Table 1.
Presence of the mandibular duct and type of insertion of both levator anguli oris (LAO) and intermandibularis posterior pars posterior (IPP) muscles in dissected species of the snail-eating dipsadine clade
| Species | Mandibular duct | LAO insertion | IPP insertion |
|---|---|---|---|
|
Dipsas albifrons |
Present |
Anterior region of dentary |
Connected to the gland |
|
Dipsas alternans |
Present |
Anterior region of dentary |
Connected to the gland |
|
Dipsas brevifascies |
Absent |
Anterior region of dentary |
Parallel to the gland |
|
Dipsas bucephala |
Present |
Anterior region of dentary |
Connected to the gland |
|
Dipsas catesbyi |
Present |
Anterior region of dentary |
Parallel to the gland |
|
Dipsas gracilis |
Present |
Anterior region of dentary |
Parallel to the gland |
|
Dipsas incerta |
Present |
Anterior region of dentary |
Parallel to the gland |
|
Dipsas indica |
Present |
Anterior region of dentary |
Connected to the gland |
|
Dipsas neivai |
Present |
Anterior region of dentary |
Connected to the gland |
|
Dipsas oreas |
Present |
Anterior region of dentary |
? |
|
Dipsas pakaraima |
Absent |
Anterior region of dentary |
Parallel to the gland |
|
Dipsas pavonina |
Present |
Anterior region of dentary |
Connected to the gland |
|
Dipsas peruana |
Present |
Anterior region of dentary |
Connected to the gland |
|
Dipsas sanctijoannis |
Present |
Anterior region of dentary |
Parallel to the gland |
|
Dipsas temporalis |
Absent |
Anterior region of dentary |
Parallel to the gland |
|
Dipsas tenuissima |
Absent |
Anterior region of dentary |
? |
|
Dipsas variegata |
Present |
Anterior region of dentary |
Connected to the gland |
|
Sibon annulatus |
Absent |
Infralabial gland |
Parallel to the gland |
|
Sibon carri |
Absent |
Infralabial gland |
Parallel to the gland |
|
Sibon dimidiatus |
Absent |
Infralabial gland |
Parallel to the gland |
|
Sibon nebulatus |
Absent |
Infralabial gland |
Parallel to the gland |
|
Sibon sanniolus |
Absent |
Infralabial gland |
Parallel to the gland |
|
Sibynomorphus garmani |
Present |
Anterior region of dentary |
? |
|
Sibynomorphus lavillai |
Present |
Anterior region of dentary |
Connected to the gland |
|
Sibynomorphus mikanii |
Present |
Anterior region of dentary |
Parallel to the gland |
|
Sibynomorphus neuwiedi |
Present |
Anterior region of dentary |
Parallel to the gland |
|
Sibynomorphus petersi |
Present |
Anterior region of dentary |
Connected to the gland |
|
Sibynomorphus turgidus |
Present |
Anterior region of dentary |
Parallel to the gland |
|
Sibynomorphus vagus |
Absent |
Anterior region of dentary |
Connected to the gland |
|
Sibynomorphus ventrimaculatus |
Present |
Anterior region of dentary |
Parallel to the gland |
|
Sibynomorphus williamsi |
Present |
Anterior region of dentary |
? |
|
Tropidodipsas fischeri |
Absent |
Infralabial gland |
Parallel to the gland |
| Tropidodipsas sartorii | Absent | Infralabial gland | Parallel to the gland |