Twenty-one new species of the Neotropical rove beetle genus Neolindus Scheerpeltz (Coleoptera, Staphylinidae, Paederinae) Author Guzman, Yoan Camilo AD8443F6-89D0-4F71-9F67-4040D20ECB02 Museum and Institute of Zoology, Polish Academy of Sciences, Warsaw, Poland. ycamiloguzmans@gmail.com Author Tokareva, Alexandra F2DB3539-310F-4453-81FA-A6BC0D5C885D Museum and Institute of Zoology, Polish Academy of Sciences, Warsaw, Poland. atokareva@miiz.waw.pl Author Koszela, Katarzyna 06C16202-4569-4156-9FB1-EA4DEE14AE88 Museum and Institute of Zoology, Polish Academy of Sciences, Warsaw, Poland. kat.koszela@gmail.com Author Żyła, Dagmara 0A7FEB0F-308C-4FDF-AD0D-8074BC69F0B3 Museum of Nature Hamburg, Leibniz Institute for the Analysis of Biodiversity Change, Hamburg, Germany. ycamiloguzmans@gmail.com text European Journal of Taxonomy 2024 2024-06-24 942 1 76 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2581/11745 journal article 300001 10.5852/ejt.2024.942.2581 5200ad90-b89a-4d6e-b7f8-de33e9bc509c 2118-9773 12550288 DF991BC4-1761-4C5D-96E5-EFC62F8F7D1A Neolindus ornatus Guzman, Tokareva & Żyła sp. nov. urn:lsid:zoobank.org:act: C9A162F2-2A4E-490A-842A-36D00DE02441 Figs 2A , 12 ; Supp. file 2 Diagnosis Neolindus ornatus Guzman, Tokareva & Żyła sp. nov. is similar to N. cuneatus in sternite and tergite VIII ( Fig. 12C, D and figs 177, 178 in Herman 1991 , respectively). However, N. ornatus has longer pPMS and longer, bifid pLS of aedeagus than N. cuneatus ( Herman 1991 : fig. 179; Fig. 12F–I ). Etymology The name is derived from the Latin word ‘ ornatus ’ meaning ‘adorned’ or ‘equipped’, referring to the complex structure of the aedeagus. An adjective. Type material Holotype FRENCH GUIANA • ♂ ; “ Neolindus ornatus Guzman, Tokareva & Żyła 2024 HOLOTYPE [red label] \\ Matoury , 41.5 km SSW on HWY N2 ; 4°37’22’’N , 52°22’35’’W ; 50 m [m a.s.l.]; 29 May–9 Jun 1997 , J. Ashe , R. Brooks Leg. ; FG1AB97 170; ex: light intercept trap \\ SM0100511 KUNHM-ENT [barcode]”; KUNHM-ENT . Paratypes FRENCH GUIANA • 1 ♂ ; “ Neolindus ornatus Guzman, Tokareva & Żyła 2024 PARATYPE [yellow label] \\ Matoury , 41.5 km SSW on HWY N2 ; 4°37’22’’N , 52°22’35’’W , 50 m ; 29 May–9 Jun 1997 , J. Ashe , R. Brooks Leg.; FG1AB97 170 ex: flight intercept trap \\ [barcode] SM0100507 KUNHM-ENT ”; KUNHM-ENT • 1 ♂ ; “ Cayenne , 33.5 km S and 8.4 km NW of Hwy N2 on Hwy D5 ; 4°48’18’’N , 52°28’ 41’’W ; 30 m ; 26–28 May 1997 ; J. Ashe , R. Brooks Leg. ; FG1AB97 059 ex: flight intercept trap \\ [barcode] SM0099850 KUNHM-ENT ”; KUNHM-ENT . Description MEASUREMENTS . BL (7.3), H (0.48, 0.79), A (1.31), A1 (0.3, 0.09), A2 (0.05, 0.06), A3 (0.13, 0.06), A4 (0.09, 0.06), A5 (0.1, 0.06), A6 (0.01, 0.07), A7 (0.12, 0.07), A8 (0.11, 0.07), A9 (0.11, 0.08), A10 (0.11, 0.09), A11 (0.17, 0.09), NKW (0.40), GL (0.2), P (0.89, 0.91), E (1.16, 0.96), PC (0.41, 0.26), PF (0.69, 0.26), PT (0.32, 0.12), MSC (0.44, 0.24), MSF (0.82, 0.19), MST (0.47, 0.09), MTC (0.46, 0.33), MTF (0.75, 0.22), MTT (0.65, 0.11). COLOURATION . Whole body and appendices brown. HEAD . Head capsule wider than long; anterior margin sinuate, dorsoventrally deflexed, slightly elevated; posterior margin rounded, with emargination in front of neck; posterior angles rounded, setation with 1 pair of PCS, 1 row of PMS, and longer setae