---
title: "Semiothisa bisignata"
description: "Macaria bisignata — Insecten en spinnen. Macaria bisignata, the redheaded inchworm, is a moth of the family Geometridae."
canonical: https://animalchecklist.com/nl/animal/red-headed-inchworm-moth
last_updated: 2026-09-20
---

# Semiothisa bisignata

> Macaria bisignata — Insecten en spinnen. Macaria bisignata, the redheaded inchworm, is a moth of the  family Geometridae.

- Scientific name: *Macaria bisignata*
- Category: `insects` (Insecten en spinnen)
- Habitats: unknown
- iNaturalist observations: 11621
- Wikidata: [Q13556965](https://www.wikidata.org/wiki/Q13556965)
- iNaturalist taxon: [146886](https://www.inaturalist.org/taxa/146886)

## Names

- en: Red-headed Inchworm Moth
- de: Semiothisa bisignata
- es: Semiothisa bisignata
- fr: Semiothisa bisignata
- it: Semiothisa bisignata
- nl: Semiothisa bisignata
- pt: Semiothisa bisignata
- pl: Semiothisa bisignata

## Countries with the most observations

US (3674), CA (920), MX (5)

## Summary

Macaria bisignata, the redheaded inchworm, is a moth of the  family Geometridae. It is found from Newfoundland to Georgia, west to Arizona, north to Ontario.
The wingspan is about 25 mm (0.98 in). The moths are on wing from May to August depending on the location.
The head is reddish brown in color.
A particular characteristic of markings are the 3 or 4 dark brown marks where the antemedial, medial, and postmedial lines meet costa (forewing leading edge) and by a larger, subrectangular spot where subterminal band meets costa. Another segment of subterminal band usually persists as a smaller dark spot between M3 and…

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Macaria_bisignata

## Photo

![Semiothisa bisignata](https://animalchecklist.com/img/animals/red-headed-inchworm-moth/medium.jpg)

Photo: Lynn Harper · CC0 · inaturalist — https://www.inaturalist.org/observations/304559825

## Machine access

`GET https://animalchecklist.com/api/v1/animals/red-headed-inchworm-moth?lang=nl` — see [openapi.json](https://animalchecklist.com/openapi.json).