NEW RECORD OF SIREN INTERMEDIA (CAUDATA: SIRENIDAE
) FOR VERACRUZ, MEXICO
The genital kidney of the Rhyacotritonidae is characterized by a number of characteristics most similar to that of Sirenidae
(i.e., the testis communicates with the Wolffian duct via a sequential arrangement of vasa efferentia, renal corpuscles, and efferent epididymal ducts; no longitudinal duct or afferent epididymal ducts were observed), many of which have not been described previously in other salamanders.
Family/Host Species Locality Prevalence (1) Reference Amphiumidae Amphiuma tridactylum Louisiana 6/85 (7.1%) Bennett & Humes Plethodontidae (1938) Eurycea lucifuga Tennessee 1/549 (0.2%) This study Eurycea neotenes Texas 1/86 (1.2%) McAllister (1990) Salamandridae Notophthalmus Massachusetts 1/1 (100%) McAllister (1990) viridescens Sirenidae
Here we describe two relatively well-preserved Amphiuma vertebrae from the site, and illustrate and discuss vertebral characters and structures that clearly separate this taxon from those of the other North American aquatic eel-like salamanders of the family Sirenidae
. We also discuss problems with the identification of isolated Amphiuma vertebrae to the species level.
richmondi Netting & Mittleman, ravine SE salamander Pseudotriton ruber (Sonnini), northern red SC salamander Family Sirenidae
(sirens) Siren intermedia LeConte, lesser siren W Order Anura (toads and frogs) Family Pelobatidae (spadefoot toads) Scaphiopus holbrookii (Harlan), eastern spadefoot S Family Bufonidae (toads) Bufo americanus Holbrook, American toad N,C,SE B.
Fauth and Resetarits (1991) examined the effects of the lesser siren, Siren intermedia (Sirenidae
), and the broken striped newt, N.
u/i, table 1) are found in other salamandrid genera (e.g., Salamandra), and in most other urodeles, with the exception of taxa with reduced (e.g., Amphiumidae, Sirenidae
, Proteidae, which have lost digits and even entire limbs) or miniaturized limbs (e.g., Thorius, Nototriton, Bradytriton, Parvimolge, and Oedipina).
Figure 17-1 starting at node linking Sirenidae
with other salamanders, Figure 17-3 starting at basal node, [2,N(fig.