Tachopteryx

The entirely gray thorax combined with gray and black abdomen distinguishes adults from other petalurids. The non-burrowing larval habit is unique among Petaluridae and can be identified by the presence of shallow larval pits or crypts rather than deep burrows.

Adults inhabit highlands, woodlands, and deciduous forests with permanent seeps. Larvae occur in shallow pits or crypts in groundwater-dependent habitats, often associated with skunk cabbage and ferns as indicators of seep presence.

East Coast of the United States from New York south to Florida, and west to Texas.

Larval stage is non-fossorial (non-burrowing), contrasting with the typical burrowing habit of other petalurid dragonflies. Larvae establish shallow pits or crypts as habitat modification behavior rather than constructing deep burrows.

Larvae engage in habitat modification by establishing crypts or shallow depressions in substrate. This represents an intermediate or modified behavioral state between non-burrowing and the typical fossorial burrowing habit characteristic of other petalurids.

• Other Petaluridae generaMost other petalurids have fossorial (burrowing) larvae that construct deep burrows, whereas Tachopteryx larvae are non-burrowing and create only shallow pits

• dragonfly
• petaltail
• non-burrowing
• monotypic genus
• seep habitat

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• Establishment of larval pits byTachopteryx thoreyi(Odonata: Petaluridae): habitat modification by a non-burrowing petalurid