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Updated: May 14, 2025
I was struck with this observation both on entering Brazil, and when I saw the many elegant and active forms of the Harpalidae re-appearing on the temperate plains of La Plata. Do the very numerous spiders and rapacious Hymenoptera supply the place of the carnivorous beetles?
Again in the fossorial hymenoptera, the neuration of the wings is a character of the highest importance, because common to large groups; but in certain genera the neuration differs in the different species, and likewise in the two sexes of the same species. Sir J. Lubbock has recently remarked, that several minute crustaceans offer excellent illustrations of this law.
They are predatory Hymenoptera, victualling their grubs with caterpillars. It will be interesting to compare their habits with those of the operator on the Grey Worm. Besides, the edifice built by the Eumenes in itself deserves inspection.
These acts are not the result of a stupid instinct which the Hymenoptera obey without understanding. If we place a swarm, as Huber did, in a roomy position where there is plenty of air, they do not devote themselves to an aimless exercise. This only takes place in the narrow dwellings which Man grants to his winged guests.
We are not such snobs as to think better or worse of a bee because it can claim kinship with the Hymenoptera family, nor so ill-bred as to chaff it for having large feet. The really interesting passage in the article occurs later, where it says: 'The bee industry prospers greatly in America. This is one of those broad statements that invite challenge. Elizabeth Boyd would have challenged it.
"It is one of the Hymenoptera," said Sumichrast; "it collects all round its eggs the food the young will eat when they are hatched; the insect is therefore full of forethought a good example for us to imitate." When the fire was ready, we started off in light marching order to explore the vicinity of our bivouac.
He who says Midge says Fly, Dipteron, two-winged insect; and our friend has four wings, one and all adapted for flying. By virtue of this characteristic and others no less important, she belongs to the order of Hymenoptera. Our Midge, the Microgaster, is the size of an average Gnat. She measures 3 or 4 millimetres. In spite of this likeness, they are easily distinguished.
It dealt with a very singular fact concerning the manners of one of the hymenoptera, a wasp, a Cerceris, in whose nest Dufour had found small coleoptera of the genus Buprestis, which, under all the appearances of death, retained intact for an incredible time their sumptuous costume, gleaming with gold, copper, and emerald, while the tissues remained perfectly fresh.
We meet with closely analogous facts with insects, for in ants the cerebral ganglia are of extraordinary dimensions, and in all the Hymenoptera these ganglia are many times larger than in the less intelligent orders, such as beetles. Dujardin, 'Annales des Sciences Nat. 3rd series, Zoolog., tom. xiv. 1850, p. 203. See also Mr. Lowne, 'Anatomy and Phys. of the Musca vomitoria, 1870, p. 14.
Among such larvæ I have experimented with those provided by chance those of various Bembeces, fed on Diptera; those of the Palaris, whose diet consists of a large variety of Hymenoptera; those of the Tachytus, provided with young crickets; those of the Odynerus, fed upon larvæ of the Chrysomela; those of the sand-dwelling Cerceris, endowed with a hecatomb of weevils.
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