pandorus sphinx

(Eumorpha pandorus)

pandorus sphinx
Photo by Chad & Autumn Brekke
  Hodges #

7859

 
 
Conservation Status
  IUCN Red List

not listed

     
  NatureServe

NNR - Unranked

SNR - Unranked

     
  Minnesota

not listed

     
           
           
           
 
Description
 
 

Pandorus sphinx is a very large, dramatically patterned, sphinx moth. It has a wingspan of 3¼ to 4½. Females are slightly larger than males.

The adult is heavy-bodied and has relatively small wings. The thorax is pale green. The structures on the thorax covering each wing base (tegulae) are dark. The abdomen is long and tapered. The antennae are thread-like, thickened, and somewhat spindle-shaped at the tip.

The bristle or group of bristles (frenulum) present on most moths that keep the wings together in flight is present but small on this moth.

The forewing is long and narrow, and pointed, with a smooth, slightly convex outer margin. It is pale green with a complex pattern of dark olive-green markings. There is a squarish, dark olive green patch along the inner margin near the base, abutting an even darker patch of similar size and shape in the middle of the inner margin, and a smaller patch on the inner margin near the outer edge. There is also a patch in the median area above the discal cell, and a patch with a pale outline at the tip. Pink streaks over two of the veins extend from the discal area to the subterminal area, and there is a pink streak on the inner margin between the middle and outer dark spots. A pale eyespot in the discal area (discal spot) has two black spots.

The hindwing is whitish near the base, grading to pale green near the outer margin. There is a dark olive-green patch in the median area near the inner margin, a dark patch in the subterminal area, and a pink patch at the anal angle. The second (Sc+R1) and third (Rs) veins behind the leading edge of the hindwing are parallel from the base to the end of the discal cell. They are united by an oblique cross-vein at about the middle of the discal cell. The underside of both wings is usually yellowish-green, sometimes pale brown.

The caterpillar is up to 3½ long. It may be green, orange, pink, or reddish-brown. The third thoracic segment (T3) is greatly swollen. When the caterpillar is alarmed, the head, T1, and T2 are withdrawn into it. Caterpillars pass through five stages (instars) before pupating. The third through fifth instar caterpillars have conspicuous pale spots surrounding the breathing pores (spiracles) of the third through seventh abdominal segments (A3–A7). The spots are pale yellow to white and have a thin black border. A2 sometimes has a similar but much smaller spot. The thorax and A1–A3 are generously peppered with tiny black dots. These gradually dissipate further down the abdomen. There is a slender, coiled, whip-like horn at the back (posterior) of A8 on all early instar caterpillars. This is replaced by a hardened, slightly raised eyespot on the last instar.

Mature caterpillars can be found from July to November. They are very large and consume copious amounts of foliage. They can completely defoliate young grape vines, ultimately killing them. Older vines can withstand the damage.

 
     
 

Size

 
 

Total Length: 1¾ to 2

Wingspan: 3¼ to 4½

 
     
 

Similar Species

 
  Achemon sphinx (Eumorpha achemon) is smaller and less common. Adults are brown, not green. The caterpillars have much more peppering on all abdominal segments. The pale spots over the spiracles are notched, dividing them into three parts, and giving them a coiled appearance.  
     
 
Habitat
 
 

Forest edges, woodlands, fields, river margins, vineyards, gardens

 
     
 
Biology
 
 

Season

 
 

One generation per year: May to September (Wisconsin)

 
     
 

Behavior

 
 

Adults fly at dusk.

 
     
 

Life Cycle

 
 

Adults emerge in June. Females attract males by releasing pheromones at night. After mating, the female lays translucent green, almost spherical eggs singly on the underside of host plant leaves. The eggs hatch in 6 to 8 days. The caterpillars feed on the leaves. They pass through five instars. In the fall, fifth instar caterpillars burrow 4 to 6 into the soil, pupate, and overwinter. The pupae wiggle to the soil surface just before emergence (eclosion).

 
     
 

Larva Hosts

 
 

In Minnesota, leaves of grape (Vitis spp.) and Virginia creeper (Parthenocissus spp.). Elsewhere, also peppervine (Ampelopsis spp.).

 
     
 

Adult Food

 
 

Nectar of a variety of flowers

 
     
 
Distribution
 
 

Distribution Map

 

Sources

21, 24, 29, 30, 75.

