Are There Cicadas in Louisiana?

Cicada Habitats in Louisiana

Cicadas are found throughout Louisiana in forests, woodlands, swamps, and areas with established trees. The Mississippi River delta and surrounding bottomlands provide extensive suitable habitat. The Atchafalaya Swamp, one of the largest swamps in North America, contains excellent cicada habitat with cypress trees and other woody vegetation. Bayou regions throughout south Louisiana support cicada populations. Northern Louisiana forests, with their pine and hardwood mix, host active cicadas. Coastal prairie areas with scattered trees and shrubs contain cicadas. Urban centers including New Orleans, Baton Rouge, Lafayette, and Shreveport host cicadas in parks and residential neighborhoods. Rural areas with farmsteads and tree cover throughout the state attract cicadas. Cicadas depend on tree roots during their underground development stage, so any area with established trees provides potential habitat. Swamp forests with cypress and tupelo trees provide excellent conditions. Cicada density generally increases in forested and wooded regions where tree cover is extensive. For more on cicada in Louisiana, see ourLouisiana cicada guide.

Seasonal Activity in Louisiana

In Louisiana, annual cicadas typically emerge in mid-July, but the warm climate allows extended activity into late fall compared to northern states. Some cicada activity may continue into October and even November in exceptional years. Peak choruses typically occur in late July through August. The warmth of Louisiana's summers creates ideal conditions for extended cicada activity. Periodical cicadas follow their own emergence schedule on 13-year or 17-year cycles. When a periodical brood emerges in Louisiana, which occurs roughly every other year in some part of the state, the populations can be extremely dense. The synchronized emergence of millions of cicadas creates dramatic and widespread choruses. The length of the Louisiana cicada season is notably longer than in northern states due to the extended warm weather. Nymphs remain underground for years, gradually developing through multiple molts before emerging as adults. The warm climate of Louisiana provides ideal conditions for cicada survival and reproduction. You can also browseLouisiana wildlife.

How to Identify Cicadas

Louisiana cicadas typically measure between one and a half and two inches in length. Annual cicadas display dark brown or black bodies with transparent wings folded tent-like over their backs. Periodical cicadas, which include the significant 13-year and 17-year broods found in Louisiana, have distinctive features including red eyes, black bodies, and red or orange markings on wings. The wing structure provides a key identification feature. Cicada wings display prominent veins in a complex vein pattern that creates visible lines across the transparent surfaces. The body is strong and chunky compared to many other insects of similar size. Male cicadas are generally more visible and active than females because males produce the loud buzzing and humming sounds. The sound-producing structures, called timbals, are located on the sides of the abdomen and create the distinctive chorus. Female cicadas typically remain quieter and less conspicuous than males, making them harder to locate.

Where Cicadas Concentrate in Louisiana

The highest densities of cicadas in Louisiana occur in forested areas, particularly in the Mississippi River delta, Atchafalaya Swamp, and associated bottomlands. The extensive cypress and tupelo swamps contain excellent cicada habitat. Northern Louisiana forests with pine and hardwood composition host active populations. Riparian forests along major rivers and bayous provide ideal conditions. State parks and wildlife management areas with mature tree canopy consistently attract cicadas. Urban parks in New Orleans, Baton Rouge, Lafayette, and Shreveport host cicadas. Residential neighborhoods with mature trees throughout the state support cicada populations. Rural farmsteads surrounded by trees attract cicadas. The warm climate of Louisiana supports cicadas throughout much of the year compared to cooler northern regions. Areas with dense tree cover report the most intense cicada choruses. ConsultingLouisiana wildlife resourcesprovides specific local information about nearby cicada populations.

Cicada Behavior and Feeding

Cicadas are herbivores that feed exclusively on plant sap using needle-like mouthparts. Both adult cicadas and their underground nymphs obtain nutrition this way. For most of their lives, cicadas develop underground as nymphs, gradually growing through multiple molts over 2 to 17 years depending on the species. During this underground phase, nymphs feed on fluids extracted from tree roots. When conditions are favorable, nymphs tunnel to the surface and undergo their final molt, emerging as winged adults. Adult cicadas live for only three to four weeks after emergence. During this brief period, they feed, seek mates, and reproduce. Males create sound by rapidly vibrating specialized timbals on their abdomens. Females respond to the male calls and move toward the sound. After mating, females cut small slits in tree bark and deposit eggs. These eggs hatch into nymphs that burrow underground to begin their long development cycle.

Safety and Coexistence

Cicadas are completely harmless to humans. They do not bite, sting, or attack. They are not venomous or poisonous. The loud buzzing and humming sounds, while sometimes intense, are purely natural mating behavior. Cicadas occasionally lay eggs in young tree branches, causing minor twig damage, but this rarely affects tree health significantly. Established trees easily recover from this minor damage. Young or newly planted trees can be protected with netting during peak emergence if you wish to prevent branch damage. Cicadas provide ecological benefits by serving as food for birds, spiders, wasps, and other wildlife. Their presence indicates a healthy environment with mature trees. The warm climate of Louisiana allows extended cicada activity, making them a frequent part of the summer and fall soundscape. Many people find the cicada chorus to be a pleasant natural symphony. There are no health risks or safety precautions needed beyond appreciating these insects from a distance. Cicadas are a valued part ofLouisianawildlife.

Species Confused With Cicadas

Several insects in Louisiana are commonly mistaken for cicadas. Grasshoppers are similar in size but have different body structures with powerful hind legs designed for jumping. Crickets produce sounds but have distinct body shapes and markings. Cicada killers are large wasps that hunt cicadas for food and are sometimes confused with cicadas themselves, though they are predatory insects. Katydids produce high-pitched calls and resemble grasshoppers more closely than cicadas. The whirring sound of helicopter seeds from trees can be confused with cicada sounds by those unfamiliar with both. The strong body shape, prominent transparent wings with complex vein patterns, and distinctive loud buzzing help distinguish true cicadas. Field guides and sound recordings specific toLouisiana insectsprovide excellent identification resources. Learning these distinctions enhances appreciation for Louisiana's insect diversity and ecology.

Frequently Asked Questions

What creates the loud buzzing sound that cicadas make? Male cicadas produce sound using specialized structures called timbals located on their abdomens. Rapid vibrations of these timbals create the characteristic buzzing and humming chorus sounds that can reach up to 90 decibels or louder.

How long do adult cicadas live? Adult cicadas live for approximately three to four weeks after emerging from underground. During this brief time, they feed, call, mate, and reproduce. Most of the life cycle occurs underground during the nymph stage.

Do cicadas cause serious damage to trees? Cicadas do not eat leaves or cause significant tree damage. They feed only on sap. Minor damage occurs when females lay eggs in twigs, but trees easily recover. Young trees can be protected with netting if concerned.

When are cicadas most active in Louisiana? Annual cicadas typically create choruses from mid-July through late fall, with peak activity in late July and August. The warm Louisiana climate allows extended activity compared to northern states. Periodical broods follow 13-year or 17-year cycles.