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Genus Lucidota

Firefly - Lucidota atra Lampyrid Larva - Lucidota atra Unknown Leaf Beetle - Lucidota atra black firefly - Lucidota atra Lucidota atra in Kouchibouguac National Park - Lucidota atra Coleoptera - Lucidota atra Fireflies (Lucidota atra)? - Lucidota atra - male - female Lucidota luteicollis
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Elateriformia)
Superfamily Elateroidea (Click, Firefly and Soldier Beetles)
Family Lampyridae (Fireflies)
Subfamily Lampyrinae
Tribe Lucidotini
Genus Lucidota
Explanation of Names
Lucidota LaPorte 1833
from Latin lucidus 'bright, shining, clear'
a very large genus but with just 3 spp. in our area(1)
6-12 mm
Small day-flying fireflies with light-producing organs absent or reduced to small yellowish spots on last abdominal sternite in female or last two sternites in male; antennae long, flattened, but not quite serrate(2):

L. atra is ~12 mm; L. punctata is ~6 mm.
See Also
Ellychnia -diurnal, lacks light organs
Works Cited
1.American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea
Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). 2002. CRC Press LLC, Boca Raton, FL.
2.A Manual of Common Beetles of Eastern North America
Dillon, Elizabeth S., and Dillon, Lawrence. 1961. Row, Peterson, and Company.