. Economic entomology. Beneficial insects; Insect pests; Thysanura. HYPOPID.^. 2:;i CASE There have been about twenty species of Hypopus described, Dujardin having subsequently added a i^w more to those pre- viously mentioned. Here, perhaps, should follow one of Hering's species found by him on dried figs, and which he named Acarus passularum (Nov. Act. Cur. 1838). It has been supposed to be a Hypopus, but the uncertainty in which many points have been left by him, which have since been found to be of importance, prevents more than probable conjecture as to the genus to which the species he ha
. Economic entomology. Beneficial insects; Insect pests; Thysanura. HYPOPID.^. 2:;i CASE There have been about twenty species of Hypopus described, Dujardin having subsequently added a i^w more to those pre- viously mentioned. Here, perhaps, should follow one of Hering's species found by him on dried figs, and which he named Acarus passularum (Nov. Act. Cur. 1838). It has been supposed to be a Hypopus, but the uncertainty in which many points have been left by him, which have since been found to be of importance, prevents more than probable conjecture as to the genus to which the species he has figured belongs. The figure he gives certainly does not look like one. Genus Trichodactyltjs {Dufoitr, Ann. Sc. Nat, 2nd Ser. xi. 1839). This genus was proposed in 1839 by M. Leon Dufour for one or two species of parasitic mites found on bees. The name is derived from the last pair of feet terminating in one or more long hairs, instead of in a tarsus or claw. They have obviously much affinity with Hypopus, both in habit and structure, the posterior legs of which terminate in something the same manner; so much. Leg of Trichodactylus Osmias. Copied from Donnadieu's figure. so that Dujardin regards them as belonging to the same genus. But we think that the more powerful make and claws of the first three pairs of legs in Trichodactylus, combined with the nidi-. 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 Murray, Andrew, 1812-1878. [London] Chapman and Hall
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