European earwig population density surveys and fruit scarring

These data were gathered in four successive surveys of ca. 90 blocks of commercially produced citrus growing in California's San Joaquin Valley.  Data also include two measures of fruit scarring, one that involved 'bin samples' (i.e., checks of already-harvested fruit in large harvest bins) and one involving checking maturing fruit that are still on the trees., European earwig population density surveys
We manufactured wooden board traps to survey 93 commercial citrus blocks, including navel oranges, Citrus sinensis (n = 73 blocks), clementines, Citrus clementina (n = 16 blocks), tangelos, Citrus x tangelo (n = 2), and mixed varieties (n = 2) growing in eastern Tulare and Fresno Counties, CA.  Board traps were 25.4 x 25.4 cm squares of OSB (oriented strand board) sheathing, 1.82 cm thick; OSB is an inexpensive, engineered wood panel, made of small wood strands glued together with waterproof adhesives.  Boards were distributed across each block in six locations, at each of which three adjacent trees received one board trap each for a total of 18 boards/citrus block, except for a few very small blocks that received 9 boards/block.  Boards were deployed in the citrus blocks during February, 2022, placed under the edge of the citrus canopy, and subsequently visited during four time periods in the spring and late fall of 2022 and 2023 to count F. a..., , # European earwig population density surveys and fruit scarring

[https://doi.org/10.5061/dryad.k6djh9whd](https://doi.org/10.5061/dryad.k6djh9whd)

## Description of the data and file structure

These data were collected for two reasons: (1) first, to characterize the densities of the European earwig generally encountered in commercial citrus groves in California's San Joaquin Valley, and (2) to quantify fruit scarring for maturing or mature fruit that might be generated by European earwigs.

Some of the cells are empty. These reflect citrus groves that we were unable to sample on particular dates, usually because of some farming operation that was underway (irrigation, pesticide application, etc.) that would have made sampling dangerous.

### Files and variables

#### File: Earwig\_data\_for\_archive.xlsx

**Description:** 

##### Variables

| Site\_number | Anonymized code for site ID ...