Bioluminescent
Guides
Cenophengus debilis
glowworm beetle
Cenophengus debilis is a species of glowworm beetle in the family Phengodidae, first described by John Lawrence LeConte in 1881. Like other phengodid beetles, it is bioluminescent. The species is known from North America, though specific details about its biology and ecology remain poorly documented in the scientific literature.
Ctenophora
comb jellies, sea gooseberries, sea walnuts, Venus's girdles
Ctenophora is a phylum of marine invertebrates distinguished by eight rows of fused cilia used for locomotion, called comb rows. They are the largest animals to swim using cilia. Unlike cnidarians, they lack stinging cells and instead capture prey using colloblasts—sticky adhesive cells. The phylum contains approximately 150–186 recognized species exhibiting diverse body plans, from egg-shaped cydippids with retractable tentacles to flattened benthic platyctenids and large-mouthed beroids. Ctenophores possess a decentralized nerve net without a brain, and their phylogenetic position as either the earliest or second-earliest branching animal lineage remains actively debated.
Deilelater
Glowing Click Beetles
Deilelater is a genus of bioluminescent click beetles established in 1975 by Cleide Costa. Most of its seven species were transferred from the genus Pyrophorus. Adults possess lateral luminous spots on the prothorax and a small lamellate abdominal luminous organ. The genus occurs from the southeastern United States through Mexico, Central America, and western South America.
Distremocephalus
glowworm beetles
Distremocephalus is a genus of glowworm beetles in the family Phengodidae, established by Wittmer in 1976. The genus comprises approximately 11 described species distributed across North America, primarily in the southwestern United States and Mexico. Members are bioluminescent beetles commonly known as glowworms, with most species described by Zaragoza in 1986.
Distremocephalus mexicanus
Distremocephalus mexicanus is a beetle species in the family Phengodidae, a group commonly known as glow-worm beetles or railroad worms. The species was described by Wittmer in 1963 and is native to Mexico. Phengodidae are bioluminescent beetles, with larvae and adult females typically producing light from specialized organs. Males are usually winged and non-luminous, while females are larviform and luminous. The genus Distremocephalus belongs to the tribe Mastinocerini within the subfamily Phengodinae.
Mastinocerini
Mastinocerini is a tribe of glow-worm beetles within the family Phengodidae, comprising at least 190 described species across 24 genera. Members of this tribe are distributed primarily in the New World, with significant diversity in Central and South America. The tribe was established by LeConte in 1881 and includes the type genus Mastinocerus. These beetles are notable for their bioluminescent larvae, which use light production to lure prey.
Micronaspis
Florida intertidal firefly
Micronaspis is a monotypic genus of fireflies (Lampyridae) containing a single species, Micronaspis floridana, commonly known as the Florida intertidal firefly. This rare, endemic species is restricted to intertidal salt marsh habitats along the coast of Florida and the Bahamas. It represents a classic example of geographic isolation due to its highly specialized habitat requirements.
Micronaspis floridana
Florida Intertidal Firefly, fiddler crab firefly
Micronaspis floridana is a rare, endemic firefly restricted to intertidal salt marshes along the peninsular coast of Florida and the Bahamas. The genus is monotypic, containing only this single species. It serves as a model organism for studying genetic isolation and speciation due to its highly restricted 'shoestring' geographic distribution. The species is threatened by coastal development, storm surges, and sea level rise; Hurricane Dorian severely impacted populations on Grand Bahama island.
Microphotus angustus
California Pink Glowworm
Microphotus angustus is a firefly species in the beetle family Lampyridae, commonly known as the California Pink Glowworm. It is found in North America, with distribution records spanning Middle America and North America. The species was described by LeConte in 1874. As a member of Lampyridae, it possesses bioluminescent capabilities, though specific details of its light production and mating signals remain poorly documented in available sources.
Microphotus octarthrus
desert firefly
Microphotus octarthrus, commonly known as the desert firefly, is a species of bioluminescent beetle in the family Lampyridae. It was described by Fall in 1912. The species is found in arid regions of North America and is one of relatively few firefly species adapted to desert environments. Like other lampyrids, it produces light through chemical bioluminescence, though specific patterns and functions for this species remain poorly documented.
Motyxia
Sierra luminous millipedes, motyxias
Motyxia is a genus of blind, cyanide-producing millipedes endemic to three mountain ranges in California. All 11 species exhibit bioluminescence, making them one of only three known bioluminescent millipede groups worldwide. Adults range 3–4 cm in length with 20 body segments and prominent lateral keels (paranota). The genus was established by Chamberlin in 1941 and belongs to the tribe Xystocheirini within the family Xystodesmidae.
Myriapoda
myriapods
Myriapoda is a subphylum of terrestrial arthropods comprising approximately 13,000–16,000 described species across four extant classes: Chilopoda (centipedes), Diplopoda (millipedes), Pauropoda, and Symphyla. All myriapods are obligate terrestrial, characterized by elongated bodies with numerous segments bearing legs. The group represents one of the earliest arthropod lineages to colonize land, with fossil evidence dating to the Late Silurian–Early Devonian boundary. Myriapods exhibit diverse ecological roles: centipedes are primarily nocturnal predators using venomous forcipules, while millipedes, pauropods, and symphylans function predominantly as detritivores in soil and leaf litter ecosystems.
Oncaea
Oncaea is a genus of small marine copepods in the family Oncaeidae, order Poecilostomatoida. The genus includes bioluminescent species that exhibit internal (non-secreted) bioluminescence, a distinctive trait among copepods. Members occur in marine environments from tropical to polar regions, including the Arctic Ocean, Antarctic waters, and the Mediterranean Sea. Some species have been documented feeding on chaetognaths and other crustaceans, though feeding mechanisms appear complex and variable.
