Orthopagus hainanensis Song, Chen & Liang, 2018

Song, Zhi-Shun, Malenovsky, Igor, Chen, Jian-Qin, Deckert, Juergen & Liang, Ai-Ping, 2018, Taxonomic review of the planthopper genus Orthopagus (Hemiptera, Fulgoromorpha, Dictyopharidae), with descriptions of two new species, Zoosystematics and Evolution 94 (2), pp. 369-391 : 373-374

publication ID	https://dx.doi.org/10.3897/zse.94.26859
publication LSID	lsid:zoobank.org:pub:C354D7DF-198F-4D4F-A2A8-F763FD03018D
persistent identifier	https://treatment.plazi.org/id/3809F64E-8BDD-47F3-83B8-97FEAB5692C4
taxon LSID	lsid:zoobank.org:act:3809F64E-8BDD-47F3-83B8-97FEAB5692C4
treatment provided by	Zoosystematics and Evolution by Pensoft
scientific name	Orthopagus hainanensis Song, Chen & Liang
status	sp. n.

Treatment

Orthopagus hainanensis Song, Chen & Liang sp. n. Figs 2E-F View Figure 2 , 3C View Figure 3 , 6A-I View Figure 6 , 7A-G View Figure 7

Type material.

Holotype male, CHINA: Hainan: Baoting, 80 m, 21.vii.1960, S. F. Li leg. ( IZCAS).

Paratypes. CHINA: Hainan: 6 males, 24 females, Baoting, 80 m, 23., 24. and 27.vii.1960, S. F. Li, X. Z. Zhang & C. Q. Li leg.; 11 males, 15 females, Tongshi, 340 m, 23., 24. and 25.vi., 31.vii., 1., 4. and 6.viii.1960, S. F. Li, X. Z. Zhang & C. Q. Li leg.; 1 male, 1 female, Yinggen, 200 m, 4.v. and 5.vii.1960, S. F. Li leg.; 1 female, Shuiman, 640 m, 25.v.1960, C. Q. Li leg.; 2 males, Wanning, 10 m, 12., 13.iv.1960, S. F. Li & C. Q. Li leg.; 3 females, Qiongzhong, 15-17.vii.1960, X. Z. Zhang & C. Q. Li leg.; 2 males, 3 females, Kwangtung, 3., 4. and 5.iv., 13. and 26.viii.1934, C. Ho leg. (all IZCAS); 1 male, Mangrin, 9.vi.1904; 1 female, Mon Boi, 29.v.1904 (both BMNH).

Diagnosis.

Orthopagus hainanensis sp. n. is similar to O. lunulifer in most characters, but can be differentiated from the latter by the ivory white to pale ochraceous vertex with a pair of dark brown spots on each side of midline in basal third (in O. lunulifer , the vertex is nearly dark brown from base to apex) and the male segment X being elongate in dorsal view, with ratio of length to width near middle 1.9-2.0 (in O. lunulifer , the male segment X is shorter and wider in dorsal view, with ratio of length to width near middle 1.2-1.3). Orthopagus hainanensis sp. n. is also similar to O. exoletus in the predominantly light vertex but it differs from the latter by a slightly longer head, the male pygofer with dorso-posterior margin produced into a broad and short lobe in lateral view (the pygofer bears a larger tooth-like process dorso-posteriorly in O. exoletus ) and the aedeagus with two pairs of larger (more strongly inflated) dorsolateral membranous lobes and endosomal processes covered with minute spines (indistinct in O. exoletus ).

Description.

Measurements (5 males, 10 females). Body length (from apex of head to tip of forewings): male 11.7-12.9 mm, female 13.1-14.6 mm; head length (from apex of cephalic process to base of eyes): male 1.4-1.5 mm, female 1.5-1.6 mm; head width (including eyes): male 1.6-1.7 mm, female 1.6-1.7 mm; forewing length: male 9.3-10.3 mm, female 10.6-11.8 mm.

Coloration. General coloration as in generic description (Fig. 2E-F View Figure 2 ). Head ivory white to pale ochraceous, vertex with basal corners castaneous, a pair of large fuscous patches on each side of midline at basal third, and pale fuscous apical diamond-shaped spot (Fig. 6A View Figure 6 ); frons pale with series of small pale fuscous spots along intermediate and lateral carinae, base without distinct dark spot (Fig. 6C View Figure 6 ). Forewing pattern as in Fig. 3C View Figure 3 . Hind wing membrane with a relatively narrow dark brown streak along the apical portion of CuA1 vein, extending along hind wing apical margin.

Structure. Cephalic process (Fig. 6A-C View Figure 6 ) relatively elongate. Vertex (Fig. 6A View Figure 6 ) with ratio of length at midline to width between eyes 1.65-1.75. Transition of vertex to frons narrowly rounded in lateral view (Fig. 6B View Figure 6 ). Frons (Fig. 6C View Figure 6 ) relatively narrow, with ratio of length at midline to maximum width 2.7-2.9.

Male genitalia. Pygofer in lateral view (Fig. 6E View Figure 6 ) with dorso-posterior margin produced into a broad and relatively short blunt lobe; in ventral view (Fig. 6F View Figure 6 ) much longer than in dorsal view (Fig. 6D View Figure 6 ) with ratio of ventral to dorsal length about 4.2. Gonostyles (Fig. 6E-F View Figure 6 ) large, broad medially, with dorsal margin weakly sinuate. Aedeagus (Fig. 6G-I View Figure 6 ) with endosomal processes covered with minute spines, extended posteriad and strongly curved dorso-anteriad; phallobase with one pair of large, strongly inflated dorsolateral lobes, their apices gradually convergent and tapering posteriad (Fig. 6G-I View Figure 6 ), and one pair of small, thumb-like ventral lobes (Fig. 6I View Figure 6 ). Segment X relatively narrow and elongate, in lateral view, narrow basally, widening beyond middle, apex subacute (Fig. 6E View Figure 6 ), in dorsal view, widest medially, with ratio of length to width 1.9-2.0 (Fig. 6D View Figure 6 ).

Female genitalia as in generic description (Fig. 7A-G View Figure 7 ).

Etymology.

The new species is named for its occurrence in Hainan Island, China. The specific epithet Orthopagus hainanensis is to be treated as a latinized adjective in nominative singular.

Distribution.

So far only known from Hainan Island, China.