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Species Patalene olyzonaria - Juniper-twig Geometer - Hodges#6974

Juniper-twig Geometer - Patalene olyzonaria Juniper-twig Geometer Moth - Hodges #6974 - Patalene olyzonaria Juniper-twig Geometer Moth - Hodges #6974 - Patalene olyzonaria - male Juniper-twig Geometer - Patalene olyzonaria Juniper twig geometer - Patalene olyzonaria - female unknown moth - Patalene olyzonaria Juniper twig Geometer Hodges #6974 - Patalene olyzonaria - female juniper-twig geo - Patalene olyzonaria
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Geometroidea (Geometrid and Swallowtail Moths)
Family Geometridae (Geometrid Moths)
Subfamily Ennominae
Tribe Ourapterygini
Genus Patalene
Species olyzonaria (Juniper-twig Geometer - Hodges#6974)
Hodges Number
Other Common Names
Juniper Twig Geometer
Synonyms and other taxonomic changes
Patalene olyzonaria (Walker, 1860)
one of 3 species in this genus in North America listed at All-Leps
wingspan 21-25 mm, based on citation by Charles Covell (1) and photo by Jim Vargo at MPG
larva to 30 mm
Adult: color variably orangish, pinkish, or reddish-brown. Forewing hooked at tip, moreso in female than in male. Postmedial line prominent and sharp, hooking back near costa. Discal dot on forewing situated closer to AM line than PM line, sometimes almost touching AM line. Some specimens have two large dark spots in lower subterminal area of forewing (see illustration in Covell, plate 54 #10. (1)) and some others have a large dark blotch in lower subterminal area of both wings (see photos at CBIF). Hindwing outer margin smoothly rounded, and PM line straight.
Specimens identified by DNA analysis:

[compare similar species in See Also section below]

Larva: body brownish or grayish with dark angular lines dorsally and laterally, creating a diamond-shaped pattern; whitish patches below angular lines in subdorsal area; pair of black dorsal warts on ninth abdominal segment; head brown and gray with dark brown herringbone pattern on lobes
Quebec and New Hampshire to Florida, west to Texas, north to Wisconsin
Presumably successional pine/juniper woodlants, forest edges, with hostplants
adults fly from April to November (1)
mature larvae present from June to October in New England
Larvae feed on juniper (Juniperus spp.), occasionally Northern White Cedar (Thuja occidentalis), and possibly pine.
Life Cycle
Two to three generations per year. Egg probably overwinters.
Larva; larva; pupa; adult
See Also
Confused Eusarca (Eusarca confusaria) forewing discal dot situated about half-way between AM and PM lines, not close to AM line (compare images of both species at CBIF), the short upper section of its PM line (near costa) is missing or faint, and overall color is usually pale tan or light brown
Curve-toothed Geometer (Eutrapela clemataria) hindwing outer margin is scalloped or wavy, not rounded
Large Maple Spanworm (Prochoerodes lineola) outer margins of wings angular (not rounded) with shallow point near middle, and short upper section of forewing PM line curves outward, not inward
Rose Hooktip (Oreta rosea) brown form has wavy or irregular PM line on hindwing, not straight as in Juniper Geometer
species of Oxydia have black patches in upper (not lower) subterminal area of hindwing (see photos by Bob Belmont at MPG)
species of Synaxis and Tetracis have a completely straight PM line on forewing, not hooked near costa
Print References
Covell, p. 372, plate 54 #10 (1)
Internet References
Forest Pests live larva image plus common name reference [Juniper Geometer], description, foodplants, biology, seasonality (C.T. Maier et al, USDA Forest Service,
Georgia Lepidoptera 3 pinned adult images showing variability (James Adams)
Dallas Butterflies pinned adult image (Dale Clark, Texas)
Maryland Moths adult images (Larry Line, Maryland)
Works Cited
1.Field Guide to Moths of Eastern North America
Charles V. Covell, Jr. 2005.