Emoia caeruleocauda (de Vis, 1892)
There are three species in the genus Emoia recognized to occur in the Philippines. One of these species, E. ruficauda, is recognized to be endemic to the island of Mindanao in the southern Philippines. The two other species, E. atrocostata and E. caeruleocauda, are considered widely distributed species complexes (Brown and Alcala, 1980). These two species likely include multiple, unique evolutionary lineages in need of recognition.
Species of Emoia are often observed around streams and bodies of water, with some species commonly found in mangrove swamps or coastal habitat (E. atrocostata) and other species observed in grass-dominated habitat near rivers (Emoia ruficauda) or rocky habitat near the coast (E. caeruleocauda) (Brown and Alcala, 1980).
Of the three species found in the Philippines, only E. atrocostata is considered a moderate-sized species, with E. ruficauda and E. caeruleocauda possessing smaller body sizes.
For more detailed description of color (often from preserved specimens), see Brown and Alcala (1980).
(Coloration in preservative; Brown and Alcala, 1980)
Dorsal Coloration: dark brown, 3 narrow, light bluish to bluish-while stripes
Ventral Coloration: dirty gray or bluish-ivory
This species can be distinguished from congeners by the following combination of characters: (1) Snout-vent length at maturity less than 60 mm; (2) midbody scale rows 30-32; (3) 54-60 scale rows between parietals and base of tail; (4) 4th toe lamellae 37-44 (rounded); (5) interparietal fuesd with frontoparietals; (6) dorsal color pattern marked by narrow, light longitudinal stripes; and (7) tail bluish. (Brown and Alcala, 1980)
SVL 39.8-50.6 mm (Brown and Alcala, 1980)
Ecology and Distribution
Sudest Island (= Tagula Island) off eastern coast of New Guinea; repository of type not known.
In the Philippines, this species has been recorded from the small island of Comiran, between Palawan Island and Borneo, the small island of Tulian near Jolo Island in the Sulu Archipelago of the Philippines, and the Zamboanga Peninsula of Mindanao Island in the southern Philippines. However, Brown and Alcala (1980) stated that the identification of the Zamboanga population was tentative and was possibly in error.
In the Philippines, this species is associated with small islands between Borneo and the Palawan and Mindanao Pleistocene Aggregate Island Complexes (PAIC; Brown and Diesmos, 2002). It is tentatively recognized from the far western portion of the Mindanao PAIC; however, this population has not been closely examined to confirm its identity as E. caeruleocauda (Brown and Alcala, 1980).
The population from Tulian Island has been observed on rocky outcrops near the coast (Taylor, 1922; Brown and Alcala, 1980).
- Mocoa caeruleocauda De Vis, 1892 (synonym)
- Lygosoma cyanurum werneri Vogt, 1912 (synonym)
- Lygosoma werneri triviale Schüz, 1929 (synonym)
- Emoia triviale Schmidt, 1932:186 (synonym)
- Lygosoma (Emoa) werneri Angel, 1935: 55 (synonym)
- Emoia werneri Smith, 1937:227 (synonym)
- Emoia werneri Dryden & Taylor, 1969 (synonym)
- Emoia caeruleocauda Greer, 1974:20 (synonym)
- Emoia werneri Greer, 1974 (synonym)
- Emoia werneri Medway & Marshall, 1975 (synonym)
- Emoia caeruleocauda Brown & Alcala, 1980:72 (synonym)
- Emoia caeruleocauda Mys, 1988:132 (synonym)
- Emoia caeruleocauda Adler, Austin & Dudley, 1995 (synonym)
- Emoia caeruleocauda Whiting, et al. 2003 (synonym)