Micronaspis floridana

Larvae can be distinguished from other firefly larvae by the combination of: quadruply-spined tergites (four spines per segment), retractable head, faint green bioluminescence, and occurrence exclusively in intertidal salt marsh habitats. Adults presumably share the restricted habitat association, but specific diagnostic features for adults are not documented in available sources. The species' geographic restriction to coastal Florida and the Bahamas is a key identifying context.

Strictly confined to intertidal zones of coastal salt marshes. In Florida, occurs in small, private mangrove marshes and similar coastal wetlands along the peninsular coast. Habitat characterized by moist, algae-covered rocks and muddy substrates subject to tidal inundation.

Endemic to coastal Florida (peninsular coast) and the Bahamas (Grand Bahama island). Distribution records indicate presence in Caribbean and North America regions. Highly restricted 'shoestring' geographic range along coastlines.

Adults are nocturnal. Larvae have been observed active at night in July. Specific seasonal activity patterns are not well documented.

Larval stage documented; larvae approximately 10 mm long. Larvae exhibit retractable head and bioluminescence. Egg and pupal stages not described in available sources. Life cycle presumably includes egg, larva, pupa, and adult stages typical of Lampyridae, but specific details are undocumented.

Larvae move slowly through moist substrates. Both larvae and adults are nocturnally active. Larvae produce faint green bioluminescent glow. Adults presumably use bioluminescence for mating communication, as in other fireflies, but specific behaviors are undocumented.

Predatory role as larvae, typical of lampyrid larvae which feed on soft-bodied invertebrates. Specific prey items are not documented. Bioluminescence may serve anti-predator or communication functions.

Subject of conservation concern due to restricted range and habitat threats. Serves as model organism for studying genetic isolation and speciation. Discovery of larvae has been used in science education and outreach to engage young naturalists. Threatened by coastal development, storm surges, and sea level rise; Hurricane Dorian caused major population impacts on Grand Bahama.

• Tetracha floridanaShares similar restricted intertidal salt marsh habitat in Florida and is also a rare Florida-endemic species, but belongs to family Carabidae (tiger beetles) rather than Lampyridae; adults and larvae readily distinguished by family-level characteristics including raptorial larval morphology and adult elytra structure.
• Other Lampyridae larvaeOther firefly larvae lack the quadruply-spined tergites and are not restricted to intertidal salt marsh habitats; most occur in terrestrial moist environments such as leaf litter and soil.

• endemic
• intertidal
• bioluminescent
• threatened
• monotypic genus
• salt marsh
• Florida endemic

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• Lampyridae | Beetles In The Bush