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Tramea lacerata
Black Saddlebags
Family: Libellulidae
Species account author: Robert Cannings.
Extracted from Introducing the Dragonflies of British Columbia and the Yukon (2002)


Photograph

© Dennis Paulson     (Photo ID #1220)

Map

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Distribution of Tramea lacerata in British Columbia.
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Source: (for the static map) RBCM and BCCDC 2004 ©

Species Information


Description

The body is black with white or yellow spots on top of most abdominal segments; the spots darken with age, but remain on segment 7. The base of the hindwing has a broad black band. Length: ♂ ♀ 50 mm.


Flight Period

B.C., mid June to mid September.

Genus Description


These medium-sized to large dragonflies come in red, brown or black. Their bodies and wings are similar in shape to those of the rainpool gliders. The English name comes from the dark band or patch at the base of the hindwing that suggests a saddlebag. Egg laying involves a sort of dance – the male repeatedly releases his partner to dip her eggs into the water, then takes her up again. Most species are southern in distribution.

Biology

Family Description

The largest dragonfly family in our region – 24 species in eight genera live here and one other species in another genus is a rare visitor. They come in many sizes and colours, many with bold wing markings or coloured veins. Their eyes meet broadly on top of the head. The anal loop in the hindwing is distinctive: foot-shaped with a long toe. Most common around ponds, marshy lakeshores and sluggish streams, the adults dart about and most species spend a lot of time perched horizontally in the sun. Females lay eggs alone or in the company of guarding males. Most dip the tip of their abdomen into the water when releasing the eggs, but some will tap or splash the eggs into wet mud or moss, or simply flick them into a dry pond basin. Some larvae, like those of the emeralds, move sluggishly or squat on the bottom mud; others climb in vegetation.
Field Notes

First appeared in the Victoria area in 1995, then more often in 1996 and many times since; first bred in the Victoria area in 2006. Common south of B.C. Lives around ponds and lakes, but ranges widely. Usually seen flying and gliding; when perching, it usually hangs vertically or obliquely.

Distribution


Southern; also in Hawaii. Southern Vancouver Island; might also be expected in the Lower Mainland and the warm valleys of the southern interior, which are nearer to the breeding areas of central Washington.

Status Information

Origin StatusProvincial StatusBC List
(Red Blue List)
COSEWIC
NativeS2RedNot Listed



BC Ministry of Environment: BC Species and Ecosystems Explorer--the authoritative source for conservation information in British Columbia.