Hylogomphus adelphus
(Selys, 1858)
Mustached Clubtail
Gomphidae, Clubtail Family
Status-Global/State:
Distinguishing Characteristics:
This stocky yellow-green dragonfly, with black shoulder markings, varies in length from 1.7 to 1.8 inches. The male's abdomen is almost entirely black with small yellow markings. The female's abdomen is similar but the end is edged with yellow. Clubtail species are very similar to each other in some aspects; careful inspection is needed to identify them.
Description of Habitat/Range:
Common throughout eastern United States and southeastern Canada, this species is usually found at medium to large rapid streams, rivers, windswept lakes and ponds with rocky shores. It is widely distributed throughout northern two-thirds of Wisconsin.
Flight Season:
Late May to mid-August in Wisconsin.
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
25%
(95)
(95)
66%
(254)
(254)
6%
(24)
(24)
2%
(8)
(8)
1%
(2)
(2)
<1%
(1)
(1)
Shading illustrates monthly percentages of the total flight season records for the species.
Each flight season record is a unique date/location/observer combination where one or more adult or an
exuvia was recorded (excludes nymphs). The actual number of flight season records for each month is shown
in parentheses.
Flight seasons begin earlier in the southern part of the state, often by a week or more. Also, flight charts may not be accurate for rare species because of few data available.
Flight seasons begin earlier in the southern part of the state, often by a week or more. Also, flight charts may not be accurate for rare species because of few data available.
(Click on photos to enlarge)
Male mustached clubtail. © Dan Jackson
Male mustached clubtail
Male mustached clubtail. © Dan Jackson
Male mustached clubtail
Male mustached clubtail. © Andy Paulios
Male mustached clubtail
Female mustached clubtail. © Dan Jackson
Female mustached clubtail