THE ISOLATING VALUE OF SPECIFIC SONG PATTERNS IN TWO SIBLING SPECIES OF GRASSHOPPERS (CHORT- HIPPUS BRUNNEUS THUNB. AND C. BIGUTTULUS L.) by A. C. PERDECK (Rijksmuseum van Natuurlijke Historie, Leiden; Instituut voor Oecologisch Onderzoek, Arnhem, Holland) (With 9 Figures) (Rec. 10-V-1957) CONTENTS Page I Introduction .............. 2 II Degree of isolation ............ 5 i. Morphological characters (C. rraollis Charp. included) .... 5 2. Differences in the song patterns ........ 8 3. Hybridisation in nature ..... , ..... 15 5 4. Notes on geographical variation; Chorthippits brunneus brevis Klingstedt 18 5. Remarks on the relation between the structure of the sound
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THE ISOLATING VALUE OF SPECIFIC SONG PATTERNS IN TWO SIBLING SPECIES OF GRASSHOPPERS (CHORT- HIPPUS BRUNNEUS THUNB. AND C. BIGUTTULUS L.) by A. C. PERDECK (Rijksmuseum van Natuurlijke Historie, Leiden; Instituut voor Oecologisch Onderzoek, Arnhem, Holland) (With 9 Figures) (Rec. 10-V-1957) CONTENTS Page I Introduction .............. 2 II Degree of isolation ............ 5 i. Morphological characters (C. rraollis Charp. included) .... 5 2. Differences in the song patterns ........ 8 3. Hybridisation in nature ..... , ..... 15 5 4. Notes on geographical variation; Chorthippits brunneus brevis Klingstedt 18 5. Remarks on the relation between the structure of the sound
All Time | Past Year | Past 30 Days | |
---|---|---|---|
Abstract Views | 612 | 103 | 5 |
Full Text Views | 103 | 9 | 0 |
PDF Views & Downloads | 28 | 13 | 0 |