Atrichopogon janseni Pessoa & Farias 2021, sp. nov.
Creators: name: Farias, Emanuelle De Sousa
name: Santos, Sanmya Silva Dos
name: Paulino-Rosa, Jokebede Melynda Dos Santos
name: Pessoa, Felipe Arley Costa
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Ceratopogonidae
Atrichopogon
Atrichopogon janseni

description: Atrichopogon janseni Pessoa & Farias sp. nov.
(Figs. 2 A–E; 3 A–C; 4 A–G; 5 A–E; 6 A–E)
Diagnosis. Male. Only extant species of Atrichopogon with pigmented wings in the Neotropical region with gonostylus not forked, spatulate in distal 2/3, with distinct middle notch and quadratic apex. Female. Without good characteristic features: wing with two distinct darker spots; flagellomeres 1–8 more darker than flagellomeres 9–13; genitalia medium brown; spermatheca single, without neck, small and ovoid.
Male. Head brown (Fig. 2A); head width/mouth part length 2.60–2.90 (2.75, n = 2). Ommatidia with interfacet pubescence; broadly abutting medially for length of 3.00–3.40 (3.2, n = 2) ommatidia (Fig. 2D). Antenna medium brown, proportions of flagellomeres as in Figure 2B; flagellomeres 2–10 fused; flagellomeres 1–9 dark brown with well-developed plumes; 10–13 medium brown without plume setae; 9th flagellomere 0.65 times shorter than flagellomere 10; flagellomere 13 with apical projection slightly constricted basally.AR 0.92 (0.92, n = 2). Palpus medium brown (Figs. 2C, E); third segment short to moderately elongated, swollen at mid-length, with well-developed subapical pit; segments 4 and 5 separate. PRIII 2.60 (2.60, n = 2).
Thorax dark brown (Fig. 3B). Scutum with setae arising directly from surface, with lateral suture. Paratergite with one seta. Anepisternum well-developed, broadly bilobed posteriorly. Wing (Fig. 3A) with patch of pigmentation in area of r-m and posterior to apex of R 3; few macrotrichiae on membrane in apical portion of r 3, m 1; wing length 0.80–0.82 (0.81, n = 2) mm. CR 0.63 (0.63, n = 2). Halter pale. Legs yellow brown (Fig. 3C); coxae, trochanter, and basal portion of femora lighter; hind tibial spur shorter than width of hind tibia, hind tibial comb with 9 spines. TRI 3.07 (n = 1), TRII 3.15 (n = 1), and TRIII 2.57 (n = 1); empodia present.
Abdomen brown (Fig. 4A). Segments 1-6 with lateral dark marks. Terminalia dark brown, large (Figs. 4B, C); tergite 9 about 2.5 × as broad as long, not extending to apex of gonocoxite; sternite 9 stout, sub-trapezoidal, with proximal margin broadly concave, distal margin with a row of stout spines (Fig. 4C). Gonocoxite without medial lobe; length 1.80–2.00 (2,80, n = 2) × basal width. Gonostylus (Fig. 4D) with 1/3 proximal side stout; distal 2/3 spatulate; concave with a distinct middle notch, gently curved; apex quadratic, with a discrete concavity in the distal lateral tip; outer tip rounded; inner tip pointed. Aedeagal-parameral complex nearly quadrangular, 2 × as broad as long (Figs. 4 E-G); with curved, sclerotized lateral arms; subapical portion with two lateral triangular teeth-like, and two lateral thin spiniform projections in the centre. Cercus triangular, not reaching the apex of tergite 9.
Female. Similar to male. Head (Fig. 5A); head width/mouthpart length 2.50–2.70 (2.6, n = 2). Eyes broadly abutting medially for length of 2.80–3.00 (2.9, n = 2) ommatidia (Fig. 5C). Antenna with flagellomeres 1–8 dark brown (Fig. 5B); 9–13 medium brown. AR 1.23–1.26 (1.24, n = 2). Mandibles well developed; teeth not visible. Palpus medium brown (Fig. 5D); third segment short to moderately elongated (Fig. 5E), pit at mid-length; segments 4 and 5 separate. PRIII 2.20–2.40 (2.3, n = 2). Thorax dark brown (Fig. 6B). Wing (Fig. 6A) pattern of pigmented membrane as for male; macrotrichiae on membrane in apical portion of r 3, m 1, and apical half of M 1. Wing length 0.85–0.90 (0.87, n = 2) mm. CR 0.62 (0.62, n = 2). Legs as shown in figure 6C. Abdomen brown (Fig. 6D); cercus light brown. Genitalia. One medium brown, small, ovoid, sclerotized spermatheca (Fig. 6E), measuring 85 × 70 (n = 1) μm, without visible neck.
Type material. Holotype, adult male, slide-mounted, labelled as follows: BRAZIL, Amazonas, Presidente Figueiredo, Rio Pardo, 1°49ʹ02.3″ S 60°19ʹ03.5″ W, CDC light trap, Ramal Gusmão, canopy, forest, Pereira-Silva J. Col. VII. 2015 (INPA). Allotype, adult female, slide-mounted, same data as holotype (INPA). Paratypes: 1 male and 1 female, same data as holotype (ILMD).
Etymology. This species is named and described in honor of Jansen Fernandes de Medeiros, a close friend of the authors, medical entomologist, dedicated chairperson, and laboratory leader, who enthusiastically promotes entomological research on biodiversity in the Amazon basin and is largely responsible for the growth and development of another Amazonian FIOCRUZ Unit in Porto Velho, Rondônia.
description: Published as part of Farias, Emanuelle De Sousa, Santos, Sanmya Silva Dos, Paulino-Rosa, Jokebede Melynda Dos Santos & Pessoa, Felipe Arley Costa, 2021, Description of three new species of biting midge of the genus Atrichopogon Kieffer (Diptera: Ceratopogonidae) from Brazilian Amazon, pp. 275-290 in Zootaxa 4952 (2) on pages 277-280, DOI: 10.11646/zootaxa.4952.2.4, http://zenodo.org/record/4674037