Forest entomology . g. 194.—Cerataphis latanne(fringed aphis) on to horticulturistsas the black-seed scale. to that ereat. 204 FOREST ENTOMOLOGY. species of this family is often mistaken for a scale—viz., the fringedaphis (Gerataphis latanice), known to horticulturists as the black-seed scale: it occurs on palms, orchids, &c. (see fig. 194). The Psyllidae very much resemble the Aphididse in general appear-ance, but their legs are formed for leaping. The wings are clear, theantennae conspicuous, long, nine- or ten-jointed, and the eyes large andprominent. The tarsus is two-jointed. I
Forest entomology . g. 194.—Cerataphis latanne(fringed aphis) on to horticulturistsas the black-seed scale. to that ereat. 204 FOREST ENTOMOLOGY. species of this family is often mistaken for a scale—viz., the fringedaphis (Gerataphis latanice), known to horticulturists as the black-seed scale: it occurs on palms, orchids, &c. (see fig. 194). The Psyllidae very much resemble the Aphididse in general appear-ance, but their legs are formed for leaping. The wings are clear, theantennae conspicuous, long, nine- or ten-jointed, and the eyes large andprominent. The tarsus is two-jointed. In general appearance the Aleyrodidae are the nearest approachto the scale-insects, more especially so in their nymphal or pupal stages. Their bodies are of anivory-white colour, scaly-lookingin appearance; both sexes arewinged, and the tarsi two-jointed. Fig. 195.—Scale-like secretion o/Aleurodes Thev often deposit a Scale - like on leaf of tomato. J L secretion on plants (see fig. 195).Aleyrodidae are found on tomatoes, &c, in greenhouses, and on ivy,lime, and hazel in the woods. The closely allied Coccid^e are bro
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