Three of the ten North American species ofCelithemishave been recorded in Michigan. Both C.elisa and
Larvae are often found in lakes and ponds withaquatic vegetation, though sometimes specimens are taken from stillor slow-moving sections of streams among macrophytes. Thesemedium-sized, thin-legged, delicate greenish larvae (Figure 1) aredistinguished from our other libellulids by the lack of middorsalspines on abdominal segment 8, and the long lateral spines ofabdominal segments 8 and 9, the latter of which are twice the lengthof segment 8 and extend to or past the tips of the paraprocts. Infact, these characters together with the rather long length of thecerci (about 0.5x length of the paraproct) and the rather truncateshape of the end of the abdomen may confuse some with corduliids.However, the margin of the lateral lobes of
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Fig. 1a1: Celithemis fasciata(monomelaena)larva (12.5x, dorsal view), collected from Third Sister Lake,Washtenaw Co., MI, on 12 June 1934 by J. W. Leonard.UMMZODO-0862.
1b. Outer edgeof eyes rounded laterally (picture) -
Fig. 1b1: Celithemiselisa larva (12.5x, dorsalview), collected from Craig Lake, Branch Co., MI, on 28 June 1938 byBrown and Ball. UMMZODO-1536.
2b. Length ofmature larva < 19 mm; lateral spines of Ab9
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Leonard, J. W. 1934.The naiad of Celithemis monomelaenaWilliamson (Odonata: Libellulidae).Occasional Papers of the Museum ofZoology, University of Michigan 297. 5pp.
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Walker, E. M.,and J. S. Corbet. 1975. The Odonata of Canada and Alaska, Vol. 3.University of Toronto Press: Toronto. xvi + 308 pp.