Haementeria laevis

External morphology

Based on the original description, it can be inferred that the somite is triannulate, with the primary annuli α and β ventrally subdivided, and that on the dorsal aspect, all annuli are undivided. No traces of tubercles or eyes are discernible. The mouth is situated at the apex of the capitulum, which is composed of the first 7 annuli. The gonopores are separated by annuli 19 and 20. The anus is located between annuli 69 and 70.

Internal morphology

The salivary glands are arborescent, extending as far as the first pair of testes. There are seven pairs of lateral crop diverticula—the first pair featuring an anterior accessory branc - or, in juveniles, eight pairs of diverticula. There are seven 7 pairs of testes.

Habitat & range

Habitat

Freshwater

Region

South America

Recorded from

Brazil