THE IMMATURE STAGES OF PTYCHOPTERA LENIS LENIS (DIPTERA: PTYCHOPTERIDAE) WITH NOTES ON THEIR BIOLOGY
1973 ◽
Vol 105
(8)
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pp. 1091-1099
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AbstractThe four larval instars and the pupa of Ptychoptera lenis lenis Osten Sacken are described. Instars 2 to 4 are very similar morphologically but instar 1 is markedly different. Both a pharate pupal and a pharate adult stage were observed. Larvae are found in stagnant marginal areas of ponds where water depth does not exceed 4 cm and where benthic deposits of plant detritus exceed 8 cm. Fourth instar larvae, under experimental conditions, survived up to 45 days without contact with atmospheric oxygen but development was arrested. P. lenis has a 1 year life cycle with an extended adult emergence season from late May to the end of July.
2015 ◽
Vol 24
(3)
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pp. 357-360
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2007 ◽
Vol 67
(1)
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pp. 173-177
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1980 ◽
Vol 95
(1)
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pp. 203-212
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1960 ◽
Vol 51
(1)
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pp. 25-31
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Keyword(s):
2010 ◽
Vol 19
(3)
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pp. 164-168
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1971 ◽
Vol 103
(12)
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pp. 1705-1715
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1968 ◽
Vol 58
(1)
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pp. 1-24
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