# Acmaeodera Opacula Acmaeodera opacula is a fascinating species of jewel beetle that belongs to a unique group known colloquially as 'flower buprestids.' Unlike many of their metallic, iridescent relatives that blend into leaves and bark, these small, industrious beetles are most commonly found taking center stage on the blooms of native wildflowers. They serve a dual ecological purpose in their arid and semi-arid habitats. As adults, they act as minor pollinators while feeding on pollen and petals, inadvertently transferring pollen from flower to flower. In their larval stage, they are critical decomposers, boring into dead or dying wood to help break down tough plant material and recycle nutrients back into the ecosystem. - **Category:** [Insects](https://www.snappit.app/explore/categories/insect) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Habitat:** Found in dry, open woodlands, scrublands, and desert margins, often resting conspicuously on the blossoms of native wildflowers. ![Acmaeodera Opacula](https://inaturalist-open-data.s3.amazonaws.com/photos/56117897/medium.jpg) Photo: Evan M. Raskin, CC BY 4.0 · [iNaturalist](https://www.inaturalist.org/photos/56117897) ## Appearance This species features a relatively small, elongated, and somewhat cylindrical body that is slightly flattened. Unlike most typical beetles, Acmaeodera lack a visible scutellum (the small triangular plate between the bases of the wing covers). The 'opacula' in its name suggests a duller, more opaque exterior compared to the flashy brilliance of other jewel beetles. It generally presents with a dark, often brownish-black to black base color, typically mottled or banded with subtle lighter markings such as yellow, orange, or reddish spots that help it blend into the dappled light of the flowers it frequents. ## Taxonomy - **Kingdom:** Animalia - **Phylum:** Arthropoda - **Class:** Insecta - **Order:** Coleoptera - **Family:** Buprestidae - **Genus:** Acmaeodera ## Interesting facts - Because of their fused wing bases, they are quite agile flyers, able to take off rapidly when disturbed on a flower. - Species in the genus Acmaeodera are highly unusual among beetles because they lack a visible scutellum, the small triangular plate typically seen between the wing covers. - Their specific epithet 'opacula' hints at a somewhat less shiny, more opaque exoskeleton, setting them apart from the famously bright, iridescent members of the jewel beetle family. ## Special abilities - **Fused Elytra:** Like others in its genus, this beetle has the bases of its wing covers (elytra) fused together, allowing it to fly effectively without fully opening them. - **Deadwood Digestion:** In its larval stage, it possesses specialized enzymes in its gut that allow it to digest tough cellulose and lignin from dead and dying timber. - **Thermal Tolerance:** It thrives in hot, arid environments, exhibiting physiological adaptations that prevent desiccation during the peak heat of the day. ## Measurements & details - **Length:** 1 cm - **Wingspan:** 1-2 cm - **Weight:** 0.00001-0.00005 kg - **Lifespan:** 1-3 years - **Clutch Size:** 10-40 - **Incubation:** 10-21 days ## Diet & Feeding Adults feed primarily on the pollen, nectar, and petals of flowers, while the larvae consume the wood of dead or dying trees and shrubs. - **Age differences:** There is a complete dietary shift during metamorphosis; larvae are xylophagous (wood-eating) borers, whereas adults are florivorous (flower-eating). - **Primary Foods:** Pollen, Flower petals, Nectar, Decaying wood (larvae) - **Foraging Method:** Foraging ## Ecological connections - **Host plant:** [Brittlebush](https://www.snappit.app/explore/brittlebush) (*Encelia farinosa*) — Adults often visit the flowers of these desert shrubs to feed on pollen. - **Eaten by:** [Hairy Woodpecker](https://www.snappit.app/explore/hairy-woodpecker) (*Leuconotopicus villosus*) — Woodpeckers forage for the wood-boring larvae hidden inside dead branches. - **Parasite:** Chalcid Wasp (*Chalcididae*) — Parasitoid wasps seek out the hidden larvae of jewel beetles to lay their eggs. ## Safety **Danger:** 1/5 · Very low No special safety notes yet. ## Frequently Asked Questions ### How to identify Acmaeodera Opacula? Look for hard wing covers meeting in a line down the back, then compare the antennae, body shape, legs and markings. Metallic colors shift a lot with lighting. Beetle Identifier: upload a photo and compare the visible details. ### How long is Acmaeodera Opacula? 1 cm ### What is Acmaeodera Opacula's wingspan? 1-2 cm ### How much does Acmaeodera Opacula weigh? 0.00001-0.00005 kg ### How long does Acmaeodera Opacula live? 1-3 years ### What does Acmaeodera Opacula eat? Adults feed primarily on the pollen, nectar, and petals of flowers, while the larvae consume the wood of dead or dying trees and shrubs. ### Where is Acmaeodera Opacula usually found? Found in dry, open woodlands, scrublands, and desert margins, often resting conspicuously on the blossoms of native wildflowers. ### How does Acmaeodera Opacula hunt? Foraging ## Where to spot - [Living Desert Zoo and Gardens State Park](https://www.snappit.app/guides/places/living-desert-zoo-and-gardens-state-park) — New Mexico, US · Botanical Garden ## More Insects - [Common Eastern Bumble Bee](https://www.snappit.app/explore/common-eastern-bumble-bee) (*Bombus impatiens*) - [Spotted Lanternfly](https://www.snappit.app/explore/spotted-lanternfly) (*Lycorma delicatula*) - [Brown-belted Bumble Bee](https://www.snappit.app/explore/brown-belted-bumble-bee) (*Bombus griseocollis*) - [Eastern Carpenter Bee](https://www.snappit.app/explore/eastern-carpenter-bee) (*Xylocopa virginica*) --- Source: [Acmaeodera Opacula: Facts & Places to See — Snappit](https://www.snappit.app/explore/acmaeodera-opacula)