Tropidonophis statisticus MALNATE & UNDERWOOD, 1988
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Tropidonophis statisticus
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| Higher Taxa | Colubridae (Natricinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | |
| Common Names | E: PNG montane keelback |
| Synonym | Tropidonophis statisticus MALNATE & UNDERWOOD 1988: 155 Styporhynchus montanus MCDOWELL 1984: 18 Tropidonophis statistictus — PYRON & BURBRINK 2013 Tropidonophis statisticus — WALLACH et al. 2014: 751 Tropidonophis cf. statisticus — CLEGG & JOCQUE 2016 Tropidonophis statisticus — ROBERTS et al. 2024 |
| Distribution | New Guinea (Orumba, Eastern Highlands Province), Indonesia (NE/SE Irian Jaya) Type locality: Orumba, Eastern Highlands Province, Papua New Guinea. |
| Reproduction | oviparous |
| Types | Holotype: MCZ 142422, male |
| Diagnosis | Diagnosis. Tropidonophis statisticus is distinguished from all New Guinea Tropidonophis except elongatus and montanus by a high ventral count (>150). From elongatus the species is differentiated by a shorter tail (24% of the total length vs 29%) and fewer subcaudals (rarely more than 85, always 85 or more in elongatus). Differentiation from parkeri is defined under that species. Tropidonophis statisticus may be distinguished from montanus by the following combination of characters: (1) infralabials commonly nine (eight in montanus); (2) rare occurrence of contact between the upper postocular and the anterior temporals (9.7% of the counts vs 73.8%); (3) usually only a single anterior temporal (63.4% vs 33.5%); (4) lower level of development of subcaudal pits (means: 35.8% male, 26.4% female of the subcaudals vs 89.6 male, 80.6% female); (5) shorter length of >8 scale rows on the tail (means: 11.9 sc vs 15.3 sc male, 6.1 vs 8.0 female) and eight rows (15.5 vs 18.0 male, 16.6 vs 18.7 female). In addition, statisticus tends to have: fewer subcaudals and, thus, lower sc/v + sc values (Table 22); a somewhat more posterior reduction to 15 dorsal scale rows (Table 2); contact between the lower postocular and the anterior temporals nearly always present (Table 23). (Malnate & Underwood 1988: 155) Unfortunately we had to temporarily remove additional information as this was scraped by multiple AI companies who sell that data to their customers. These details, e.g. detailed descriptions or comparisons (about 10353 characters) are available for collaborators and contributors. Please contact us for details. |
| Comment | Distribution: see map in MALNATE & UNDERWOOD 1988: 154 (Fig. 26) |
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