{"id":270,"date":"2025-07-17T12:49:03","date_gmt":"2025-07-17T16:49:03","guid":{"rendered":"https:\/\/site.extension.uga.edu\/dekalb\/?p=270"},"modified":"2026-03-10T09:57:26","modified_gmt":"2026-03-10T13:57:26","slug":"are-we-really-the-last-generation-to-see-fireflies","status":"publish","type":"post","link":"https:\/\/site.extension.uga.edu\/dekalb\/2025\/07\/are-we-really-the-last-generation-to-see-fireflies\/","title":{"rendered":"Are We Really the Last Generation to See Fireflies?"},"content":{"rendered":"\n

Recent viral claims have suggested that we may be the last generation to witness fireflies. Fireflies are beloved insects that evoke nostalgic memories for many people, causing the notion of their extinction to gain considerable public attention. Although there is valid concern regarding firefly populations, it begs the question:  Is it really true they might disappear?<\/em><\/strong><\/p>\n\n\n\n

Fireflies are beetles in the family Lampyridae<\/em>, with over 2,400 described species worldwide and an estimated 200 or more in North America. Most spend the majority of their life cycle as larvae, living underground or in leaf litter for two years or more, emerging only briefly as adults to reproduce. Although they are famous for their bioluminescence, not all species flash as adults, although those that do tend to receive more attention.<\/p>\n\n\n\n

In 2020, the International Union for Conservation of Nature (IUCN) Firefly Specialist Group published the first regional assessment of firefly populations in North America (Fallon et al., 2021<\/a>). This survey recorded 167 species across 20 genera, with estimates of over 225 species present in the United States and Canada. Of those assessed, 18 (14%) were classified as threatened<\/strong> (critically endangered, endangered, or vulnerable). However, 53% of fireflies evaluated in North America were data deficient, meaning there was not enough information to accurately determine their conservation status. <\/p>\n\n\n\n

\n
\n

The most common type of firefly in Georgia is Photinus pyralis<\/em>, or the common eastern firefly, which is listed as a species of least concern. Based on data from the IUCN Red List of Threatened Species in the Firefly Species Checklist<\/a>, only 2 of the 43 firefly species (5%) present of Georgia are endangered. 21 species (49%) are listed as least concern, whereas 46% are either data deficient or not evaluated at all. <\/p>\n\n\n\n

\"A
Figure 1. Pie chart showing the Red List category for firefly species present in Georgia using data from the IUCN.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n

Although firefly populations do face legitimate threats and certain species are undoubtedly in decline, there is no scientific evidence to support the claim that we are the last generation to see them<\/strong>. This narrative, although effective at capturing necessary public awareness, oversimplifies a complex and concerning issue: the severe lack of data on the majority of firefly species and the broader decline of global insect biodiversity.<\/p>\n\n\n\n

Fireflies are part of the much larger and alarming trend of insect biodiversity loss. According to the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES<\/a>), approximately 10% of all insect species are currently threatened with extinction, though other studies estimate much higher. Global insect biodiversity is plummeting, with species extinction rates estimated to be about 1-2% each year (Wagner et al., 2021<\/a>). Although that may sound small, with over 1 million described insect species and another 4.5 – 7 million still unnamed, these percentages represent a profound loss in both known and unknown biodiversity. <\/p>\n\n\n\n

Although it\u2019s unlikely fireflies will go extinct in the near future, the loss of species diversity within the group is concerning. As rarer or more specialized species disappear, more common and adaptable fireflies are likely to persist. However, even if they are able to fill some niches, biodiversity loss often weakens the system overall. When species are lost, certain ecological roles are diminished or eliminated, making ecosystems more vulnerable to disruption and environmental stressors. <\/p>\n\n\n\n

Fireflies face many of the same threats other declining insect species: habitat loss, light pollution, poor water quality, insecticide use, and climate change. Among these, climate and weather patterns are suspected to be the leading threat, since firefly larvae depend on soil moisture for survival. <\/p>\n\n\n\n

Currently, firefly data is largely on flying, nocturnal, flashing species, which are more visible and easier to study. Additionally, the absence of their light is notable and sparks greater public urgency for their conservation. As a result, 79% of glow worms and 68% of diurnal (day-active) species do not possess sufficient data, compared to 38% of flashing species (Wagner et al., 2021<\/a>). Although we aren’t at risk of fireflies disappearing tomorrow, they do face a very real and threatening crisis: We don’t yet know which species are in trouble or how best to protect them. <\/em><\/strong><\/p>\n\n\n\n

