. Elementary entomology . Fig. 483. Showing method of pinning Coleoptera (After Washbum) mounted on elbow pins, or on bits of fine silver wire {ininntic7i- nadeln), which are stuck through bits of cork or pith and pinned like a cardboard point. Diptera. In the Diptera the pin is run through the central part of the thorax, and the wings, if not spread, should be extended. In the long-legged flies, as the crane-fly, the legs should be supported until the specimen is dry. In fact, it is not a bad idea to place a permanent piece of cardboard on the pins hold- ing such specimens. The smaller Dipter
. Elementary entomology . Fig. 483. Showing method of pinning Coleoptera (After Washbum) mounted on elbow pins, or on bits of fine silver wire {ininntic7i- nadeln), which are stuck through bits of cork or pith and pinned like a cardboard point. Diptera. In the Diptera the pin is run through the central part of the thorax, and the wings, if not spread, should be extended. In the long-legged flies, as the crane-fly, the legs should be supported until the specimen is dry. In fact, it is not a bad idea to place a permanent piece of cardboard on the pins hold- ing such specimens. The smaller Diptera are usually mounted on wire or cardboard points. Coleoptera (Fig. 483). All of the larger Cole- optera are pinned through the anterior inner portion of the right wing-cover. The wings are never spread, and but little attention need be given the specimens after pin- ning, as the legs usually adjust themselves. The smaller forms are mounted on cardboard points and should be glued on the side to reveal the undersurface. Hymenoptera (Fig. 484). These are pinned through the metathorax ; the wings may or may not be spread. Some of the more slender forms, as the Ichneumon-flies, require a support until they are dry. Many of the parasitic Hymenoptera are mounted on slides in Canada balsam, but the usual way is to mount on points, either cardboard or wire. Mounting insects on points. General directions have al- ready been given for mounting insects on points. It may be well, however, to men- tion some of the different types of points used in mounting insects. Micro-pins (Fig. 486, d) are largely used for mounting Lepidoptera, Neuroptera, and Diptera. These micro-pins {niijiutien-iiadchi)
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Keywords: ., bookcentury1900, bookdecade1, booksubjectentomology, bookyear1912
