Updated: July 8, 2025

The red-eyed cicada is a fascinating insect known for its distinctive bright red eyes and loud, buzzing calls. These cicadas are part of the broader cicada family, which includes many species that emerge in cycles, often causing notable ecological and cultural impacts. Identifying their presence early can be both intriguing and useful, especially for gardeners, naturalists, and anyone interested in local wildlife.

In this article, we will explore the various signs that indicate the presence of red-eyed cicadas in your area. By understanding these signs, you can better appreciate their life cycle, behavior, and the environmental factors that support their populations.

What Are Red-Eyed Cicadas?

Red-eyed cicadas belong to a group of cicadas characterized by their striking red eyes, which contrast sharply with their mostly green or brown bodies. They are typically found in warm climates and have a unique life cycle that includes spending multiple years underground as nymphs before emerging en masse. This synchronized emergence often results in noisy choruses during the late spring or early summer months.

These insects play an important ecological role by aerating the soil during their nymph stages and serving as food for various predators once they emerge. However, their loud calls and sudden appearances can also catch people off guard if they are unfamiliar with these creatures.

Physical Signs: What to Look For

1. Sightings of Adult Cicadas

The most obvious indication of red-eyed cicadas is actually seeing them. Adult cicadas are relatively large insects, ranging from 1 to 2 inches in length. Look for:

  • Bright red eyes: This is the defining feature distinguishing them from other cicada species.
  • Greenish or brownish bodies: Their bodies are camouflaged to blend into tree bark and leaves.
  • Transparent wings: These extend beyond their body length and have visible vein patterns.
  • Clusters on trees: Adults often congregate on tree trunks and branches.

If you notice insects matching this description on trees or flying around during warm days, it’s a strong sign red-eyed cicadas have emerged.

2. Exuviae (Cicada Shells)

After nymphs emerge from the ground, they shed their exoskeletons — called exuviae — as they transition into adults. These shells stick to tree bark, fence posts, or other vertical surfaces where the cicada has climbed during molting.

Finding these empty shells is a vital sign because it confirms that cicadas have recently emerged nearby. These shells are light brown and look like miniature versions of adult cicadas but are hollow and fragile.

Auditory Signs: Recognizing Their Song

One of the most distinctive signs of red-eyed cicadas is their loud mating call. Male cicadas produce this sound to attract females using specialized structures called tymbals located on their abdomens.

3. Loud Buzzing or Clicking Sounds

Red-eyed cicadas create a continuous buzzing or clicking noise that can reach 100 decibels or more — roughly equivalent to a lawn mower. The call typically consists of:

  • Rapid rhythmic beats
  • Pulsing clicks interspersed with buzzing
  • A chorus effect when many males sing simultaneously

If you hear a persistent loud buzz near wooded areas or trees during late spring or summer afternoons, you are likely hearing red-eyed cicadas at work.

4. Timing and Duration of Calls

The calls usually peak during the hottest parts of the day when temperatures exceed 80°F (27°C). Cicadas become less active at night but may occasionally produce sporadic sounds after sunset.

The singing period lasts several weeks during the emergence season. Hearing these sounds repeatedly over days suggests a substantial population is present nearby.

Environmental Signs: Where to Check

Because red-eyed cicadas depend heavily on specific habitats for survival, certain environmental clues can hint at their presence.

5. Trees With Freshly Dug Soil Pits

Before emerging as adults, cicada nymphs live underground feeding on root sap for several years (typically 2 to 5 years depending on the species). When they are ready to emerge:

  • Nymphs tunnel up through soil near tree bases.
  • They leave small holes or loose soil patches around tree trunks.
  • You might see tiny soil mounds or disturbed patches close to trees.

If you notice these freshly dug holes around trees like oaks, maples, or other hardwoods common in your region, it could mean nymph emergence is underway.

6. Abundance of Host Trees

Red-eyed cicadas prefer certain types of trees for feeding and laying eggs:

  • Deciduous hardwoods like oak, hickory, maple, and elm.
  • Trees with mature bark that provide suitable oviposition sites.

Areas with dense populations of these trees are more likely to host emerging cicadas. If your neighborhood has many such trees surrounded by undisturbed soil, it increases the probability cicadas will appear there in cyclical fashion.

7. Signs of Egg-Laying Damage

Female red-eyed cicadas cut slits into small branches and twigs with their ovipositors to deposit eggs inside. This behavior can cause:

  • Tiny scars along thin branches
  • Twig dieback or breakage
  • Small holes visible on young shoots

If you observe clusters of dead twigs or notches along branches during late summer following emergence season, this may signal recent egg-laying activity by females from local red-eyed cicada populations.

Behavioral Signs: Movement Patterns

Understanding some behavioral tendencies helps identify when red-eyed cicadas are active.

8. Sudden Emergence Events

Red-eyed cicada emergences often happen en masse over short periods lasting one to three weeks. During this time:

  • Large numbers of nymphs crawl out from soil at dusk or nighttime.
  • Adults quickly molt and begin flying within hours.
  • Tree trunks become dotted with empty shells and active adults.

If you see sudden swarms of flying insects resembling large flies with bright eyes appearing overnight near vegetation, it is a classic sign of an emergence event.

9. Attraction to Light Sources at Night

Although mainly diurnal (active in daylight), newly emerged adult cicadas may be attracted to artificial lights at night during their initial hours above ground.

If outdoor lights near wooded areas suddenly attract swarms of large insects matching red-eyed cicada descriptions after dusk, this could indicate recent emergence nearby.

Indirect Ecological Indicators

Beyond direct sightings or sounds, some indirect ecological indicators suggest healthy local populations.

10. Increased Predator Activity

Red-eyed cicadas serve as prey for birds (especially crows and jays), mammals (raccoons), reptiles (lizards), and even certain predatory insects.

During emergence seasons:

  • You might observe heightened bird activity around infested trees.
  • Predators may hunt openly feeding on adult cicadas.

Noticing such increased predation behavior often correlates with large local populations present.

11. Changes In Plant Health Due To Egg-Laying

Heavy infestations sometimes lead to noticeable plant stress:

  • Twigs die back from oviposition damage.
  • Leaves may turn yellow prematurely due to sap loss.

While not always severe enough for human detection at small scales, significant twig damage visible over summer months indicates recent breeding activity by these insects nearby.

Conclusion

Recognizing the presence of red-eyed cicadas involves combining multiple observations: spotting adults or exuviae on trees; hearing their unmistakable loud buzzing calls; observing changes around host trees such as fresh soil pits and twig damage; noting sudden emergence events; and even detecting increased predator activity feeding on them.

By paying close attention to these signs throughout spring and summer in suitable habitats—especially areas rich in deciduous hardwood trees—you can confidently determine if red-eyed cicadas inhabit your region. Understanding these indicators enhances your appreciation for this remarkable insect’s natural history while preparing you to experience one of nature’s fascinating periodic spectacles up close.

Whether you’re a naturalist intrigued by insect life cycles or simply curious about unusual animal phenomena near your home, spotting red-eyed cicada signs offers an exciting window into an extraordinary world happening just beneath our feet—and then suddenly all around us in a vibrant chorus!

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