簡介:"體呈梭狀,雌性體長約151μm, 雄性體長約123μm,硬皮板呈五角形,在側邊及後側邊各具有凸起,在二背毛瘤間隆起,硬皮板網紋中線缺乏,臨中線完整,在基部1/5及4/5處凸出,在基部3/5處有一橫線,背毛瘤在硬皮板後沿之前,背毛向上及外伸,背毛長度分長型及短型二類,足部節正常,足毛正常,基部區域光滑,,羽爪為複形,具六裂,後體部背板有一中央脊起延至體末端,背環節上有刺狀微瘤,腹毛完整,性蓋具有約十一條縱脊,棲息於臺灣櫧(Castanopsis formosana)葉背上,無明顯為害症狀,分佈於臺灣。Body spindle shaped, female 151μm long, male 123μm long, shield pentagonal, with projections at lateral and posterolateral area, bulge between scapular tubercles, shield design with median absent, admedian lines complete, convex at basal 1/5 and 4/5, with transverse line at basal 3/5, scapular tubercles set ahead of rear shield margin, setae directed upward and diverging, setae divided into long type and short type, leg segments normal, coxal area smooth, empodium diviided, 6 rayed. Opisthosoma dorsum with median ridge extending towards rear, with spiny microtubercles, ventral setae normal, coverflap with about 11 longitudinal ridges. Infesting on lower surface of Castanopsis formosana, no apparent damage was observed. Distribution at Taiwan."