Rana attigua Inger, Orlov & Darevsky, 1999

Stuart Ko Sok Thy Neang, Bryan L., 2006, A Collection Of Amphibians And Reptiles From Hilly Eastern Cambodia, Raffles Bulletin of Zoology 54 (1), pp. 129-155 : 139-140

Rana attigua Inger, Orlov & Darevsky

Material examined. – Pichrada : FMNH 261920-22 , Phnom Nam Lyr Mountain, evergreen mixed with deciduous and bamboo, near 12°32'16"N 107°32'00"E, 600-700 m elev., 21 Jun.2000 ; FMNH 261923 , gallery evergreen forest along stream, near 12°29'49"N 107°29'33"E, 700 m elev., 22 Jun.2000 .

Remarks. – Four males with nuptial pads (SVL 34.0 – 36.6, mean ± SD 35.5 ± 1.3, N = 4) agree with the original description ( Inger et al., 1999) and the FMNH type series from Gia Lai Province, Vietnam, except the Cambodian males are slightly smaller than males with nuptial pads in the type series (SVL 36.2 – 45.5, mean ± SE 41.3 ± 0.3, N = 43; Inger et al., 1999), and the nuptial pads have a distinct notch in the ventral margin. These discrepancies are noteworthy because two of the characteristics used by Inger et al. (1999) to distinguish R. attigua from the similar, co-occurring R. milleti Smith, 1921 , at the type locality in Vietnam were body size and condition of the nuptial pad. Specifically, Inger et al. (1999) reported that R. milleti males with nuptial pads have SVL 34.2 – 40.4 (mean ± SE 37.0 ± 0.2, N = 52), but only four of 43 male R. attigua were less than 39.0, and the nuptial pad in R. milleti has a distinct notch or constriction in the ventral margin, but that of R. attigua is straight. We reexamined specimens assigned to R. milleti (FMNH 253425- 86) by Inger et al. (1999), and only about half of the adult males have a notch or constriction in the ventral margin of the nuptial pad, rendering this character to be non-diagnostic. The most conspicuous differences in preservative between R. attigua and R. milleti are those of colouration, as stated by Inger et al. (1999): the underside of the thigh is immaculate whitish and the underside of the calf is immaculate or with only faint dark speckling in R. attigua , but the underside of the thigh has dark speckling and the underside of the calf has dark spotting in R. milleti ; and the rear of the thigh has only a light dusting of dark pigment in R. attigua , but the rear of the thigh has a distinct pattern of dark brown forming a network around small light spots or blotches in R. milleti .

Three were taken in a flooded grassy clearing in the forest, and one was on leaf litter 2 m from a small stream.

This is the first report of the species from Cambodia. The similar R. milleti was recently reported from southwestern Cambodia ( Chuaynkern et al., 2004).