By Charles T Brues

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Sample text

20 Mouth mandibulate . . . . . . . . . . . . . . . . . . 21 . Mouth haustellate, the mandibles not formed for chewing; no cerci; crossveins few. . . . . . . . . . . . . . . . . . 28 Tarsi five-jointed, if rarely three- or four-jointed, the hind wings are smaller than the front ones and the wings lie flat over the body ;no cerci . . . . . . . . . . . . . . . . . . . . 22 Tarsi two-, three- or four-jointed; veins and crossveins not numero u s .

Soc. Washington, 26, pp. 53-60 (1924). F. Grylloblattidze. Boll. Zool. Gen. Agrar. Portici, 20, pp. 107-121 SILVESTRI, (1928). WALKER,E . M. A Kew Species of Orthoptera Forming a S e w Genus and Family. , 46, pp. 93-97 (1914). The Male and Immature Stages of Grylloblatta. , 61, pp. 131-139 (1919). ORDER O R T H ~ P T E R A ( ULOATATA part; S A L T A T ~ R I A ) Small to large, nearly always jumping species, often possessing a device on the wings for making a creaking or chirping sound; hind femora almost always very much stouter basally, or longer, or both, than the middle femora; wings of adults reposing over the abdomen, the fore wings toughened, narrower and thicker than the membranous, plaited hind pair; sometimes the wings restigial or completely absent; head usually vertical, sometimes conically produced forward; ovipositor almost always free, often long, sword- or needle-shaped; mouthparts conspicuous, mandibulate; antenne long and many-jointed or short with few joints; tarsi usually four- or three-jointed; prothorax large, free, often much enlarged; cerci short.

H. Front tibize with a terminal spine above on the outer side (except Arytropteris) . . . . . . . . . . . . . . . . . . . . . n h. e. the grooves in which the antennze lie) with the margins produced. ). PSEUDOPHYLL~NE ' Antenna1 scrobes with the margins hardly produced. . . . . . i i. Hind tibize without apical spines above. ) . . . . SAGfNIE Hind tibie with an apical spine above on one or both sides. . . J. j. Hind tibize with an apical spine only on the outer side above.

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