Field reports

Canadian Imperial Moth (Eacles pini) turned up near Jeffersonville in late July—a research-grade record of a species that iNaturalist flags as threatened. This is a large, slow-living silkmoth whose caterpillars depend on healthy pines and spruces; their presence in the foothills is a quiet indicator of suitable conifer forest. The foothills also logged four Spruce Budworm Moth observations from early to mid-July—two at 126 Rice Farm Dr, Jeffersonville and two at separate Vermont locations—a data point worth noting as the species remains a concern across conifer forests in the region. The two moths occupy opposite ecological roles: budworm caterpillars are voracious defoliators that strip needle cover in weeks, while Imperial Moth adults don't feed at all and their caterpillars cycle slowly through conifer stands across years. But their appearance across the same corner of the foothills in the same July window matters. Conifer stands under sustained budworm pressure lose needle density fast, and that stress weakens the very pines and spruces that Imperial Moth caterpillars need to survive and mature.

A Jaguar Guapote was confirmed in these waters on July 28 — a large, aggressively predatory cichlid native to Nicaragua and Honduras that has no natural place in a Florida flatwoods system. Adults can exceed two feet and take a wide range of prey including smaller fish and frogs; they're also tolerant enough of warm, low-oxygen water to persist through Florida summers without much difficulty. How it got here is unclear, though released aquarium fish are a common pathway, as Jaguar Guapotes are popular in the hobby trade and grow faster than most people expect. The concern isn't this single record but the potential for a breeding population to take hold, as has happened with other cichlids across South Florida, where species like the Mayan Cichlid and Spotted Tilapia have permanently altered the fish communities they moved into.

Giant reed (Arundo donax) has been observed at two separate locations along the Swan River this year — a fresh sighting on the Mounts Bay Road foreshore three days ago, and two earlier records from Maylands in April. At five metres tall and spreading aggressively by rhizome fragments carried downstream in winter flows, this is one of the world's most destructive riparian invaders. The timing of winter sighting is important: fragments travel farthest in high flows, and the weed stays conspicuously green while native understorey dies back, making this the best season to locate it. The same riverbank habitat holds Flooded Gum, a native tree that iNaturalist flags as threatened, recorded three times this month alone. Giant reed is known to alter soil chemistry and hydrology in ways that make riparian recovery difficult even after removal — a concern worth keeping in mind given the co-occurrence of both species within the same stretch of riverbank, and one that underscores why early detection matters here.

Bog Coppers (Tharsalea epixanthe) turned up near Concord on July 25 — two research-grade sightings on the same day. Bog Coppers are peatland specialists: their larvae feed on wild cranberry in sphagnum bogs, so finding them anywhere raises the question of what bog habitat might be nearby. Two presence records don't confirm habitat condition or ecosystem health — iNaturalist observations show that a species was here at a point in time, nothing more. But the sightings are worth noting, and anyone who knows of sphagnum bog habitat in the Concord area would have good reason to look closer.

Forked Globetail hover flies (Sphaerophoria sulphuripes) are not common sightings these days, but one turned up nectaring on low-growing composites on July 28 — late July is when adults are most active and visible. These hover flies are genuine pollinators of open-ground wildflowers, and their presence signals something ecologically valuable: unimproved meadow edges and grasslands that have been steadily lost across the lowlands to development and invasive plant encroachment. iNaturalist flags this species as threatened. Two other invertebrates that iNaturalist flags as threatened appeared within the same month: a Purple-backed Cabbageworm Moth (Evergestis pallidata) and a California Pyrausta Moth (Pyrausta californicalis). Three records in a midsummer window is not enough to claim anything definitive about population status, but it is an unusual cluster of iNaturalist-flagged sensitive invertebrates in a single month, and worth attention as the meadow edges they depend on continue to narrow.

