The relationships of this species are with _Hyla rickardsi_ Taylor, a species known only from the foothills of the Sierra Madre Oriental in the states of Puebla and Veracruz. The distinguishing characteristics of these species are given in Table 1. Living individuals may be distinguished immediately by the flash colors on the thighs--red in _loquax_ and yellow in _rickardsi_. The calls of the two species are distinctly different; that of _rickardsi_ is a high-pitched, loud rattle continued for several seconds, notably different from the goose-like honk of _loquax_. TABLE 1.--COMPARISON OF CERTAIN CHARACTERS IN HYLA LOQUAX AND HYLA RICKARDSI =================================+================+==================== CHARACTER | _loquax_ | _rickardsi_ ---------------------------------+----------------+-------------------- Toe webbing | Full | Three-fourths | | Finger webbing | Three-fourths | One-half | | Average snout-vent length (Male) | 41.7 mm. | 37.4 mm. | | Tympanum/eye (Male) | 63.2% | 55.8% | | Dorsal leg pattern | Barred | Unmarked | | Tarsal fold | Tubercular | Absent | | Tarsal stripe | Absent or | Broad, indistinct, | indistinct | or absent | | Dorsolateral stripe | Absent | Present | | Light line over anus | Broad | Narrow | | Flash colors | Red | Yellow | | Iris color | Copper | Bronze ---------------------------------+----------------+--------------------