Pilophorus nakatanii Yasunaga & Duwal, n. sp.
Creators: name: Yasunaga, Tomohide
name: Duwal, Ram Keshari
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Miridae
Pilophorus
Pilophorus nakatanii

description: Pilophorus nakatanii Yasunaga & Duwal, n. sp.
(Figs. 1 A–B, 2, 3)
Pilophorus formosanus: Miyamoto & Yasunaga, 1989: 163 (list); Yasunaga, 2001: 250, pl. 91 (diag.) [nec Poppius, 1914: 238].
Diagnosis. Recognized by its moderate size; fuscous brown basic coloration; less shining pronotum; very sparse scalelike setae on scutellum; chestnut brown, matt anterior 2/3 of hemelytron; two streaks of scalelike setae on corium (a band on anterior corium not continuing to clavus and the other posterior band confluent); and distinctive shape of endosoma. Most similar to P. niger Poppius, based on dorsal color (surface) and vestiture patterns; easily distinguished by apparently smaller size, chestnut anterior corium and clavus, and different form of endosoma.
Description. Body generally dark brown, rather small, weakly to moderately constricted (HCR = 0.82–0.88); dorsal surface weakly shining (except for polished posterior 1/3 of hemelytron), with sparsely distributed, simple, brown setae. Head shiny fuscous, triangular. Antenna dark brown, except for wholly creamy white segment III; segment II weakly clavate. Labium shiny reddish brown, reaching apex of metacoxa. Pronotum fuscous, weakly shining, narrow; mesoscutum shiny fuscous; scutellum fuscous, weakly shining, with very sparsely distributed scalelike setae; ostiolar peritreme grayish brown. Hemelytron nearly two-tone colored, with chestnut brown, matte anterior 2/3 and shiny fuscous, posterior 1/3, each demarcated by a confluent band of scalelike setae (Fig. 1 A); anterior 1/3 of corium with the other band of scalelike setae that is not continuous to clavus; cuneus with sparsely distributed, scalelike setae along anterior margin; membrane dark grayish brown. Coxa and leg dark brown; median part of procoxa, and apices of shagreened meso- and metacoxa brown; metafemur weakly curved; each tarsus yellowish brown, with darkened apex. Abdomen shiny fuscous; proximal 1/3 of ventral surface with a band of scalelike setae laterally. Male genitalia (Figs. 2, 3): Genital segment (pygophore) rather broad; phallotheca with sharpened apex. Left paramere with a moderate-sized dorsal protuberance. Endosoma C-shaped, medially with a long, straight, saber-like, basally bifurcate process.
Measurements. ♂/♀: Total body length 3.2−3.3/ 3.6; length from apex of clypeus to cuneal fracture 2.47−2.66/ 2.77; width of head across eyes 0.92−0.95/ 0.95; head height 0.75−0.76/ 0.80; width of vertex 0.42−0.44/ 0.48; lengths of antennal segments I −IV 0.32−0.35, 1.20−1.27, 0.39−0.40, 0.48−0.53/ 0.34, 1.33,?,?; basal width of pronotum 0.31; minimum width across hemelytron 1.14; maximum width across hemelytron 1.33;; and length of metafemur, tibia and tarsus 1.23−1.27, 1.89−1.91, 0.39−0.43/ 1.33, 2.09,? (antennal segments III and IV, and metatarsus missing in available female specimen).
Etymology. Named to honor Dr. Yukinobu Nakatani (National Institute of Agro-Environmental Sciences, Tsukuba, Japan), who is enthusiastically working on the Asian deraeocorine and pilophorine faunas.
Biology. Although two individuals of this new species were found on Okinawa-pine, Pinus luchuensis Mayr (Pinaceae), its breeding host is yet to be confirmed. Collection records suggest P. nakatanii has a bivoltine life cycle.
Holotype: ♂, JAPAN: Ryukyus: Iriomote Island, Uehara, light trap, 6 Jun 2013, T. Yasunaga, M. Takai & T. Ishikawa (AMNH _PBI 00380410) (AMNH).
Paratypes. Ryukyus: Okinawa Island, Kunigami Village, Yona, on Pinus luchuensis Mayr, 20−24 May 1993, T. Yasunaga, 1♂ (TYCN); Ishigaki Island, Mt. Bansei (Maese), P. luchuensis, 30 Sep 2002, T. Yasunaga, 1♀ (TYCN).
description: Published as part of Yasunaga, Tomohide & Duwal, Ram Keshari, 2016, Three new species of the ant-mimetic plant bug genus Pilophorus from Japan (Hemiptera: Heteroptera: Miridae: Phylinae: Pilophorini), pp. 172-182 in Zootaxa 4117 (2) on pages 175-179, DOI: 10.11646/zootaxa.4117.2.2, http://zenodo.org/record/262872