Atrichopogon (Atrichopogon) delecollei Rossi, Marino & Spinelli 2025, n. sp.
Creators: name: Rossi, Juan Francisco
name: Spinelli, Gustavo Ricardo
name: Hochman, Sabrina Ivanne
name: Marino, Pablo Ignacio
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Ceratopogonidae
Atrichopogon
Atrichopogon delecollei

description: Atrichopogon (Atrichopogon) delecollei Rossi, Marino & Spinelli, n. sp.
(Figs 7; 8D)
urn:lsid:zoobank.org:act: 5DB181CA-FA83-49C8-A03D-2D18805429DB
TYPE MATERIAL. — Holotype. Peru • ♂; Cuzco, Kirigueti; VII.2004, J. Williams; light trap; MLPA.
ETYMOLOGY. — This species is named after Jean Claude Delècolle in recognition of his valuable contribution to ceratopogonid taxonomy.
DISTRIBUTION. — Atrichopogon delecollei Rossi, Marino & Spinelli, n. sp. is known only from the type locality in Kirigueti (11°38’13”S, 73°07’07”W), at an elevation of 395 m.
DIAGNOSIS. — Male: only extant species of Atrichopogon in the New World with pigmented wings with the thorax dark brown except ventral portion, most of pleura and legs light brown, abdominal segments 1-3 and 5-6 light brown with dark patches laterally, posterodorsal prong of aedeagal-parameral complex slender and notched apically. Female unknown.
DESCRIPTION
Male (Figs 7; 8D)
Head (Fig. 7A). Golden brown. Ommatidia (Fig. 7B) with interfacet spicules, broadly abutting medially for length of five ommatidia. Antenna with pedicel, flagellomeres 1-9 and basal half of 10 pale brown, distal half of 10, 11-13 slightly darker with plume setae well developed, flagellomeres 2-10 at least partially fused, flagellomere 9-10 with plume setae, 11- 13 elongated, 10 slightly longer than 1-9; flagellomere 13 with apical nipple, not basally constricted; AR 1.44. Maxillary palpus (Fig. 7C) pale brown with third segment moderately elongated, swollen for basal 3/4, with deep sensory pit opening just beyond midlength; segments 4, 5 separate, broadly abutting; segment 5 conical; PR 2.30. Proboscis short, head width/mouthparts length 2.55.
Thorax (Fig. 7E). Dorsal portion and anepisternum dark brown, ventral portion and most of pleura light brown. Scutum with setae arising directly from surface, not in pits; with lateral suture. Paratergite with one stout seta. Anepisternum well developed, broadly bilobed posteriorly. Legs light brown with basal portion of mid and hind femora, coxae paler; hind tibia slightly expanded at apex; hind tibial spur thick, length longer than width of hind tibia at midlength; hind tibial comb with 6-8 spines; prothoracic TR 4.29, mesothoracic TR 4.25, metathoracic TR 3.50; claws curved, bifid at tip; empodia present. Wing (Fig. 7D) with two distinct dark patches in area of r-m and in cell r 3 posterior to apex of R 3; without macrotrichiae; both radial cells well formed, second nearly five × longer than first; wing length 1.06 mm; width 0.34 mm; CR 0.68. Halter whitish.
Abdomen (Fig. 7F). Segments light brown with lateral margins darker on segments 1-3 and 5-6, segments 7-8 amber brown. Genitalia (Fig. 8D) of moderate size, dark brown; segment 9 about equal in width to segment 8. Tergite 9 short, not extending to apex of gonocoxite, posterior margin rounded; sternite 9 narrow, posterior margin broadly concave with scattered row of 10 setae along margin of concavity, few setae on lateral margins. Gonocoxite moderately stout, without medial lobe, 1.8 × longer than greatest breadth. Gonostylus paler, tapering from base, 0.8 length of gonocoxite, slightly curved, apex pointed. Aedeagal-parameral complex (Fig. 7G) broad with rounded posterolateral margins, rounded posteroventrally, posterodorsal prong slender, notched apically, lateral arms directed posterolaterally. Cercus elongate, ventral to tergite 9.
Female
Unknown.
REMARKS
The male genitalia of this new species is similar to Atrichopogon soriai Rossi, Marino & Spinelli, n. sp. However, A. soriai Rossi, Marino & Spinelli, n. sp. shows a different pattern of wing pigmentation, with the 1/3 distal darker. Besides, in A. soriai Rossi, Marino & Spinelli, n. sp. the pedicel and flagellomere 1 and the fore and mid legs are distinctly darker, and the abdominal segment 1-7 are uniformly pale.
This species is also similar to A. ornatipennis Clastrier, 1987. Similitudes and differences between the species may be found in the key.
description: Published as part of Rossi, Juan Francisco, Spinelli, Gustavo Ricardo, Hochman, Sabrina Ivanne & Marino, Pablo Ignacio, 2025, Four new species of Atrichopogon Kieffer, 1906 (Diptera, Ceratopogonidae) from Peruvian Amazonia and a key of Neotropical species of this genus with pigmented wings, pp. 185-202 in Zoosystema 47 (13) on pages 196-198, DOI: 10.5252/zoosystema2025v47a13, http://zenodo.org/record/15308695