Leptoconops nigrithorax Gonzalez & Tanase 2026, sp. nov.

Le résumé fourni par la source

Leptoconops nigrithorax González & Tanase sp. nov. Fig. 1, Suppl. material 1: figs S 1 – S 6 Material examined. Holotype: SPAIN • ♀; Las Pachecas, Cádiz; 36.590805, -6.098175, alt. 61 m; 29 May 2023; M. A. González leg.; BGS trap; EBD I-016375. Paratypes: SPAIN • 1 ♀; labelled as for the holotype, except for EBD I-016376 - 3 ♀; labelled as for the holotype, except for NHMUK 014316789 - NHMUK 014316791 - 2 ♀; Los Palacios, Sevilla; 37.14261, -6.042228, alt. 1 m; 21 Jun 2023; M. A. González leg.; BGS trap; MNCN_Ent 283581. Diagnosis. Leptoconops nigrithorax sp. nov. can be distinguished from other European Leptoconops species by the combination of the following characters: (i) shiny black thorax, visible both dorsally and laterally under a stereomicroscope (Fig. 1 A, B), (ii) uniformly dark brown legs, without pale coloration on tarsomeres (Fig. 1 F – H), and (iii) a higher number of lacinial teeth. In addition, the type and distribution of antennal sensilla also provide useful diagnostic features. Description. Females large (2.06 ± 0.14 mm). Specimens dark, with a shiny black thorax (Fig. 1 A, B, Suppl. material 1: fig. S 1 A, B), brownish abdomen, and uniformly dark-brown legs (Fig. 1 F – H). Head. Subspherical, with dull metallic green tones on clypeus, frons, and vertex (Suppl. material 1: fig. S 1 C, D). Head length: 343.52 ± 7.59 µm; width: 377.61 ± 7.85 µm (Suppl. material 1: fig. S 1 D). Head width is 4.2-4.5 × the interocular distance. Two (occasionally 1) lateral interocular setae present, one each side (Suppl. material 1: fig. S 1 F). Vertex moderately spiculated (400 × magnification) and with 10–12 supraorbital setae arranged in a row (Suppl. material 1: fig. S 1 E). Eyes bare, moderately separated by a diameter of 7.28 ommatidia (85.89 ± 2.67 µm) (Suppl. material 1: fig. S 1 F). Antenna. Pedicel with four setae; flagellomere I has five or six setae. Lengths of flagellomeres I – XII are provided in Suppl. material 1: table S 2. Total antennal length = 388.75 ± 29.39 µm; AR = 0.7. Proximal flagellomeres II – IV are longitudinally flattened, while V – VI vary from flattened to subspherical; distal flagellomeres VII – XI are spherical (Suppl. material 1: fig. S 2 A, B). Terminal flagellomere elongate and similar in length to the preceding three flagellomeres combined: densely setose with three or four sensilla chaetica on the anterior mid-section and one or two minute hyaline ss (Suppl. material 1: fig. S 2 C). Flagellomeres armed with abundant long sensilla trichodea that extend beyond the base of the next segment (sum of both faces): 6–10 on flagellomeres I – IV and 18–22 on flagellomeres V – XI. The sensilla trichodea are arranged in two or three semi-verticils on the external face and in a basal whorl on the internal face (Fig. 1 D). Straight and thick hyaline ss (one pair per flagellomere, II – XI) are diametrically opposite (facing each other), tips reach the base of the next flagellomere (Fig. 1 E). One minute hyaline ss located on one side of flagellomeres II – XI (sometimes variable and / or difficult to see). No sensilla chaetica on flagellomeres except on I (occasionally 1 on II). Mouthparts. Dark brown (Suppl. material 1: fig. S 3 A). Clypeus with four frontoclypeal setae (similar length and thickness) arranged trapezoidally: the anterior pair closer but the posterior pair widely separated (Suppl. material 1: fig. S 1 G). Proboscis (216.98 ± 8.71 µm) shorter than the head. Palps slightly exceed the proboscis tip. Palpus length: 222.57 ± 7.31 µm. PR = 2.06 (1.80–2.32). The first two palpal segments (length: 44.17 ± 7.74 µm) bear three long setae. The third palpal segment (Fig. 1 C) is longer than wide (94.95 ± 4.78 µm and 46.41 ± 6.19 µm), slightly incrassate and with 8–10 setae (3 on outer margin, 2 or 3 in sensory area, and 3 or 4 on inner margin). Sensorium with 35–40 sensory pits arranged in 4–6 irregular rows, covering roughly three-quarters of the surface area. The sensillar area measures 