Download e-book for iPad: Advances in Ephemeroptera Biology by D. Dudley Williams (auth.), John F. Flannagan, K. Eric

By D. Dudley Williams (auth.), John F. Flannagan, K. Eric Marshall (eds.)

ISBN-10: 1461330661

ISBN-13: 9781461330660

ISBN-10: 1461330688

ISBN-13: 9781461330684

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This Pacific island some 400 km long x 40 km wide contains a mayfly fauna consisting entirely of Leptophlebiidae (except for some introduced Baetidae) representing about 20 new genera and over 65 species. The nymphs of these mayflies have adapted to many river and stream habitats and some superficially resemble nymphs of other mayfly families, such as Heptageniidae, Baetidae, Ephemerellidae and Ephemeridae. These Leptophlebiidae are being described in a series of papers (Peters et at. 1978, Peters and Peters, in press).

P) more than 25 (Fig. 2). (0) less than 25 (Fig. 3). Furcation 3: Clypeus: lateral margins 17-22) . A B (P) parallel (Fig. 17). (0) divergent (Fig. 19,20,22). (P) less than 4/5 (Fig. 17). (0) more than 4/5 (Fig. 19,20,22). (P) smoothly curved (Fig. 17). (0) abruptly to angularly curved (Fig. 19,20,22). (0) broad, with prominent denticles (Fig. 17-18). Mandible: outer margin (P) narrow (but may be cleft or hooded), denticles reduced (Fig. 19-23). (P) smoothly curved (Fig. 11). (0) angularly curved (Fig.

Cool mountain waters and regular periods of freezing weather prevail throughout the year. The warm-adapted group, referred to as the polystenothermal lowland fauna by lIlies (1969), occupies all tropical and other areas where a stable high water temperature is maintained. Prior to this investigation, Peters and Edmunds (1972) reported six cool-adapted leptophlebiid genera occurring in southern South America, three of which were newly established. We discovered six additional new genera making a total of twelve known to occur in this area.

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Advances in Ephemeroptera Biology by D. Dudley Williams (auth.), John F. Flannagan, K. Eric Marshall (eds.)

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