Resources

The plum curculio (Conotrachelus nenuphar) is the most serious insect pest of apples and among the most destructive insect pests of peaches. It also…

The Balsam gall midge (Paradiplosis tumifex), also known as the Balsam fir needle gallmaker, causes damage to balsam fir Christmas trees in many…

Carpenter ants (Camponotus spp.), along with termites, are the most troublesome structural pest in New Hampshire. Four species live in the state,…

The spongy moth (Lymantria dispar) is an important defoliating insect of hardwoods in New Hampshire. A native of Europe and Asia, the spongy moth was…

The boxelder bug, Boisea trivittata, feeds primarily on pistillate (female) and seed bearing boxelder trees by sucking sap from leaves, tender twigs…

Introduction Wood ash has a long history of use in New England. Our Yankee ancestors used wood ash to make lye for soaps, to clean glass, silver…

    These maps are the results of 27 years of surveying by Dr. Alan Eaton for Blacklegged ticks (Ixodes scapularis). Black legged ticks occur in all…

Dutch elm disease is caused by two closely related fungi, Ophiostoma ulmi or O. novo-ulmi. The fungi are spread from tree to tree by elm bark beetles…

A number of sawfly species are important defoliating pests of ornamental trees in New Hampshire. The damage is done by the larvae which are…

There are two families of ticks, the Ixodidae (hard ticks) and Argasidae (soft ticks). Those of importance to hikers, campers, and pet owners are in…

The fall webworm (Hyphantria cunea) and the Eastern tent caterpillar (Malacosoma americanum) feed on fruit, shade, and woodland trees. They are of…

In appearance, scales in general show little resemblance to typical insects. They are well protected by the waxy, almost impermeable shell they live…

Most spruce trees are damaged by one of two species of adelgids: the Eastern spruce gall adelgid (Adelges abietis) and the Cooley spruce gall adelgid…

Powdery mildew occurs most commonly on the cool-season grasses such as bluegrasses and fescues, especially in shaded areas or areas with poor air…

Sclerotinia dollar spot is a fungal disease that affects most of the coolseason grasses such as bluegrass, ryegrass, fescue and bentgrass. The…

The birch leaf miner (Fenusa pusilla) feeds primarily upon three host plants: gray birch, paper birch, and European white birch. This European native…

The bluegrass billbug (Sphenophorus parvulus) was first reported in the United States almost 100 years ago in Nebraska. Since then, it has become a…

The bronze birch borer (Agrilus anxius) is found throughout the birch range in the U.S. and Canada. It attacks and breeds in paper birch, yellow…

Fungal leaf spots caused by Dreschslera spp. are common on bluegrass, bentgrasses, fescues, and ryegrasses. Leaf spot symptoms on bentgrass (…

Hairy chinch bugs, (Blissus leucopterus), are probably the most destructive pest of home lawns. The adults are small (1/16" long), black with…