| octogomphus specularis | | USA: California, San Mateo county | | 32967722 |
| octogomphus specularis | | usa: california, marin county, lagunitas creek at entrance to samuel p. taylor state park, just w. of lagunitas | | 1770790858 |
| octogomphus specularis | | usa: california, lake county, siegler cyn. creek, by siegler cyn. rd. 2 mi. sw of jct. of calif. hwy. 20 | | 1770600816 |