Prasinohaema parkeri (SMITH, 1937)
Can you confirm these amateur observations of Prasinohaema parkeri?
|Higher Taxa||Scincidae, Sphenomorphinae, Scincoidea, Sauria, Squamata (lizards)|
|Common Names||E: Parker's Green Tree Skink|
|Synonym||Lygosoma parkeri SMITH 1937: 234|
Prasinohaema parkeri — GREER 1974: 12
Prasinohaema parkeri — SLAVENKO et al. 2021 (incertae sedis)
|Distribution||Papua New Guinea|
Type locality: Utakwa River, Dutch New Guinea.
|Types||Holotype: BMNH 19188.8.131.52 (formerly 19184.108.40.206)|
|Comment||Listed as “Prasinohaema parkeri SMITH 1849” in FRANK & RAMUS 1995.|
Abundance: only known from the type specimen (Meiri et al. 2017).
Synonymy: Prasinohaema parkeri (Smith, 1937) was originally placed in Prasinohaema by Greer (1974), seemingly based on having basally enlarged subdigital lamellae and transverse cross-bands on the dorsum, a coloration pattern it shares with Pr. prehensicauda and Pr. flavipes, but also with Pr. semoni which is phylogenetically distant from the former two species. However, no information was given in Smith (1937) regarding the condition of its tail or the colour of its blood serum or tissues, data for the latter of which would not have been available for Greer in his revision (Greer, 1974) since the species was never collected after its original description. Furthermore, Pr. parkeri lacks lobules on the anterior edge of the ear opening and has a unique arrangement of the frontal (contacting the three vs. two anteriormost supraoculars) and prefrontals (fused with the anterior loreals). Pr. parkeri is only known from its type specimen (Meiri et al., 2018) collected in the Utakwa River (Smith, 1937), presumably along the southern slopes of the Sudirman Range (Wollaston, 1914). Although the presence of basally expanded subdigital lamellae and cross-bands may suggest an affinity with Pr. prehensicauda and Pr. flavipes, these traits are also common in at least some other New Guinean skinks (e.g. basally expanded subdigital lamellae in Li. longiceps, cross-bands and basally expanded subdigital lamellae in Pr. semoni), and therefore its placement in Prasinohaema is uncertain. Similarly, the presence of green blood serum and tissues alone would not be enough to place it in Prasinohaema, as both Pr. semoni and Pr. virens possess this trait but are otherwise morphologically and phylogenetically distant from Pr. prehensicada and Pr. flavipes (Slavenko et al. 2021).