Vine Hawk moths are beautiful creatures with streaks of silver on their back. They are excellent pollinators and do not cause humans any harm. But is vine hawk mouth caterpillar dangerous? Let’s find out.
You can find vine hawk moths predominantly in Africa, Europe, Asia, and Australia.
These moths belong to the Sphingidae family and are also called silver-striped hawk moths due to the intricate silver-colored markings on their long bodies.
They are the object of attention for many collectors of creepy crawlies.
While the adult moths are harmless, the caterpillars can cause severe damage to host plants. Let’s understand what harm they do and what you can do about it.
However, unlike dragonflies, lacewings keep their wings folded over their backs. These insects earn their name from the veins that crisscross their transparent wings to create a lacy appearance.
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What Is This Bug?
Vine hawk moths (Hippotion celerio) belong to the Lepidoptera order of the Insecta class in the Sphingidae family.
This is one of the largest families of moths in the world, and people usually know them as sphinx moths or hawk moths. The family has as many as 1,450 moth species under it.
Vine Hawk moths are one of the few that do well in captivity; therefore, many people breed them as pets.
These moths are usually crepuscular (nocturnal); their feeding and other activities happen at night. During the day, they like to spend time resting on grass, walls, or rocks.
They are good flyers and look somewhat like hummingbirds when flying. They have a long mouthpart for sucking nectar from flowers which looks almost like a hummingbird’s beak.
As adults, their primary food is nectar from flowers, and this also makes them excellent pollinators that are beneficial to plants.
Unfortunately, these bugs are notorious pests in their larval stage. They infest and defoliate plants like impatiens and grapevines.
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Where Does It Come From?
Vine hawk moths are natives of countries that fall in tropical climates of Asia and Africa. They are migratory and move to southern Europe or Australia during summers.
You can often find these moths in gardens and parks, fluttering near flowers. They are also common in the natural wilderness and the edges of woodlands and grasslands.
What Does It Look Like?
Adult hawk moths are brown. Their forewings have light brown stripes, with the color getting lighter near the edges. The hind wings have additional reddish-brown markings.
The average wingspan of the moth is between 2.3 – 3 inches.
The hawk moth larvae start out as small and green but later grow to become quite big. Their colors change to brown, red, or gray as they age.
There are two pairs of distinctive eye spots on these caterpillars’ first and second abdominal segments.
The large eyespots on the vine hawk moth caterpillar look almost like eyes
While the first eyespot is large and very clearly visible, the second eye spot is smaller.
The eye spots are a defense mechanism against predators, who get confused when they see the large eyes.
The rest of the abdominal segments have lines across the body, and the tail has a horn-like appendage curved backward.
The larvae can grow up to as long as 3 inches. Towards their final instar stages, they start to become browner, and the pupae are completely light brown.
Is It Dangerous?
Adult hawk moths are not dangerous for either humans or animals; they are neither venomous nor do they bite. However, if you ingest one by mistake, you might need medical attention.
The caterpillars are also non-venomous, but gardeners see them as pests because of their huge appetites. They can completely defoliate plants and destroy crops.
Can It Sting or Bite?
This species of moth do not have a mouth as adults; hence they cannot bite anything, let alone humans.
However, the caterpillar can sting you in the larval stage and cause skin irritation. Remember: stings are not the same as bites; bites are only caused when an insect uses its mouth.
These caterpillars have stinging hairs on their bodies, which go away once they pupate.
Is It Poisonous or Venomous?
As mentioned earlier, neither adults nor larvae of hawk moths are poisonous or venomous.
The larvae have fine hairs, which can sting humans when we touch them. The stings can cause minor localized swelling and red bumps that last only a few minutes to hours.
Is It Harmful to Plants?
As adults, hawk moths help sustain plants by pollination. When the adults feed on nectar, their haustellum (beak-like structure) collects pollen.
They can fly long distances and help spread the pollen. Research has shown that these moths can carry it as far as 18 miles!
On the other hand, hawk moth caterpillars are a pest for certain plants like tomatoes, potatoes, and even catalpa trees.
At its worst, this caterpillar can cause the following damage:
- Stunted growth
- Half eaten leaves
- Defoliation
- Chewed stems
However, the damage is often not as severe as other pests like aphids.
What Plants is it Attracted To?
Adult hawk moths are attracted to scented tubular flowers like Fuschia, carrot, wIllowherb, and papaya. Their flowers have ample nectar to suckle on.
Caterpillars are voracious eaters that primarily feed on foliage. Their common favorites include Himalayan balsam, willowherb, rosebay, bedstraw, grapevines, impatiens, and rumex plants.
How To Protect Your Crops Against This Caterpillar?
Hawk moth caterpillars can cause damage to your crop if they are left unchecked. It is important to identify the infestation before it is too late. Some of the common visible signs include
- Stunted shoots that seem to have stopped growing.
- You can spot small green larvae in clusters along the upper leaves of the plants.
- Leaves have visible holes in them.
Here are a few ways you can control the spread of the damage.
- If in small numbers, you can remove the larvae by hand and crush their heads manually.
- Plowing the surrounding soil a few inches deep can expose the pupae. Predatory birds and insects will take care of the rest.
- Natural pesticides like neem oil and Bacillus thuringiensis are also helpful in removing larvae without harming other insects.
- Bio-pesticides include Pyrethrin, and Spinosad can also work on them.
- Parasitoids like Snellenius hippotionus, Braconidae, and Palexorista sp can naturally eradicate the caterpillars.
If nothing else works, you might also turn to pesticides. Some common chemical pesticides used include 4%Phosalone, and 5% Malathion.
The first round of dusting is done a month after sowing, and the second phase is carried out 45 days after the first session.
[sc name=”bugquiz” ][/sc]Frequently Asked Questions
Are hawk moths harmless?
Yes, hawk moths are harmless to humans, pets, and other animals. These moths are non-venomous and non-poisonous. They even help pollinate plants.
However, hawk moth caterpillars are voracious eaters of foliage and can pose a threat to a few types of plants if left unchecked.
What does a vine hawk moth caterpillar eat?
Hawk moth caterpillars are known for feeding on plant leaves and can be seen on the underside of the leaves during day time.
They feed exclusively on plants like Himalayan balsam, willowherb, rosebay, and bedstraw. In gardens, these caterpillars are commonly seen attacking grapevine and Fuschia plants.
What eats hawk moth caterpillar?
Insects like ladybugs are commonly known to feed on caterpillars of any species. The ladybugs attack the larvae when they are small and have just hatched.
Braconid Wasps are among the most dangerous predators for hawk moth caterpillars as they use the moth larvae as an exclusive food source for their babies.
Do hawk moths bite or sting?
Hawk moth adults do not have a mouth to bite. While they do have a haustellum, it is not strong enough to bite. The caterpillars do not have a mouth to bite, either.
They are covered in fine hairs or stings that can cause skin irritation and rashes.
The Good Adults and the Naughty Kids!
Hawk moth adults are crucial for the survival of many plant species because of their excellent pollination abilities.
However, the vine hawk moth caterpillars can cause severe damage to some plants because they feed on their leaves.
Careful control can help utilize the species as pollinators while minimizing damage from them at the caterpillar stage. Thank you for reading!