Eastern Cicada-killer Wasps (Sphecius speciosus) are at peak activity across the waterfront and inland parks this month — 19 sightings since late June, with seven logged just in the past four days from Greenwood Heights and Prospect Park to the waterfront edge and Herbert Von King Park, including sightings along Joralemon Street and in Herbert Von King Park on July 28. These are North America's largest native solitary wasps, two inches long and formidable-looking, yet they rarely sting. Their midsummer timing is no accident: they emerge and hunt precisely when cicadas do, each female provisioning a single egg with a paralyzed cicada dragged back to her burrow. That sightings are turning up across this many city blocks — from Greenwood Heights to Prospect Park to the waterfront edge — points to the persistence of suitable ground. Sparse vegetation, sandy margins, and bare soil patches still exist here in sufficient patchiness for a native insect with strict nesting requirements to establish and forage.

Great Black Digger Wasps (Sphex pensylvanicus) have appeared twice in the past ten days—right on schedule for their abrupt, brief late-July window. These large solitary wasps time their emergence to match their prey: adult katydids and crickets, which they paralyze and bury in underground burrows stocked as food for their larvae. The timing is no accident; it's a predator-prey synchrony honed over millennia. This month's survey turned up 48 species across the plateau, including Common Eastern Bumble Bees, several sweat bee species, Spicebush Swallowtails, Great Spangled Fritillaries, and Silver-spotted Skippers—a reasonably diverse summer insect community. Digger wasps need bare or sparsely vegetated soil for their burrows alongside a healthy orthopteran prey base, a combination that disappears quickly with intensive mowing and habitat loss. That their presence persists here in late July is worth noting. The wasp sightings mark what the landscape is still capable of supporting—and how narrow that margin has become.

Western Bumble Bees (Bombus occidentalis) have begun reappearing across the Colorado Front Range after vanishing for nearly three decades. A sighting in Boulder this week is part of a broader pulse of activity—39 observations now scattered from Denver's urban parks up through the high meadows of Rocky Mountain National Park, with a cluster of confirmed records in just the last seven days. The species' collapse in the late 1990s was swift and severe. A pathogen outbreak linked to commercial bumble bee rearing swept through wild colonies across the foothills and alpine zone, and within a few years, what had been common from lower elevations to above timberline simply vanished. For a bee that had become genuinely hard to find here over the past decade, the current spread across such a wide elevation gradient is striking. Whether this represents a true population recovery or simply reflects more attentive community monitoring remains unclear—iNaturalist records capture presence, not population trend. Still, for a species that seemed lost to the region, this resurgence deserves careful watching.

Indian Swampweed (Hygrophila polysperma), an invasive aquatic from Southeast Asia that entered Florida through the aquarium trade, has now been recorded twice at the same waterside location—in April and again last week. That repetition at identical coordinates signals establishment, not a one-off fragment wash-in. The species is federally listed as a Noxious Weed because it forms dense underwater mats that shade out native aquatic plants, strip oxygen from the water column near the bottom, and collapse the structural habitat that fish, wading birds, and invertebrates depend on. Conditions here are turning ideal for it. The ST LUCIE ESTUARY AT A1A (STEELE PT) STUART FL monitoring station is reading 31°C—warmth that this tropical plant thrives in. Kiplinger Park sees constant boat and foot traffic, which are the vectors that matter most: fragments snagged on hulls, caught in boots, tangled in gear. What arrives here can spread fast.

Polyphemus Moths (Antheraea polyphemus) have been turning up steadily since late May — 35 observations across 60 days, from residential streets in Grand Rapids to rural townships near Lansing, with the most recent confirmed sighting at Whistle Stop Park in Byron Center on July 26. These are among the largest silk moths in North America, with wingspans reaching six inches. The large eyespots on their hindwings — giving the species its name from the one-eyed Cyclops of Greek myth — serve as a defense against predators during the adults' brief final days. Adults live only a week, never eat, and exist solely to find a mate. The larvae feed on oaks, maples, birches, and cherries, making the species a tracker of woodlot edges and riparian corridors across a range of settings. That these moths are turning up from urban parks to farm-country woodlots suggests broadleaf tree cover is widely distributed here, though presence records alone don't tell us how well connected those patches are.