Regardless of their conservation status, it is never too early to protect the biodiversity of an insect population. Even species not currently listed as threatened may be vulnerable in was we do not yet understand. The same conservation tactics used to protect fireflies benefit a wide range of other insects as well. You can help by encouraging diverse, native plant growth, and intentionally leaving leaf litter and other areas of your yard undisturbed. Reducing outdoor lighting is also important, as light pollution can interfere with mating signals in many species. <\/p>\n\n\n\n

One of the most critical tools we have is public awareness. Even without direct intervention, public attention fuels the research and data collection needed to understand which species are in trouble and how we can best support them. <\/p>\n\n\n\n

<\/p>\n\n\n\n

Sources & Additional Information<\/h2>\n\n\n\n

Fallon\u00a0CE, Walker\u00a0AC, Lewis\u00a0S, Cicero\u00a0J, Faust\u00a0L, et al. (2021)\u00a0Evaluating firefly extinction risk: Initial red list assessments for North America. PLOS ONE 16(11): e0259379.\u00a0https:\/\/doi.org\/10.1371\/journal.pone.0259379<\/a><\/p>\n\n\n\n

Griffin, Becky and Schmidt, Jason. (2023). Georgia Fireflies. Field Report<\/em>. https:\/\/fieldreport.caes.uga.edu\/publications\/C1213\/georgia-fireflies<\/a>\/<\/a><\/p>\n\n\n\n

IPBES (2020). Special Report: Nature\u2019s dangerous decline is unprecedented, but it is not too late to act. https:\/\/www.ipbes.net\/news\/special-report<\/a><\/p>\n\n\n\n

Lewis, S. M., Jusoh, W. F. A., Walker, A. C., Fallon, C. E., Joyce, R., & Yiu, V. (2024). Illuminating Firefly Diversity: Trends, Threats and Conservation Strategies.\u00a0Insects<\/em>,\u00a015<\/em>(1), 71. https:\/\/doi.org\/10.3390\/insects15010071<\/a><\/p>\n\n\n\n

McNeil, D. J., Goslee, S. C., Kammerer, M., Lower, S. E., Tooker, J. F., & Grozinger, C. M. (2024). Illuminating patterns of firefly abundance using citizen science data and machine learning models.\u00a0The Science of the total environment<\/em>,\u00a0929<\/em>, 172329. https:\/\/doi.org\/10.1016\/j.scitotenv.2024.172329<\/a><\/p>\n\n\n\n

Wagner, D. L., Grames, E. M., Forister, M. L., Berenbaum, M. R., & Stopak, D. (2021). Insect decline in the Anthropocene: Death by a thousand cuts.\u00a0Proceedings of the National Academy of Sciences of the United States of America<\/em>,\u00a0118<\/em>(2), e2023989118. https:\/\/doi.org\/10.1073\/pnas.2023989118<\/a><\/p>\n\n\n\n

Firefly Species Checklist of the USA and Canada<\/a><\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Recent viral claims have suggested that we may be the last generation to witness fireflies. Fireflies are beloved insects that evoke nostalgic memories for many people, causing the notion of their extinction to gain considerable public attention. Although there is valid concern regarding firefly populations, it begs the question:  Is it really true they might disappear? Fireflies are beetles in the family Lampyridae, with over 2,400 described species worldwide and an estimated 200 or more in North America. Most spend […]<\/p>\n","protected":false},"author":572,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-270","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/site.extension.uga.edu\/dekalb\/wp-json\/wp\/v2\/posts\/270","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/site.extension.uga.edu\/dekalb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/site.extension.uga.edu\/dekalb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/dekalb\/wp-json\/wp\/v2\/users\/572"}],"replies":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/dekalb\/wp-json\/wp\/v2\/comments?post=270"}],"version-history":[{"count":9,"href":"https:\/\/site.extension.uga.edu\/dekalb\/wp-json\/wp\/v2\/posts\/270\/revisions"}],"predecessor-version":[{"id":659,"href":"https:\/\/site.extension.uga.edu\/dekalb\/wp-json\/wp\/v2\/posts\/270\/revisions\/659"}],"wp:attachment":[{"href":"https:\/\/site.extension.uga.edu\/dekalb\/wp-json\/wp\/v2\/media?parent=270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/dekalb\/wp-json\/wp\/v2\/categories?post=270"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/dekalb\/wp-json\/wp\/v2\/tags?post=270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}