Drawida incomparabilis

Context

Researchers have discovered a new earthworm species, Drawida incomparabilis, in the Western Ghats of Kerala and Tamil Nadu.

About Drawida incomparabilis

1. Type: A newly identified earthworm species.
2. Family: Moniligastridae.
3. Habitat: Evergreen and deciduous forests of the Western Ghats.
4. Size: Approximately 217–392 mm in length.
5. Distinctive Features: It has glandular prostates and gizzards located unusually far back in its body, distinguishing it from other known species of the genus Drawida.

About Family Moniligastridae

1. It is a diverse family of soil-dwelling earthworms.
2. It contains approximately 194 valid species distributed across five genera.
3. Genus Drawida: It is the most species-rich genus in this family and is an important component of Asian soil ecosystems.

What Are Earthworms?

1. Earthworms are segmented, soil-dwelling invertebrates that play an important role in maintaining soil health.
2. Key Features
   1. Body structure: Their bodies consist of ring-like segments, with some internal organs repeated across segments.
   2. Respiration: They breathe through their moist skin and do not have lungs.
   3. Sensory organs: They lack eyes but use specialised cells in their skin to detect light, touch, vibrations and chemicals.
   4. Circulation: They have five pairs of aortic arches, commonly described as their five pairs of hearts.
   5. Food: They feed mainly on decaying plant material and other organic matter.

Ecological Importance of Earthworms

1. Improve soil fertility: Their waste material adds nutrients to the soil.
2. Improve soil structure: Their burrows allow air and water to enter the soil.
3. Support decomposition: They help break down dead plant material and recycle nutrients.
4. Maintain ecosystem health: They support soil formation and improve conditions for plant growth.

Frequently Asked Questions (FAQs)

Q1. What is Drawida incomparabilis?

It is a newly identified earthworm species discovered in the Western Ghats of Kerala and Tamil Nadu. It belongs to the family Moniligastridae.

Q2. What are the distinctive features of Drawida incomparabilis?

It measures approximately 217–392 mm in length. Its distinctive features include glandular prostates and gizzards located unusually far back in the body.

Q3. What is the family Moniligastridae?

Moniligastridae is a diverse family of soil-dwelling earthworms containing approximately 194 valid species across five genera. Drawida is its most species-rich genus.