Leptoconops triangularis Gonzalez & Tanase 2026, sp. nov.

Résumé fourni par la source

Leptoconops triangularis González & Tanase sp. nov. Fig. 3, Suppl. material 1: figs S 7 – S 12 Material examined. Holotype: SPAIN • ♀; Pago del Humo, Cádiz; 36.417118, -6.090697; alt. 11 m. 06 Jun. 2024; M. A. González leg.; BGS trap; EBD I-016377. Paratypes: SPAIN • 1 ♀; labelled as for the holotype, except for EBD I-016378 - 1 ♀; La Canaleja, Cádiz; 36.425053, -5.9079281; alt. 54 m; 6 Jun 2024; M. A. González leg.; BGS trap; MNCN_Ent 283582 - 1 ♀; Vejer de la Frontera, Cádiz; 36.282130, -5.963067; alt. 59 m; 6 Jun 2024; M. A. González leg.; BGS trap; NHMUK 014316788 - 1 ♀; Écija, Sevilla; 37.448530, -5.1076545; alt. 183 m; 18 Jun 2024; M. A. González leg.; BGS trap; NHMUK 014316787 - 1 ♀; Écija, Sevilla; 37.448530, -5.1076545; alt. 183 m; 18 Jun 2024; M. A. González leg.; BGS trap; MNCN_Ent 283583 - 1 ♀; Vejer de la Frontera, Cádiz; 36.282130, -5.963067; alt. 59 m; 6 Jun 2024; M. A. González leg.; BGS trap; MNCN_Ent 283584. Diagnosis. The abdominal terga possess characteristic sharply defined, black triangular spots that are large on segments I – IV but become progressively smaller and more diffuse towards the apex (segments V – VII) (Fig. 3 B). This character is unique among the Leptoconops species recorded in the Western Palearctic. Description. Females medium-sized (1.63 ± 0.10 mm). Thorax dorsally pruinose with green metallic reflections; abdomen pale cream to light brown (almost orange), with distinctive black triangular spots on the tergites; legs bicolored (Fig. 3 A, B, Suppl. material 1: fig. S 7 A, B). Head. Subspherical, dull-pruinose dark with metallic-green tones on the clypeus, frons, and vertex (Suppl. material 1: fig. S 7 C, D). Head width (445.12 ± 43.02 µm) exceeds head length (372.30 ± 34.55 µm) (Suppl. material 1: fig. S 7 D). Head width 4.3 × (4.1–4.6) the interocular distance. Two lateral interocular setae present (one per side) that are sometimes hard to see (Suppl. material 1: fig. S 7 E). Vertex moderately spiculated under 400 x magnification and have 8–10 setae aligned in a row, four setae within the upper interocular space. Eyes bare, separated by the diameter of 8 ommatidia (102.68 ± 14.35 µm) (Suppl. material 1: fig. S 7 D, E). Antenna. Pedicel usually with three setae; flagellomere I has six setae (4 + 2). Lengths of flagellomeres I – XII are provided in Suppl. material 1: table S 2. Total antennal length = 485.68 ± 17.92 µm; AR = 0.68. Proximal flagellomeres II – IV longitudinally flattened, V subspherical, and VI – XI becoming progressively spherical (Suppl. material 1: fig. S 8 A). Terminal flagellomere elongate, similar in length to the preceding 2–2.5 segments combined, densely setose, with various minute hyaline ss and four or five sensilla chaetica (1 apical, 1 basal, and 3 beyond the mid-section) (Fig. 3 D, Suppl. material 1: fig. S 8 B). Antenna with 8–14 sensilla trichodea arranged in two or three semi-verticils on both faces of each flagellomere (Suppl. material 1: fig. S 8 C). Distinctive and conspicuous sensilla chaetica present on one face: three or four long and curved on flagellomeres I – VIII, and one or two entirely straight on flagellomeres IX – XI (Suppl. material 1: fig. S 8 D). Minute hyaline ss arranged on the distal third in variable numbers (2–5 per flagellomere). A pair of thin hyaline ss present on flagellomeres I – XI, situated sub-laterally on one face, curved beyond mid-length, and proximate (Fig. 3 E, Suppl. material 1: fig. S 8 E). Mouthparts. Dark brown. Clypeus setae with the same configuration as the previous species (Suppl. material 1: fig. S 7 F). Proboscis 204.27 ± 18.49 µm, shorter than head length. Palps slightly protrude beyond the proboscis tip; total palpal length 226.83 ± 19.83 µm; PR = 1.56 (1.40–1.70). First two palpal segments (length 44.36 ± 11.51 µm) each with three long setae. Third segment (Fig. 3 C) large and moderately incrassate, markedly longer than wide (97.25 ± 4.28 µm and 62.43 ± 5.01 µm), with 6–11 setae (2–4 on the outer