Atrichopogon (Atrichopogon) soriai Rossi, Marino & Spinelli, 2025

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, Zoosystema 47 (13), pp. 185-202 : 193-196

publication ID

https://doi.org/10.5252/zoosystema2025v47a13

publication LSID

lsid:zoobank.org:pub:3C03912C-6A32-49F7-A7D7-0C3A5A6E6610

DOI

https://doi.org/10.5281/zenodo.15308699

persistent identifier

https://treatment.plazi.org/id/03E987B9-1E75-FFC8-5978-CB6FFE74B365

treatment provided by

Plazi

scientific name

Atrichopogon (Atrichopogon) soriai Rossi, Marino & Spinelli
status

sp. nov.

Atrichopogon (Atrichopogon) soriai Rossi, Marino & Spinelli , n. sp.

( Figs 5 View FIG ; 6 View FIG ; 8C View FIG ; 9C View FIG )

urn:lsid:zoobank.org:act:9EA13D98-D89B-456A-AE18-E715A76DF63F

TYPE MATERIAL. — Holotype. Peru • ♂; Cuzco, Pagoreni ; VII.2004, J. Williams; light trap; MLPA.

Allotype. Peru • ♀; same data as for holotype.

Paratypes. Peru • 6 ♂, 7 ♀; same data as for holotype .

ETYMOLOGY. — This species is named after a good friend and colleague Saulo de Jesús Soria, in recognition of his wonderful contributions on the Neotropical pollinator species of Ceratopogonidae . DISTRIBUTION. — Atrichopogon soriai Rossi, Marino & Spinelli , n. sp. is known only from the type locality in Kirigueti (11°38’13”S, 73°07’07”W), at elevation of 395 m.

DIAGNOSIS. — Only extant species of Atrichopogon in the New World with pigmented wings, and the fore and midlegs brown and hind leg pale brown.

Description of male ( Figs 5 View FIG ; 8C View FIG )

Head ( Fig. 5A View FIG ). Golden brown. Ommatidia ( Fig. 5B View FIG ) with interfacet spicules, broadly abutting medially for length of 4-5 ommatidia. Antenna with pedicel and flagellomere 1 dark brown, flagellomeres 2-9 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 1.29-1.42 (1.34, n=7). Maxillary palpus ( Fig. 5C View FIG ) pale brown with third segment short, swollen at midlength, with deep sensory pit opening just beyond midlength; segments 4, 5 separate, broadly abutting; segment 5 conical; PR 1.81-2.30 (2.06, n=7). Proboscis short, head width/mouthparts length 2.47-3.13 (2.69, n=7).

Thorax. Dark 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 ( Fig. 5E View FIG ) brown, hind leg paler; fore and midlegs brown except narrow base of midfemur and knees pale brown, tarsi pale brown; hind tibia slightly expanded at apex; hind tibial spur thick, length longer than width of hind tibia at midlength; hind tibial comb with 7-8 spines; prothoracic TR 3.50-4.20 (3.89, n=7), mesothoracic TR 3.14-3.83 (3.60, n=7), metathoracic TR 3.00-3.57 (3.25, n=7); claws curved, bifid at tip; empodia present. Wing ( Fig. 5D View FIG ) with three dark spots, one covering r-m and first radial cell extending to base of m 1 and shortly in m 2, second covering distal 1/3 of wing, remaining one in CuA 2; macrotrichiae on membrane in apical portion of cell r 3; both radial cells well formed, second nearly three × longer than first; wing length 0.82-0.98 (0.89, n=7) mm; width 0.32-0.40 (0.34, n=7) mm; CR 0.65-0.69 (0.68, n=7). Halter whitish.

Abdomen. Tergites 1-7 light brown, 8 amber brown, genitalia amber brown. Genitalia ( Figs 5F View FIG ; 8C View FIG ) of moderate size, segment 9 about equal in width to segment 8.Tergite 9 short, not extending to apex of gonocoxites, posterior margin rounded; sternite 9 narrow, posterior margin broadly concave, with two lateral sclerotized conical teeth, and row of 8 scattered setae. Gonocoxite moderately stout, without medial lobe, twice as long as greatest breadth. Gonostylus tapering from base, 0.9 length of gonocoxite, nearly straight, apex darker, pointed. Aedeagal-parameral complex broad, composed only of ventral portion; basal arch strongly sclerotized, deeply concave; lateral arms directed laterally; posterolateral margins convex; posteromedial prong triangular, tip blunt. Cercus somewhat elongate, apressed against lateral margin of tergite 9.

Female adult ( Figs 6 View FIG ; 9C View FIG )

Head. As for male, with following differences: flagellum light brown, proportions of flagellomeres as shown in Figure 6A View FIG ; flagellomeres 1-8 longer than broad, vasiform, flagellomeres 9-13 elongated; AR 1.53-2.23 (1.69, n = 8). Maxillary palpus ( Fig. 6B View FIG ) with third segment slender, with deep sensory pit opening near midlength; segments 4, 5 separate, their combined length slightly longer than third segment; PR 1.91-2.40 (2.11, n =8); head width/ mouthparts length 2.63-3.33 (2.88, n= 8). Mandible poorly developed, without teeth.

Thorax. Legs with hind tibial comb with 8-9 spines, prothoracic TR 3.33-4.20 (3.93, n = 8), mesothoracic TR 3.14-4.00 (3.66, n = 8), metathoracic TR 3.00-3.57 (3.29, n =8); claws curved, not bifid at tip. Wing ( Fig. 6C View FIG ) with the same pattern of pigmented membrane, with many macrotrichiae on cells r 3, m 1; scarce on m 2, radial cells narrow, second four × longer than first; wing length 0.88-0.98 (0.93, n=8) mm; width 0.38-0.42 (0.40, n=8) mm; CR 0.65-0.74 (0.69, n = 8).

Abdomen ( Fig. 6D View FIG ). Tergites 1-6 pale brown with lateral patches darker, segment 7 uniformly yellowish brown, segments 8-10 dark brown. Sternite 7 rectangular. Sternite 8 without elongate cuticular extensions, posterior margin nearly straight. Sternite 9 ( Fig. 6E View FIG ; 9C View FIG ) stout, truncate anteriorly, not joined medially. One spermatheca ovoid with short neck, sclerotized, measuring 0.070 -0.090 (0.076, n=8) by 0.050 -0.080 (0.061, n=8) mm. Cercus dark brown.

REMARKS

Of the Neotropical species with distinctive pigmented wings, Atrichopogon soriai Rossi, Marino & Spinelli , n. sp. is the only one showing the hind leg paler than fore and midlegs.

The new species is similar to A. maculipennis on the basis of its distinct pattern of pigmentation of the wing, which possesses two transverse dark bands, one straddling r-m to CuA 2 and other covering the distal 1/3 of the wing. However, in A. soriai Rossi, Marino & Spinelli , n. sp. the dark spot on r-m is clearly separated from CuA 2 by a pale broad area.

The male of Atrichopogon cavus Felippe-Bauer, 2012 from Brazil is also similar to the male of A. soriai Rossi, Marino & Spinelli , n. sp., but the posterior margin of the tergite 9 reaches the apex of gonocoxites, and the female mandible of A. cavus is armed with 15 teeth.

By virtue of the general features of the male genitalia, A. soriai Rossi, Marino & Spinelli , n. sp. is similar to Atrichopogon delecollei Rossi, Marino & Spinelli , n. sp. from Peru. Differences between the two species may be found in the Remark paragraph under the latter species.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Ceratopogonidae

Genus

Atrichopogon

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