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 10.5852/ejt.2024.942.2581 2118-9773 12550288 DF991BC4-1761-4C5D-96E5-EFC62F8F7D1A Neolindus longithorax Guzman, Tokareva & Żyła sp. nov. urn:lsid:zoobank.org:act: 39F8C257-B035-4DC9-8952-55AE96FC0E1D Fig. 6 ; Supp. file 2 Diagnosis Neolindus longithorax Guzman, Tokareva & Żyła sp. nov. resembles N. bidens in the structure of tergite VIII as well as the broader median lobe of the aedeagus. However, the posterior margin of tergite VIII in N. longithorax differs from that of N. bidens with a more prominent central lobe and less developed lateral lobes ( Herman 1991 : fig. 221; Fig. 6D ). Additionally, the aedeagus of N. longithorax has narrower and more elongate median lobe without median hole, contrasting with robust and medially widened median lobe with distinct median hole on parameral side of aedeagus in N. bidens ( Herman 1991 : fig. 222; Fig. 6F–G ). Etymology The specific epithet is a combination of Latin words ‘ longus ’ meaning ‘long’ and ‘ thorax ’ as an anatomical part of an insect and refers to relatively long thorax of this species. An adjective. Type material Holotype FRENCH GUIANA • ♂ ; “ Neolindus longithorax Guzman, Tokareva & Żyła 2024 HOLOTYPE [red label] \\ Saül , Galbao summit, 740 m [m a.s.l.]; 3°37’18’’N , 53°16’42’’W , 5–7 Jun 1997 ; J. Ashe , R. Brooks Leg.; FG1AB97 154; ex: flight intercept trap \\ SM0099826 KUNHM-ENT [barcode]”; KUNHM-ENT . Description MEASUREMENTS . BL (9.4), H (0.57, 0.9), A (1.95), a1 (0.42, 0.1), a2 (0.15, 0.07), a3 (0.23, 0.07), a4 (0.15, 0.09), a5 (0.14, 0.09), a6 (0.15, 0.08), a7 (0.15, 0.07), a8 (0.14, 0.09), a9 (0.14, 0.09), a10 (0.13, 0.09), a11 (0.15, 0.09), NKW (0.43), GL (0.24), P (1.01, 1.02), E (1.48, 1.24), PC (0.38, 0.37), PF (0.8, 0.5), PT (0.63, 0.2), MSC (0.54, 0.32), MSF (0.9, 0.23), MST (0.66, 0.1), MTC (0.43, 0.37), MTF (1.04, 0.26), MTT (0.1, 1.08). COLOURATION . Head brown; pronotum light brown; legs brown; elytra dark brown; abdomen brown. Fig. 6. Neolindus longithorax 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. 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 and 1 row of PMS. Epicranium with umbilicate, low-density micropunctuation, setation with 1 pair of FS and 1 pair of PFS, without OS. Gena with irregular surface, with depression from mandibular base to middle of eye, setation with 1 OT, MS, POS, and PTOS; sockets of all setae umbilicate. Postgena with row of 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 ¾ of occiput. Antenna moniliform from antennomere 4, longer than head and pronotum combined ( Fig. 6A ); antennomeres longer than wide, tomentose pubescence starting from antennomere 4; antennomere 1 as long as antennomeres 2 and 3 combined, antennomere 3 longer than 2. Labrum bilobed, with V-shaped emargination ( Fig. 6A ; Supp. file 2). THORAX . Pronotum quadrate, with umbilicate randomly distributed micropunctures absent in medial longitudinal line. Metasternal intercoxal process with 1 pair of minute rounded processes. Elytron longer than wide, surface of elytra with moderately dense umbilicate punctures in 8–10 longitudinal rows ( Fig. 6A ; 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 longer than 2, mesotarsomeres 3 and 4 as long as 2, mesotarsomere 5 longer than 1; inner ctenidium of metatibia longer than outer; metatarsomere 1 longer than metatarsomere 2, metatarsomeres 3 and 4 as long as metatarsomere 2, metatarsomere 5 longer than metatarsomere 1. ABDOMEN . Male : tergites with low-density randomly distributed micropunctuation. Posterior margin of tergite and sternite VII straight ( Fig. 6B–C ). Posterior margin of tergite VIII trilobed, with slightly triangular central lobe, lateral lobes less developed ( Fig. 6D ). Posterior margin of sternite VIII with midlongitudinal U-shape emargination; 2 lobes delimiting emargination with row of 5 dark setae; lateral angles slightly elevated ( Fig. 6E ). Posterior margin of tergite IX with midlongitudinal deep emargination in ½ of segment length; aedeagus, in parameral view, median lobe of uniform width along sides, slightly narrowing at base; apex with median emargination with elevated thinner disrupted edges laterally. pPMS of complex form, quadrate, flattened, shorter than APS. pLS not visible. APS spoon-like, flat, protruding upwards, with apex divided into 2 oval lobes ( Fig. 6F–I ). Female : unknown. Distribution This species is known only from the type locality in French Guiana (Saint-Laurent-du-Maroni, Saül, Mont Galbao). It was collected at a higher altitude, 740 m a.s.l., by a flight interception trap.