Autumn Meadowhawk (Sympetrum vicinum) appeared on the wing in mid-July — more than three weeks earlier than this species typically emerges. The Autumn Meadowhawk earns its name honestly: it is usually the last dragonfly standing in New England, appearing in August and flying well into October, sometimes even November, long after every other odonate has finished. Twelve-spotted Skimmers and Widow Skimmers are turning up on schedule for peak summer emergence, so the timing gap between those species and this early Autumn Meadowhawk is striking. A single record is one data point, not a trend — but it's worth watching. If more records accumulate through the rest of the month, the pattern may point to shifts in phenology worth understanding.

American beech trees here are now showing the telltale dark banding between leaf veins that marks Beech Leaf Disease — associated with a tiny nematode that was first documented in Ohio in 2012 and has since spread rapidly through the Northeast. The appearance of this condition in the understory is unwelcome news for trees already contending with beech bark disease, a decades-long epidemic combining an introduced scale insect and fungus that has been steadily killing mature beeches across the region. The ecological stakes are high. American beech is one of the forest's dominant mast producers, and its nuts are a critical fall and winter food source for black bear, wild turkey, and white-footed mice. With beech now under attack from two directions, these keystone food sources bear watching closely in the season ahead.

Wood Turtles (Glyptemys insculpta) are on the move right now — this is the part of summer when they range farthest from the streams they overwinter in, pushing into upland fields and forest edges to forage on berries, fungi, and whatever else is coming in. A confirmed sighting here in Dutchess County earlier this month fits that pattern exactly. These turtles need both clean, gravel-bottomed streams for breeding and overwintering and intact upland habitat for summer ranging, which makes them sensitive to any kind of fragmentation between those two zones — a road crossing at the wrong place, a mowed bank that cuts off the corridor. iNaturalist flags this species as threatened, and sightings here remain sparse enough that a single confirmed record in summer marks an important baseline. Indigenous communities in this region historically regarded turtles as figures of endurance and environmental memory — an association that, for Wood Turtles, has a biological basis: a single turtle can carry decades of landscape history in its movements.

Yellow Star-Thistle (Centaurea solstitialis) has turned up in 52 observations over the past two months, with records stretching from the bay-edge trails at Byxbee Park and the San Francisco Bay Trail through Palo Alto, Redwood City, Los Altos Hills, and into the La Honda foothills. Late July is the critical moment in its lifecycle: the spiny flower heads are ripening and locking in next year's infestation before the first rains arrive. This Mediterranean annual is one of California's most aggressive rangeland invaders, capable of forming near-monocultures on dry slopes that once supported diverse native forbs and grasses. The thistle's persistence reflects several advantages. It is highly toxic to horses and largely avoided by cattle and other grazers, giving it a competitive edge once established. It exploits the same dry summer conditions that stress native plants — a wet spring followed by sharp summer drought tends to favor it — and its deep taproot draws water from soil depths that shallow-rooted native annuals cannot reach.

Dotted Paropsine Leaf Beetle (Paropsis atomaria), a small spotted leaf beetle from Australia, has been quietly spreading across the west side of the basin since late February. In just the past week alone, there have been five new sightings ranging from Kenneth Hahn State Recreation Area through Culver City and up toward UCLA — 67 records in total since the beetle first appeared. In its native range, this beetle feeds on eucalyptus foliage and can defoliate trees when populations build. The concern here is geography and history. Eucalyptus was planted by the millions across Los Angeles over the past century and a half, lining streets, filling parks, and covering hillsides from the coast to the foothills — creating a continuous, connected food source across an enormous urban canopy. A beetle that specializes on eucalyptus has essentially inherited an ideal landscape. Whether this establishes into something that those trees here will struggle with, or stays below the threshold of serious damage, remains an open question — one worth watching as summer peak activity continues.