near posterior margin before neck. Epicranium with umbilicate, low-density micropunctuation, setation with 1 pair of FS and 2 pairs of PFS, without OS. Gena with irregular surface, with depression from mandibular base to middle of eye, setation with 1 OT, MS, and POS; sockets of MS and POS umbilicate. Postgena with row of 1 or 2 setae in line from eye to gular suture; gular sutures reaching posterior margin of head joining neck pits; anterior part of gula with 2 setae; posterior margin of head with 2 setae near gular sutures. Neck with foramen magnum occupying ⅔ of occiput. Antenna moniliform from antennomere 5, shorter than head and pronotum combined ( Fig. 12A ); antennomeres longer than wide, tomentose pubescence from antennomere 4; antennomere 1 as long as antennomeres 2 and 3 combined, antennomere 3 longer than 2. Labrum bilobed, with U-shaped emargination ( Fig. 12A ; Supp. file 2). THORAX . Pronotum quadrate, with umbilicate randomly distributed micropunctures. Metasternal intercoxal process with 1 pair of acute processes, joining medially in U-like invagination. Elytron longer than wide, surface of elytra with moderately dense umbilicate punctures in 10–11 longitudinal rows ( Fig. 12A ; Supp. file 2). LEGS . Protibia with 4 well-developed combs of setae; apical comb longitudinal, composed of widely separated, thick setae; mesotibial apical ctenidium on both sides, inner longer than outer; mesotarsomere 1 as long as 2, mesotarsomere 3 equals to 4, shorter than 2, mesotarsomere 5 longer than 1; inner ctenidium of metatibia longer than outer; metatarsomere 1 longer than 2, metatarsomeres 3 and 4 as long as metatarsomere, metatarsomere 5 as long as metatarsomere 1. ABDOMEN . Male : tergites with low-density micropunctuation. Posterior margin of tergite VII straight ( Fig. 12B ). Posterior margin of sternite VII slightly emarginated, with small midpart invagination ( Fig. 12C ). Posterior margin of tergite VIII truncate ( Fig. 12D ). Posterior margin of sternite VIII with midlongitudinal V-shape emargination, with elevated area in midpart ( Fig. 12E ). Posterior margin of tergite IX with midlongitudinal deep emargination in ¾ of segment length, divided; aedeagus, in parameral view, median lobe basally narrower, and wider in middle, apex deeply invaginated, with prominent sclerotised rounded processes on each side; foramen triangular, with round angles; APS not visible; pLS flattened with 2 arms, apical arm, curving towards non-parameral side, ending in acute tip, basal arm projecting to parameral side ending as acute tip; pPMS flattened with 2 arms, apical arm tapering to end as acute tip, basal arm projects in parameral side with rounded end ( Fig. 12F–I ). Female : unknown. Fig. 12. Neolindus ornatus Guzman, Tokareva & Żyła sp. nov. , holotype, ♂ (KUNHM-ENT). A . Habitus, dorsal view. B−E . Abdominal segments, posterior margin schemes. B . Tergite VII. C . Sternite VII. D . Tergite VIII. E . Sternite VIII. F−I . Aedeagus. F . Parameral view. G . Parameral view scheme. H . Lateral view. I . Lateral view scheme. Scale bars: A = 1 mm; B–I = 0.25 mm. Distribution The species is known from the type locality in French Guyana (Cayenne, Roura, near Matoury) and the surrounding area. It was collected at low altitudes using a flight interception trap.