Tan, Ming Kai; Wahab, Rodzay bin Haji Abdul; Japir, Razy; Chung, Authur Y. C.; Robillard, Tony
Nisitrus malaya Robillard & Tan 2021, sp. nov.
Revision of the cricket genus Nisitrus Saussure (Orthoptera: Gryllidae: Eneopterinae) and descriptions of five new species
Tan & Wahab & Japir & Chung & Robillard, 2021
Tan, Wahab, Japir, Chung & Robillard, 2021
Fig. 7. Habitus of ♂♂ in dorsal view. A. Nisitrus brunnerianus Saussure, 1878. B. N. crucius Robillard & Tan sp. nov. C. N. hughtani Robillard & Tan sp. nov. D. N. insignis Saussure, 1878. E. N. malaya Robillard & Tan sp. nov. F. N. musicus Ingrisch, 1987. G. N. vittatus (Haan, 1844). Scale bar = 10 mm.
Fig. 9. Habitus of ♀♀ in dorsal view. A. Nisitrus malaya Robillard & Tan sp. nov. B. N. musicus Ingrisch, 1987. C–D. N. rindu Robillard & Tan sp. nov. E. N. vittatus (Haan, 1844). Scale bar = 10 mm.
Fig. 10. Face in anterior view. A. Nisitrus brunnerianus Saussure, 1878. B. N. crucius Robillard & Tan sp. nov. C. N. danum Robillard & Tan sp. nov. D. N. hughtani Robillard & Tan sp. nov. E. N. insignis Saussure, 1878. F. N. malaya Robillard & Tan sp. nov. G. N. musicus Ingrisch, 1987. H. N. rindu Robillard & Tan sp. nov. I. N. vittatus (Haan, 1844). Scale bar = 2 mm.
Fig. 11. Head and pronotum in dorsal view. A. Nisitrus brunnerianus Saussure, 1878. B. N. crucius Robillard & Tan sp. nov. C. N. danum Robillard & Tan sp. nov. D. N. hughtani Robillard & Tan sp. nov. E. N. insignis Saussure, 1878. F. N. malaya Robillard & Tan sp. nov. G. N. musicus Ingrisch, 1987. H. N. rindu Robillard & Tan sp. nov. I. N. vittatus (Haan, 1844). Scale bar = 2 mm.
Fig. 12. Body in lateral view. A. Nisitrus brunnerianus Saussure, 1878. B. N. crucius Robillard & Tan sp. nov. C. N. danum Robillard & Tan sp. nov. D. N. hughtani Robillard & Tan sp. nov. E. N. insignis Saussure, 1878. F. N. malaya Robillard & Tan sp. nov. G. N. musicus Ingrisch, 1987. H. N. rindu Robillard & Tan sp. nov. I. N. vittatus (Haan, 1844). Scale bar = 5 mm.
Fig. 13. Male tegmina in dorsal view. A. Nisitrus brunnerianus Saussure, 1878.B. N. crucius Robillard & Tan sp. nov. C. N. hughtani Robillard & Tan sp. nov. D. N. insignis Saussure, 1878. E. N. malaya Robillard & Tan sp. nov. F. N. musicus Ingrisch, 1987. G. N. vittatus (Haan, 1844). Scale bar = 2 mm.
Fig. 14. Female tegmina in dorsal view. A. Nisitrus brunnerianus Saussure, 1878. B. N. crucius Robillard & Tan sp. nov. C. N. danum Robillard & Tan sp. nov. D. N. hughtani Robillard & Tan sp. nov. E. N. insignis Saussure, 1878. F. N. malaya Robillard & Tan sp. nov. G. N. musicus Ingrisch, 1987. H. N. rindu Robillard & Tan sp. nov. I. N. vittatus (Haan, 1844). Scale bar = 2 mm.
Fig. 16. Male genitalia in ventral view. A. Nisitrus brunnerianus Saussure, 1878. B. N. crucius Robillard & Tan sp. nov. C. N. hughtani Robillard & Tan sp. nov. D. N. insignis Saussure, 1878. E. N. malaya Robillard & Tan sp. nov. F. N. musicus Ingrisch, 1987. G. N. vittatus (Haan, 1844). Scale bar = 1 mm.
Fig. 17. Female genitalia in lateral (A, C, E, F, H, J, L, N, P) and dorsal (B, D, G, I, K, M, O, Q) views. A–B. Nisitrus brunnerianus Saussure, 1878. C–D. N. crucius Robillard & Tan sp. nov. E. N. danum Robillard & Tan sp. nov. F–G. N. hughtani Robillard & Tan sp. nov. H–I. N. insignis Saussure, 1878. J–K. N. malaya Robillard & Tan sp. nov. L–M. N. musicus Ingrisch, 1987. N–O. N. rindu Robillard & Tan sp. nov. P–Q. N. vittatus (Haan, 1844). Scale bar = 0.5 mm.
Fig. 26. Principal Coordinates Analysis (PCoA) of the acoustic properties of the calling songs of N. vittatus (Haan, 1844), N. malaya Robillard & Tan sp. nov. and N. musicus Ingrisch, 1987.
Fig. 23. A–D. Nisitrus malaya Robillard & Tan sp. nov. E–H. N. vittatus (Haan, 1844). Adult ♂♂ (A–B, E–F) and ♀♀ (C–D, G–H) in their natural environment. Photograph credit: Ming Kai Tan.
Fig. 24. Nymphs in their natural environment. A–C. Nisitrus malaya Robillard & Tan sp. nov. D–F. N. vittatus (Haan, 1844). Photograph credit: Ming Kai Tan.
Fig. 27. A. Habitat where Nisitrus vittatus (Haan, 1844) can be found in Sungai Belalong in Brunei. B. Habitat where Nisitrus malaya Robillard & Tan sp. nov. can be found in Singapore. The arrows point at the type of plants (Macaranga sp. in A, Piper sarmentosum Roxb. in B) on which Nisitrus can be found in relatively large numbers. Photograph credits: Yale-NUS students (A), Ming Kai Tan (B).
Fig. 5. Map of Southeast Asia showing the distribution of species of Nisitrus Saussure, 1878. Each coloured symbol represents one sampling or observation locality listed in the material in the text.
Fig. 25. Acoustics ofNisitrus malaya Robillard & Tan sp. nov. (A–C) and N. vittatus (Haan, 1844) (D–F). A, D. Series of echemes. B, F. One echeme. C, F. Spectral plot of one echeme.