 | 1869 - 748 páginas
...rubbing the inner surface of the hind legs against the outer surface of the wing-covers ; and fourth, by rubbing together the upper surface of the front...surface of the wing-covers. The insects which employ tinfourth method stridulate during flight, — the others while at rest. To the first group belong... | |
 | 1869 - 878 páginas
...surface of the wingcavers; and fourth, by rubbing together the upper surface of the front edge of th« wings and the under surface of the wing-covers. The...certain kinds of short-horned or jumping grasshoppers. The -sound* produced by the different groups vary in pitch, those of the crickets being shrillest,... | |
 | 1869 - 744 páginas
...rubbing the inner surface of the hind legs against the outer surface of the wing-covers; and fourth, by rubbing together the upper surface of the front...insects which employ the fourth method stridulate during flight,—the others while at rest. To the first group belong the Crickets; to the second the Green... | |
 | Alpheus Spring Packard - 1870 - 756 páginas
...rubbing the inner surface of the hind legs against the outer surface of the wing-covers ; and fourth, by rubbing together the upper surface of the front...while at rest. To the first group belong the Crickets (Gryllidae) ; to the second the Green or Long-horned Grasshoppers (Locustariit) ; to the third and... | |
 | Geological and Geographical Survey of the Territories (U.S.) - 1873 - 288 páginas
...by rubbing the inner surface of the hind legs against the outer surface of the elytra ; and, second, by rubbing together the upper surface of the front edge of the wings and the under surface of the elytra. According to Landois,* the inner surface of the hind femur is furnished along the lower margin... | |
 | 1874 - 418 páginas
...by rubbing the inner surface of the hind legs against the outer surface of the elytra; and, second, by rubbing together the upper surface of the front edge of the wings and the under surface of the elytra. According to Landois, the inner surface of the hind femur is furnished, along the lower margin,... | |
 | Alpheus Spring Packard - 1876 - 772 páginas
...nibbing the inner surface of the hind legs against the outer surface of the wing-covers; and fourth, by rubbing together the upper surface of the front...while at rest. To the first group belong the Crickets (Gryllidse) ; to the second the Green or Long-horned Grasshoppers (Locustarhe) ; to the third and fourth,... | |
 | Alpheus Spring Packard - 1879 - 750 páginas
...inner surface of the hind legs against the outer surface of the front wings (some locusts) ; third, by rubbing together the upper surface of the front edge of the hind wings and the under surface of the wing-covers during flight (some locusts). Order 4. Hemiptera.... | |
 | Norman Allison Calkins - 1882 - 482 páginas
...awhile with that. Some grasshoppers rub one wing-cover upon the veins of the other; some rub together the front edge of the wings and the under surface of the wing-covers. Crickets make their chirping sounds by rubbing the base of one wing -cover upon the veins running through... | |
 | John Henry Comstock, Anna Botsford Comstock - 1888 - 256 páginas
...species by means of a musical notation.* The second method of stridulation practised by locusts is by rubbing together the upper surface of the front...the wings and the under surface of the wing-covers. Those which employ this method stridulate during flight. Several common species pertaining to the CEdipodinae... | |
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... fourth, by rubbing together the upper surface of the front edge of the wings and the under surface of the wing-covers. 
