Small crickets of New Zealand (Orthoptera: Grylloidea: Trigonidiidae and Mogoplistidae), with the description of two new genera and species Author Hegg, Danilo 34DFC18A-F53D-417F-85FC-EF514F6D2EFD Wētā Conservation Charitable Trust, 135 Blacks Road, Ōpoho, Dunedin 9010, New Zealand. danilo@wetaconservation.org.nz text European Journal of Taxonomy 2024 2024-09-09 955 1 1 87 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2655/12275 journal article 10.5852/ejt.2024.955.2655 2118-9773 13742408 5D22E144-EF73-4085-9774-E853EEEC6001 Trigonidium ( Trigonidium ) australianum ( Chopard, 1925 ) Figs 31 , 32E–F Metioche australiana Chopard, 1925: 36 . Trigonidomorpha sjostedti Chopard, 1925: 40 syn. nov. Trigonidomorpha areolata Chopard, 1925: 38 syn. nov. Metioche australiana – Chopard 1968: 334 . Metioche areolata – Chopard 1968: 334 . Trigonidium australiana – Otte & Alexander 1983: 228 . Trigonidomorpha sjostedti – Otte & Alexander 1983: 223 . — Rentz & Su 2019: 316 . Trigonidium ( Trigonidium ) australiana – Rentz & Su 2019: 304 . Fig. 32. Live trigs (subfamily Trigonidiinae ). A–D . Trigonidium ( Trigonidium ) maoricum ( Walker, 1869 ) . New Zealand. A . Adult ♂, Tumbledown Bay, Banks Peninsula. B . Adult ♂, Kerikeri, Northland. C . Adult ♀, Māhoe Reserve, Lincoln. D . Fully winged adult ♀. Kerikeri, Northland. E–F . Trigonidium ( Trigonidium ) australianum ( Chopard, 1925 ) . Oxley Creek Commons, Brisbane, QLD, Australia. E . Adult ♀. F . Adult ♂. Note: all specimens are posed on unnatural backgrounds in captivity. Amended diagnosis A small trig (body length 4 to 5 mm ), with black body and yellow legs, very similar to Trigonidium ( Trigonidium ) maoricum in every aspect. Slightly smaller than the latter, it has a shorter stridulatory file with less than 20 teeth. Adult insects come in a wingless morph without hindwings or auditory tympana, and in a winged morph with hindwings and with auditory tympana. The winged morph was previously mistaken to be a different species, Trigonidomorpha sjostedti . Etymology The Latin adjective australianum refers to the country the insect is found in. Material examined AUSTRALIA • 1 ♂ , 1 ♀ ; Queensland , Brisbane , Oxley Creek Commons ; 27.53566° S , 152.99306° E ; 10 m a.s.l. ; 17 Nov. 2023 ; D. Hegg leg.; in tall grass; insect net ; MPN OR0403 , OR0405 • 1 ♂ ; same data as for preceding; GenBank: PP761115 ; MPN OR0402 • 1 ♀ ; same data as for preceding; GenBank: PP761116 ; MPN OR0404 . Description Not included in this paper since this is not a New Zealand species. MEASUREMENTS . See Table 7 . Distribution Australia . Northern, eastern and western coastal regions.