Polydictya draysapensis, Constant & Pham, 1843

Constant, Jérôme & Pham, Hong Thai, 1843, Polydictya lanternflies of the Indochinese region: Six new species and identification key (Hemiptera: Fulgoromorpha: Fulgoridae), Belgian Journal of Entomology 86, pp. 1-42 : 1-42

Polydictya draysapensis sp. nov.

urn:lsid:zoobank.org:act:8FD2A01B-6EFA-403A-BB30-2B180B54C917

Figs 4–5

DIAGNOSIS. The species can be separated from all other Polydictya species by the following combination of characters: (1) tegmina bicolorous, brown with basal 1/3 pale yellowish ( Fig. 5 A ); (2) posterior wings with basicostal subrectangular bluish white area and well delimited basal red marking ( Fig. 5 A ); (3) frons regularly rounded in dorsal view, not projecting anteriorly ( Fig. 5 B, D ), yellow-brown ( Fig. 5 D ); (4) protibiae slightly laminate, brown with broad pale yellow ring ( Fig. 5 A, C ); (5) abdomen red dorsally ( Fig. 5 A ); (6) genital segments red.

The closest species are P. basalis Hope, 1843 ( Myanmar, India, Sumatra, Malaysia, Vietnam according to NAGAI & PORION, 1996 – Fig. 16 ), P. jakli Constant, 2016 (Siberut Island – CONSTANT, 2016: fig. 5), P. johannae Lallemand, 1956 ( Vietnam: Phu Quoc Island – Fig. 17 ), P. negrito ( Distant, 1906) (Andaman Islands – CONSTANT & MOHAN, 2017: fig. 4) and P. uniformis (Walker, 1857) (Borneo, Thailand according to NAGAI & PORION, 1996 – Fig. 21 ), all having posterior wings with basicostal subrectangular bluish white area, from which P. draysapensis can be separated by characters (1): the five other species do not show bicolorous tegmina brown with basal 1/3 pale yellowish and (2): the five other species have no or not well delimited red basal marking on posterior wings.

ETYMOLOGY. The species epithet refers to Dray Sap, the type locality of this new species in Dak Nong Province, Vietnam .

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TYPE MATERIAL. VIETNAM: Holotype ♀ ( Fig. 5 ): [12/10/2017, Dray Sap, Krong No , Dak Nong, Leg. Pham Hong Thai] ( VNMN).

DESCRIPTION.

Measurements and ratios: LT: ♀ (n = 1): 29.0 mm; LTg/BTg = 2.8; BV/LV = 5.0; LF/BF = 0.76.

Head: ( Fig. 5 B, D, F ) pale yellow-brown with ventral portion of frons and clypeus darker; vertex weakly curved and deeply grooved transversely with lowest point in middle, and with all 4 margins carinate; frons slightly visible from above, convex, smooth, subquadrate with lateral margins emarginate at antennae, impressed in front of eye and with second, C-shaped impression following lateral margin on ventral half; clypeus narrower and shorter than frons; labium elongate, yellow brown, surpassing metacoxae; antennae dark brown with scape cylindrical, elongate; pedicel bulbous.

Thorax: ( Fig. 5 B, D, F ) prothorax pale yellow-brown with 6 whitish spots in a row along anterior margin; mesonotum castaneous with posteromedian portion sligthly paler and whitish spot at each basal angles of scutellum. Pronotum coriaceous with median carina visible on central portion and concentric wrinkles on each side of carina anteriorly; lateral lobes of pronotum smooth with some impressed points. Mesonotum smooth without distinct carina. Tegulae yellow-brown; metanotum reddish brown.

Tegmina: ( Fig. 5 A, C, E ) irregular basal transverse line of black spots followed by pale yellowish area with veins concolorous on basal 1/3; distal 2/3 brown with veins paler and weak cloudy paler markings; costal and sutural margins subparallel, slightly widening after clavus; apex obliquely rounded.

Posterior wings: ( Fig. 5 A, C ) brown with veins darker; basicostal subrectangular bluish white area slightly surpassing half length with veins concolorous and bright red rather well demarcated markings basally with veins concolorous except in anal area with veins black; broader than tegmina.

Legs: ( Fig. 5 A, C ) elongate and slender with pro- and mesofemora and tibiae dorsoventrally flattened; pro- and mesotibiae narrowing basally and distally. Pro- and mesofemora and coxae brown; pro- and mesotibiae brown with a broad yellow ring slightly distally to mid length; pro- and mesotarsomeres black. Metafemora brown, paler than pro- and mesofemora; metatibiae yellow-brown, slightly darker basally; metatarsomeres yellow-brown. Metatibiotarsal formula: (5) 7/8/7.

Abdomen: ( Fig. 5 A, C ) entirely bright red.

Male genitalia: u nknown.

DISTRIBUTION. Central Vietnam: Dak Nong Province ( Fig. 4 ).

Figures

Fig. 4. Polydictya spp. nov. and P. chantrainei Nagai & Porion, 2004, distribution map.

Fig. 5. Polydictya draysapensis sp. nov., holotype ♀ (VNMN). A, habitus, dorsal view; B, head, pro- and mesonotum, dorsal view. C, habitus, ventral view. D, frons, normal view. E, habitus, lateral view. F, head and prothorax, lateral view.

Fig. 16. Polydictya basalis (Hope, 1843), holotype ♀ (OUMNH – photographs © Z. Simmons). A, habitus, dorsal view; B, labels. C, habitus, ventral view. D, head, pro- and mesonotum, dorsal view. E, head, frontal view. E, head and thorax, lateral view.

Fig. 17. Polydictya johannae Lallemand, 1956, holotype ♀ (FSAG). A, habitus, dorsal view; B, habitus, ventral view. C, frons, normal view. D, head, pro- and mesonotum, dorsal view. E, head and thorax, lateroventral view. F, labels.

Fig. 21. Polydictya uniformis Walker, 1957, holotype ♂ (BMNH). A, habitus, dorsal view; B, habitus, ventral view. C, frons, normal view. D, head, pro- and mesonotum, dorsal view. E, head and thorax, lateroventral view. F, labels.