File:Bulletin of entomological research (1919) (20416985506).jpg

Title: Bulletin of entomological research
Identifier: bulletinof1019191920grea (find matches)
Year: 1910 (1910s)
Authors: Great Britain. Colonial Office. Entomological Research Committee; Imperial Institute of Entomology; Commonwealth Institute of Entomology
Subjects: Entomology
Publisher: Farnham Royal : Commonwealth Agricultural Bureaux
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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202 ROBERT NEWSTEAD. The deeply divided duplex lobes give the margin of the pygidium a strikingly characteristic appearance. In its general facies the female resembles that of Chionaspis herbae, Green ;* but the latter has only three pairs of lobes, whereas C. madiunensis has four. There are also other slight differences, notably the large number of chitinised patches on the thorax. I tender my sincere thanks to Mr. E. Ernest Green for the determination of this species, and also for comparing it with examples of his C. herbae. The latter I had not seen. Chionaspis tenuidisculus, sp. nov. Female Puparium. Form somewhat oblong, sides almost parallel; highly convex, the convexity commencing abruptly near the middle region of the second exuviae. Larval exuviae nude, orange-yellow to golden yellow. Second exuviae bright orange- yellow ; secretionary covering thin, semitranslucent, white. Secretionary portion pure white, slightly polished and very strongly laminate. Length, 1*4-1 '7.
Text Appearing After Image:
A3v-^ Fig. Chionaspis tenuidisculus, Newst. a, pygidium ; b, margin of do. Female, adult. Dead examples dull yellow to red-brown; cuticle rather strongly chitinised ; general form fairly well preserved ; segmentation distinct; margin folded inwards towards the venter, traces of these folds also visible in the specimens after maceration in KOH. Form elongate, much narrowed and produced anteriorly. Eudimentary antennae rather widely separated; tubercle with one blunt spiny process, and a long and unusually stout spine. Anterior stigmata in a deep horn- shaped cavity; with from one to three gland-pores. Pygidium (fig. 23, a) broadly rounded ; median area with several large clear and more or less oval spaces or vacuoles, somewhat irregularly disposed. Anal orifice near the articulation of the abdominal segment. Gland-pores large and rather heavily chitinised. Margin (fig. 23, b) with two pairs of lobes; median pair relatively broad and serrated; second pair duplex, the upper lobule very small and generally notched on both sides. Squamae simple and somewhat slender. Spines minute. Integument rather strongly but finely reticulated. *Coccidae of Ceylon, p. 132.

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