Melanotus piceatus

Blatchley

click beetle, wireworm

Melanotus piceatus is a North in the . are moderate-sized (11–12 mm), elongate, and dark red- to black. The species has been studied for its chemistry, with females producing (2Z,6E)-farnesyl acetate as the primary compound. inhabit soil for extended periods, leading to a multiyear . Adults are active above-ground in spring and summer, with peak activity from May through June.

Pronunciation

How to pronounce Melanotus piceatus: //ˌmɛləˈnoʊtəs paɪˈsiːeɪtəs//

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Identification

are 11–12 mm in length, elongate in form, and dark red- to black in color. The can be distinguished from the Melanotus insipiens through chemistry: M. piceatus females produce (2Z,6E)-farnesyl acetate and (2E,6E)-farnesyl acetate, whereas M. insipiens females produce decyl octanoate and decyl butanoate. Males of each species respond specifically to their respective primary pheromone component.

Habitat

stages inhabit subterranean soil for months or years. have been collected from agricultural fields, wooded areas, and residential neighborhoods. Collection methods include UV light trapping, beating vegetation, and incandescent porch lights, suggesting surface activity.

Distribution

Southeastern United States. Confirmed collection records from South Carolina.

Seasonality

activity occurs primarily from May through June.

Life Cycle

stages develop in soil for months or years before pupating. The has a multiyear . are active above-ground in spring and summer for mating and -laying, with eggs probably laid in or on soil.

Behavior

Males are attracted to female-produced , specifically (2Z,6E)-farnesyl acetate. are attracted to UV light and incandescent porch lights, indicating activity.

Human Relevance

Identification of the provides a tool for and potentially managing this . The species has been collected from agricultural settings, though specific damage relationships have not been detailed.

Similar Taxa

  • Melanotus insipiens with overlapping range; distinguished by chemistry (decyl butanoate primary component versus (2Z,6E)-farnesyl acetate in M. piceatus) and male antennal response specificity.
  • Melanotus communisCongeneric found in agricultural systems; distinguished by components and geographic distribution (M. communis is a corn wireworm pest in northern regions).

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