Sympetrum
madidum
(Red-Veined Meadowhawk)
Description:
Naiad-
This is a small naiad with a length of 5/8 inch (16 mm). It is mottled green
and brown in color. The abdomen has several slender, slightly curved hooks along
the top, and the last two abdominal segments have a single, rear-facing spine
on each side. The nymphs of this species and those of the Striped Meadowhawk
(Sympetrum pallipes) are extremely difficult to tell apart.
Adult- This
is a medium-sized dragonfly (but large for this genus) with a length
of 1 5/8 to 1 13/16 inches (40 to 45 mm). The abdomen is quite slender. This
species is distinguished from other Sympetrums by the gold to red clouding of
its wings and red wing veins. Males
are red on the face and abdomen, while the thorax is dark and marked with two
yellow spots on each side. Females
are yellowish brown. Each side of the thorax
is marked with a pair of yellowish white stripes, and the top of the abdomen
is marked with horizontal and vertical lines, making it appear much like a plaid
pattern.
Range:
This species occurs from
the Northwest Territories of Canada east to Manitoba, extending south into the
U.S. to northern California, Idaho, and Montana. In Idaho, it has only been
documented to occur in the southeastern part of the state.
Habitat:
This dragonfly can be
found near shallow, marshy ponds and lakes.
Adult Flight Season:
Mid-June to mid-September
Diet:
Naiad-
Naiads feed on a wide variety of aquatic insects, such as mosquito larvae, other
aquatic fly larvae, mayfly larvae, and freshwater shrimp. They will also eat
very small fish and tadpoles.
Adult-
The dragonfly will eat almost any soft-bodied flying insect including mosquitoes,
flies, small moths, mayflies, and flying ants or termites.
Ecology:
The naiads live in debris
on the bottom of ponds and lakes. They do not actively pursue prey but wait
for it to pass by, a strategy which affords them protection from other predators.
Naiads emerge as adults at night. Although records are sparse, adults of this
species are believed to fly from mid-June to mid-September. They hunt flying
insects from perches on rocks or bare branches. The Latin name for this genus,
Sympetrum, means "with rock" and refers to their habit of basking on rocks to
absorb heat early in the day. This species seems to be relatively uncommon over
most of its range.
Reproduction:
The female flies with
the male still attached after mating (a position called "in tandem") and lays
her eggs in shallow lakes and ponds by dipping the tip her abdomen on the surface
of the water.
Conservation:
Populations
are widespread, abundant, and secure.
Status: | Unprotected nongame species |
Global Rank: | G5 |
State Rank: | S? |
References:
Corbet, P. S. 1999.
Dragonflies: Behavior and Ecology of Odonata. Cornell University Press, Ithaca,
New York, USA, 829pp.
Logan, E. R. 1967. The Odonata of Idaho. Unpublished M. S. thesis. University of Idaho, Moscow, Idaho, USA, 105 pp.
Needham, J. G. and M. J. Westfall. 1955. Dragonflies of North America. University of California Press, Berkely, California, USA, 615 pp.
Paulson, D. R. 1999. Dragonflies of Washington. Seattle Audubon Society, Seattle, Washington, USA, 32 pp.
Walker, E. M. and P. S. Corbet. 1975. The Odonata of Canada and Alaska, Vol. III. University of Toronto Press, Toronto, Ontario, Canada, 307 pp.