Neolindus triangularis Guzman, Tokareva & Żyła sp. nov.

urn:lsid:zoobank.org:act: 040BF5AB-B5AC-4EFB-BDA4-1163885E5865

Fig. 20; Supp. file 2

Diagnosis

Neolindus triangularis sp. nov. is similar to N. milleri and N. bicornis . nov. in the shape of the median lobe of the aedeagus. However, the aedeagus of N. triangularis differs from that of N. milleri in the structure and composition of apical sclerites (Herman 1991; fig. 189; Fig. 20F–I) and has an acute base of the median lobe with a short median ridge on the parameral side, in contrast to the median lobe of the aedeagus in N. bicornis . Additionally, N. triangularis has noticeably wider fused pLS in the middle part, and a longitudinal invagination in sternite VIII continuing from the middle part of the emargination, limited by 2 ridges on the sides, which is absent in N. bicornis (Figs 4E–I, 20E–I).

Etymology

The name is derived from the Latin noun ‘ triangulus ’ meaning ‘a triangle”, and refers to the form of the median lobe of aedeagus. An adjective.

Type material

Holotype FRENCH GUIANA • ♂; “ Neolindus triangularis Guzman, Tokareva & Żyła 2024 HOLOTYPE [red label] \\ Saül, 7 km N, 0.5 km ESE, Les Eaux Claires, Monts La Fumée; 3°39’46’’N, 53°13’19’’W, 300 m [m a.s.l.]; 4–8 Jun 1997; J. Ashe, R. Brooks Leg.; FGAB97 164; ex: flight interception trap \\ SMO134030 KUNHM-ENT [barcode]”; KUNHM-ENT.

Paratypes FRENCH GUIANA • 1 ♀; “ Neolindus triangularis 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; 26-28 May 1997; J. Ashe, R. Brooks Leg.; FG1AB97 060; ex: flight intercept trap \\ SM0099449 KUNHM-ENT [barcode]”; KUNHM-ENT • 1 ♀; “ Saül, 7 km N, Les Eaux Claires; 220 m; 3°39’46’’N, 53°13’19’’W; 30 May–04 Jun 1997; J. Ashe, R. Brooks Leg.; FG1AB97 144 \\ SM0131297. KUNHM-ENT [barcode]”; KUNHM-ENT .

Description

MEASUREMENTS. BL (7.9), H (0.43,1.06), A (1.43),A1 (0.4, 0.1),A2 (0.11, 0.07),A3 (0.22, 0.08),A4 (0.15, 0.09), A5 (0.15, 0.09), A6 (0.13, 0.09), A7 (0.12, 0.09), A8 (0.12, 0.1), NKW (0.42), GL (0.23), P (0.99, 1.22), E (1.56, 1.47), PC (0.63, 0.31), PF (0.96, 0.28), PT (0.67, 0.12), MSC (0.44, 0.41), MSF (1.1, 0.2), MST (0.76, 0.09), MTC (0.36, 0.31), MTF (1.24, 0.23), MTT (0.83, 0.1).

COLOURATION. Head and pronotum brown; legs light brown; abdomen brown.

HEAD. Head capsule wider than long; anterior margin sinuate, dorsoventrally deflexed, slightly elevated; posterior margin rounded; posterior angles straight; setation with 1 pair of PCS and 1 row of PMS. Epicranium with umbilicate, low-density micropunctuation, setation with 1 pair of FS and 2 pairs of PFS, without OS. Gena with irregular depressions; setation with 1 OT, MS, and POS; sockets of MS and POS 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 5, shorter than head and pronotum combined (Fig. 20A); 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 tetralobed; central lobes well-developed; central emargination shallow, V-shaped (Fig. 20A; Supp. file 2).

THORAX. Pronotum slightly wider than long, with umbilicate randomly distributed micropunctures. Metasternal intercoxal process with 1 pair of acute processes. Elytron longer than wide, surface of elytra with moderately dense umbilicate punctures in 10–11 longitudinal rows (Fig. 20A; Supp. file 2).

LEGS. Protibia with 4 well-developed combs of setae; apical comb longitudinal, composed of widely separated, thin setae; mesotibial apical ctenidium on both sides, inner longer than outer; mesotarsomere 1 longer than mesotarsomere 2, mesotarsomere 2 longer than mesotarsomere 3, mesotarsomere 3 as long as mesotarsomere 4, mesotarsomere 5 as long as mesotarsomere 2; inner ctenidium of metatibia longer than outer. Metatarsomere 1 longer than metatarsomere 2, metatarsomere 2 longer than metatarsomere 3, metatarsomere 3 as long as metatarsomere 4, metatarsomere 5 as long as 2.

ABDOMEN. Tergites with low-density randomly distributed micropunctuation. Posterior margin of tergite VII straight (Fig. 20B). Male: posterior margin of sternite VII with small short midside emargination (Fig. 20C). Posterior margin of sternite VIII with V-shaped midlongitudinal emargination, lateral angles rounded (Fig. 20D). Posterior margin of tergite VIII with median acute elongation, lateral angles slightly lobed (Fig. 20E). Posterior margin of tergite IX with midlongitudinal deep emargination in ¾ of segment length; aedeagus, median lobe acute at base, widening apically and well-sclerotised; with small suture connecting basal acute tip of median lobe with elevated area around basal foramen. pLS fused into flattened arcuate sclerite widening in middle with 2 acute processes on each side protruding distad from median foramen and ending bent to anti-parameral side. APS flattened, arcuate, smaller than pLS, with 2 acute processes on each side protruding distad from median foramen and ending bent to parameral side shorter than processes of pLS. pPMS not visible (Fig. 20F–I). Female: lack of emargination on posterior of sternite VII; posterior margin of tergite VIII sligthtly lobulated.

Distribution

The species is known from the type locality in French Guyana (Saint-Laurent-du-Maroni, Saül, Monts La Fumée), the surrounding forest, and around 130 km SE from the type locality (Cayenne, Matoury). It was collected between 50–300 m a.s.l. using flight interception trap.