Taxonomic review of the planthopper genus Orthopagus (Hemiptera, Fulgoromorpha, Dictyopharidae), with descriptions of two new species Author Song, Zhi-Shun Jiangsu Key Laboratory of Biofunctional Molecules, School of Life Sciences, Chemistry & Chemical Engineering, Ji & angsu Second Normal University, Nanjing 210013, China Author Malenovsky, Igor Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Yezin, Nay Pyi Taw 05282, Myanmar imalenovsky@mzm.cz Author Chen, Jian-Qin Jiangsu Key Laboratory of Biofunctional Molecules, School of Life Sciences, Chemistry & Chemical Engineering, Ji Author Deckert, Juergen Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlarska 2, 611 37 Brno, Czech Republic Author Liang, Ai-Ping Museum fuer Naturkunde, Leibniz Institute for Research on Evolution and Biodiversity Science, Invalidenstrasse 43, Berlin 10115, Germany & Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China liangap@ioz.ac.cn text Zoosystematics and Evolution 2018 2018-08-06 94 2 369 391 http://dx.doi.org/10.3897/zse.94.26859 journal article http://dx.doi.org/10.3897/zse.94.26859 1860-0743-2-369 C354D7DF198F4D4FA2A8F763FD03018D 83D45F0665FE5C729C47210ACD710944 1344764 Orthopagus philippinus Melichar, 1914 Figs 2I-J , 3E , 9A-J Orthopagus philippinus Melichar, 1914: 173, Pl. I, figs 1, 2. Lectotype (here designated) male, Los Banos , Philippines (MMBC, examined). Type material examined. Lectotype male (here designated), (1) Los Banos, P.I. Baker; (2) 1311; (3) Orthopagus philippinus [ Melichar's handwriting] det. Melichar; (4) Collectio Dr. L. Melichar, Moravske museum Brno; (5) Orthopagus male Orthopagus philippinus sp.n., L. Melichar, 1914 [ Lauterer's handwriting], P. Lauterer det. 1991; (6) Syn-typus [red label]; (7) Invent. c . 4954/Ent., Mor. muzeum, Brno; (8) Lectotypus male, Orthopagus philippinus Melichar, 1914, designated by Z. S. Song & I. Malenovsky , 2018 [newly added red label] (MMBC). Paralectotypes, 4 females, same locality labels as holotype but Inv. nos 4949-4951, 4953;1 female, Mt. Makiling, Luzon, Baker (MMBC, Inv. no. 4952, all paralectotypes bearing the following label: Paralectotypus female, Orthopagus philippinus Melichar, 1914, designated by Z. S. Song & I. Malenovsky , 2018). Other material examined. PHILIPPINES : Luzon island : 1 male , Mt. Makiling , Baker leg. (USNM) ; 1 male , Los Banos , 11.xii.1913 , D. T. Fullaway leg. (BPBM) ; 1 male , Los Banos , i.1913 , P. Ledyard leg (LBOB) ; 2 males , Mt. Montalban , Rizal , Wa-wa Dam , 150-200 m , 6. and 17.iii.1965 , H. M. Torrevillas leg. (BPBM) ; 1 male , 4 females , Manila , G. Boettcher leg. (MMBC) ; 1 male , 2 females , "B. M. 1925-491", E. M. Ledyard leg.; 1 female , "Acc. No. 6625, Lot , Bu. of Sci. , P. I.,1908-228", C. S. Banks leg. ; 1 male , "Acc. No. 5364, Lot , Govt. Lab. Coll., 1908-228", C. S. Banks leg. (all BMNH). Redescription. Measurements (4 males, 9 females). Body length (from apex of head to tip of forewings): male 10.6-11.4 mm, female 12.9-13.9 mm; head length (from apex of cephalic process to base of eyes): male 1.25-1.33 mm, female 1.35-1.45 mm; head width (including eyes): male 1.30-1.43 mm, female 1.50-1.60 mm; forewing length: male 8.5-9.1 mm, female 10.3-11.4 mm. Coloration. General coloration as in generic description (Figs 2I-J ). Vertex predominantly dark brown, lateral margins with a pale ochraceous S-shaped streak in posterior three quarters (Fig. 9A ). Frons light ochraceous with small dark brown spots along intermediate and lateral carinae and a large roundish dark brown spot at base (Fig. 9C ). Forewing membrane pattern as in Fig. 3E . Hind wing membrane with a narrow dark brown infuscation along the apical portion of CuA1 vein, not extending along hind wing apical margin. Structure. Head with cephalic process moderately elongate (Figs 9A-B ). Vertex (Fig. 9A ) with ratio of length at midline to width between eyes 1.6-1.8. Transition of vertex to frons blunt, broadly rounded in lateral view, cephalic process thus appearing inflated and bulbous apically (Fig. 9B ). Frons relatively narrow, with ratio of length at midline to maximum width 2.7-3.1. Male genitalia. Pygofer, in lateral view, with dorso-posterior margin produced into a relatively large but narrow, tooth-like, apically obtuse process (Fig. 9E ); in ventral view (Fig. 9F ) much longer than in dorsal view (Fig. 9D ) with ratio of ventral to dorsal width about 2.5. Gonostyles (Fig. 9G ) large, broad medially, with dorsal margin weakly sinuate. Aedeagus (Fig. 9H-J ) with endosomal processes covered with minute superficial spines, extended posteriad and strongly curved laterad and dorso-anteriad but not reaching the base of phallobase; phallobase with one pair of large, strongly inflated dorsolateral lobes, their apex convergent and tapering posteriad (Fig. 9I ), and one pair of smaller, thumb-like ventral lobes, directed ventro-posteriad (Fig. 9I-J ). Segment X, in lateral view, relatively narrow basally, widening to apex beyond middle, apex blunt (Fig. 9E ); in dorsal view, relatively large and broad, widest in apical third, ratio of length to maximum width 1.0-1.1 (Fig. 9D ). Female genitalia as in generic description. Distribution. So far only known from the Luzon island, Philippines. Remarks. Orthopagus philippinus can be easily recognized from other species of the genus by the shape of the head and the presence of a relatively large roundish dark spot at base of frons which is present in all specimens studied. Melichar (1914) indicated that he described this species based on five (male and female) specimens from "Luzon, Los Banos , Mt. Maquiling (C. F. Baker)". Six specimens (1 male, 5 females) preserved in Melichar personal collection in MMBC and labelled as either from Los Banos or Mt. Makiling and collected by Baker are considered here as the original syntypes. The male specimen is designated here as the lectotype for O. philippinus to stabilize the nomenclature according to Article 74 of ICZN (1999) .