Home / Crambid Snout Moths (Crambidae) / Melonworm Moth (Diaphania hyalinata)

Melonworm Moth (Diaphania hyalinata)

The melonworm moth is a member of the family of grass moths. They are easily recognizable from the bushy growth at the end of their abdomen.

Melonworm Moth


Scientific Classification

  • Family: Crambidae
  • Genus: Diaphania
  • Scientific Name: Diaphania hyalinata

Description and Identification


The caterpillars are initially colorless but soon become a pale yellow-green, and at the final stage, two distinct white lines can be observed running down its body. These larvae go through five instars. To give themselves shade, they construct a silken structure underneath the leaves of the host plant. The larval stage lasts for around 14 days.

Melonworm Moth Caterpillar



The color of the pupa tends to be either light or dark brown. Pupation occurs inside a cocoon made of silk with a leaf or two folded in. Pupae tend to be 1.2-1.5 cm long and 0.3-0.4 cm wide. This stage lasts for 9-10 days.

Melonworm Moth Pupa


Adult Moth

Sexual Dimorphism: Present but not prominent.

Color and Appearance

At the end of their abdomen, a bushy hair pencil is observed.

When the wings are opened, the center is an iridescent white color, with a brown border surrounding it. When the wings are closed, the colors remain observable.

Average wingspan: 2.5 cm

Flight pattern: Consistent

Season: October to November


Eggs tend to be initially greenish or white but become yellow later on. They are oval, flat, and are deposited in small clusters. These eggs are 0.07×0.06 cm in measurement.

Melonworm Moth Egg


Quick Facts

DistributionCentral and South America and the Caribbean
HabitatCultivated land and fields
Lifespan of AdultsAround 1 week
Host PlantsCucurbit plants like cucumber, melon, and squash
Adult DietDoes not feed

Did You Know

  • Swedish zoologist Carl Linnaeus first described this moth in 1767.
Melonworm Moth Image




Melonworm Moth Picture


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