1,500.74 ± 93.06 µm 2. The fourth segment (83.75 ± 1.81 µm) cylindrical, with one or two median setae (usually 1) and 3–5 (usually 4) apical / subapical setae. Lacinia with 22–30 evenly arranged teeth (Suppl. material 1: fig. S 3 B). Mandible is armed with 19–24 teeth (Suppl. material 1: fig. S 3 C). Thorax. Mesonotum polished, shiny black, length 660.10 ± 34.10 µm, width 440.24 ± 10.00 µm (Fig. 1 B, Suppl. material 1: fig. S 4 A, B); setose, with three longitudinal straight rows of dark, distinct setae (1 acrostical and 2 dorsocentral, 14–16 setae per row) (Suppl. material 1: fig. S 4 C, D). Scapular setae are present and a pair of longer prescutellar setae also present. Anterolateral scutal margin with 15–22 scattered setae per side (Suppl. material 1: fig. S 4 D). Lateral thoracic sclerites polished and shiny, often with reddish mahogany tones, especially in clefts (Suppl. material 1: fig. S 4 B). Humeral pits absent or inconspicuous. Katepisternum shiny black, with 8–10 scattered setae on each side. Scutellum pruinose with two pairs of long medial setae (subapical and lateral) of similar length (Suppl. material 1: fig. S 4 E). Post-scutellum strongly arched and bare, with ornamentation and distinct metallic green tones (Suppl. material 1: fig. S 4 F). Halters white apically, with dark basally (Suppl. material 1: fig. S 4 F). Legs. Uniformly dark brown, not shiny (Fig. 1 F – H). Measurements in Suppl. material 1: table S 3. Hindleg (1,896.39 ± 105.81 µm) longer than both foreleg (1,529 ± 50.15 µm) and midleg (1,689.31 ± 77.10 µm). Coxa with six bristles; distal trochanters, basal femur, and tibia possess chordotonal organs (Suppl. material 1: fig. S 5 D). Trochanter surface with 5–7 long, distinctive bristles plus two short straight bristles and 14–16 chordotonal organs (arranged in two groups, 5–7 + 8–10), femur with 12 bristles arranged in two lines (4 + 8), and tibia with three or four (Suppl. material 1: fig. S 5 D). Tarsomeres of legs covered with uniformly fine pilosity; femur and tibia with a variable number of long distinct bristles arranged in rows. Typically, at least two lines of bristles arranged in one row, with the other two or three lines mixed. Both anterior and posterior apical regions of the femur each with two or three additional long bristles. Tibial comb with four spines (outer spines shorter than inner ones) (Suppl. material 1: fig. S 5 A). Apical spines are present on the first (1 or 2, except hind tarsomere, which is variable, having 2–6 strong spines) and second (usually 2) tarsomeres but absent on the third and fourth (variable on the third of the hindlegs). The basitarsus is highly setose in all legs; claws symmetrical, each with a narrow, pointed, moderate-sized basal tooth (Suppl. material 1: fig. S 5 B, C); empodium with a branched bristle. Wing. Length: 1.08 ± 0.01 mm; width: 0.50 ± 0.03 mm; CR: 0.39 (0.38–0.41). Veins are distinct, radial cells highly sclerotized, with yellow tones (Suppl. material 1: fig. S 5 E). Abdomen. Tergites (Suppl. material 1: fig. S 6 A) and sternites (Suppl. material 1: fig. S 6 B) brown to dark brown, pleural membrane with a leathery texture. Ventral setae are abundant on segments 1–5 (> 30), moderate on segments 6 and 7 (15–22), and scarce on segments 8–10 (<15). Two small functional spermathecae of equal size (47.09 ± 3.82 µm × 28.76 ± 3.12 µm and 45.79 ± 4.78 µm × 27.65 ± 2.05 µm), oval, and highly sclerotized, with an inconspicuous uncolored area apically and a short, well-formed neck (5.65 ± 2.05 µm) (Fig. 1 I, J, Suppl. material 1: fig. S 6 D). Two small accessory spermathecae present, one bigger than the other (depending on how placed during preparation; the smallest may be difficult to observe) (Fig. 1 I, J). Genitalia. On sternite VIII the extremities of the lateral arms of the ventral plate are sclerotized, pointed, and membranous at the base (with stretch marks). These arms are orientated horizontally outwards or slightly curved (Suppl. material 1: fig. S 6 C). Ventra

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