Micromus posticus

Brown Lacewing
Micromus posticus

Brown Lacewing Micromus posticus
Brown Lacewing Micromus posticus on curtain in house, Nov 02, 2011 Wheatley, Ontario.
Brown Lacewing Micromus posticus
Brown Lacewing Micromus posticus at moth light, July 08, 2011 Wheatley, Ontario.
Brown Lacewing Micromus posticus
Brown Lacewing Micromus posticus at moth light, July 08, 2011 Wheatley, Ontario.

Identification:
Head: Light reddish-brown to yellowish. No dark marks.
Antenna: Yellowish-white. Tips slightly darker.
Thorax: Light reddish-brown with a few light spots.
Wings: Light with dark flecks, darker at base; almost checkered along upper (inside) border. Two thin diagonal dark lines, one mid-wing and one nearer wing tip which has another line jutting off at a right angle, sometimes touching the first diagonal line. Veins pale yellowish-brown with dark flecks.
Legs: Pale yellowish, toes darker. Front and mid shins (tibiae) may have one or two faint dark bands on each leg.
Abdomen: Dark reddish-brown.

Similar Species: Micromus subanticus has longer, narrower wings and a dark mark on each side of the face. Micromus angulatus has three diagonal stripes, two with right angles off them.

Size: 6 to 9 mm to wing tip.

Flight Time: March and April, again in July to November.

Habitat: Forest edges, both deciduous and conifer; meadows.

Food: Aphids and other soft-bodied insects.

Life Cycle: Females can lay up to approximately 60 eggs per day. . Larvae have 3 instars. Larva do not cover themselves with debris. Adults live about 3 weeks. Assumed that adults over-winter.  4 to 5 generations per year.
Parasites: Ichneumon Wasp Charitopes mellicornis

Comments: Essex County – Point Pelee National Park, Erie Islands and Ojibway Prairies. Kent County – Rondeau Provincial Park. LaSage in Biodiversity Data Journal, 2013, Vol. 1 believes M. posticus is rare. Only 23 specimens collected in Ontario in the last 100 years.

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

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