Dendroides canadensis

Fire-colored Beetle Dendroides canadensis male came to moth lights, July 11, 2012, Wheatley, Ontario.

Fire-colored Beetle
Dendroides canadensis

Fire-colored Beetle Dendroides canadensis male came to moth lights, July 11, 2012, Wheatley, Ontario.
Fire-colored Beetle Dendroides canadensis male came to moth lights, July 11, 2012, Wheatley, Ontario.

Identification:
Head: Upper face and eyes dark; lower face reddish-orange. Hugh eyes. Male eyes touching well before top of head. Female eyes have a black, rough (punctured) area between them. Whiskers (palpi) light orange.
Antenna: Long, dark and branched (pectinate). Branches on female about as long as a segment, or shorter. Male branches two to three times longer than a segment.
Thorax (Pronotum): Reddish-orange, rough (punctured); widest at middle, then slightly tapered to wings. Male thorax narrower than female’s.
Wings (Elytra): Long, dark, short brown hair. Center base of wings (scutellum) red, triangular. Male has straight sides, female widens out near tip.
Legs: Reddish-orange entirely.
Abdomen: Reddish-orange on underside.

Size: 7 to 16 mm. (males small)

Habitat: Deciduous forests.

Food: Night feeders attracted to rotting fruits.

Flight Time: June to July

Fire-colored Beetle Dendroides canadensis larvae on fallen log. April 13, 2006, Wheatley, Ontario.
Fire-colored Beetle Dendroides canadensis larvae on fallen log. April 13, 2006, Wheatley, Ontario.

Life Cycle: Females lay eggs on bark of dead or rotting trees like Oak and Apple. Larvae develop in the dead wood, feeding on fungi like Amillaria Root Rot fungus Amillaria nigra. Larvae yellowish with black to greenish line down centre of entire body. Head and abdomen tip reddish-orange. Two dark tails at tip. One generation per year.

Comments: Essex County – Point Pelee National Park and Ojibway Prairies. Kent County – Rondeau Provincial Park. Widespread in Ontario – common.

Synonyms: Latreille 1810
Dendroides cyanipennis, Pogonocerus bicolor, Dendroides bicolor

References:
The Entomologists Magazine (not Ent Monthly Magazine), 1837-38, Vol. 5 by Newman, pg. 375.
Proceedings of the Academy of Natural Sciences of Philadelphia, 1854-55, Vol. 7: Synopsis Pyrochroides of U.S. by LeConte, pg. 270.
Transactions of the American Entomological Society, 1888, Vol. 15 by Horn, pp. 46 to 48.
Beetles of Indiana, 1910 by Blatchley, pg. 1349.
Annals of the Magazine of Natural History, 1914, Series 8, Vol. 13 by Blair, pg. 313.
Psyche, 1932, Vol. 39 by Barber, pg. 36.
Entomological News, 1931, Vol. 42 by Payne, pp. 13 to 14.
Checklist of Beetles in Canada, 1991 by Bousquet, pg. 227.
Beetles of Eastern North America, 2014 by Evans, pg. 374.

Types: Unknown.

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