Celithemis Hagen,1861 -Pennants


Figure 1: Celithemis fasciata (monomelaena)larva (3x, dorsal view),
collected from Third Sister Lake, Washtenaw Co., MI, on 12 June 1934by J. W. Leonard. UMMZODO-0862.

Notes -Michigan SpeciesList - Key -References
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Page last updated: 19August 1998 (EB)

Notes on theMichigan Species of Celithemis

Three of the ten North American species ofCelithemishave been recorded in Michigan. Both C.elisa and C. eponina are widelydistributed in both peninsulas, whereas records for C. fasciata exist only forthe southern LP (see maps below).

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 Celithemis are only finelycrenate, with dentations much less pronounced than other corduliids.Emergence of adults in Michigan in June through early July, andexuvia are often found clinging to vegetation emerging up from water(Leonard1934, pers. obs.).

Other links with information on the biology orecology of larval Celithemis:
Briefhabitat notes from Ottawa (Ontario, Canada) >>http://www.cyberus.ca/~jdsankey/odon2.html

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Michigan SpeciesList

Map 1Map2Map 3

Celithemis elisa (Hagen,1861) - Calico Pennant - Map1
Celithemis eponina
(Drury, 1773) - Halloween Pennant - Map 2
Celithemis fasciata (
syn.monomelaena) Kirby, 1889 - Banded Pennant - Map 3

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Key tothe Mature Larvae of Michigan Celithemis
(References:
Needham and Westfall1955, Daigle 1992)

1a. Eyes tapering to anacutely conical, pointed tip (picture) - C. fasciata

Fig.1a1
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) - 2

Fig.1b1
Fig. 1b1:
Celithemiselisa larva (12.5x, dorsalview), collected from Craig Lake, Branch Co., MI, on 28 June 1938 byBrown and Ball. UMMZODO-1536.


2a.(1b). Length of mature larva 19 mm or more; lateralspines of Ab9 > 2x it's middorsal length - C. eponina

2b. Length ofmature larva < 19 mm; lateral spines of Ab9 not more than 2x it'smiddorsal length; epiproct about 0.7x the length of paraprocts -C. elisa
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References

Daigle, J. J. 1992.Florida dragonflies (Anisoptera): a species key to the aquatic larvalstages. State of Florida, Department of Environmental RegulationTechnical Series 12(1):iv, 1-29.

Drury, D. 1773.Illustrations of natural history. Vol. 2. White: London. 90pp.

Hagen, H. A. 1861.Synopsis of the Neuroptera of North America, with a list of the SouthAmerican species. SmithsonianMiscellaneous Collections4:1-347.

Kirby, W. F. 1889. Arevision of the subfamily Libellulinae with descriptions of newgenera and species. Transactions of theZoological Society of London12:249-348.

Leonard, J. W. 1934.The naiad of Celithemis monomelaenaWilliamson (Odonata: Libellulidae).Occasional Papers of the Museum ofZoology, University of Michigan 297. 5pp.

Needham, J.G., and M. J. Westfall. 1955. A Manual of the Dragonflies of NorthAmerica (Anisoptera). University of California Press: Berkeley,California. x + 615 pp.

Walker, E. M.,and J. S. Corbet. 1975. The Odonata of Canada and Alaska, Vol. 3.University of Toronto Press: Toronto. xvi + 308 pp.

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