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Sympetrum obtrusum
White-Faced Meadowhawk
Family: Libellulidae
Species account author: Robert Cannings.
Extracted from Introducing the Dragonflies of British Columbia and the Yukon (2002)

Photograph

© Jeremy Gatten     (Photo ID #5940)

Map

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Distribution of Sympetrum obtrusum in British Columbia.
(Click on the map to view a larger version.)
Source: (for the static map) RBCM and BCCDC 2004 ©

Species Information


Description

Similar to the Cherry-faced Meadowhawk, except for the white face and dark wing veins. Immatures are yellow to yellow-brown that becomes red, especially on the abdomen, as males and some females mature. The thorax is unmarked, but the abdomen has black saw-toothed side stripes. The legs are black. Hamule shown in figure; vulvar lamina shown in figure. Length: ♂ 33 mm, ♀ 31 mm.


Flight Period

B.C., mid June to mid October.

Genus Description


Small to medium-sized dragonflies that are mostly yellow when young and mostly red when mature; one common species is black. Females are usually yellow or tan, but can be red like males. You can watch most species easily at close range, because the adults are not powerful flyers and perch often. They are frequently abundant around ponds and lakes and adjacent meadows, especially in the late summer and fall. Many species will perch on the ground; Sympetrum means “with (or on) the rocks”. Species can be difficult to distinguish. Look for the colour of the face, legs and wing veins; the patterns on the sides of the thorax and abdomen; and the details of the genitalia (the male’s hamules and the female’s vulvar lamina).

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

Probably the most common meadowhawk in most of southern B.C.; rare in the far northeast. Inhabits a variety of ponds, marshes and peatlands in valleys and mountains. More than most meadowhawks, it can be common in peatlands, and is often more associated with forested areas than the Cherry-faced, which reaches its greatest abundance in grasslands and open terrain.

Distribution


Transition. Widespread in B.C. as far north as Fort Nelson in the east and the Skeena River in the west.

Status Information

Origin StatusProvincial StatusBC List
(Red Blue List)
COSEWIC
NativeS5YellowNot Listed



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