Hawaiian Beet Webworm Moth
ExploreInsects
Hawaiian Beet Webworm Moth
spoladea recurvalis
The Hawaiian Beet Webworm Moth (Spoladea recurvalis) is a widely distributed and visually striking species belonging to the crambid snout moth family. Despite its highly specific common name, this moth is genuinely cosmopolitan, occurring across tropical and subtropical regions worldwide, from Hawaii to Africa, Asia, and the Americas. The species is most renowned for its larval stage, known as the beet webworm, which is a notorious agricultural pest that can defoliate crops like spinach, beets, and amaranth. These industrious caterpillars construct delicate silk webs on the undersides of host leaves, creating tiny sanctuaries from which they feed. While gardeners and farmers might view them as a nuisance, the adult moths are beautiful, delicate creatures. Their bold, contrasting patterns of chocolate brown and crisp white make them easy to identify, adding a touch of elegance to evening gardens as they flutter erratically around porch lights and nectar-rich flowers.
Habitat: Typically found in agricultural fields, vegetable gardens, and weedy grasslands in tropical and subtropical regions where their host plants are abundant.
Appearance
This small but eye-catching moth features a wingspan of roughly 20 to 25 millimeters. Its wings are predominantly rich chocolate brown or blackish-brown, bisected by striking, broad, translucent white bands that run continuously across both the forewings and hindwings when the wings are spread. Additionally, the outer edges of the wings are trimmed with a delicate white fringe. The moth's slender, elongated abdomen is dark but clearly marked with thin, white transverse stripes. When at rest, it typically holds its wings out flat in a distinctive triangular or delta-wing posture, showcasing its vivid geometric patterns.
KingdomAnimaliaPhylumArthropodaClassInsectaOrderLepidopteraFamilyCrambidaeGenusSpoladea
Category
InsectsRarity
Common
Danger
1/5 · Very low
Snaps
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Interesting facts
Despite being called the Hawaiian Beet Webworm, this moth is completely cosmopolitan and can be found on nearly every continent.
In ideal tropical conditions, an entire generation of these moths can develop from egg to reproductive adult in less than a month.
The caterpillars are known as webworms because they spin tiny, silken shelters on the undersides of leaves to hide from predators while they eat.
When disturbed, the adult moths take flight in a very erratic, zigzagging pattern before quickly diving back into the vegetation to hide.
Special abilities
Ability
Silk Webbing
Larvae produce fine silk threads to fold or tie leaves together, creating a protective webbing shelter where they can feed safely hidden from predators.
Ability
Rapid Maturation
Under optimal warm temperatures, they are capable of completing their entire life cycle from egg to adult in just 30 days, enabling rapid population booms.
Ability
Evasive Flight
When disturbed during the day, adult moths take off in an erratic, zigzagging flight pattern before quickly diving back under foliage to camouflage themselves.
Measurements & details
- Length
- 1-2 cm
- Wingspan
- 2-3 cm
- Weight
- 0.0001-0.0003 kg
- Lifespan
- 0-1 years
- Clutch Size
- 100-200
- Incubation
- 3-5 days
Diet & Feeding
Larvae are voracious leaf-chewing herbivores that target specific plant families, while adult moths feed solely on flower nectar.
Age differences: Larvae consume solid plant tissue such as leaves and stems, whereas adults possess a proboscis adapted for drinking liquid nectar.
Primary Foods
- Beets
- Spinach
- Amaranth
- Pigweed
- Flower nectar
Foraging Method
- Foraging
Ecological connections
host plant
Sugar Beet
Beta vulgaris
Larvae feed extensively on the leaves, making it a primary food source for development.
host plant
Redroot Pigweed
Amaranthus retroflexus
A common agricultural weed that serves as a wild host for egg-laying and larval feeding.
eaten by
Mexican Free-tailed Bat
Tadarida brasiliensis
Hunted by aerial insectivores while the moths fly in search of mates and host plants at night.
Traits
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Also known as
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Safety
Danger
1/5 · Very low
No special safety notes yet.
Frequently Asked Questions
How to identify Hawaiian Beet Webworm Moth?
The easiest way to identify Hawaiian Beet Webworm Moth is to use the Snappit nature identifier app.
How long is Hawaiian Beet Webworm Moth?
1-2 cm
What is Hawaiian Beet Webworm Moth's wingspan?
2-3 cm
How much does Hawaiian Beet Webworm Moth weigh?
0.0001-0.0003 kg
How long does Hawaiian Beet Webworm Moth live?
0-1 years
What does Hawaiian Beet Webworm Moth eat?
Larvae are voracious leaf-chewing herbivores that target specific plant families, while adult moths feed solely on flower nectar.
Where is Hawaiian Beet Webworm Moth usually found?
Typically found in agricultural fields, vegetable gardens, and weedy grasslands in tropical and subtropical regions where their host plants are abundant.
How does Hawaiian Beet Webworm Moth hunt?
Foraging
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