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Species Pyropyga nigricans

Firefly - Pyropyga nigricans Underachieving Firefly (In SoCal, they don't light!) - Pyropyga nigricans  Pyropyga nigricans - Pyropyga nigricans Pyropyga - Pyropyga nigricans Pyropyga nigricans (Say) - Pyropyga nigricans firefly - Pyropyga nigricans Coleoptera - Pyropyga nigricans Black Beetle with red shoulders - Pyropyga nigricans
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 Pyropyga
Species nigricans (Pyropyga nigricans)
Explanation of Names
Pyropyga nigricans (Say 1823)
nigricans = 'blackish'
Size
4.2-8.5 mm(1)
Identification
dark pronotal border varies to narrow and paler or indistinct, especially in specimens from Arizona. Complete elimination of the dark border is rare, but has been noted in a series from Corpus Christi, Texas. (1)
Range
most of NA (transcontinental) except se. US(1)(2)
Life Cycle
Neither sex is luminous
Remarks
rather uncommon east of the Mississippi River, very abundant from the Rocky Mts to the Pacific(1)
See Also
Pyropyga modesta Green
Body black, pronotum pale with median vitta.
In an occasional specimen from Arizona the pronotal borders are narrowly infuscate, never deep black as in P. nigricans. In one example, from Devils River, Texas, the pronotal vitta is partially obliterated. (1)
Range: mostly AZ, but also NM-TX-MO-OK / n. Mex. (1)
Internet References