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 parasinuatus Guzman, Tokareva & Żyła sp. nov. urn:lsid:zoobank.org:act: FAD92BD2-8A53-4DBC-88F1-3BD907287FD2 Fig. 15 ; Supp. file 2 Diagnosis This species resembles N. sinuatus and N. basisinuatus , but can be distinguished by a combination of characters. Unlike in N. sinuatus , the posterior margin of male sternite VIII in N. parasinuatus Guzman, Tokareva & Żyła sp. nov. has a wide emargination with a concave middle part surrounded by invagination on the sclerite ( Herman 1991 : fig. 199; Fig. 15E ). In contrast to N. basisinuatus , the posterior margin of tergite VIII in N. parasinuatus is rounded ( Herman 1991 : fig. 194; Fig. 15D ). In comparison to both species, the aedeagus of N. parasinuatus lacks a pair of setal brushes near the median invagination on the parameral side ( Herman 1991 : figs 193, 198; Fig. 15F–G ). Etymology The specific epithet is a combination of ‘ para ’, a Latin prefix that means ‘similar to’ or ‘equal’, and ‘ sinuatus ’ as the name of the species described by Herman (1991) , N. sinuatus . It indicates the similarity in the morphology of the aedeagi of the two species. An adjective. Type material Holotype COLOMBIA • ♂ ; “ Neolindus parasinuatus Guzman, Tokareva & Żyła 2024 HOLOTYPE [red label] \\ Amazonas , PNN [ National Natural Park ] Amacayacu , San Martin ; 3°46’S , 70°18’W ; Malaise; 19–27 Out 1997; 150 m [m.a.s.l]; B. Amado Leg. ; M.839 \\ SM0549284 KUNHM-ENT [barcode]”; KUNHM-ENT . Paratypes COLOMBIA • 1 ♂ ; “ Neolindus parasinuatus Guzman, Tokareva & Żyła 2024 PARATYPE [yellow label] \\ Amazonas , PNN Amacayacu , San Martin ; 3°46’S , 70°18’W ; 150m ; Malaise; 11–29 Nov 2000 ; B. Amado Leg. ; M.1318. \\ SM0549282 KUNHM-ENT [barcode]”: KUNHM-ENT • 1 ♂ ; same data as for preceding; “ 19–27 Nov 2000 \\ SM549297 KUNHM-ENT [barcode]”; KUNHM-ENT . Description MEASUREMENTS . BL (7.9), H (0.85, 0.69), A (1.67), a1 (0.37, 0.08), a2 (0.13, 0.05), a3 (0.15, 0.07), a4 (0.13, 0.07), a5 (0.11, 0.08), a6 (0.14, 0.09), a7 (0.14, 0.09), a8 (0.13, 0.86), a9 (0.12, 0.89), a10 (0.1, 0.1), a11 (0.14, 0.09), NKW (0.37), GL (0.23), P (0.86, 0.92), E (1.27, 1.2), PC (0.63, 0.38), PF (0.71, 0.29), PT (0.43, 0.14), MSC (0.52, 0.3), MSF (0.1, 0.2), MST (0.67, 0.12), MTC (0.39, 0.33), MTF (1.16, 2.28), MTT (1, 0.1). COLOURATION . Whole body and appendages brown. HEAD . Head capsule wider than long; anterior margin straight; posterior margin slightly convex anteriad with emargination in front of neck; posterior angles rounded; setation with 1 PCS, PMS in moderately dense row. Epicranium with low-density micropunctuation, setation with 1 pair of FS, 1 pair of OS, and 3 pairs of PFS. Gena with irregular surface, with depression from mandibular base to middle of eye, with 1 OT; socket of mandibular seta umbilicate, sockets of POS with raised edges. Postgena with row of 3 setae in line from eye to gular suture; posterior margin close to gular sutures with 2 setae; gular sutures straight, extended to posterior margin of head; anterior part of gula with 2 rows of setae. Antenna shorter than head and pronotum combined ( Fig. 15A ), moniliform starting from antennomere 5; antennomeres 1–7, 10 and 11 longer than wide, antennomeres 8 and 9 wider than long; tomentose pubescence starting from antennomere 4; antennomere 1 as long as antennomeres 2 and 3 combined, antennomere 3 longer than 2. Labrum tetralobed, with 2 dark thick setae in median line of lobes, central lobes more developed than lateral lobes, emargination deep, V-shaped ( Fig. 15A ; Supp. file 2). Fig. 15. Neolindus parasinuatus 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 = 0.1 mm. THORAX . Pronotum quadrate, with umbilicate micropunctures, 2 paramedial and 2 lateral distinct rows of setae. Basisternum of prosternum triangular, with row of 8 setae on anterior margin, longitudinal ridge, and wrinkled surface. Metasternal intercoxal process with 1 pair of acute long processes. Elytron longer than wide, surface of elytra with punctures in 7–8 longitudinal rows ( Fig. 15A ; Supp. file 2). LEGS . Protibia with 3 well-developed combs of setae, 1 anterior row covering ⅔ of tibia length; mesotibial apical ctenidium only on inner side; outer margin with row of spines; metatarsomere 1 as long as metatarsomere 2, metatarsomere 3 as long as metatarsomere 4 and shorter than 1, metatarsomere 5 as long as metatarsomere 1. ABDOMEN . Male : tergites with sparse micropunctures. Anterior margin of tergite VII with 4 basal canals with elevated margin, posterior margin straight ( Fig. 15B ). Posterior margin of sternite VII straight ( Fig. 15C ). Anterior margin of tergite VIII with 4 internal canals, central canals fused, forming inverted pentagon; posterior margin rounded ( Fig. 15D ). Posterior margin of sternite VIII with wide and shallow midlongitudinal emargination with straight middle part and rounded lateral angles ( Fig. 15E ). Posterior margin of tergite IX with midlongitudinal deep emargination of ¾ of segment length ( Herman 1991 : fig. 192); aedeagus, median lobe rounded at base, with parallel lateral sides, apex on parameral side deeply notched with elongate, blunt-end median hole or cavity. pPMS shell-shaped, triangular, robust, immersed into opening of median foramen. pLS absent. APS flattened, wider than long, shorter than pPMS; 1 pair of inner sclerites attached to pPMS and single, symmetrical, flattened sclerite attached to paired ones ( Fig. 15F–I ). Female : unknown. Distribution The species is known only from the type locality in Colombia (Amazonas, Leticia, Parque Nacional Natural Amacayacu). It was collected by Malaise trap at low altitude.