margin, 2–4 in sensory area, and 2 or 3 on the inner margin). Sensorium with 70–85 sensilla arranged in 6–8 irregular rows, occupying ~ 3 / 4 of surface with sensory pits; sensillar area 1,755.57 ± 35.31 µm 2. Fourth segment (85.21 ± 8.31 µm) cylindrical, with one or two median setae (usually 1), one or two subapical setae (usually 1), and two or three apical setae (Fig. 3 C, Suppl. material 1: fig. S 9). Lacinia has 21–24 teeth, typically curved apically (Suppl. material 1: fig. S 9). Mandible armed with 15–20 teeth (Suppl. material 1: fig. S 9). Thorax. Mesonotum pruinose with green or greyish reflections, depending on light, length 553.75 ± 30.08 µm, width 451.66 ± 35.16 µm (Suppl. material 1: fig. S 10 A). Mesonotum bears brown setae arranged in three longitudinal rows (one acrostical and two dorsocentral), and with scattered setae antero- and post-laterally. Three distinctive supraalar setae present on each side. Humeral callus prominent with angular edges (Suppl. material 1: fig. S 10 A). Humeral pits consisting of three or four small, rounded black spots aligned anteriorly, with an additional group of three or four black pits centrally in the prescutellar area (Suppl. material 1: fig. S 10 B, C). Anepisternum without setae; katepisternum pruinose with 8–10 scattered setae on each side. Scutellum pruinose with two (subapical and lateral) or three (1 subapical and 2 lateral, the outer lateral pair shorter) pairs of setae. Post-scutellum strongly arched, pruinose, and bare. Halters yellow apically and dark basally (Suppl. material 1: fig. S 10 B). Legs. Bicolored, with alternating dark and pale patterns. Measurements in Suppl. material 1: table S 3. Foreleg (1,545.09 ± 58.79 µm) and midleg (1,628.80 ± 124.13 µm) shorter than hindleg (2,066 ± 98.10 µm). Femur and tibia uniformly dark brown. Foreleg tarsomeres: first bicolored (three-quarters dark, one quarter pale), others uniformly dark (Fig. 3 F). Midleg and hindleg tarsomeres: first and second pale except for dark apical tips; others uniformly dark (Fig. 3 G, H). Trochanter, femur, and tibia bear 12–14 (2 groups), 10–12 (basal region, usually 8 + 4), and three or four (basal region), respectively, chordotonal organs. Trochanter with eight bristles (6 distinctive and long, 2 weak, closely positioned, straight). Leg surface with fine pilosity and 3–5 rows of setae arranged in a row or irregularly. Apical regions of femur and tibia have additional long bristles. Tibial comb with four spines, the central two equal in size (largest), the outer two smaller and unequal (Fig. 3 K, Suppl. material 1: fig. S 11 A). Hind basitarsus highly setulose. Apical spines present on the first (1 spine) and second (1 spine) tarsomeres of foreleg, on first, second, third, and fourth (1 or 2 spines each) tarsomeres of midleg, and on first (2–4 spines), second (2 spines), third (1 or 2 spines), and fourth (variable) tarsomeres of hindlegs. Claws similar on all legs, slightly undulate in profile, symmetrical, each with a thick, pointed basal tooth and a bristle arising from its base (Suppl. material 1: fig. S 11 B, C). Empodium with a branched bristle. Wing. Length 1.14 ± 0.09 mm; width of 0.46 ± 0.02 mm, CR: 0.43 (0.39–0.53). Veins distinct; radial cells highly sclerotized and yellowish (Suppl. material 1: fig. S 11 D, E). Abdomen. Tergites and sternites pale fawn to pale brown. Tergites 1–4 with well-defined triangular black spots (Fig. 3 B). Ventral setae more abundant on segments 1–5 (> 30), moderately numerous on segments 6 and 7 (15–25), and less abundant on segments 8–10 (<16). The two functional elongate spermathecae are nearly equal in size (74.54 ± 6.3 × 22.29 ± 2.03 µm and 70.71 ± 3.65 × 45.76 ± 1.53 µm), highly sclerotized, and have a discolored apical region (minute yellow spots), and a distinct tronco-conical sclerotized neck (9.89 ± 1.26 µm) (Fig. 3 I, J, Suppl. material 1: fig. S 12 A, D). A small, rudimentary third spermatheca is present (Suppl. material 1: fig. S 12 A). Genitalia. Sternite VIII

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.