Revision of the cricket genus Nisitrus Saussure (Orthoptera: Gryllidae: Eneopterinae) and descriptions of five new species Author Tan, Ming Kai 2F544BE6-7986-4905-AE51-CF16B44D5251 Institut de Systématique, Evolution et Biodiversité (ISYEB), Muséum national dʼhistoire naturelle, CNRS, SU, EPHE, UA, 57 rue Cuvier, CP 50, 75231 Paris Cedex 05, France. mingkai@gmail.com Author Wahab, Rodzay bin Haji Abdul 50868E6A-34E4-471A-B941-C504CC9E895A Institute for Biodiversity and Environmental Research, Universiti Brunei Darussalam, Jalan Universiti, BE 1410, Brunei Darussalam. rodzay.wahab@ubd.edu.bn Author Japir, Razy B05E507D-FBA4-437F-AB03-94E349912EA5 Forest Research Centre (Sepilok), Sabah Forestry Department, P. O. Box 1407, 90715 Sandakan, Sabah, Malaysia. razy.Japir@sabah.gov.my Author Chung, Authur Y. C. 6E7371D6-6FF9-42DF-8745-4A8304CB0978 Forest Research Centre (Sepilok), Sabah Forestry Department, P. O. Box 1407, 90715 Sandakan, Sabah, Malaysia. arthur.Chung@sabah.gov.my Author Robillard, Tony 19BBE007-85D2-4325-8396-A1F4BAF5775C Institut de Systématique, Evolution et Biodiversité (ISYEB), Muséum national dʼhistoire naturelle, CNRS, SU, EPHE, UA, 57 rue Cuvier, CP 50, 75231 Paris Cedex 05, France. tony.robillard@mnhn.fr text European Journal of Taxonomy 2021 2021-07-28 761 1 1 75 http://dx.doi.org/10.5852/ejt.2021.761.1449 journal article 10.5852/ejt.2021.761.1449 bf24ff1f-569a-4222-afe1-8527c83d8003 2118-9773 5156259 519E2F56-40E1-4431-BC90-8484E308D16E Nisitrus rindu Robillard & Tan sp. nov. urn:lsid:zoobank.org:act: A3AE87F7-8196-4C9B-BDEF-8E9D21B92BE5 Figs 5 , 9C–D , 10H , 11H , 12H , 14H , 17N–O ; Tables 2 , 10 Nisitrus brunnerianus – Robillard & Desutter-Grandcolas 2004a: 276 (morphological phylogeny). Diagnosis This species differs from all known congeners by the combination of these characters: dorsum of head cream-coloured with a black band or T-shaped marking; frons completely black; pronotal lateral lobes yellow, their anterior ventral corner black. Female FW dorsal field with cells almost completely black; veins yellow; longitudinal veins on dorsal field with many more cross-veins, creating a net-like mosaic; lateral field with M, R cream-coloured. This species is similar to N. insignis by pattern on head dorsum, but differs by frons completely black (instead of yellow), unique pronotum colouration and female FW lateral field with M and R cream-coloured (instead of dark coloured). This species is also similar to N. brunnerianus , which probably occurs in sympatry, and N. hughtani sp. nov. by dark frons, but differs by the characteristic pattern on dorsum of head and pronotal lateral lobe, and by female FW lateral field hyaline in ventral half. It also differs from the sympatric N. vittatus and N. crucius sp. nov. by the black frons, pronotum lateral lobe and FW colouration. Etymology This species name refers to the word ʻrinduʼ, which means ʻloveʼ [verb] in Iban [a group of indigenous people from Borneo] language and ʻhome-sicknessʼ = ʻmissʼ [verb] in Bahasa Melayu (Malay language) and Indonesian. This new species is dedicated to the front-liners fighting against the COVID-19 pandemic who were far from their homes and loved ones during the early phase of the global pandemic (when the speciesʼ name was chosen). Material examined Holotype MALAYSIA – Sarawak • ♀ ; Mount Murud ; 6500 ft a.s.l. ; 3°54′28.44″ N , 115°29′12.68″ E ; 15 Apr. 1979 ; identified as Nisitra brunneriana by L. Chopard ; MNHN-EO-ENSIF10939 . Paratypes INDONESIA – Kalimantan • 3 ♀ ; “ West Borneo , Midden” [ borders of Apokajan, Boeloengan and Beraoe ]; 1°58′43″ N , 116°6′43″ E ; 15–20 Oct. 1925 ; H.C. Siebers leg.; identified as Nisitrus brunnerianus by T. Robillard 2004; MNHN-EO-ENSIF10940 to ENSIF10942 • 1 ♀ ; Long Petak ; 1°42′6″ N , 116°12′25″ E ; 450 m a.s.l. ; Sep. 1925 ; Brugs leg.; identified as Nisitrus brunnerianus by T. Robillard 2004; MNHN-EO-ENSIF10943 . MALAYSIA – Sabah • 1 ♀ ; near Long Pasia “Long Pa Sia” ; 4°24′22.05″ N , 115°43′40.97″ E ; 1020 m a.s.l. ; 1–14 Apr. 1987 ; C. v. Achterberg leg.; RMNH • 1 ♀ ; same collection data as for preceding; PII: N57; RMNH . – Sarawak • 1 ♀ ; Mount Tibang ; 1°39′ N , 114°34′ E ; 1700 m a.s.l. ; E.G. Mjöberg leg.; MNHN-EO-ENSIF10944 . Description Relatively large for the genus, colouration contrasted ( Fig. 9C–D ). Vertex cream-coloured with a variable longitudinal black band and one or two faint transverse black bands forming a T- or ʻ+ʼ-shaped black pattern ( Fig. 11H ). Scapes black, posterior end red brown. Antennae red brown with some segments black. Frons and face part of fastigium completely black, without yellow spots or bands ( Fig. 10H ). Mouthparts dark red brown to black. Maxillary palpi cream-coloured ( Fig. 10H ). Head lateral side black, sometimes with a small yellow spot at the ventro-posterior margin of eye ( Fig. 12H ). Pronotal disk generally black with lateral and posterior margins yellow ( Fig. 11H ); pronotal lateral lobe yellow, its ventro-anterior corner black ( Fig. 12H ). Legs red brown. FIIIs dark red brown, their inner basal area black; knees dark brown to black; TIIIs brown with black spines and spurs, dark brown to black near distal end; tarsomeres dark brown to black. Hindwings hyaline brown, with a longitudinal transparent window near external-basal area; longer than FWs, forming a dark brown tail exceeding FWs more than twice as long as pronotum. Abdomen generally black. Male Unknown. Female FOREWINGS. FW dorsal field with cells almost completely black; veins almost always yellow ( Fig. 14H ). Lateral field with M and R cream-coloured, sometimes with a cream-coloured patch at base; otherwise transparent or dark. FW venation: longitudinal veins on dorsal field with many cross-veins, creating a thin net-like mosaic. GENITALIA. Ovipositor distinctly longer than FIII; apex thin. Copulatory papilla conical, smaller and stout; apex folded ventrally, elongated, pointed; dorsal face with a sclerotized area; ventro-anterior end an oblong rim ( Fig. 17N–O ). Measurements See Table 10 . Table 10. Measurements of Nisitrus rindu Robillard & Tan sp. nov. (in mm, means in brackets).

PronL	PronW	FWL	FWW	HWT	FIIIL	FIIIW	TIIIL
Female holotype	1.8	2.8	11.3	3.4	6.0	13.0	2.3	13.3
Females (n = 5)	1.8–2.2 (2.0)	2.8–3.7 (3.1)	11.3–13.5 (12.5)	3.4–4.3 (3.8)	5.8–7.5 (6.7)	13.0–16.4 (15.2)	2.3–3.1 (2.8)	13.3–17.5 (15.5)

Ias	Dorsal spines of TIII Ibs Oas		Obs	TaIIIs	OL
Female holotype	17	3–5	21	3–6	3	17.3
Females (n = 5)	13–17 (15)	3–5	21–24 (23)	3–6	3	17.1–21.2 (18.9)

Ecology Unknown. Distribution Borneo: Sabah , Sarawak and Kalimantan. Type locality Malaysia : Sabah . Calling song Unknown.