imbricate basal and echinate apical scale microornamentation pattern of Pantherophis guttatus, P.
Ampelita milloti is perhaps more similar in having axial riblets on the protoconch and lacking spiral microsculpture, but its teleoconch sculpture is finer, the axial elements more irregular and fragmented, appearing granular rather than lamellate
(particularly evident on the base).
Gonopod tibiotarsus widely enlarged, with lamellate
sheath, solenomere acute (Fig.
Metafemur rather tumid, weakly enlarged; tibial spines prominent bur shorter than diameter of respective tibia; parempodia lamellate
, somewhat semicircular, subparallel or apically convergent.
It consists of the lamellate
endocuticle and epicuticle layers, which become more discernible in the lateral regions (Fig.
The pretarsus is also distinctive, with the distally angulate claws (11-1), greatly expanded lamellate
parempodia (12-1), and greatly enlarged pulvilli (13-1).
Urodidae can be characterized by 5 possible autapomorphies: the lamellate
male antennae, a hair-pencil on the base of the male hindwing costa; the larval prothorax without seta MXD1; the larval abdominal segment VIII with L3 ventroanterior to L1 and L2 and SV1 almost as high as L3; the larval prolegs elongate, medially constricted, with mesoseries of crochets (Kyrki 1988; Dugdale et al.
5 whorls; sculpture strongly cancellate; first whorl initially sculptured only with widely spaced, rib-like, axial pliculae (ca 15), but 3 spiral cords develop soon thereafter, one forming shoulder, another level with the abapical suture and the third between these at whorl periphery; cords persist and become progressively stronger with growth; an additional (fourth) subsutural cord may or may not develop on the shoulder during the last or penultimate whorl; no intermediary spiral cords; intervals between cords wider than cords themselves; last adult whorl with 20-30 axial pliculae; pliculae narrower than cords and somewhat lamellate
, sometimes raised into squamose nodules where they cross cords; interstices obliquely quadrate.
5 whorls; initial whorls rounded, becoming more flat-sided with growth; suture narrowly indented; sculpture of spiral cords and lamellate
axial pliculae; first whorl sculptured only by relatively widely spaced axial pliculae (13), second whorl with 16 axial pliculae and 2 developing spiral cords; third whorl with 17 axial pliculae and a third spiral cord developing at shoulder; fourth and fifth whorls with 3 strong spiral cords and 18 and 19 axial pliculae respectively; cords and pliculae subequal in strength, their intersections produced into scale-like nodules, those on shoulder cord somewhat more rounded; suture level with subperipheral cord; cord intervals wider than cords themselves, that between peripheral and subperipheral cord deep.