Brachymeles dalawangdaliri DAVIS, GEHEBER, WATTERS, PENROD, FELLER, ASHFORD, KOURI, NGUYEN, SHAUBERGER, SHEATSLEY, WINFREY, WONG, SANGUILA, BROWN & SILER, 2016
Can you confirm these amateur observations of Brachymeles dalawangdaliri?
Brachymeles dalawangdaliri
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| Higher Taxa | Scincidae, Scincinae, Scincoidea, Sauria, Squamata (lizards) |
| Subspecies | |
| Common Names | E: Tablas Slender Skink |
| Synonym | Brachymeles dalawangdaliri DAVIS, GEHEBER, WATTERS, PENROD, FELLER, ASHFORD, KOURI, NGUYEN, SHAUBERGER, SHEATSLEY, WINFREY, WONG, SANGUILA, BROWN & SILER 2016 Brachymeles bonitae — DUMÉRIL & BIBRON 1839 Brachymeles bonitae — TAYLOR 1917: 276 Brachymeles bonitae — BROWN 1956:5 Brachymeles bonitae — BROWN & RABOR 1967:526 Brachymeles bonitae — BROWN & ALCALA 1970 Brachymeles bonitae — BROWN & ALCALA 1980:20 Brachymeles bonitae — DAVIS et al. 2014 |
| Distribution | Philippines (Romblon Province, Tablas Island) Type locality: Barrio Dubduban, Municipality of San Augustin, Romblon Province, Tablas Island, Philippines (12.58333° N, 122.10000° E; WGS 84; 500–800 ft. elevation. |
| Reproduction | |
| Types | Holotype: CAS 137149, adult male, collected among rotting leaves in early secondary growth forest on 24 May 1972 by L.C. Alcala. Paratypes. Five adult females (CAS 137148, 137150, 137151, 137153, 137154) and one adult male (CAS 137152) were collected in Barrio Dubduban, Municipality of San Augustin, Romblon Province, Tablas Island, Philippines (12.58333° N, 122.10000° E; WGS 84), by L.C. Alcala. CAS 137148 was collected in a rotting coconut trunk on 23 May 1972 (150–250 ft. elev.), CAS 137150–137152 were collected in humus under a rotting log in original forest on 1 June 1972 (450 ft. elev.), and CAS 137153, 137154 were collected in humus under a rotting log in original forest on 2 June 1972 (550 ft. elev.). |
| Diagnosis | Diagnosis: Following recent taxonomic revisions of Brachymeles (Siler et al. 2011; Davis et al. 2014) the new species is assigned to the B. bonitae Complex based on the following suite of morphological characters: (1) limbs present, (2) non-pentadactyl, (3) fore-limbs with 0–3 fingers. (4) hind limbs with 0–2 toes, (5) paravertebral scale rows ≥ 91, (6) presacral vertebrae 47–53, (7) supraoculars four, (8) enlarged, differentiated nuchals present, (9) longitudinal rows of dark spots around the body absent, and (10) auricular opening absent. Brachymeles dalawangdaliri sp. nov. can be distinguished from congeners by the following combination of characters: (1) body size small (SVL 66.0–80.9 mm), (2) fore-limbs bidactyl, (3) hind limbs digitless, unidactyl, or bidactyl, (4) limb length short, (5) supralabials six or seven, (6) infralabials six or seven, (7) supraciliaries five, (8) supraoculars four, (9) midbody scale rows 24 or 25, (10) axilla–groin scale rows 80–83, (11) paravertebral scale rows 97–101, (12) prefrontal contact absent, (13) frontoparietal contact present or absent, (14) enlarged chin shields in two pairs, (15) nuchals enlarged, (16) auricular opening absent, (17) presacral vertebrae 49, and (18) uniform body color (Tables 1, 2). |
| Comment | Habitat: Presumably, Brachymeles dalawangdaliri sp. nov. once occurred in primary growth forest; however, little to no primary forest remains on Tablas Island. Abundance: This species has never been observed in high densities, a pattern consistent with many members of the B. bonitae complex. Furthermore, no recent collections of this species have been made, with the last documented observation of B. dalawangdaliri sp. nov. in the wild occurring more than four decades ago (see also Meiri et al. 2017). Sympatry: B. talinis (Siler & Brown 2010). |
| Etymology | The name of the new species presented in this paper is derived from the Tagalog (Filipino) terms ‘dalawa,’ meaning two, and ‘daliri,’ meaning finger, referencing one of the defining characteristics of the new species, the two digits on the fore-limbs. |
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