ColeopteraLampyridae – Fireflies

California Glowworm

Ellychnia californica

This record describes Ellychnia californica (species). Recorded family: Lampyridae. Recorded order: Coleoptera.

Identification and Appearance

California Glowworm - Ellychnia californica
Contributed by John F. Carr; Additional contributions by Aaron Schusteff , v belov

Sides of median black area of pronotum straight, diverging from apex to base, with a small antebasal lobe extending into roseate area; in the sympatric E. megista , the black area is subparallel to the base, where it slightly widens (no antebasal lobe)[cite:2075434,42]

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Coleoptera (Beetles)
Suborder
Polyphaga
Superfamily
Elateroidea
Family
Lampyridae (Fireflies)
Subfamily
Lampyrinae
Tribe
Lucidotini
Genus
Ellychnia (Diurnal Fireflies)

Imported taxonomy record. Source availability varies; see the source references and editorial policy below.

Habitat and Range

Habitat

On flowers and grassy vegetation, esp. in moist habitats

Geographic Range

Throughout CA, more common from Sacramento to San Bernardino Mts[cite:2075434,42]

Seasonal Activity

Said to overwinter as adults.

Additional species information

Species notes from the sources

Etymology: Ellychnia californica Motschulsky 1853

About Primitive Winged Insects: the wider group

Order-level background for Coleoptera, the group containing Ellychnia californica. Species-specific details appear above.

Group overview

Coleoptera is the largest order of insects with over 400,000 described species, representing ~25% of all known animal species and ~40% of all insects. In the U.S. alone, nearly 30,000 beetle species have been identified.

Ecological role of the group

Beetles are prominent decomposers, especially in forests, breaking down dead wood and recycling nutrients. As predators, they reduce populations of pest insects. Many species are also important pollinators of flowering plants.

Economic and practical significance of the group

Beetles have major economic significance: leaf beetles (Chrysomelidae) and weevils (Curculionoidea) are among the most destructive agricultural pests globally, costing billions annually, while predatory species like ladybugs provide natural pest control.

Recorded sources for this group: Britannica, Smithsonian, NCSU Entomology. Imported estimates may describe particular regions or reporting periods.

Explore Coleoptera families and species →

Photos of California Glowworm (5)

California Glowworm - photo 1
Contributed by John F. Carr; Additional contributions by Aaron Schusteff , v belov
California Glowworm - photo 2
Contributed by John F. Carr; Additional contributions by Aaron Schusteff , v belov
California Glowworm - photo 3
Contributed by John F. Carr; Additional contributions by Aaron Schusteff , v belov
California Glowworm - photo 4
Contributed by John F. Carr; Additional contributions by Aaron Schusteff , v belov
California Glowworm - photo 5
Contributed by John F. Carr; Additional contributions by Aaron Schusteff , v belov

Photo credits: Contributed by John F. Carr; Additional contributions by Aaron Schusteff , v belov

Frequently Asked Questions About California Glowworm

What is California Glowworm?

California Glowworm (Ellychnia californica) is a species in the family Lampyridae, within the order Coleoptera.

How big is California Glowworm?

10.5‒16 mm[cite:2075434]

How do you identify California Glowworm?

Sides of median black area of pronotum straight, diverging from apex to base, with a small antebasal lobe extending into roseate area; in the sympatric E. megista , the black area is subparallel to the base, where it slightly widens (no antebasal lobe)[cite:2075434,42]

Where is California Glowworm found?
FeatureDetails
HabitatOn flowers and grassy vegetation, esp. in moist habitats
RangeThroughout CA, more common from Sacramento to San Bernardino Mts[cite:2075434,42]
When is California Glowworm active?

California Glowworm: seasonal activity - Said to overwinter as adults..

How we use and review source data. Source count does not imply independent verification.

Photo credits: Contributed by John F. Carr; Additional contributions by Aaron Schusteff , v belov. Contributors retain copyright over their individual contributions.