Pristiphora phahompoki Smith

Female. Length 5.5 mm. Black; mouthparts brown. Foreleg white with inner surface of femur black. Mid- and hind legs white; femora and apical third or less of hind tibiae black and apical four tarsomeres of hind leg brown to black. Wings hyaline, veins and stigma black. Head smooth and shiny, covered with fine, white pubescence, without noticeable punctures. Antennal length 2.3× head width; 3rd antennomere equal in length to 4th antennomere. Malar space about half diameter of front ocellus. Lower interocular distance 1.2× eye height. Distance between eye and hind ocellus 0.8× distance between hind ocelli. Postocellar area about 2.7× broader than long. Forewing with intercostal crossvein present, basal to vein M; with 3 cubital cells. Pulvilli small, on tarsomeres 1–4. Hind basitarsomere slightly shorter than length of remaining tarsomeres combined. Hind tibial spurs about 0.4× length of hind basitarsomere. Tarsal claws with long inner tooth, slightly more than half length of outer tooth. Sheath broadened at apex, with lateral scopae (similar to Benson 1958, fig. 414). Lancet (Fig. 24) with about 20 serrulae, serrulae flat with very fine subbasal teeth; basal 3 annuli slightly curved, rest straight, each annulus with stout spines more than half width of segments, spines only on upper portion of annuli 1 and 2. Male. Unknown.

Female. Length 5.5 mm. Black; mouthparts brown. Foreleg white with inner surface of femur black. Mid- and hind legs white; femora and apical third or less of hind tibiae black and apical four tarsomeres of hind leg brown to black. Wings hyaline, veins and stigma black. Head smooth and shiny, covered with fine, white pubescence, without noticeable punctures. Antennal length 2.3× head width; 3rd antennomere equal in length to 4th antennomere. Malar space about half diameter of front ocellus. Lower interocular distance 1.2× eye height. Distance between eye and hind ocellus 0.8× distance between hind ocelli. Postocellar area about 2.7× broader than long. Forewing with intercostal crossvein present, basal to vein M; with 3 cubital cells. Pulvilli small, on tarsomeres 1–4. Hind basitarsomere slightly shorter than length of remaining tarsomeres combined. Hind tibial spurs about 0.4× length of hind basitarsomere. Tarsal claws with long inner tooth, slightly more than half length of outer tooth. Sheath broadened at apex, with lateral scopae (similar to Benson 1958, fig. 414). Lancet (Fig. 24) with about 20 serrulae, serrulae flat with very fine subbasal teeth; basal 3 annuli slightly curved, rest straight, each annulus with stout spines more than half width of segments, spines only on upper portion of annuli 1 and 2. Male. Unknown.