(Fig. 42, 43, 99, 164, 165, 239, 282, 332, 425-427)
Etymology. Dedicated to our colleague, Dr. Nobuo Ohbayashi, of Japan, who has extensively published on Cerambycidae, and provided important specimens for this study.
Type material. Holotype M, PHILIPPINES, Davao Region, Mindanao, Davao del Sur: Mount Apo, X. 04.1976, T. Endo coll. (EELE). Paratypes (2 M, 1 F), as follows: PHILIPPINES, Davao Region, Mindanao, Bukidnon: Impasug-ong, M, X.19.2002 (ECCO); Lantapan, F, XII.17.2001 (ECCO); Davao del Sur: Mount Apo, M, IX.4.1976, T. Endo coll. (KMCT).
Description. Integument shining, dark-brown; parts of head and of mandibles, pronotal margins, epipleura and elytral suture blackish.
Male (Fig. 425). Dorsal surface of head, on gibbosities, moderately coarsely and abundantly punctate; area between gibbosities and occiput coarsely, sparsely punctate; area between gibbosities and ocular carina barely depressed and finely, very sparsely punctate; area close to posterior ocular edge coarsely, abundantly punctate (punctures not confluent); area behind eyes coarsely, abundantly punctate (in part confluent); ocular carina elevated, not bifurcated in “Y” near posterior edge of eyes (Fig. 425). Eyes narrow (Fig. 99); posterior ocular edge (Fig. 425) very distinct. Central area of clypeus vertical close to front. Central projection of labrum (Fig. 42) narrow and rounded at apex. Submentum barely depressed; punctation coarse, well marked, abundant and in part confluent (mainly close to anterior margin); pilosity moderately long, sparse (longer and more concentrated at central area close to anterior margin); anterior margin wide and just elevated only at lateral. Mandibles just shorter than head; teeth of inner margin (Fig. 164) placed a little after middle. Ventral sensorial area of antennomeres III-XI divided by carina, well marked, not visible from side (Fig. 239).
Pronotum finely, sparsely punctate at disc; area close to anterior angles with punctures coarse and abundant, gradually more oblong and with edge toward outer side of pronotum elevated (these punctures not reaching margin and anterior angles); punctation of middle and posterior lateral area coarse and sparse; anterior angles not projected forward, but well marked and in an almost straight angle; lateral angles just indicated; posterior angles well marked; anterior edge (Fig. 425) barely sinuous. Elytra coarsely, abundantly punctate (punctures finer at apical third); each elytron with a single carina barely marked. Metasternum with punctures slightly coarse, sparse (finer and sparser towards metasternal suture). Metafemur (Fig. 426) moderately elongated. Dorsal surface of the tibiae flat at apical half; in dorsal view distinctly wide. Metatarsomere V (without claws) longer than I-III together (Fig. 282). Paronychium with two setae.
Female (Fig. 427). Head narrow; dorsal face coarsely and abundantly punctate throughout, except on gibbosities where punctures are finer. Central projection of labrum (Fig. 43) narrow and acute at apex. Mandibles (Fig. 165). Distribution of punctures of pronotum as in male, but somewhat finer close to anterior angles; anterior angles distinctly projected forward; anterior edge sinuous. Antennae reaching basal fourth of prothorax.
Variability. Integument brown to dark-brown. Male: mandibles as long as head; anterior angles slightly projected forward; each elytron with two visible carinae; dorsal face of tibiae rounded at apical half; paronychium with one seta in some tarsi.
Dimensions in mm (M / F). Total length (including mandibles), 18.3-21.3/20.1; prothorax: length, 3.9- 4.7/4.0; anterior width, 4.9-5.8/4.8; posterior width, 3.9-4.7/4.6; humeral width, 4.8-5.6/5.7; elytral length, 10.5-12.4/12.6.
Comments. Komiyandra ohbayashii is similar to K. nayani, but differs by the: anterior edge of labrum of male almost straight (Fig. 42) at sides of the central projection; elytral punctures coarser and sparser; sensorial ventral area of antennomeres III-XI with coarser and more distinct carina. In K. nayani, the anterior edge of labrum of male (Fig. 40) is rounded at sides of the central projection, the elytral punctation is finer and more abundant, and the carina of the sensorial ventral area of the antennomeres III-XI, when present, is finer and less distinct, mainly at basal antennomeres. Differs from K. luzonica by the elytral punctation coarser and more abundant, and by the lateral area of the pronotum, close to the anterior angles, without abundant callosities. In K. luzonica, the elytral punctation is clearly finer and sparser, and the lateral area of the pronotum, close to the anterior angles, has distinct callosities.