============================================================================ Light | Spectrum (µ) |Emission |Observer |Method and remarks | |maximum | | ----------------+----------------+---------+-----------+-------------------- Cypridina | 0.610-0.415 | |Harvey, |Eye observation, hilgendorfii | | | 1919 | Zeiss comparison | | | | spectroscope. Chætopterus | 0.55-0.44 | |Lancaster, |Eye observation. insignis | (approximately)| | 1868 | Pyrophorus | 0.72-0.486 | |Dubois, |Eye observation. noctilucus | | | 1886 | Pyrophorus | .640 - .468 | 0.57 |Langley |Eye observation noctilucus | | | and Very,| and comparison (thoracic | | | 1890 | with solar light) | | | | spectrum of | | | | equal intensity. Pyrophorus | .663 - .463 | | | noctilucus | | | | (abdominal | | | | light) | | | | Photinus | .67 - .51 | |Ives and |Photographic pyralis | | | Coblentz,| comparison with | | | 1909 | carbon glow lamp | | | | of equal | | | | intensity. Photuris | .59 - .51 | .552 |Coblentz, |Photographic pennsylvanica | | | 1912 | comparison with | | | | carbon glow lamp | | | | of equal | | | | intensity. Photinus | .65 - .52 | .578 |Coblentz, |Photographic consanguineus | | | 1912 | comparison with | | | | carbon glow lamp | | | | of equal | | | | intensity. Phengodes | .65 - .52 | |McDermott, |Eye observation. laticollis | | | 1911 e | Lampyris | .656- .518 | |Conroy, |Eye observation. (glow worm) | | | 1910 | Photinus | .670- .487 | |Young, |Eye observation | | | 1870 | direct vision | | | | spectroscope.