Cerastipsocus venosus

Barklice
Cerastipsocus venosus

Barklice Cerastipsocus venosus on Queen Anne's Lace August 10, 2014, Wheatley, Ontario.
Barklice Cerastipsocus venosus on Queen Anne’s Lace August 10, 2014, Wheatley, Ontario.

Native: Essex & Kent County

Identification:
Head: Shiny, brown-black to light brown. Eyes light green.
Antenna: Base (scape) pale. Segments thin, black; twice as long as body. Thicker on male.
Thorax: Brown-black to light brown; some yellowish lines on outer edges.
Wings: Brown-black with white  veins and a white to dark gray triangle stigma, usually darker on male. Tips iridescent in certain lights.
Legs: Thighs (femora) brownish-yellow, shins (tibiae) and feet darker.

Barklice Cerastipsocus venosus came to moth lights July 28, 2011. Wheatley, Ontario.
Barklice Cerastipsocus venosus came to moth lights July 28, 2011. Wheatley, Ontario.

Abdomen: Dark brown with white to light yellow on segment edges.

Size: 7 to 8 mm long.

Flight Time: July and August

Habitat: Trees, usually encountered as a large group.

Food: Lichen, fungi, dead bark.

Life Cycle: Over-winters as an egg. Eggs are clustered and usually covered with silver-gray excretions, laid on bark, usually. Nymphs have 4 to 6 molts. All stages of nymphs are gray to brown with yellow bands on abdomen; similar to adults with no wings. Nymphs mature in late July, early August. Often found in large flocks on tree trunks and branches. If disturbed, they will all move away together, seldom flying. Attracted to light at night.

Barklice Cerastipsocus venosus on Spruce tree August 03, 2008 Wheatley, Ontario.
Barklice Cerastipsocus venosus on Spruce tree August 03, 2008 Wheatley, Ontario.

Comments: Essex County – Ojibway Prairies Kent County – Rondeau Provincial Park

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

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