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Clover Mites

You may have come across a Clover Mite (Bryobia praetiosa) either on your lawn, in the woods or inside your house.  While they are closely related to ticks, there is no cause for alarm as they do not bite and are not harmful to humans.  These tiny, pin head-size mites feed on the sap of clover, grasses and roughly 200 other flowering plants.

All Clover Mites are female — they reproduce parthenogenetically and do not need males in order for their eggs to be viable. The (up to 70) eggs they lay and the larvae are bright red, while adults are reddish-brown. Clover Mites are extremely common this time of year, as well as in the fall.

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Winged Female Woolly Aphids Leaving Sumac Leaf Galls

10-29-14 sumac leaf galls IMG_7549The sac-like galls found on Staghorn and Smooth Sumac are anywhere from marble- to ping pong ball-size, and usually become obvious in late summer when they often acquire a rosy pink blush. Inside the thin walls of these galls is one big hollow cavity, teeming with tiny orange woolly aphids (Melaphis rhois). In the spring, female aphids lay an egg on the underside of a sumac leaf, causing the plant to form an abnormal growth, or gall. A number of parthenogenic generations are produced inside the gall, and then in late summer or early fall, the winged females fly to patches of moss, where they establish asexually reproducing colonies. According to biologist D.N.Hebert, these colonies produce the males and sexual females responsible for recolonizing sumac each spring.

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