Macrobrachys tonkinensis Lallemand, 1950

Constant, Jérôme & Bartlett, Charles R., 2019, New records and species in five planthopper families from Keo Seima Wildlife Sanctuary, Cambodia with checklist of Cambodian planthoppers (Hemiptera: Fulgoromorpha), Belgian Journal of Entomology 83, pp. 1-27 : 1-27

Macrobrachys tonkinensis Lallemand, 1950 new country record

Figs 3–5

Macrobrachys tonkinensis LALLEMAND, 1950: 150 [described].

Macrobrachys tonkinensis – METCALF, 1956: 29 [catalogued]. — CONSTANT, 2006: 46 [described], fig. 2 [distribution map], pl. 1 A–D [habitus, frons and posterior leg illustrated].

MATERIAL EXAMINED

CAMBODIA: 5♀♀ ( Fig. 3 ) : Mondulkiri Province, Keo Seima Wildlife Sanctuary, near O Pam station, 12°11’39”N 107°01’01”E, 14–24.XI.2018, leg. J. Constant, I.G.: 33.919 (4♀♀: RBINS; 1♀: RUPP) .

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MATERIAL EXAMINED FROM PHOTOGRAPHS

THAILAND: 1♀ ( Fig. 4 ): Khao Soi Dao Wildlife Sanctuary, 15.XI.2014, Ian Dugdale & Punjapa Phetsri .

NOTE. In the female holotype of Macrobrachys tonkinensis Lallemand, 1950 , as well as in the second female specimen of the species in the MNHN collection, the green colour is completely faded and the tegmina of the specimens are orange ( CONSTANT, 2006). In the newly collected specimens as well it was observed that the green colour is very prompt to fade and turn into orange although the specimens were mounted just a few days after collecting.

The specimens in KSWS were all found sitting on broad leaves, both in daytime and night. However, they were not observed feeding on the leaves and no male was found despite an intensive search. The proposed conspecific treatment of the specimens from Vietnam, Cambodia and Thailand requires confirmation based on the examination of genitalia when males become available. Indeed, closely related species of Loxocephalini can sometimes be separated by the examination of the male genitalia only as it was shown e.g., for the genus Amychodes Karsch, 1895 ( CONSTANT, 2004). The material listed above represents the first record of the tribe Loxocephalini in Cambodia.

Figures

Fig. 3. Macrobrachys tonkinensis Lallemand, 1950, ♀♀ in nature in Keo Seima W.S. A–C, 15.XI.2018 (at night). D–F, 22.XI.2018 (in the day). G–H, 22.XI.2018 (at night).

Fig. 4. Macrobrachys tonkinensis Lallemand, 1950, ♀ in nature in Khao Soi Dao W.S. A–D, 15.XI.2014 (photographs © I. Dugdale & P. Phetsri).