Artigos sobre Pterophylla (Pterophylla) camellifolia (Fabricius 1775)

Common True Katydid (Pterophylla camellifolia)

fornecido por Singing Insects of North America (text)

Identification: Length 39-50 mm. A leaf-green, deliberate-moving katydid--as befits a near-flightless species living in treetops. Length of pronotum approximately equal to its rear width; side of pronotum deeper than wide.

Habitat: Crowns of deciduous trees in forests, woodlots, and yards.

Season: June (Fla.) or July (N. Car., Ill.) to October;

Remarks: Common true katydids vary geographically not only in song but also in structure of the male cerci and subgenital plate. Treating all variants as populations of a single species accords with the observation that individuals of intermediate characteristics occur where populations of contrasting types come in contact. Such individuals are evidence of matings and gene flow between populations. The best studied contact zone is between northern and southeastern song types along the Appalachian Mountains. R. D. Alexander and K. C. Shaw drove back and forth across the zone at night listening to hundreds of thousands of individuals and tape recording hundreds (Alexander 1968). Sometimes the two song types were kept apart by natural or manmade ecological barriers, but when they came in contact there was generally a zone of intermediates varying in width "from a few yards to more than a hundred miles."

More information: subfamily Pseudophyllinae

References: Balsbaugh 1988; North & Shaw 1979; Shaw 1968, 1975; Shaw & Carlson 1969; Weissmann & Leatherman 1992.

Balsbaugh EU Jr. 1988. First record of the true katydid, Pterophylla camellifolia, new record, Orthoptera: Tettigoniidae: Pseudophyllinae, in North Dakota. Gt. Lakes Entomol. 21: 91-92.
North RC, Shaw KC. 1979. Variation in distribution, morphology, and calling song of two populations of Pterophylla camellifolia (Orthoptera: Tettigoniidae). Psyche 86: 363-374.
Shaw KC. 1968. An analysis of the phonoresponse of males of the true katydid Pterophylla camellifolia (Fabricius) (Orthoptera: Tettigoniidae). Behaviour 31: 203-260.
Shaw KC. 1975. Environmentally-induced modification of the chirp length of males of the true katydid Pterophylla camellifolia (F) (Orthoptera: Tettigoniidae). Ann. Entomol. Soc. Am. 68: 245-250.
Shaw KC, Carlson OV. 1969. The true katydid, Pterophylla camellifolia (Fabricius) (Orthoptera: Tettigoniidae) in Iowa: two populations which differ in behavior and morphology. Iowa State J. Sci. 44: 193-200.
Weissmann MJ, Leatherman DA. 1992. Range extension of the northern true katydid, Pterophylla camellifolia (F.) (Orthoptera: Tettigoniidae: Pseudophyllinae) into eastern Colorado. J. Kans. Entomol. Soc. 65: 448-449.

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Pterophylla (Pterophylla) camellifolia (Fabricius 1775)

Common True Katydid (Pterophylla camellifolia)

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