Thornback Skate (Raja clavata), Owl Skate (Rostroraja alba), and Blonde Skate (Raja brachyura) have all been recorded off this coast within the past year — in late January, late April, and just three days ago. All three are threatened species, and their appearance in these inshore waters is noteworthy. Skates were once abundant throughout the northeast Atlantic before bottom trawling depleted them; seeing them return to familiar ground is a quiet signal worth marking. Skates are slow-breeding, long-lived fish that reach reproductive maturity late — a Blonde Skate may not breed until it is over a decade old, meaning recovery from overfishing is measured in generations, not seasons. Whether three observations in a year reflect genuine population recovery or simply reflect more people with cameras in the water is hard to say. But Thornback, Owl, and Blonde Skate all appearing off Arrábida in a single calendar year is not a record to overlook.

Two permitted dischargers on the East Fork Whitewater River are both in significant non-compliance with their Clean Water Act permits — and the wildlife drinking from that water downstream has no way of knowing it. RICHMOND WWTP, CITY OF and BELDEN WIRE & CABLE COMPANY have no penalties assessed yet. Meanwhile, iNaturalist observations from the downstream watershed over the past year show a steady parade of native mammals that routinely drink from or forage along riverbanks. White-tailed Deer, Common Raccoon, Virginia Opossum, Groundhog, Eastern Cottontail, and Striped Skunk have all been recorded within the corridor in recent months — the most recent as recently as July 19. Also observed in February: an Eastern Red Bat, a threatened species that drinks on the wing, skimming the water's surface during low passes over the river. Late July into August is peak thermal stress season for warm-water streams. Flow drops, temperatures climb, and whatever enters the river from those two discharge points becomes more concentrated. The mammals observed here don't stop drinking because a permit is out of compliance. That's the gap this data can't close on its own.

Monarch butterflies have made three appearances along the corridor since early July, with the most recent sighting on Westcott Street on July 23rd. On the same week, iNaturalist flagged a Black-and-gold Bumble Bee on the Eastside — both threatened species that depend on milkweed, though in different ways. Monarchs lay their eggs exclusively on milkweed, and their caterpillars eat nothing else. Bumble bees work the flowers for nectar and are among milkweed's most effective pollinators. The two sightings falling in the same week is a reminder that July is when both species are typically active and ranging widely. Three sightings on their own is just three sightings — neither observation signals alarm or remarkable success — but the fact that the corridor is supporting both species at the same moment speaks to the quality of the weedy edge habitat that threads through it.

Golden Northern Bumble Bees (Bombus fervidus) have appeared 19 times along the Brooklyn waterfront over the past six months — Navy Yard, DUMBO, the East River Esplanade — with sightings still arriving this week. iNaturalist flags this species as threatened, and it has declined sharply across the northeastern United States, making a sustained urban cluster worth noting. The likely driver is a patchwork of community gardens and park plantings now in peak bloom. Late-season nectar from swamp milkweed and coastal plain Joe-Pye weed gives colonies the fuel to raise new queens before autumn. Bumble bees are among the few insects capable of buzz pollination — vibrating their flight muscles to shake loose pollen other bees can't reach — making them disproportionately important for native plant reproduction. Small habitat patches in cities are doing more ecological work than their footprint suggests.

Spotted Lanternflies have appeared in the valley this month, with at least one research-grade sighting confirmed at the Columbia River Greenway in July. This is the quiet beginning of what tends to become a harder-to-control outbreak: first a few scattered records, then they are everywhere. The insect feeds by piercing bark and drawing sap from dozens of host plants — grapes, hops, apples, black walnut — but it shows a strong preference for Tree-of-Heaven, the invasive Asian tree that has spread along the valley's roadsides and riverbanks and now serves as the species' primary staging habitat. The timing is notable. Hampden County has been under moderate drought (D1) for at least three consecutive weeks, stressing the same trees the lanternflies are already targeting — and trees under prolonged water stress tend to have fewer resources to cope with additional pressure. Anyone finding egg masses — flat, mud-colored smears on bark, stones, or outdoor furniture — should scrape them off and report them. At this scale, early removal is still the most effective intervention.

