccharatum, and Zea mays. The species is known on Cymbopogon citratus (citronella grass) and Pennisetum purpureum in Uganda (
Two paratypes of Pulvinaria saccharia De Lotto, 1964, have been examined, both adult females. The dorsal setae are short, strong and spiniform, but certainly not lanceolate as stated by the previous authors (
The first author wishes to thank the Muséum national d’Histoire naturelle, Paris (