Orfelia fultoni
Foxfire Fly, dismalites
Orfelia fultoni is the only bioluminescent fly species known from North America. The larvae, commonly called 'dismalites' or 'glowworms,' produce the bluest light (~460 nm) of any studied bioluminescent insect. Larvae are carnivorous predators that construct sticky webs along stream banks and in caves, using paired bioluminescent lanterns to lure flying prey. Adults are non-feeding and short-lived. The species was discovered in 1940 near Glenville, North Carolina by B.B. Fulton and described by Elizabeth Gault Fisher.
Paraptorthodius
glowworm beetles
Paraptorthodius is a genus of glowworm beetles in the family Phengodidae, established by Schaeffer in 1904. The genus contains at least three described species distributed in Mexico and the southwestern United States. Like other phengodids, members of this genus are bioluminescent, with luminescence produced primarily by larviform females and larvae. The genus belongs to the tribe Mastinocerini within the subfamily Phengodinae.
Phengodes arizonensis
Arizona Glowworm Beetle
Phengodes arizonensis is a species of glowworm beetle in the family Phengodidae. The species is known from North America, with observations concentrated in the southwestern United States. Like other phengodid beetles, it exhibits bioluminescence. Larvae of related Phengodes species are specialist predators of millipedes, employing unique strategies to circumvent millipede chemical defenses.
Phengodes fusciceps
glowworm beetle
Phengodes fusciceps is a species of glowworm beetle in the family Phengodidae, described by LeConte in 1861. It is found in North America. The species comprises four recognized subspecies: P. f. fusciceps, P. f. floridensis, P. f. intermedia, and P. f. picicollis. Like other phengodid beetles, larvae are bioluminescent and exhibit specialized predatory behaviors.
Phengodes mexicana
glowworm beetle
Phengodes mexicana is a species of glowworm beetle in the family Phengodidae. The species was described by Wittmer in 1976. It occurs in Central America and North America. Members of the genus Phengodes are notable for their bioluminescent larvae and adult females, which are wingless and resemble larvae in appearance.
bioluminescentwingless-femalelarviform-femaleglowworm-beetlePhengodidaeElateriformiaPolyphagaColeopteraInsectaArthropodaAnimaliaCentral-AmericaNorth-AmericaWittmer-1976PhengodesPhengodes-mexicanaspeciesglowwormbeetleinsectarthropodanimalbioluminescencelarviformwinglessfemalelarvalarvaeadultmaledistributionrangegeographic-rangegeographic-distributionMiddle-AmericaAmericaAmericasWittmer1976descriptiontaxonomyclassificationmexicanaPhengodes plumosa
glow worm, railroad-worm, Plumose Glowworm Beetle
Phengodes plumosa is a glowworm beetle in the family Phengodidae. Larvae are bioluminescent and predatory, feeding primarily on millipedes. The species is found in North America. Common names include "railroad-worm," referring to the larval pattern of glowing spots that resemble train windows.
Photinus consimilis
Cattail Flash-train Firefly
Photinus consimilis, commonly known as the cattail flash-train firefly, is a medium-sized firefly species in the beetle family Lampyridae. It is native to eastern North America, where it inhabits wetlands and riparian areas. The species is recognized by its distinctive flash pattern of 3 to 9 quick pulses in a series lasting about 2 seconds, with 9 to 12 seconds of darkness between flash trains. Its specific epithet 'consimilis' refers to its morphological similarity to closely related Photinus species.
Photinus macdermotti
Father Mac's firefly, Mr. Mac
Photinus macdermotti is a medium-sized firefly species in the beetle family Lampyridae, native to eastern North America. Adults measure approximately 10 mm in length and are distinguished by a pale yellow pronotum with a black rectangular central mark bordered by red or pink. Males produce a characteristic flash pattern of two quick pulses separated by 2 seconds of darkness to attract females. The species is nearly identical in appearance to Photinus consanguineus and Photinus greeni, requiring careful identification.
Pleotomodes
Pleotomodes is a genus of fireflies (family Lampyridae) established by Green in 1948. The genus belongs to the tribe Pleotomini within the subfamily Lampyrinae. Members of this genus are bioluminescent beetles characterized by features typical of the Pleotomini tribe. The genus contains species distributed in certain regions, though detailed species-level documentation remains limited. Pleotomodes represents one of the lesser-documented genera within the diverse Lampyridae family.
Pterotus obscuripennis
Douglas fir glow-worm
Pterotus obscuripennis, commonly known as the Douglas fir glow-worm, is a species of firefly in the beetle family Lampyridae. It is endemic to North America and has been recorded primarily in western coastal regions. The species is notable for its bioluminescent larvae, which are referred to as 'glow-worms.' Adults are non-luminous and possess reduced or non-functional mouthparts.
Pyractomena dispersa
Marsh Flicker
Pyractomena dispersa is a firefly species in the beetle family Lampyridae, described by Green in 1957. It occurs in North America with a disjunct distribution split into eastern and western populations by the Great Plains. The species inhabits wetland habitats and has been documented in Alberta, Canada. It is known as the Marsh Flicker.
Pyractomena vexillaria
Pyractomena vexillaria is a species of firefly (beetle family Lampyridae) described by Gorham in 1881. The species occurs in Central America and North America. Like other members of the genus Pyractomena, it is a bioluminescent beetle, though specific details of its light display patterns and ecology remain poorly documented. The genus Pyractomena is distinguished by particular flash characteristics and adult morphology among North American firefly fauna.