Polydictya robusta Gerstaecker, 1895

Constant, Jérôme, 2024, Polydictya lanternflies of Java: New species, taxonomy and identification key (Hemiptera: Fulgoromorpha: Fulgoridae), Belgian Journal of Entomology 147, pp. 1-26 : 21-24

Polydictya robusta Gerstaecker, 1895

Figs 11-13

Polydictya robusta GERSTAECKER, 1895: 26 (described; compared to P. basalis ( Hope, 1843) and P. fervida Gerstaecker, 1895 ). — SCHMIDT, 1912: 62 (in comparative note between Polydictya , Holodictya Gerstaecker, 1895 and Coelodictya Jacobi, 1910 ). — METCALF, 1947: 87 (catalogued). — LALLEMAND, 1963: 17 (keyed), pl. 1 figs 14-17 (tegmen, anal tube, gonostylus and aedeagus). — NAGAI & PORION, 1996: 14 (catalogued), pl. 2 fig. 27 (holotype illustrated). — CONSTANT, 2016: 4 (listed from Sumatra).

non Polydictya robusta – NAGAI & PORION, 1996: pl. 2 fig. 27 (holotype of P. javanensis illustrated – based on erroneous synonymy!).

DIAGNOSIS

The closest species are P. sumatrana Schmidt, 1910 from Sumatra and P. javanensis from Java. However, P. robusta can be separated

1. from P. sumatrana (see illustration in NAGAI & PORION, 1996: fig. 23) by its green-brown abdomen (bright red in P. sumatrana ), entirely brown pronotum (yellow in posterior portion in P. sumatrana ) and olivaceous head (yellow-brown in P. sumatrana ).

2. from P. javanensis by its entirely brown pronotum (yellow in posterior portion in P. javanensis ), olivaceous head (yellow-brown in P. javanensis ) and the characters of the male terminalia, including the sinuate laterodorsal lamina of the endosomal process (ep – Fig. 13 E ; more or less straight in P. javanensis – Fig. 7 E ).

view. F, head and prothorax, lateral view.

MATERIAL EXAMINED

HOLOTYPE

INDONESIA • ♂; Sumatra; [no date given]; ZIMG.

ADDITIONAL MATERIAL

INDONESIA • 1 ♂, 1 ♀; Sumatra, Aceh, S of Langsa ; [4°27’56”N, 97°58’54”E]; Apr. 2005; local collector; I.G.: 33.093; RBINS .

SUPPLEMENTARY DESCRIPTION

Male terminalia ( Fig. 13 )

Pygofer (Py – Fig. 13 A-B) strongly higher than long (without lateral lobe), with posterior margin showing a broad, elongate, laminate lateral lobe (llp) in dorsal half, strongly incurved and with dorsal margin slightly twisted, directed dorso-posteromesad, distal portion slightly broadened and posterior margin of lobe rounded; anterior margin of pygofer concave in lateral view ( Fig. 13A ). Anal tube (An – Fig. 13 A-C) in dorsal view elongate, 1.40 times as long in midline, as broad (at widest point), with lateral margins sinuate from base towards apex, rather strongly widening in distal portion and broadest at 3/4 of total length ( Fig. 13 B ); in lateral view, rather strongly curved ventrally and slightly sinuate, directed posteroventrad, in distal portion (area of anal opening) ( Fig. 13A ); apical margin slightly rounded in caudal view ( Fig. 13 C ). Gonostyli in lateral view ( Fig. 13A ) elongate, about 1.86 times as long as high with posterior half broader; strong lateral hook (lhg) directed posteroventrad at about half-length, under dorsal margin; apical margin oblique, slightly emarginate in middle portion with dorsal and ventral angles rounded; dorsal and ventral margins moderately sinuate. Aedeagus ( Fig. 13 D-E) with endosomal processes (ep) elongate with distal portion curved mesad and slightly twisted, and apical margin obliquely truncate; dorsolateral lamina on distal 2/3, vertical basally, then twisted to become horizontal at about midlength of process, looking sinuate in dorsal view with distal half (horizontal portion) with lateral margin irregularly, weakly undulate/dentate (blunt teeth); lamina sinuate in lateral view.

DISTRIBUTION

Indonesia: Sumatra.

Figures

Fig. 11. Polydictya robustaGerstaecker, 1895, holotype ♂ (ZIMG – photographs © P. Michalik). A, habitus, dorsal view. B, habitus, ventral view. C, head and prothorax, lateral view. D, labels and genitalia tubes.

Fig. 12. Polydictya robusta Gerstaecker, 1895, ♂ Sumatra, Aceh Province (RBINS). A, habitus, dorsal view. B, head, pro- and mesonotum, dorsal view. C, habitus, ventral view. D, frons, perpendicular view. E, habitus, lateral

Fig. 13. Polydictya robusta Gerstaecker, 1895, ♂ Sumatra, Aceh Province (RBINS), termitalia. A, Pygofer, anal tube and gonostylus, left lateral view. B, Anal tube and pygofer, dorsal view. C, apex of anal tube, posterodorsal view. D, aedeagus, lateral view. E, aedeagus, dorsal view.

Fig. 7. Polydictya javanensis Schmidt, 1910. A–E, ♂ from Java, Mount Gumitir (MHNL), terminalia (scale bars = 1 mm). A, Pygofer, anal tube and gonostylus, left lateral view. B, Anal tube and pygofer, dorsal view. C, apex of anal tube, posterodorsal view. D, aedeagus, lateral view. E, aedeagus, dorsal view. F–G, Additional records from photographs (© E. Bhaskara). F, ♀ from Java, Mount Halimun. G, ♀ from Bali, Tabanan.