Agenamyia diversa Ramos-Pastrana, Cordoba-Suarez & Fogaca 2024, sp. nov.

Agenamyia diversa Ramos-Pastrana, Córdoba-Suarez & Fogaça sp. nov.

(Figs 1–20)

Diagnosis. Male. Wing with slight prolongation of the wing membrane between R 2+3 and R 4+5 and strong prolongation of the wing membrane between R 4+5 and M veins. A. diversa sp. nov. differs from A. colombiana by the mesonotum dark brown, with scattered brown spots (Figs 2, 4) and legs dark brow except mid and hind tibiae yellowish brown; it differs from other Agenamyia species by the wing prolongation (Fig. 5).

Measurements Male. Body length: 5 mm. Wing length: 5.1 mm (holotype).

Description Male. Head (Figs 1–3). Fronto-orbital plate dark brown, with silvery pruinosity near the base of the antenna and a row of 4 black and stout setae. Frontal vitta dark brown. Parafacial and gena dark brown, with silvery pruinosity. Palpus brown. Antenna dark brown, pedicel lighter than the remaining structures; arista dark brown.

Thorax (Figs 1–2, 4). Mesonotum dark brown, with scattered brown spots. Dorsocentrals 1+3, first postsutural one third smaller than the others. Three postsutural intra-alar setae. Katepisternals 1+1+1 arranged in an equilateral triangle; posterior katepisternal seta about three times longer than the others.

Wing (Fig. 5) Smoky. Dark brown veins. Veins R 2+3 and R 4+5 curved upward, and M slightly straight, apically (Fig. 5). A slight prolongation of the wing membrane between R 2+3 and R 4+5 without brown spots; and strong rounded prolongation of the wing membrane between R 4+5 and M veins, with brown spots (Fig. 5a). Whitish calypters. Lower calypter three times the length of the upper calypter.

Legs (Figs 1–2). Dark brown, except mid and hind tibiae yellowish brown. Fore femur with a row of setae d and v, the d shorter and thickened than v; mid femur with two black and stout pd setae apically; hind femur with a row of black and long a setae, two black and long v setae apically; mid tibia with one black, long and stout p seta medially; hind tibia with one black, long and stout a seta medially.

Abdomen (Figs 1–2, 6). Dark brown, with syntergite 1+2 and tg 3 yellowish in part (Fig. 6). St 5 symmetrical, subdivided on proximal margin, with scattered setae on distal margin (Figs 7–8).

Terminalia (Figs 9–18). Epand rounded, with scattered setae dorsally and laterally (Figs 9–10). Cerc is divided and longer than wide, with parallel apex; covered by many setulae in proximal ⅔ (Figs 11–12). Sur shorter than cerc, with short setae apically (Figs 9–10). Hypd longer than wide, with ventral and dorsal margins straight, proximal and distal margins sinuous (Figs 13–14). Phapod thin, with the same diameter across its entire extension and slightly curved in lateral view (Figs 13–14); inverted funnel-shaped in frontal and dorsal view (Figs 15–18). Pregt longer than pgt (Figs 13–18). Pgt curved, with wide base and membranous apex (Figs 13–18). Epiph slightly longer than pgt, with membranous apex in lateral view (Figs 13–14). Distph slightly rectangular in dorsal view, with membranous apex (Figs 13–18).

Female. Unkown.

Type material. HOLOTYPE ♂: COLOMBIA, Huila, Garzón, Vda.[Vereda] Las Mercedes, Parque Natural Regional Cerro Páramo Miraflores, 02º08′06″N / 75º30′04″W, 2074 m [eters], 8–22. Dic [XII].2022, Y. Ramos-Pastrana Leg. (1 ♂ LEUA-67228) (photographed specimen) / Captura con trampa Malaise en bh-MB [Bosque húmedo montano bajo] (Vegetación secundaria). PARATYPES. idem 22.Dic[XII]. 2022–5.Ene [I].2023 (1 ♂ LEUA-67229); idem 5–19.Ene[I].2023 (1 ♂ LEUA-67230).

Additional material examined. Same data as Holotype, except 24.Nov[XI]–8.Dic[XII].2022 (1 ♂ LEUA-67231).

Etymology. Agenamyia diversa from the Latin ‘ diversus ’ (= diverse) and refers to the strong variation of the wing membrane between R 4+5 and M veins, between the new species and described species of Agenamyia.

Geographical distribution. Colombia (Huila, Garzón) (Fig. 19).

Habitat. The specimens were collected in a Malaise trap placed over a creek in the Low Montane Rainforest with dense secondary vegetation in the Andean-Amazonian transition corridor of Colombia (CAM 2018) (Fig. 20).

Remarks. The additional material examined has these morphological differences: a slight prolongation of the wing membrane between R 2+3 and R 4+5, with brown spots; and a strong square prolongation of the wing membrane between R 4+5 and M veins, without brown spots (Fig. 5b). Despite the fact that we observed morphological differences in the wings of the specimen, our analysis of the genitalia did not reveal any differences that would have allowed us to distinguish the specimens into two species. Additionally, since we only examined one specimen with these characteristics, it is possible that these singular traits result from malformation rather than a possible variation.