. Annals. Entomology. Fig. 3. Tarsal armatures of Syncaligus, a; of Phytoptipalpns. b; and of Eriophyes, c. the Spider mites the genus Syncaligus, a genus showing many relationships with Phytoptipalpns, has a tarsal armature most nearly like that of the Eriophyids. In this genus there is a ventral structure, the empodium (Fig. 3, a), which differs from the "feather hair" of the Eriophyidae only in being stouter and having one or two less barbs, or branches. In addition to the empodium in Syncaligus, two tarsal claws are present. It is from the Syncaligus type of tarsus that the tarsa
. Annals. Entomology. Fig. 3. Tarsal armatures of Syncaligus, a; of Phytoptipalpns. b; and of Eriophyes, c. the Spider mites the genus Syncaligus, a genus showing many relationships with Phytoptipalpns, has a tarsal armature most nearly like that of the Eriophyids. In this genus there is a ventral structure, the empodium (Fig. 3, a), which differs from the "feather hair" of the Eriophyidae only in being stouter and having one or two less barbs, or branches. In addition to the empodium in Syncaligus, two tarsal claws are present. It is from the Syncaligus type of tarsus that the tarsal armature of both Phytoptipalpus and the Eriophyidae have probably been developed; in Phytoptipalpus by the splitting of the empodium into two and an increasing of the number of its branches, and in the Eriophyidee by the atrophy of one of the tarsal claws. That one of the tarsal claws is easily lost is shown repeatedly in the Acarina. Even in the Tetranychidte it is now. 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 Entomological Society of America. Baltimore [etc. ]
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