Slender Clubtail ID

Lancet Clubtail, small size Distinct club with lateral yellow and yellow rectangle on S9	Ashy Clubtail dirty brown, indistinct markings, blue-gray eyes
Dusky Clubtail Note the overall dark coloration	Rapids Clubtail brightly colored with third pale lateral stripe
Beaverpond Clubtail Broad triangular frontal stripes	Harpoon Clubtail Resembles Ashy with broader frontal stripes

Lancet Clubtail dull blue eyes and yellow face, "Z" stripes	Ashy Clubtail Blue-gray eyes; z shaped frontal stripes
Dusky Clubtail Straight frontal stripes, deep blue eyes	Rapids Clubtail Broad "Z" frontal stripes
Beaverpond Clubtail broad-based triangular frontal stripes	Harpoon Clubtail Broad "Z" frontal stripes

Lancet Clubtail Noticeably clubbed. Bright dorsal markings, including a yellow rectangle on S9 and lateral yellow on S8&9	Ashy Clubtail dull brown, S9 usually dark dorsally, dull yellow laterally on S8&9
Dusky Clubtail Unclubbed, dull markings, may show pale rectangle on S9 which fades with age	Rapids Clubtail small marks on S3-7, S8&9 black dorsally with bold yellow lateral spots
Beaverpond Clubtail black with narrow streaks dorsally	Harpoon Clubtail Abdomen largely black with narrow dorsal lines

Lancet Clubtail Cerci and epiproct about equal, cerci nearly straight dorsally with a downward wedgie	Ashy Clubtail Cerci wider than epiproct, wedgie smaller and more dorsal than Lancet
Dusky Clubtail epiproct wider than cerci, cerci with ventral tooth and a single barb visible dorsally	Rapids Clubtail Yup, it's got claspers, someday I'll get a better photo! The cerci have a ventral tooth and an indistinct lateral tooth when viewed dosally
Beaverpond Clubtail Epiproct wider than cerci, cerci with ventral tooth, arrowhead shape dorsally	Harpoon Clubtail Epiproct wider than cerci, cerci with ventral tooth, dorsally a single barb, like a harpoon