The Browns/Satyrs/Wood Nymphs (BSWNs) are a group of butterflies that can be a bit troublesome to identify in the field. As the name implies, they tend to be gray-to-brown, and the eyespots on their wings are their main markings. Adult Browns don’t stray far from the habitats that support their caterpillars.
Wisconsin’s first Emerald Ash Borer infestation was discovered in the summer of 2008 on property adjacent to Riveredge Nature Center, just three miles from the BugLady’s home. EABs had been nibbling at the state’s north and south borders for several years, and their leapfrogging of several counties into Ozaukee County was a surprise. Since that date, they have been found elsewhere in the southern half of the state (go to Wisconsin’s Emerald Ash Borer Information Resource and click on the link labeled “Map”).
“Snake spit,” “Cuckoo Spit,” and “Frog spit” are names for these bubbly masses of foam that are seen on grasses, wildflowers, and even in trees. They are manufactured by the nymph (immature form) of a critter called a froghopper or Spittlebug, a bug whose immature stage is better known than its adult. Spittlebugs overwinter as eggs and hatch in spring.
Pond snails are found in the Class Gastropoda (“Belly foot”) along with slugs, limpets, moon shells, whelks and conchs. Gastropods began life in the ocean, some 500,000,000 years ago, plus or minus, and today’s representatives are found from deep ocean trenches to mountain tops and from deserts to mudflats to gardens. North America boasts more than 500 species of freshwater snails.
Today’s episode considers three small, blue “look-alike” butterflies—the Spring Azure and the Summer Azure, often referred to as the Spring Spring Azure and the Summer Spring Azure, and the Eastern Tailed Blue. The Spring Azures have long been considered to be one large and gloriously diverse species made up of several sub-species. Now they’re thought by many to be a number of full species.
The Plume Moth is a smallish moth (½” to 1 ½” wingspread) that is pretty easy to walk past, since it’s disguised as a piece of dried vegetation. All are known for their slim bizarre wings, which are deeply divided into fringed lobes. The hind wings generally have three lobes, and the forewings two, but when they are at rest, they roll the lobes of each wing together until they resemble twigs. Plume moths are found all over the world, and their flight periods include most of the warm months. The adults are often found on flowers, feeding on nectar and pollen, right out in the open.
A genuine, sometimes tentative, sign of spring in the Cedarburg Bog is the reappearance of dragonflies, but the first sightings may not be of local individuals. Common Green Darners migrate south in fall and repopulate the north country each spring. The Green Darners that deliver the spring lay eggs that hatch into naiads that take the whole summer to mature. These offspring will make the trip south in fall. Chalk-fronted Corporals are northern dragonflies that emerge in early May.
Cabbage Whites/Cabbage butterflies are among the first butterflies to appear that have actually emerged from a chrysalis in the current year, and they are followed soon afterward by the closely-related Sulphurs. These medium-sized (2” wingspan) white or yellow butterflies may be monochromatic or they may add black wing tips and some spots. Adults are strong fliers that nectar at a variety of flowers. They are most active during mid-day in open/cleared/weedy/cultivated/fields/meadows/gardens/road edges in cities and suburbs and rural areas
Mining Bees are medium-sized bees, many of which may be seen early in the year, when there is still snow around the edges. Mining bees are important pollinators. The adults eat nectar (many are picky consumers of just a few plants) and they provide both nectar and pollen for their larvae.
Buck moths can be found in the Cedarburg Bog in October. Like many of their larger silk moth relatives, the adults do not feed. When they are startled, they are as likely to fold their wings and drop into the vegetation below as they are to fly away. Female buck moths lay a cuff of eggs on the twig of a larval food plant in fall, and the eggs hatch in spring. During the first half of their caterpillar-hood, the shiny, black larvae are gregarious and are picky eaters. Caterpillars pupate in early summer and the adults emerge in fall.