Phengodes

Illiger, 1807

glowworms

Species Guides

7

Phengodes is a of glowworm beetles in the Phengodidae, containing more than 30 described . The genus is particularly diverse in Mexico, where 21 species have been documented. Larvae of at least some species are specialized of millipedes, employing unique strategies to circumvent their prey's chemical defenses.

Phengodes mexicana by (c) Jared Shorma, some rights reserved (CC BY), uploaded by Jared Shorma. Used under a CC-BY license.Phengodes mexicana by (c) Jared Shorma, some rights reserved (CC BY), uploaded by Jared Shorma. Used under a CC-BY license.Phengodes mexicana by (c) Jared Shorma, some rights reserved (CC BY), uploaded by Jared Shorma. Used under a CC-BY license.

Pronunciation

How to pronounce Phengodes: //fɛnˈɡoʊdiːz//

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Distribution

Mexico and other parts of the Americas. The is especially well-documented in Mexico, where 21 have been recorded.

Diet

Larvae of Phengodes laticollis have been observed preying on millipedes (Diplopoda). The larvae pierce thinner regions of the 's , such as intersegmental on the surface, with hollow sickle-shaped and inject gastric fluids that paralyze the prey, preventing discharge of defensive glands.

Behavior

are bioluminescent. Larvae are ambush that slowly approach prey before quickly grabbing and subduing them.

Ecological Role

Larvae function as specialized of millipedes, occupying a exploited by relatively few predators due to the millipedes' potent chemical defenses (benzoquinones and hydrogen cyanide).

Similar Taxa

  • Other PhengodidaePhengodes is distinguished within Phengodidae by specific morphological characteristics detailed in taxonomic keys; other phengodid lack the documented strategy observed in Phengodes laticollis.
  • Fireflies (Lampyridae)Both groups contain bioluminescent beetles, but Phengodes belongs to Phengodidae, a separate distinguished by morphological and behavioral differences; fireflies typically use light for mating signals rather than prey attraction.

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