Myogale zygomaticus subsp. minor

WHIDDEN, HOWARD P., 2000, Comparative Myology of Moles and the Phylogeny of the Talpidae (Mammalia, Lipotyphla), American Museum Novitates 3294, pp. 1-53 : 11

M. zygomaticus minor ( fig. 5 )

ORIGIN: As an aponeurosis from a small ridge just posterior to the base of the zygomatic arch, deep to the origin of M. zygomaticus major .

INSERTION: Via a long, slender tendon that runs anteriorly along the lateral surface of the snout to insert into the lateral margin of the external naris.

REMARKS: Similar in Desmana , Neurotrichus , Parascalops , Scaptonyx , Uropsilus , and Urotrichus . In Condylura , the tendon for this muscle splits and extends out into the lateral nasal rays. Scalopus and Scapanus have dorsally oriented nostrils, and the insertion of this muscle is on the posterior margin of the external naris. Talpa has nostrils in a ventrally oriented nose pad, and the insertion of this muscle is on the ventral margin of the external naris.

Figures

Fig. 5. Lateral view of snout muscles of Parascalops. A, Superficial layer; B, middle layer; C, deep layer.