. The Cambridge natural history. Zoology. CHAPTER IJ. HYMENOPTEEA ACULEATA COXTIXCJiD DIVISION II. DIPLOPTERA OR M'ASPS EUMENIDAE, SOLITARY TRUE WASPS VESPIDAE, SOCIAL WASPS MASARIDAE Division II. Diploptera—Wasps. Anterior wings longitudinally plicate in repose; the pronotum extending haclc, so as to form on each side an angle reposing on the tegula; the hasal seg- meyits of the hind hody not hectring nodes or scales ; the hind tarsi formed for simple ivcdking. The species either solitary or social in their ^ hahit'i- '^ome eri'itinn in fhree ^'«-26.—Upper aspect of pronotum naollS, some exis
. The Cambridge natural history. Zoology. CHAPTER IJ. HYMENOPTEEA ACULEATA COXTIXCJiD DIVISION II. DIPLOPTERA OR M'ASPS EUMENIDAE, SOLITARY TRUE WASPS VESPIDAE, SOCIAL WASPS MASARIDAE Division II. Diploptera—Wasps. Anterior wings longitudinally plicate in repose; the pronotum extending haclc, so as to form on each side an angle reposing on the tegula; the hasal seg- meyits of the hind hody not hectring nodes or scales ; the hind tarsi formed for simple ivcdking. The species either solitary or social in their ^ hahit'i- '^ome eri'itinn in fhree ^'«-26.—Upper aspect of pronotum naollS, some existing %n tlliee and mesonotiim of a wasp, £«me- forms, mcdes, females, and "«« coarctata. «, Angle of prono- ^^ _ turn ; &, tegula ; c, base of -wing ; WOrlCerS. ^_ mesonotum. This division of Hymenoptera includes the true wasps, but not the fossorial wasps. The name applied to it has been suggested by the fact that the front wings become doubled in the long direc- tion when at rest, so as to make them appear narrower than in most other Aculeata (Fig. 27). This character is unimportant in function so far as we know,^ and it is not quite constant in the division, since some of the Masaridae do not exhibit it. The character reappears outside the Diploptera in the genus Leucospis —a member of the Chalcididae in the parasitic series of Hymen- optera—the species of which greatly resemble wasps in coloration. A better character is that furnished by the well-marked angle, ' Janet lias suggested that the folding is done to keep the delicate hind-margins of the wings from being 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 Harmer, S. F. (Sidney Frederic), Sir, 1862- ed; Shipley, A. E. (Arthur Everett), Sir, 1861-1927. ed. [London, Macmillan and Co. , Limited; New York, The Macmillan C
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
