Hemerobius stigma

Brown Lacewing
Hemerobius stigma

Brown Lacewing Hemerobius stigma
Brown Lacewing Hemerobius stigma at moth light July 12, 2013 Wheatley, Ontario.
Brown Lacewing Hemerobius stigma
Brown Lacewing Hemerobius stigma at moth light Oct 04, 2012 Wheatley, Ontario.
Brown Lacewing Hemerobius stigma
Brown Lacewing Hemerobius stigma at moth light Sep 16, 2012 Wheatley, Ontario.
Brown Lacewing Hemerobius stigma
Brown Lacewing Hemerobius stigma at moth light Sep 16, 2012 Wheatley, Ontario.
Brown Lacewing Hemerobius stigma
Brown Lacewing Hemerobius stigma at moth light Oct 02, 2013. Wheatley, Ontario.

Identification:
Head: Head reddish-brown, shiny. Eyes dark brown. Top of head may be somewhat lighter.
Antenna: Long, yellow ringed with dark.
Thorax: Dark reddish-brown, shiny. Neck (pronotum) may have a faint, pale stripe down center.
Wings: Light reddish-brown to yellowish-brown. Veins dotted with cream-colour dots that appear raised or bubble-like along the veins. Stigma at end of costal area has a reddish tint.
Legs: Yellowish-brown, feet slightly darker.
Abdomen: Dark yellowish-brown abdomen. No marks.

Main ID: Veins dotted with cream-colour dots that appear raised or bubble-like along the veins.

Similar Species: The Striped Brown Lacewing Hemerobius humulinus has shorter antenna, yellow thorax, dark patches on the wings and obvious stripe from eyes continuing down sides of neck (pronotum).

Size: 8 to 11 mm to wing tip.

Flight Time: April to May, again September to October.

Habitat: Forests and orchards. Prefers coniferous forests – especially pine.

Food: Prefers the balsam twig aphid Mindarus abietinus in Christmas tree plantations, also Woolly aphid Adelges piceae and Pine Bark Aphid Pineus strobi.

Life Cycle: This species has either two generations, or it hibernates as an adult during the summer. Also over-winters as an adult or pre-pupa. In early spring, the adults mate and eggs are deposited about two weeks later. The adult females and the eggs are extremely cold-tolerant (Garland 1981b). Eggs are laid singly, on fir needles or between bud scales. Eggs hatch in about 11 days, depending on the temperature.
Parasite: Gall Wasp Anacharis species.

Comments: Essex County – Point Pelee. Kent County – Rondeau Provincial Park.

For information on synonyms, references and type specimens see next page

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