banded hairstreak

(Satyrium calanus)

               
Conservation Status

IUCN Red List

not yet assessed

banded hairstreak

NatureServe

N5 - Secure

S5 - Secure

Minnesota

not listed

Occurrence

Widespread but uncommon. Population fluctuates. Sometimes locally common but few in number.

Flight/Season

One generation: Late May* to early August
_________________________

* Cedar Creek Ecosystem Science Reserve

Habitat

Woodland edges, open areas adjacent to oak woodlands, parks, and yards

Size

Wingspan: to 1

Photo by John Shier

Identification

This is a small to medium-sized butterfly with a wingspan of to 1. It perches with wings closed and is rarely seen from above.

The underside of both wings is grayish-brown or brownish-gray with darker brown spots. On the forewing there is a row of narrow submarginal spots, a row of larger postmedial spots, and a pair of medial spots. The submarginal spots are outlined with white on the inside only and fade out as they approach the wing tip. The postmedial spots are rectangular and more or less connected. They are outlined with white usually on the outside only, rarely also lightly outlined on the inside as well. The hindwing is similarly marked with crescent-shaped submarginal spots, a more jagged line of postmedial spots, and two pair of medial spots. There are also a few to several submarginal orange spots and a blue spot at the outer angle that is not capped with orange. There are two tails near the tip, one long and one short.

The eyes are black.

The antennae are black-and-white striped with a orange-tipped club.

The caterpillar is wide, somewhat flattened, and short, no more than 1 long. It is highly variable in appearance. It is green with a number of pale stripes at first, turning brown just before pupating. There are usually a pair of subdorsal stripes over the thorax that may continue over the abdomen. Between the subdorsal stripes there is often a dark patch or darker pigment on the second thoracic segment and on abdominal segments 1 and 6 through 10. Each abdominal segment has a subspiracular stripe and a pair of oblique stripes between the subdorsal and subspiracular stripes.

Mature caterpillars are found in late spring before the foliage is mature.

 
Similar
Species

 


Larval Food

Catkins and young leaves of mostly oak (Quercus spp.), but also walnut (Juglans spp.), and hickory (Carya spp.)

 
Adult Food

Nectar of flowers, especially milkweed and dogbane, but also sumac, sweet clover, yarrow, meadowsweet, and New Jersey tea.

 
Life Cycle

During the summer the female lays eggs singly on twigs of host species. The eggs overwinter and hatch in the spring.

 
Behavior

 


Distribution Distribution Map  

Sources: 7, 21, 24, 27, 29, 30, 71, 72.


Comments

Uncommon
There are eight hairstreak butterfly species found in Minnesota. All of them are uncommon or rare in the state. Banded hairstreak is the most common of these.

Subspecies
There are four subspecies of banded hairstreak. Falacer hairstreak (Satyrium calanus falacer) was formerly considered a separate species, Satyrium falacer. It is the only subspecies found in Minnesota.


Taxonomy

Order:

Lepidoptera (butterflies and moths)

 

Suborder:

Glossata

 

Infraorder:

Neolepidoptera

 

Parvorder:

Heteroneura

 

No Rank:

Ditrysia

 

No Rank:

Obtectomera

 

Superfamily:

Papilionoidea (butterflies [excluding skippers])

 

Family:

Lycaenidae (gossamer-wings)

 

Subfamily:

Theclinae (hairstreak butterflies)

 

Tribe:

Eumaeini

 
Subordinate Taxa

banded hairstreak (Satyrium calanus albidus)

banded hairstreak (Satyrium calanus calanus)

Falacer hairstreak (Satyrium calanus falacer)

Godart’s hairstreak (Satyrium calanus godarti)

 
Synonyms

Satyrium falacer

 
Common
Names

banded hairstreak


 

 

 

 

 

 

 

 

 

 

 

 

       

Visitor Photos

   
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John Shier


It was apparent to me that this is one I don't commonly see... At least we have a bright background -- butterfly weed.

  banded hairstreak    

       
       
       

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  Banded Hairstreak
Henryr10
 
   
 
About

Satyrium calanus

 
     
  hairstreak (possibly Satyrium calanus)
Bill Keim
 
  hairstreak (possibly Satyrium calanus)  

 

slideshow

     

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Other Videos

 
  Banded Hairstreak Butterfly (Lycaenidae: Satyrium calanus) on Ground
Carl Barrentine
 
   
 
About

Published on Jul 9, 2011

Photographed at the Turtle River State Park, North Dakota (08 July 2011).

 
     
  Banded Hairstreak Nectaring Butterflyweed 2 - July 9, 2014
Don Gagnon
 
   
 
About

Published on Jul 10, 2014

Banded Hairstreak (Satyrium calanus), nectaring Butterflyweed (Asclepias tuberosa​), Part 2, Butterfly Garden, Gagnon Wildlife Habitat, Wednesday afternoon, July 9, 2014, 1:45 PM - Panasonic Lumix DMC-FZ70 00181 / 00182; 50 sec.

 
     
  Banded Hairstreak and Ants
MJBugs
 
   
 
About

Published on Apr 20, 2011

This banded hairstreak (Satyrium calanus) larva looks to be tended by ants. Note that there are two discolorations on the larva, one is an ant and the other may be a scar from a parasitoid.

 
     
  Banded Hairstreak
Paul Sweet
 
   
 
About

Published on Dec 2, 2010

Tips for identifying one of N. Illinois' most common butterflies.

 
     

 

Camcorder

         

Visitor Sightings

   
Share your sighting of this insect.

John Shier
6/23/2018

Location: At Whitetail Ridge regional park in Dakota County

It was apparent to me that this is one I don't commonly see... At least we have a bright background -- butterfly weed.

banded hairstreak


     
     
 

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