Infralabial


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In`fra`la´bi`al


a.1.(Zool.) Below the lower lip; - said of certain scales of reptiles and fishes.
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MHN-UC 0123 MHN-UC 0133 MHN-UC 0134 Sex [masculinidad] [feminidad] [masculinidad] Snout vent lenght (mm) 352 369 330 Tail lenght (mm) 95 42 202 Dorsal scale rows 17 17 17 Ventral scales 144 144 150 Subcaudal scales 34 17 85 Supralabial scales 7 7 7 Infralabial scales 7 7 7 Preocular/subpreocular 2/1 2/1 2/1 Postocular scales 2 2 2
texana head markings in the area of sympatry include a large yellow post-orbital spot, bold supralabial and infralabial stripes, and numerous ventral medial stripes.
Escamas gulares contenidas hasta siete veces en la ultima infralabial, son redondas, convexas y yuxtapuestas.
Measurements and scale counts follow Peters (1964): 1) head length; 2) head width; 3) snout length; 4) interorbital length; 5) rostral height, 6) rostral width, 7) supralabial scales; 8) infralabial scales; 9) preocular scales; 10) postocular scales; 11) interocular scales; 12) canthal scales; 13) post-canthals (marginal head scales between the canthal and supraocular); 14) intercanthal scales; 15) foveals; 16) internasals (separated or not); 17) ventrals (Dowling 1951); 18) preventrals; 19) subcaudals; 20) dorsal scale rows; 21) loreals; 22) interrictals (supracephalic scales between last supralabials); 23) nasofrontals (scales anterior to and including the interoculars, Porras et al.
The outer labiomental row extends anteriorly to the mental (M) or to the level of the 1st or 2nd infralabial as follows: 1-1, 77; 1-?
Black pigment on the snout of the paratype is practically identical in extent to that of the holotype; on the lower jaw it includes the entire mental and most of the adjacent first infralabial scales.
Two previous temporais; one postnasal; first infralabials in contact behind the mental one.
The following counts were taken: number of ventrals (VS), number of subcaudals (SC), number of dorsals 1-head length behind the head (DS1), number of dorsals at the position of middle ventral (DS2), number of dorsals 1-head length before the tail (DS3), number of infralabials touched by the first sublabial (ISL), number of supralabials (Left + Right) (SL1), number of supralabials touching the eyes (Left + Right) (SL2), number of loreals (Left + Right) (LR), number of infralabials (Left + Right) (IL), number of temporals (Left + Right) (TP), number of postoculars (Left + Right) (PO), number of supralabials (Left + Right) (SL).
Meristic counts included--ventrals (V); subcaudals (SC); supralabials (SL); infralabials (IL); anterior temporals (AT); dorsal scale rows (DSR) at the level of V10, at midbody, and two V anterior to the anal plate; maxillary teeth (Mx).
Preoculars 1-1; postoculars 2-2; temporals 2-2-3 on both sides; supralabials 8-8; infralabials 12-12; scale rows 25-29-19; ventrals 223; subcaudals 71 (plus 2-4 missing at tip); anal divided; median dorsals weakly keeled, beginning with the vertebral scale row posterior to the anterior third of body (where all dorsals are smooth) and increasing within a span of 20 ventrals to the median eight rows; no keels on tail, others smooth or very faintly keeled; two apical pits on all dorsal scales of both body and tail, except erratic (present, absent or only one of the pair, usually the more medial one, present) on the first dorsal scale row.
Scutellation: There are 7/8 supralabials, 10/10 infralabials, 15 rows of smooth dorsal scales without reduction, 0 preoculars, 2 postoculars, and 1 + 3 temporals.