Oak-specialist
Guides
Phyllonorycter rileyella
Phyllonorycter rileyella is a minute leaf-mining moth in the family Gracillariidae, described by Chambers in 1875. The species is known from scattered localities in the eastern and central United States. Its larvae create mines in oak leaves, with confirmed host records from multiple Quercus species. Adults are among the smallest moths in North America, with a wingspan of only 6–8 mm.
Platycotis vittata
Oak Treehopper
Platycotis vittata, commonly known as the oak treehopper, is a North American treehopper species in the family Membracidae. It is an obligate specialist on oak trees (Quercus spp.) and exhibits notable presocial behavior including maternal care of eggs and nymphs. Adults are 9–13 mm in length with variable coloration ranging from sea green to bronze, olive green, or pale blue with red dots or four lengthwise stripes. The species is bivoltine, producing two discrete generations in early spring and autumn, with females of both generations entering diapause. Males locate and court females using substrate-borne vibrational signals.
Psaphida
Psaphida is a genus of owlet moths in the family Noctuidae, established by Francis Walker in 1865. Species in this genus are primarily North American, with most distributed across the eastern and central United States and southern Canada. One species, P. palaearctica, occurs in Shaanxi, China. The genus includes early spring-emerging species such as Roland's Sallow (P. rolandi), which has been documented to exhibit extended pupal diapause lasting up to seven years.
Purpuricenus paraxillaris
White Oak Branch Girdler
Purpuricenus paraxillaris is a large, showy longhorned beetle (family Cerambycidae) described by Ted C. MacRae in 2000 from specimens collected in Missouri. It was the first new species discovered by the author using fermenting bait traps. The species closely resembles P. axillaris but is larger and more robust, with reddish rather than pale orange elytral markings, more developed pronotal tubercles with polished apical lines, and distinctly dentate elytral apices. It is attracted to fermenting baits and has been documented across the eastern United States.
Stigmella altella
Stigmella altella is a minute leaf-mining moth in the family Nepticulidae, known from Ohio and Maine in the United States. The species has a wingspan of 5.6–6.4 mm. It completes one generation per year in Ohio, with larvae mining oak leaves in autumn and adults emerging the following spring. The larvae are specialized feeders on two oak species: Quercus imbricaria and Quercus palustris.
Stigmella quercipulchella
Stigmella quercipulchella is a pygmy moth in the family Nepticulidae. The species is a leaf miner whose larvae feed on oak species (Quercus), creating distinctive tunnels within leaves. It occurs in the eastern United States and southern Ontario, Canada. The species has two generations per year.
Stigmella saginella
Stigmella saginella is a minute moth in the family Nepticulidae, commonly known as pygmy moths or microlepidoptera. The species is native to North America and has been documented across a broad geographic range spanning the eastern United States, parts of the Midwest, California, and southeastern Canada. Larvae are leaf miners that feed exclusively on oak species (Quercus), creating distinctive tunnels within leaf tissue.
Stigmella variella
Stigmella variella is a pygmy moth in the family Nepticulidae, characterized by its small size and leaf-mining larval habit. The species is known from California and Arizona, where larvae feed on three oak species. Adults have a wingspan of 5.5–7.5 mm. Two to three generations occur annually in California, with active leaf mines present from July to early September and February to April.
Telamona concava
Telamona concava is a species of treehopper described by Asa Fitch in 1851. It is found in eastern North America during summer months. The species feeds specifically on white oak (Quercus alba) and black oak (Quercus velutina). Like other members of the family Membracidae, it possesses a highly modified, enlarged pronotum that extends over the body.
Tragidion deceptum
Tragidion deceptum is a longhorned beetle (Cerambycidae) described by Swift & Ray in 2008 during a comprehensive taxonomic revision of the genus. It occurs in montane habitats of the southwestern United States and northern Mexico, where it breeds in recently dead oak branches. The species exhibits Batesian mimicry of tarantula hawk wasps (Pompilidae: Pepsis, Hemipepsis), with bright orange-red and black coloration. It is one of several Tragidion species historically confused under the name T. 'annulatum' prior to the 2008 revision.
Xantholobus muticus
Xantholobus muticus is a North American treehopper in the family Membracidae, subfamily Smiliinae. Adults measure 7–8 mm in length and exhibit variable coloration from black to pale yellowish-brown. The species is strictly associated with oak trees (Quercus spp.), feeding exclusively on their sap. It ranges across eastern and central North America from Manitoba to Quebec and south to Texas and Florida.
Xestobium rufovillosum
Deathwatch Beetle
Xestobium rufovillosum, commonly known as the deathwatch beetle, is a wood-boring beetle native to Europe that has been introduced to North America. The species is notorious for infesting structural timbers in historic buildings, particularly oak. Adults produce a distinctive rhythmic tapping sound by striking their heads against wood, which functions as a mating signal. The beetle requires wood that has been partially decayed by fungi and cannot attack sound, dry timber.
Zanclognatha martha
pine barrens zanclognatha, Martha's zanclognatha, Pine Barrens Fan-foot
Zanclognatha martha is a small litter moth in the family Erebidae, described by William Barnes in 1928. The species occurs across the eastern United States, from Ohio to Maine and southward to Texas, with disjunct populations in the Appalachian Mountains and Coastal Plain. It is listed as threatened in Connecticut, where it has one generation per year. The species is associated with pine barrens and similar habitats where its larval host plant, bear oak (Quercus ilicifolia), occurs.