Explanation of Names
Group designated by Green (1956) (1)
male ventral segment 5 with pale apical border, but not diagnostic as this character is shared by other spp. outside of this group(1)
collectively: e. US to w. TX (2)
usually found in woodland borders but in some places pyralis
seems to be ecologically ubiquitous (at least in 1966). (2)
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.