Thyce

Thyce can be distinguished from related genera by features of the clypeus and pronotum, though specific diagnostic characters require examination of specimens. The genus is closely related to Hypothyce, from which it may be separated by subtle morphological differences in the male genitalia and body proportions. Adults are moderate-sized scarabs with the general body form typical of Melolonthinae.

Based on the closely related genus Hypothyce, Thyce species likely inhabit sandy habitats including sandhills and scrub areas with sparse vegetation. Hypothyce rayi was collected from longleaf pine/sand ridge habitat, suggesting Thyce may occupy similar xeric, sandy environments in the southeastern United States.

Nearctic region. Thyce squamicollis was described from the western United States, while T. deserta occurs in desert regions of the southwestern United States and Mexico. The genus as a whole is distributed across North America.

Larvae of Melolonthinae, including Thyce, typically develop in soil where they feed on roots of grasses and other plants. Adults are short-lived and primarily focused on reproduction.

Adults are nocturnal and attracted to light. Males are capable of flight; females of related species in Hypothyce have been observed to be flightless, though this has not been confirmed for Thyce.

Larvae function as root-feeders in soil ecosystems, contributing to nutrient cycling and soil aeration. Adults may serve as prey for nocturnal predators and participate in pollination through incidental contact with flowers.

Larvae may occasionally damage crops or turfgrass through root-feeding, though specific economic impacts for Thyce have not been documented. Adults are sometimes encountered at porch lights and blacklights by collectors.

• HypothyceClosely related genus in the same tribe Melolonthini; historically has been confused with Thyce. Hypothyce species are distinguished by features of the male genitalia and often have more restricted distributions to sandhill habitats.
• PhyllophagaLarge genus of Melolonthinae with similar adult morphology and shared common name 'junebug.' Phyllophaga species generally have more eastern and widespread distributions and differ in details of the clypeal suture and antennal lamellae.

• Scarabaeidae
• Melolonthinae
• Melolonthini
• Nearctic
• soil-dwelling larvae
• nocturnal
• light-attracted

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• A new species of Hypothyce (Coleoptera, Scarabaeidae, Melolonthinae) from Alabama, United States of America.