Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

See Moth submissions from National Moth Week 2023

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Previous events


Species Maladera formosae - Asiatic Garden Beetle

Asiatic Garden Beetle  - Maladera formosae Unknown Red Beetle - Maladera formosae Serica from night of August 11, 2011 - Maladera formosae Red Beetle - Maladera formosae Maladera castanea - Maladera formosae Maladera castanea - Maladera formosae Unknown - Maladera formosae 2018-07-26 Small reddish scarab - Maladera formosae
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
Superfamily Scarabaeoidea
Family Scarabaeidae (Scarab Beetles)
Subfamily Melolonthinae (May Beetles and Junebugs)
Tribe Sericini
Genus Maladera
Species formosae (Asiatic Garden Beetle)
Synonyms and other taxonomic changes
Maladera castanea (Arrow 1913)
Explanation of Names
Maladera formosae (Brenske 1898)
presumably named after Formosa (the early European name for Taiwan)
8-11 mm(1)
Most closely resembles Serica, but has the hind tibiae wider. Ventrites 5 thru 7 have a transverse row of spines extending the width of each segment. Backward projecting hairs on top of head
native to temperate East Asia, adventive and established in e NA (NS-FL-AL to KS)(1)
Feeds at night on leaves of roses, chrysanthemums.
Life Cycle
Larvae are found in turf, gardens
Comes to lights, sometimes in great numbers
earliest record in our area: NJ 1921(1)
Print References
Internet References
Fact sheet (Skelley 2013)(1)
Works Cited
1.University of Florida: Featured Creatures
2.Scarab beetles (Coleoptera: Scarabaeidae) of South Carolina
Phillip J. Harpootlian. 2001. Clemson University Public Service.
3.A monograph of the genus Maladera Mulsant & Rey, 1871 of China (Coleoptera: Scarabaeidae: Melolonthinae: Sericini)
Fabrizi S, Liu W-G, Bai M, Yang X-K, Ahrens D. 2021. Zootaxa 4922: 1–400.