Diagnosis | Diagnosis: A small lizard which an be distinguished from other Middle merican Ameiva by the following comination of characters: Central gular scales moderately enlarged, irregular, scales of posterior one-half of gular region abruptly smaller than scales of anterior one-half (Figs. 14-15); moderate number of femoral pores (mean number for males, 34.2; females, 27.8); a transverse row of abruptly enlarged mesoptychial scales; eight longitudinal rows of ventral scutes; narrow middorsal field (mean paravertebral granules, PV = 26.1) which does not become darker laterally; continuous, well defined dorsolateral stripe and continuous to interrupted ventrolateral stripe, both usually retained throughout life. The middorsal field of Ameiva undiilata is broad (mean PV: males, 46.8; females, 45.6) and the ventrolateral light stripe is usually interrupted. Ameiva chaitzami also has a relatively broad middorsal field (mean PV: 38.1) and interrupted ventrolateral light stripes and, in addition, lacks a uniformly colored middorsal field (Echternacht 1971: 35).
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References |
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