Cicada-killer wasps (Sphecius species) are out along Broadway — two sightings at the same spot on July 25 almost certainly mark a nesting aggregation on a sunny patch of disturbed ground nearby. These are among the largest wasps in the northeast, females reaching nearly two inches, and their late-July appearance is one of the valley's most reliable seasonal markers. They emerge precisely when annual cicadas hit peak numbers, provision underground burrow cells with a single paralyzed cicada per egg, and are gone by August. Despite their size they are solitary, with no colony to defend, and the males — which hover and bluff around burrow sites — cannot even sting. Their fondness for dry, compacted, sun-exposed soils means roadsides and sandy banks have become prime nesting habitat, which is partly why encounters like this one are easy to come by in late summer.

Dogbane Leaf Beetle (Chrysochus auratus) are at peak activity along the Eastside corridor this week — their metallic green-and-copper shells catching the July light in a way that stops people mid-step. Two observations turned up on the 25th, both clustered where dogbane clings to the rough margins near Onondaga Creek, with a third sighting recorded earlier in the month at Gateway Center. The beetles feed almost exclusively on dogbane, a native plant toxic enough to deter most insects. That specialization means they track wherever the plant holds on, which tells us something about both the dogbane and the ground it roots in. Right now the creek is running at 21 cubic feet per second at the ONONDAGA CREEK AT SPENCER STREET, SYRACUSE NY gauge — the kind of slow summer flow that concentrates whatever enters it. The beetles' presence at the dogbane margins is not a health clearance for the water, but it does say the plant is present and holding on, which suggests the ground beneath it retains some ecological resilience even as the water flows thin and stressed.

Monarchs (Danaus plexippus) have been turning up across the basin nearly every day this month — from the beach towns along the coast through Culver City, Pasadena, and up into the San Gabriel foothills, with two sightings at Ballona Wetlands on a single day last week. July is the summer breeding generation, not the fall migration; these are butterflies searching out milkweed to complete one more reproductive cycle before the autumn push south toward Mexican overwintering sites. The western population crashed by roughly 99% by 2020, according to Xerces Society Thanksgiving Count data — a collapse driven by loss of milkweed across the landscape and pesticide use. Urban and suburban milkweed plantings across exactly this kind of fragmented, built-up terrain are considered a key factor in the species' prospects — a reminder that backyard conservation can matter at a continental scale. Yet not all milkweed is equal here. The tropical milkweed that lines many garden beds stays green year-round in the mild climate, which can cause monarchs to skip migration entirely and linger on plants that accumulate a protozoan parasite called Ophryocystis elektroscirrha. The sightings at Ballona are a reminder that even a heavily impaired urban estuary still draws this species — though what observation counts reflect about population status, observer effort, or habitat use is beyond what presence records alone can tell us.

Eight dragonfly and damselfly species turned up in two days this week around the freshwater ponds behind the Corolla dunes—a compressed burst of odonate diversity that marks the midsummer peak when shallow barrier island wetlands run most productive. The run included Bar-winged Skimmer (Libellula axilena), a threatened species found at Lost Lake Lane on July 23rd, alongside Blue Dasher, Needham's Skimmer, Great Blue Skimmer, Four-spotted Pennant, Eastern Amberwing, Common Green Darner, and Big Bluet. Bar-winged Skimmers are coastal plain specialists that breed in still, well-vegetated ponds and are among the first odonates to vanish when those wetlands shrink or go brackish—their presence is a key indicator of adequate freshwater depth and stable vegetation cover. The Currituck Sound gauge at Corolla is reading 1.08 feet, well within the normal range, meaning the freshwater lens behind the dunes remains intact and hasn't been pushed back by high water on the sound side. That constellation of eight species, each with different microhabitat preferences, suggests the ponds are holding their productive character through the summer heat.