Skip to Main Content
Life history and notes on the biology of Stelidota octomaculata (Coleoptera:Nitidulidae)Author(s): Jimmy R. Galford; Roger N. Williams; Ann Daugherty; Ann Daugherty
Source: Res. Pap. NE-644. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 7 p.
Publication Series: Research Paper (RP)
Station: Northeastern Research Station
View PDF (822.99 KB)
DescriptionThe life history of Stelidota octomaculata (Say) was studied in Ohio and Pennsylvania. This insect damages acorns and affects the establishment of oak seedlings. Acorns deployed in wire cages and pitfall traps plus a sampling of naturally occurring acorns were used to monitor insect activity. AdLllts overwinter in forest litter and begin feeding on undamaged germinating or damaged acorns in March. Acorns damaged by the beetles may fail to produce seedlings. Beetle reproduction occurs in spring and early summer inside acorns both above and below ground. Reproduction ceases in late July to early August. Adult activity may continue until early December in some years. In the laboratory, a life cycle was completed in about 34 days at 220 to 26%. The maximum number of offspring from a female was 933 and the maximum lifespan at room temperature was 238 days. Acorns of all species tested plus seeds of 28 other species were suitable for larval development.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationGalford, Jimmy R.; Williams, Roger N.; Daugherty, Ann 1991. Life history and notes on the biology of Stelidota octomaculata (Coleoptera:Nitidulidae). Res. Pap. NE-644. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 7 p.
KeywordsNitidulidae, oak regeneration, acorn pests
- Millipede damage to germinating acorns of northern red oak
- Acorn Weevils, Rodents, and Deer All Contribute to Oak-Regeneration Difficulties in Pennsylvania
- Using X-Ray Image Analysis to Assess the Viability of Northern Red Oak Acorns: Implications for Seed Handlers
XML: View XML