Taxonomic review of the plant bug subfamily Isometopinae for Taiwan and Japanese Southwest Islands, with descriptions of new taxa (Hemiptera: Heteroptera: Miridae: Isometopinae) Author Yasunaga, Tomohide Author Yamada, Kazutaka Author Tsai, Jing-Fu text Zootaxa 2017 2017-12-20 4365 4 421 439 journal article 31122 10.11646/zootaxa.4365.4.3 a160aa62-40a2-4492-8590-1254f66880b6 1175-5326 1119207 A1C0F6C5-EDAF-40D2-8B0F-FA79C8ACD4BF Alcecoris cochlearatus sp. nov. ( Figs. 3E–J , 8 ) Diagnosis. Distinguished readily from any known congener by its orange-brown basic coloration ( Fig. 3E ); two apical branches on antennal segment I and typically spoon-shaped antennal segment II ( Figs 3H , 8 ); shiny, highly polished pronotum; sharply pointed scutellum with a bundle of stiff setae ( Figs 3J , 8D ); shiny black callosity apically on corium; and white base of cuneus. FIGURE 10. Final (fifth) immature form of Astroscopometops grillocephalus (Miyamoto, Yasunaga & Hayashi) ( A–D ), Myiomma sp. (either minutum or samuelsoni ) ( E–G ), and Kohnometopus fraxini Yasunaga ( H ). A, E, F & H , Dorsal habitus; B , head with pro-ocular horn (left); C, pronotal projections (right); D & G , surface structure and vestiture on mesonotum. Description. Holotype female ( Fig. 3E–J , 8 ): Body generally shiny orange-brown, with fuscous corium, forewing membrane and abdomen; dorsal surface with sparsely distributed, simple, semierect setae. Head shiny orange-brown, narrowly pale along caudal margins of compound eyes, higher than wide in frontal view; compound eyes strongly protrusive dorsad, slightly separated at midline, occupying dorsal 1/4 of head. Antenna orangebrown; segment I polished, with two apical branches; segment II highly polished, conspicuous, spoon-shaped or paraboloid, caudally (or dorsally) concave; segments III and IV filiform. Labium shiny dark brown, reaching abdominal sternum IV; segment I and basal 2/3 of segment II orange-brown. Pronotum polished, impunctate, with distinctly carinate lateral margin; scutellum conically projected, with a bundle of stiff setae at apex; pleura generally shiny brown, with light brown scent efferent system. Hemelytron shiny dark brown, shallowly and roughly punctate, with lateral margin pale brown, semitransparent; clavus and anterior part of corium speckled with pale spots; apical part of corium with a shiny, fuscous callosity; cuneus with white basal half, black apical half and pale brown lateral margin; membrane including veins wholly fuscous, opaque. Coxae and legs pale creamy brown; legs long; distal 2/3 of meso- and metafemora as well as proximal 1/2 and extreme apices of meso- and metatibiae coffee brown; all tarsi smoky brown. Abdomen uniformly shiny fuscous. Genitalia not examined. Measurements. Holotype female : Body length 2.70; head width across eyes 0.53; head height 0.75; lengths of antennal segments I–IV: 0.33, 0.90, 0.30, 0.45; maximum width of antennal segment II 0.57; mesal pronotal length 0.50; basal pronotal width 0.78; width across hemelytra 1.05; lengths of metafemur 1.05, tibia 1.65 and tarsus 0.41. Distribution. Peninsular Malaysia (central highlands). Biology. Unknown. Etymology. From Latin, cochlear [= spoon, cup] + atus [suffix of possession], referring to the distinctly spoonlike antennal segment II of this new species; an adjective. Holotype : ♀ , MALAYSIA : Pahan, Cameron Highlands, SE of Ringret, Gunung [Mt.] Berembun, 4.35N , 101.45E , 26 Nov 1992 , K. Matsumoto ( AMNH _PBI 00380583) ( TKPM ).