Genus Amblycorypha - Round-headed Katydids

Oblong-winged Katydid (A. oblongifolia), Round-winged Katydids, Virtuoso Katydids

Nearctica.com lists 7 spp.

Arnett, p. 160, lists 11 spp. (1)

Circa 21-45 mm (A. oblongifolia 40-45 mm)

Compare Microcentrum and Scudderia. Amblycorypha has long legs (hind femora extent almost to tips of tegmina) like Scudderia, but more rounded wings. Amblycorypha has overall shape of Microcentrum, though rather more rounded, esp. female. Especially the tip of the forewings (tegmina) in Amblycorypha is more rounded than in Microcentrum. Top of the head rounded, strongly deflexed. Green, but some species, esp. A. floridana, have a pink phase. Some species have a yellow phase as well! This genus has a wide space between base of antennae, apparently distinctive, and differntiates from Microcentrum, Scudderia.

Stridulatory apparatus of some male Amblycorypha is very large.

See also the SINA Key to genera of false katydids.

Includes eastern North America

Typically damp fields, edges, flowers (A. oblongifolia).

Typically June-October (A. oblongifolia, North Carolina), August to October(same species, Michigan)

Herbivores, feed especially on foliage of deciduous woody plants. Adults found on flowers.

Eggs are laid in soil (some references), or into plant tissue, take 2-3 years to hatch (or hatch the next spring according to other references). Males stridulate.

Arnett, p. 160, fig. 11.12 (1)

Brimley, p. 19, lists A. floridana carinata--coastal plain, A. oblongifolia, A. rotundifolia, A. uhleri--coastal plain. (2)

Bland, pp. 160-161, A. oblongifolia and A. rotundifolia (3)

Helfer, pp. 273-274, fig. 424 (4)

Borror and White, pp.80-81 (5)

Milne, pp. 429-430, fi. 287 (6)

Lutz, 3rd. ed., p. 56, plate 79 (7)

Salsbury, p. 70 (8)

Insects of Cedar Creek--photo, phenology

SINA--genus account, species list

Website list of Katydids north of Mexico, with photos of many species, distribution maps, AND recorded sounds: BUZZ .