Calamaria prakkei LIDTH DE JEUDE, 1893
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|Higher Taxa||Colubridae, Calamariinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)|
|Common Names||E: Prakke’s Reed Snake|
G: Prakkes Riednatter
|Synonym||Calamaria prakkei LIDTH DE JEUDE 1893|
Calamaria prakkei — INGER & MARX 1965: 120
Calamaria prakkei — GRANDISON 1978: 286
Calamaria prakkei — INGER & VORIS 2001
Calamaria prakkei — WALLACH et al. 2014: 141
|Distribution||Singapore I, Malaysia (Sabah, Borneo)|
Type locality: Sandakan Bay, North Borneo.
|Types||Lectotype: RMNH RENA 10866 (previously RMNH.RENa.4360), male; paratype: RMNH RENA.4360. Collected by J.Chr. Prakke, Indonesia, Borneo, Sandakan Bay.|
|Diagnosis||Diagnosis. Maxillary teeth modified; third and fourth supra-labials entering orbit; preocular present; mental touching anterior chin shields; paraparietal surrounded by 5 shields and scales; sub-caudals of males 30 or more, of females 24 or more; ventrals fewer than 145 (Inger & Marx 1965).|
Description. Rostral as wide as high, portion visible from above 1/2 to 2/3 length of prefrontal suture; prefrontal 3/4 length of frontal, touching first 2 supralabials; frontal hexagonal, 1.5 to 2.33 times width of supraocular, about 4/5 lengt of parietal; parietal 1.66 times length of prefrontal; paraparietal surrounded by 5 scales and shields; nasal subequal to postocular; preocular present; neither ocular as high as eye; eye greater than eye-mouth distance; 5 supra-labials, third and fourth entering orbit, fifth the largest, other 4 subequal; mental triangular, touching anterior chin shields; 5 infra-labials, first 3 touching anterior chin shields; both pairs of chin shields meeting in midline; 3 gulars in midline between posterior chin shields and first ventral (Inger & Marx 1965).
Body thickness index 0.020-0.027 (2 specimens); tail long and thick, tapering near end to sharp point; dorsal scales reduce to 4 rows on tail opposite seventh to fifteenth subcaudal anterior to terminal scute (Inger & Marx 1965).
Hemipenis forked opposite the twelfth subcaudal, retractor beginning opposite fourteenth subcaudal; calyces papillate distally (1 specimen) (Inger & Marx 1965).
Teeth: Seven to eight modified maxillary teeth (6 specimens) (Inger & Marx 1965).
Scale counts: ventrals: males, 126-132 (mean 128.6; N=5); females, 142-144 (N=2). Subcaudals: males, 31-32 (mean 31.4; N=5); females, 24-25 (N=2) (Inger & Marx 1965).
Total length: males, 172-245 mm.; females, 230-256 mm. Ratio of tail to total length: males, 0.165-0.167 (mean 0.166; N=3); females, 0.096-0.105 (N=2) (Inger & Marx 1965).
Coloration: brown above, each dorsal scale above first row with a dark network; scattered mid-dorsal scales with a dark central spot, spots not forming longitudinal stripes; scales of first row yellow in centers forming a distinct longitudinal light stripe running length of body; adjacent edges of ventrals and first scale row dark brown forming a dark stripe; a similar stripe formed along adjacent halves of first and second scale rows; in anterior sixth of body a dark stripe formed on adjacent edges of second and third rows; light brown collar about 6 scales behind parietal, collar complete or interrupted mid-dorsally; head brown above with darker spots; lower half or third of supra-labials yellow, sutures brown; head yellow below with brown spots on sutures; ventrals yellow, immaculate except for brown lateral edges; underside of tail yellow, usually a midventral dark stripe (Inger & Marx 1965).
|Etymology||named after Mr. J. Chr. Prakke who captured the type in the neighbourhood of the Sandakan-bay (N. Borneo).|
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