Signs of Scissor Grinder Cicada Presence in Your Area

The scissor grinder cicada is a fascinating insect known for its distinctive and persistent call during the warmer months. If you’ve ever heard a loud, repetitive buzzing or grinding noise in your yard or local park, you might be hearing the scissor grinder cicada. This insect is not only an important part of the ecosystem but also a unique indicator of environmental conditions. Recognizing the signs of their presence can help gardeners, nature enthusiasts, and homeowners better understand the wildlife around them and potentially prepare for their seasonal arrival.

Overview of the Scissor Grinder Cicada

Before diving into the signs of their presence, it’s helpful to know what scissor grinder cicadas are. These cicadas belong to the genus Neotibicen and are commonly found throughout much of North America. They are large insects, typically measuring about 1.5 to 2 inches in length. Their wings are transparent with dark veins, and their bodies show various shades of green, brown, and black, often with intricate patterns that help them camouflage against tree bark.

The name “scissor grinder” comes from the insect’s distinctive mating call—a long, repetitive sound that resembles the noise made by a pair of scissors being sharpened on a grindstone. This call is produced by males to attract females and can be heard during late spring through summer.

Why Is It Important to Identify Their Presence?

Detecting scissor grinder cicadas early can be important for several reasons:

Ecological Balance: Cicadas are food sources for many birds, reptiles, and small mammals.
Gardening Impact: While adult cicadas don’t typically cause significant damage, their nymphs feed on root sap which can sometimes affect young trees.

Noise Awareness: The loud calls can be overwhelming if you’re unprepared.
Scientific Interest: Cicadas have life cycles tied closely to climate and environmental conditions, making them natural indicators.

Signs You Have Scissor Grinder Cicadas Nearby

1. Distinctive Mating Call

The most obvious sign of scissor grinder cicadas is their unmistakable call. Unlike other cicada species which might produce high-pitched or buzz-like sounds, the scissor grinder’s song is a sustained “zzzzzz-z-z-z” grinding noise that lasts several seconds and then repeats after a brief pause. You will often hear this call from tree tops during hot days when cicadas are most active.

If you notice this repetitive mechanical grinding sound emanating from trees or shrubs near your home or park area between late spring and summer afternoons, it’s a strong indicator that scissor grinder cicadas are present.

2. Sightings of Adult Cicadas

Adult scissor grinders are quite large and visible once you know what to look for. Here are some tips on how to spot them:

Location: They prefer deciduous trees such as oaks, maples, hickories, and elms.

Behavior: Adults often rest on tree trunks or branches during the day.
Appearance: Look for large greenish-brown insects with prominent clear wings veined with black lines.

If you see multiple robust cicadas clustered around a tree’s canopy or resting on trunks at dusk or dawn, this confirms their presence.

3. Exuviae (Cicada Shells) Attached to Trees

When nymphs mature into adults, they crawl out of the ground and shed their exoskeletons—these discarded shells are called exuviae. These empty shells cling to tree bark, fences, or even walls near where adult cicadas emerge.

Spotting numerous small, brittle brown shells stuck to vertical surfaces is a classic sign that scissor grinder cicadas have recently emerged in your area.

4. Small Holes in Tree Bark or Soil

Nymphs spend several years underground feeding on root sap before emerging as adults. When they finally surface, they dig tunnels straight up through soil near tree bases or directly through loose bark crevices.

You may notice tiny exit holes roughly 1/4 inch wide around the base of trees or within cracks in bark where they emerged. These holes sometimes have loose soil around them.

5. Sudden Increase in Bird Activity

Birds such as blue jays, crows, grackles, and mockingbirds love feeding on cicadas due to their abundance during cicada emergence seasons. If you observe an unusual number of birds gathering or flocking around specific trees during summer months accompanied by loud buzzing noises, it could mean cicadas are present nearby.

6. Timing Correlates with Warm Weather

Scissor grinders become active primarily during warm months when daytime temperatures exceed roughly 80°F (27°C). Their activity peaks July through September depending on region and climate.

If you start noticing any combination of calls or insect sightings during these months after a relatively warm spring buildup, it aligns well with typical scissor grinder emergence patterns.

What to Do If You Detect Scissor Grinder Cicadas

Appreciate Their Role

Cicadas play an essential role in ecosystems by aerating soil during subterranean stages and providing nutrition to many animal species during adult phases. They also contribute nutrients back to soil after dying off.

Try to appreciate their presence as a natural part of biodiversity rather than viewing them purely as pests.

Protect Young Trees

While adult cicadas don’t cause much damage by feeding on leaves or twigs, female cicadas use their ovipositors to insert eggs into small branches which may cause minor twig dieback known as “flagging.”

If you have young or recently planted trees vulnerable to this damage:

Consider using fine netting or lightweight protective coverings during peak egg-laying periods.

Maintain good tree health through watering and fertilizing so they recover faster.

Manage Noise Levels

If the loud calling disturbs your peace:

Using white noise machines indoors can help mask outdoor sounds.
Soundproof windows or heavy curtains may reduce noise penetration.
Keep windows closed during peak calling hours (often midday).

Understand Nymph Life Cycle Impact

Nymphs feed on root sap underground but rarely cause significant harm unless there’s a large population and newly planted shallow-rooted trees nearby.

To mitigate any potential impact:

Maintain strong soil health with organic matter additions.
Avoid excessive soil compaction around tree roots.

Signs NOT Associated With Scissor Grinder Cicadas

Not all buzzing noises in trees indicate scissor grinders; other insects like crickets, katydids, or other cicada species produce different sounds that vary in pitch and rhythm. Also:

Spider webs or aphid infestations on leaves do not signal cicada presence.
Large holes in tree trunks caused by wood-boring beetles differ from small exit holes created by nymph emergence.

Correctly identifying the source requires careful attention to sound quality and physical evidence such as exuviae presence.

Conclusion

Recognizing the signs of scissor grinder cicada presence helps deepen your understanding of local wildlife rhythms and prepares you for their noisy but natural invasion every summer season. The key signs include:

The unique mechanical grinding mating call
Sightings of large greenish-brown adult cicadas resting on trees
Discarded exoskeleton shells attached to trunks
Small exit holes in soil near trees
Increased bird predation activity
Correlation with warm weather patterns in summer months

By identifying these signals accurately and appreciating these insects’ ecological value while protecting vulnerable plants if necessary, you can coexist peacefully with one of nature’s most fascinating soundmakers: the scissor grinder cicada.