Amblycera vs Ischnocera Lice: Key Differences in Veterinary Parasitology
Amblycera and Ischnocera are two major groups of chewing lice that parasitize birds and mammals. They can be differentiated based on important morphological and behavioral characteristics, including the structure and position of the antennae, type of mandibles, presence of maxillary palps, thoracic segmentation, activity, and behavior after host death.
Amblyceran and ischnoceran lice are both parasites of birds and mammals. The following are the major differences between them:
| Amblycera | Ischnocera |
|---|---|
| The antenna is hidden in a socket on the ventral side of the head and is not visibly seen. | The antenna is prominent, long, and filiform, and is visible on the sides of the head. |
| The mandibles bite horizontally. | The mandibles bite vertically. |
| The maxillary palp is 4-jointed. | The maxillary palp is completely absent. |
| The mesothorax and metathorax are separate. | The mesothorax and metathorax are fused together. |
| Amblycera lice are more active. | Ischnocera lice are less active. |
| When the host dies, it may leave the host and move onto a nearby host of the same species. | They die on the host itself. |
| Examples: Menopon gallinae, Menacanthus stramineus, Heterodoxus spiniger | Examples: Trichodectes canis, Felicola subrostratus, Bovicola bovis |
