Pilophorus tenni Yasunaga & Ito 2026, sp. nov.

Pilophorus tenni Yasunaga & Ito, sp. nov. Figs. 2E–G, 2C–D, 3D, 8A–L Material examined. Holotype (♂). TAIWAN: Nantou Hsien, Ren-ai Township, Huisun Forest Protection Area, Guandao Mountain Forest Road, N24.085 E121.032, 11 Jul 2023, local collector (NMNS) (AMNH _ PBI 00378831). Diagnosis. Currently known by a single male holotype specimen. Readily recognized by its small size among ‘strikingly antlike’ members of Pilophorus (sensu Yasunaga & Schuh 2013); generally coffee-brown coloration; head wider than height in frontal view; comparatively small eye; sparsely distributed upright setae on vertex and frons; relatively long and clavate antennal segments II that is longer than maximum width; uniformly distributed, wooly, reclining setae on pronotum; short neck-like construction of pronotum; and C-shaped vesica with short, slender median process (Figs. 3D, 8J, L). Based on similar shape of the male vesica, this new species is most closely related to P. palawanus (Schuh, 1984) known from Sundaland (Palawan Island, Philippines and Singapore); P. tenni sp. nov. can be distinguished from P. palawanus in having the smaller size, wider head that is wider than height, sparsely distributed setae on the vertex and frons, creamy white basal 2/3 of the antennomere III, weakly constricted hemelytra, and shorter and narrower vesical median process. Description. Male: Body small within ‘strikingly antlike’ congeners (see discussion below); general coloration coffee brown; dorsal surface weakly shining, without noticeable macula, with sparsely distributed, simple setae (possibly dorsal vestiture partly rubbed off in a single available specimen). Head uniformly dark brown, wider than height; vertex and frons with rather sparsely distributed, simple, dark upright setae; vertex relatively wide, narrowly carinate basally. Antenna dark brown; segment I pale brown, slightly darkened apically; segment II moderately clavate, with segment II slightly paler basal 1/4; basal 2/3 of segment III creamy white; segment IV missing. Labium dark brown, slender, reaching median part of mesocoxa; segment I and basal half of II pale reddish brown. Pronotum coffee brown, rather matte, strongly constricted medially, with uniformly distributed, wooly, reclining setae; scutellum fuscous, somewhat arched, without scale-like setae; pleura shiny dark brown; mesepimeron with clustered scale-like setae along dorsal margin (Fig. 4B); metathoracic scent efferent system as in Fig. 4C, with semi-circular peritreme. Hemelytra coffee brown, shining, weakly constricted (HCR = 0.79), declivous at cuneal fracture, with sparse vestiture; clavus and anterior corium matte; posterior part of corium with simple, reclining setae; anterior 1/3 of exocorium with sparsely distributed, silvery, scale-like setae (Fig. 4B); membrane pale smoky brown. Coxae creamy yellow; apical half of procoxa and basal 1/3 of mesocoxa reddish brown; legs chestnut brown; metatibia longer than exocorium; pretarsal structures as in Fig. 4E; parempodia relatively short. Abdomen shiny dark brown, without silvery scale-like setae. Male genitalia (Figs. 3D, 8F–L): Right paramere short, blunt-tipped (Fig. 8I); vesica C-shaped, with short, narrow median process (Figs. 3D, 8J, L) and sharp, sword-like apical part (Fig. 8K). Female: Unknown. Measurements. See Table 1. Etymology. Named after Tēnn Sîng-Kong (Zheng Cheng-Gong in Chinese) (1624–1662), one of the most popular historical heroes in Taiwan and known internationally by his honorific title Koxinga; a noun in genitive case. Biology. No information is currently available.