TABLE OF CONTENTS
Argasidae (Soft Ticks): Morphology and Identification Features
Argasidae, commonly known as soft ticks, is a family of ticks characterized by a leathery, mammillated body that lacks a scutum. They can be distinguished from hard ticks by their morphology, including the position of the capitulum, absence of ventral plates and festoons, and distinct developmental stages.
Morphology
- The integument (body) is leathery, mammillated, and lacks a scutum.
- In nymphs and adults, the capitulum is situated anteriorly on the ventral surface.
- Eyes are absent, or there may be two pairs situated laterally in the supracoxal folds.
- A pair of spiracles is situated posterolaterally to the third coxa.
- Festoons and ventral plates are absent.
- The larva has three pairs of legs, and the mouthparts are present dorsally at the anterior end.
- There are 1–5 nymphal stages.
Hard Tick vs. Soft Tick
| Feature | Soft Ticks (Argasidae) | Hard Ticks (Ixodidae) |
|---|---|---|
| Scutum | Absent | Present |
| Capitulum in adults | Ventral | Anterior |
| Body | Leathery and mammillated | Hard and covered by a scutum |
| Feeding | Usually brief in nymphs and adults | Generally prolonged |
| Nymphal stages | 1–5 | Usually 1 |
