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Black Foam Ant

A terrestrial, tied #14–20, a summer pattern. It is tied against 4 named insects in this book — May–October.

A low-floating terrestrial dry on a standard dry-fly hook in sizes 14 through 20, tied with black 8/0 thread. The body is black foam in two segments with a pinched waist between them; the legs are black Krystal Flash or fine rubber, three to a side; and a small orange or pink foam dot can be added on top as an indicator, since the fly itself is nearly impossible to track. It floats low, which is how a real ant sits — an ant riding high is the wrong ant. The dressing is tied against the black ant, Formicidae, on the water from June through September between 55 and 80 degrees, and against the cricket, Gryllidae, from August through October between 55 and 75 degrees. It is carried in summer and fished for trout on small brushy water, worked in against the bank and drifted in the film rather than on it.

What it looks like

A drawing, not a photograph, and not traced from one. Its proportions were read off 5 independent reference photographs of the pattern and written down as 5 measured characteristics — wing angle, tail length against the shank, how far a hackle fibre reaches — every one of which had to hold across more than one of them before it could be drawn. What survives across many photographs of a fly is the fly.

Two lumps and a waist. An ant's silhouette in the film is unmistakable and nothing else about the fly matters — which is why it needs no hackle and no wing to be taken. Drawn at #18 — 6.0 mm of shank and 3.0 mm of gape on a Tiemco 100.
#14#16#18#205 mm
The bare hook at every size this pattern is tied in, all to the same scale. There is no industry standard behind a hook number, so these are Tiemco 100 measurements and another maker's 14 will differ a little.

What it imitates

Each of these is the same hatch record the app's own panel reads, so a pattern recommended on a river card in the app is recommended for one of the insects below.

Tying recipe

In tying order. This dressing is the standard one — these patterns have been in the publicrecord for decades — and materials substitute freely: the proportions and the silhouette are the pattern, not the brand of dubbing.

HookStandard dry-fly hook, sizes 14–20
ThreadBlack 8/0
BodyBlack foam, tied in two segments with a pinched waist
LegsBlack Krystal Flash or fine rubber, three per side
IndicatorOptional small orange or pink foam dot

When to fish it

Any summer day on small brushy water. Fish it against the bank and in the film — an ant that rides high is the wrong ant.

A summer pattern. The insects it matches are active may–october, in water from 55°F to 80°F.

Target species

Rivers it fishes well

Rivers with a page here that sit in the regions where the insects this pattern imitates are recorded. It is a claim about coverage, not a report of a fish caught.

Related patterns

Same type of fly, or tied for the same insects.

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