Compsophis fatsibe (MERCURIO & ANDREONE, 2005)
Can you confirm these amateur observations of Compsophis fatsibe?
|Higher Taxa||Pseudoxyrhophiidae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)|
|Synonym||Geodipsas fatsibe MERCURIO & ANDREONE 2005|
Compsophis (Geodipsas) fatsibe — GLAW et al. 2007
Compsophis fatsibe — WALLACH et al. 2014: 175
|Distribution||N Madagascar (rainforests of the Anjanaharibe-Sud and Tsaratanana massifs)|
Type locality: western slope of Anjanaharibe-Sud Massif, Valley of Analabe River, 14°46.62’S, 49°26.60’E, 1050 m elevation, Befandriana Fivondronana, Mahajanga Faritany
(Majunga Province), Madagascar.
|Types||Holotype: MRSN R1922, an adult male in good state of preservation, collected on 28 January 1996 by F. Andreone, H. Randriamahazo, and J. E. Randrianirina.|
|Diagnosis||Diagnosis: In terms of pattern of dorsolateral colouration and overall aspect G. fatsibe could be confused with G. laphystia and with G. infralineata. However, G. fatsibe differs from G. infralineata, by having more ventrals (195–198 vs 172–193 in males) and subcaudals (78–82 vs 53–77 in males), smaller body size (620 vs 783 mm maximum known length in males). Geodipsas fatsibe is also distinguished from G. infralineata by having a body laterally more compressed, head more distinct from the neck (1.8 vs 1.3 ratio head width / neck width in specimens of equivalent dimensions), a darker network on the upper side of the head (vs presence only along the interparietal suture), and a comparatively shorter snout (4.7 vs 7.0 mm in specimens of similar size). Remarkable differences lie in the hemipenial ornamentation with the presence on the sulcal side in G. fatsibe of elongate and hooked spines (vs. smaller hooked spines). Geodipsas fatsibe is distinguished from G. laphystia by general lepidosis characters, by having dorsum with a irregular network of dark diagonal stripes (vs. longitudinal fine dark lines), and by characters of hemipenial morphology.|
|Comment||Geodipsas fatsibe n. sp. differs from the other described species of the genus in the following characteristics: 21 rows of dorsal scales at midbody, high number of ventral (198) scales and by the presence of very large hooked spines on the hemipenis. Geodipsas fatsibe is most similar to Geodipsas infralineata. Most likely they are sister species, with a vicariant northern vs. central southern distribution.|
Habitat: fully arboreal (Harrington et al. 2018).
|Etymology||Named after the Malagasy name “fatsibe”, which is composed by two words: “fatsy”, meaning spine, and the suffix “be”, meaning “big” or “large sized”. The specific epithet (pronounced fow-tsee-bay) makes reference to the large hooked spines at the base of the hemipenis. It is used as a noun in apposition.|