 
  7/22/2018      
         
 

Occurrence

 
 

Common and widespread in eastern United States

 
         
 
Taxonomy
 
 

Order

Lepidoptera (butterflies and moths)  
 

Suborder

Glossata  
 

Infraorder

Neolepidoptera  
  Parvorder Heteroneura  
  No Rank Ditrysia  
  No Rank Obtectomera  
 

Superfamily

Bombycoidea (hawk-moths)  
 

Family

Sphingidae (hawk moths, sphinx moths, and hornworms)  
 

Subfamily

Macroglossinae (small sphinx moths)  
 

Tribe

Philampelini  
  Genus Eumorpha  
       
 

The name of the subfamily, Macroglossinae, is shared with a subfamily of large bats (megabats). This violates the rules of the International Code of Zoological Nomenclature (ICBN), and one of the subfamilies will probably be renamed in the future.

 
       
 

Synonyms

 
 

Eumorpha pandora

 
       
 

Common Names

 
 

pandora sphinx

pandorus sphinx

pandorus sphinx moth

 
       

 

 

 

 

 

 

 

Glossary

Frenulum

A spine (male) or multiple spines (female) at the base of the costal edge of the hindwing of many moths that couples with the retinaculum on the forewing to keep the wings in contact which each other.

 

Instar

The developmental stage of arthropods between each molt; in insects, the developmental stage of the larvae or nymph.

 

Pupa

The life stage of some insects undergoing transformation. In caterpillars, the chrysalis. Plural: pupae.

 

Spiracle

A small opening on the surface of an insect through which the insect breathes.

 

Tegula

A small, hardened, plate, scale, or flap-like structure that overlaps the base of the forewing of insects in the orders Lepidoptera, Hymenoptera, Diptera, and Homoptera. Plural: tegulae.

 

 

 

 

 

 
 
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Chad & Autumn Brekke

 
 

Found resting on our kids swing set

 
    pandorus sphinx   pandorus sphinx  
           
 
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Other Videos
 
  Pandorus Sphinx Moth - CTnaturalist Online
CTnaturalist
 
   
 
About

Published on Jul 10, 2010

The Pandorus Sphinx Moth is a large nocturnal moth with a wingspan reaching lengths of 4 1/2 inches.

This specimen is resting during the daylight hours, until dusk arrives.

The remarkable color patterns make this species a wonderful find for any nature enthusiast.

Large compound eyes help the moth navigate in darkness. It's body is covered with small hairs, a macro lens offers an up-close look.

Females lay single eggs on the leaves of grape vines and Virginia Creeper, the favorite foods of their caterpillars. Today, our moth is perched on a wild grape leaf.

Caterpillars feed voraciously and overwinter as a pupa underground.

Adults are active on summer nights and often feed on the nectar of suburban garden flowers -- including petunias.

Be on the look out in your backyard this summer. If you're lucky, you too will spot the beautiful, pandorus sphinx moth.

 
  Cool Bug: "Pandorus Sphinx Moth".. visiting my veggie garden
OrganicGarden123
 
   
 
About

Published on Jul 25, 2010

What IS this cool bug? ANSWER: "Pandorus Sphinx Moth" (Eumorpha pandorus). (For a while we thought it was "Oleandar Hawk Moth", an African-Asian moth never before seen in North America, but alas it is a more common moth, but still just as beautiful).

Filmed July 14, 2010, on the leaf of a cucumber or gourd in my front yard vegetable garden, northeaster USA.

 
  Pandorus Sphinx Moth caterpillar (Eumorpha pandorus)
CobraHeadTools
 
   
 
About

Published on Sep 8, 2014

Pandorus Sphinx Moth caterpillar, Eumorpha pandorus

 
  Pandora Sphinx Moth (Eumorpha pandorus)
David Podgor
 
   
 
About

Published on Jul 24, 2014

Video of a Pandora Sphinx Moth also known as Eumorpha pandorus, found in Frederick, Maryland in late July 2014. For more information go to: https://en.wikipedia.org/wiki/Eumorpha_pandorus

 
  Pandora Sphinx moth showing off her wings.
Sabrina B
 
   
 
About

Published on May 7, 2010

She was hanging out on my front porch, so I brought her in for a visit. She is vibrating her wings, probably to scare me. I think she's beautiful. And of course, I let her go back outside after I took a few pictures and recorded this.

 
       

 

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  Chad & Autumn Brekke
7/20/2018

Location: Kilkenny, Minnesota

Found resting on our kids swing set

pandorus sphinx  
           
 
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