. Annales de la Société entomologique de Belgique. Insects; Entomology. 80 NOTES ON THE SALlVAUY-GLANDS AND SYRINGE OF TWO SP. HEMIPTERA by \ liorslinw F. Z. S. The following notes refer to Pristhesancus papueusis StAl, a carnivorous liug from N. Qiieensland, where it is exceedingly coininon ; and Enectus elongatus Dist., a phytopliagous sp. from the sanie dislrict, where it is not at ail comnion, and appeared to feed on but one or two kinds of tree. The salivary-glands, however, of Spliedanolesles moidicus StAl a carnivorous Bug from S. China, are almost identical with those of Pristliesa
. Annales de la Société entomologique de Belgique. Insects; Entomology. 80 NOTES ON THE SALlVAUY-GLANDS AND SYRINGE OF TWO SP. HEMIPTERA by \ liorslinw F. Z. S. The following notes refer to Pristhesancus papueusis StAl, a carnivorous liug from N. Qiieensland, where it is exceedingly coininon ; and Enectus elongatus Dist., a phytopliagous sp. from the sanie dislrict, where it is not at ail comnion, and appeared to feed on but one or two kinds of tree. The salivary-glands, however, of Spliedanolesles moidicus StAl a carnivorous Bug from S. China, are almost identical with those of Pristliesancus papuensis. In the embryo the salivary syringe appears to arise as a dilatation ordiverticulum atthe junc- tion of the two salivary ducts (c, fig. i). It seenis to be a part of the salivary ducts and like Ihem is trans- versely striated, which is quite évident in the earlier stages before the syringe bas become heavily chiti- nised (a, fig. 1). Powerful retractor muscles attach to thchirgerandclosed end of thediverticulum,andatalaterembryonic stage this end is invagi nated to form the plunger or piston (b, lig. 1), whilsttheouterwallorsyringe barrelbecomesverychitinousandhard. In the adult Bug the wallofthesyringe-bar- rel (pb, fig. 2) where the saiivai'y-dwcts en- ter (jsd) is bulgOil oui wards, forming a sub- trianguiar recess in the interior, over which lies a less hea- vily cliitinised fold froin the wall just at — and parti y forming — the cntrance of the ducts. This told acts as a valve (V), opening inwards when the retraction of the plunger(p) causes a vacuum -^ ^v p in the syringe-barrel and Z, the saliva tlows in, and closing when the retractor muscles (m). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Société entomologique de Belgique. Bruxelles : Société entomologique de Belgique
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Keywords: ., bookcentury1800, bookd, booksubjectentomology, booksubjectinsects
