speckled renia moth

(Renia adspergillus)

speckled renia moth
Photo by Alfredo Colon
  Hodges #


Conservation Status
  IUCN Red List

not listed


NNR - Unranked


not listed


Speckled renia moth is a common, medium-sized, litter moth. It occurs in the eastern United States from Maine to Florida, west to Wisconsin and Texas. It also occurs in southern Canada from Nova Scotia to Ontario. Minnesota is outside of the moth’s known range, but there is a single record in the state. It was recorded on July 26, 1969, in the former Carlos Avery Game Refuge, now part of the Carlos Avery Wildlife Management Area.

Little information can be found about the biology of this moth. The larvae probably feed on dead leaves and other organic debris, like other litter moths. Adults are active in the north from May to September. They are found in both forested and open areas.

Adults are roughly triangular in shape (deltoid). Males have a 1316 (30 mm) wingspan. Females are smaller, with a 1116 (27 mm) wingspan.

The sensory mouthparts (labial palps) are long, blade-like, and hairy. On the male they are curved upward. On the female they are projected forward, curved upward just at the tip.

The forewings are broad. The outer margin is convex and not angled. The ground color is pale gray. The entire surface is flecked with light brown and dark brown scales. The antemedial (AM) and postmedial (PM) lines are dark and strongly toothed. The AM line is strongly curved downward – toward the outer margin. The median band is broad, dark, and diffuse. The subterminal (ST) line is pale, thin, irregular, and usually broken. The PM line is not marked by dark dots. Above the ST line there is a series of thick, dark dots on the veins. The terminal line is represented by a row of dark dots. The round spot in the upper median area (orbicular spot) is small and pale yellowish, and it usually has a dark outline. The kidney-shaped spot (reniform spot) in the lower median area is pale yellowish, and it sometimes has a dark, crescent-shaped mark in the middle.

The hindwings are the same color as the forewings. The PM and ST lines are inconspicuous.




Male wingspan: 1316 (30 mm)

Female wingspan: 1116 (27 mm)


Similar Species


Forested and open areas




One generation per year in the north: May to September




Adults are active at night and will come to lights.


Life Cycle




Larva Food


Dead leaves and other organic debris


Adult Food




Distribution Map



21, 29, 30, 75, 82, 83.




Not known in Minnesota except for one historic record



Lepidoptera (butterflies and moths)  


Noctuoidea (owlet moths and allies)  


Erebidae (underwing, tiger, tussock, and allied moths)  


Herminiinae (litter moths)  


Renia (renia moths)  

In 2011 the family Arctiidae (tiger moths and lichen moths) was transferred to the family Erebidae mostly intact but demoted to a subfamily. The former subfamilies are now tribes, the former tribes now subtribes.




Crambus adspergillus

Renia larvalis

Renia restrictalis


Common Names


gray renia

speckled renia

speckled renia moth










Antemedial (AM) line

A thin line separating the basal area and the median area of the forewing of Lepidoptera.


Orbicular spot

A circular spot or outline in the upper median area near the antemedial line on the forewing of many moths.



Short for pedipalp. A segmented, finger-like process of an arthropod; one is attached to each maxilla and two are attached to the labium. They function as sense organs in spiders and insects, and as weapons in scorpions. Plural: palpi or palps.


Postmedial (PM) line

A thin line separating the median area and the postmedial area of the forewing of Lepidoptera.


Reniform spot

A kidney-shaped spot or outline in the lower median area near the PM line on the forewing of many moths.






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Alfredo Colon

    speckled renia moth      
MinnesotaSeasons.com Photos








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  Red eyes of the Speckled Renia Moth
Insects and Animals

Aug 20, 2023




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  Alfredo Colon

Location: Albany, NY

speckled renia moth  
MinnesotaSeasons.com Sightings






Created: 12/17/2023

Last Updated:

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