Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

National Moth Week photos of insects and people. Here's how to add your images.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa


TaxonomyBrowse
Info
ImagesLinksBooksData

pyralis Group

what firefly is this? - Photinus pyralis Firefly - Photinus pyralis Photinus pyralis, male - Photinus pyralis - male Firefly - Photinus pyralis Photinus pyralis Large Firefly - Photinus pyralis - male Beetle larva - Photinus pyralis Firefly Beetle - Lateral - Photinus pyralis
Classification
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 Photinus
No Taxon pyralis Group
Explanation of Names
pyralis Group designated by Green (1956) (1)
Numbers
3 spp. (1)(2)
Identification
male ventral segment 5 with pale apical border, but not diagnostic as this character is shared by other spp. outside of this group(1)
Range
collectively: e. US to w. TX (2)
Habitat
usually found in woodland borders but in some places pyralis seems to be ecologically ubiquitous (at least in 1966). (2)
Remarks
pyralis Group
flash signals are either of the simple "flash-answer" type or of the "flash-delay-answer" type (2)

pyralis - e US (TX-FL-NY-NE), absent along s. Atlantic coast, found in var. habitats, male flash-pattern is a single long flash emitted during flight that resembles the letter J.
australis - se US (MO-FL-NC), nearly always confined to shaded areas and dense bushes, quick short flash every ~4 secs.
scintillans - ne US (NY-PA-MD area), brachypterous females, males give quick flash every 2.5 secs on avg.
Works Cited
1.Revision of the Nearctic species of Photinus (Lampyridae: Coleoptera).
Green, J.W. 1956. Proceedings of the California Academy of Sciences 28: 561–613.
2.Studies on the flash communication system in Photinus fireflies.
Lloyd, J.E. 1966. Museum of Zoology, University of Michigan 130: 1-95.