Kalophrynus yongi Matsui, 2009

Zug, George R., 2015, Morphology and Systematics of Kalophrynus interlineatus-pleurostigma Populations (Anura: Microhylidae: Kalophryninae) and a Taxonomy of the Genus Kalophrynus Tschudi, Asian Sticky Frogs, Proceedings of the California Academy of Sciences 62 (5), pp. 135-190 : 181-182

Kalophrynus yongi Matsui, 2009 Cameroon Highland Sticky Frog

Kalophrynus yongi Matsui, 2009 , Zoological Science 26:580 [Type locality “near the top of Gunung Brinchang, 04°51′N, 101°38′E, 1954 m a.s.l., Cameron Highlands , Pahang, Peninsular Malaysia ”].

TYPE MATERIAL.— HOLOTYPE: Kyoto University Humanities and Environment 15531 . PARATYPES: KUHE 566 , 52446 . All by original designation .

DEFINITION.— Small to medium-sized, adult males 28.8–31.0 mm SVL (n = 3); head moderate length 29 % HeadL/ SVL; head wider than long 32–33 % HeadW/ SVL; snout moderately broad 7–8 % SnW/ SVL; naris closer to snout than to eye 4–5 % SnNar/ SVL; eye moderately large 13–14 % EyeD/ SVL; tympanum visible and smaller than eye 8–9 % Tymp/ SVL; moderately long and stout forelimb 65–67 % Foreleg/ SVL and forearm equal crus length NA % Forarm/CrusL; hindlimb moderately long 135–148 % HndlL/ SVL, 38–43 % CrusL/ SVL, and NA % CrusL/ThghL; hindfoot well developed 43–47 % HndfL/ SVL.

Vomerine teeth presence or absence not reported; palatal fold morphology not reported; tongue elongate with rounded tip.

Fingers with slight basal web; lengths 3>2>1>4; tips rounded and not dilated; subarticular tubercles large, round, and one on digits 1, 4, two on 2, and three on 3; fleshy outer palmar tubercle and no inner one; nuptial pad with conical tubercles present; weakly developed but externally protruding spine on proximal end of humerus. Toes with weak basal webbing, lengths 4>3≈5>2>1; tips rounded; subarticular tubercles large, round and one on digits 1, 2, two on 3, 5, and three on 4; prominent round inner and indistinct round outer metatarsal tubercles.

In life, dorsum changes from light orangish brown to dark brown; in lighter phase, ill-defined darker stripe from tip of snout to transverse interorbital bar, obscure shoulder chevrons and transverse bars on trunk; black spot in inguina without light border; laterally from loris to inguina darker than dorsum and demarcated from latter by a narrow darker dorsolateral stripe; dusky cream venter with darker throat and scattering of small spots on limbs.

ETYMOLOGY.— This species was named to honor Dr. Yong Hoi-Sen of the University of Malaya for his contributions to Malaysian zoology.

DISTRIBUTION.— Presently this species is known from only from the vicinity of the type locality on Gunung Brinchang , Cameron Highlands, Malaysia .

NATURAL HISTORY.— Eggs and larvae occurred on the internal walls of large pitcher plants. Males called from the inside of the pitchers as well. The pitcher plants and frogs live in the dense moss forests on the mountain side.

COMMENTS.— Preceding information extracted from Matsui (2009).