Agenamyia timida de Carvalho, Wolff & Fogaça, 2023

Carvalho, Claudio José Barros De, Wolff, Marta, Haseyama, Kirstern Lica Follmann & Fogaça, João Manuel, 2023, Review of the endemic Neotropical genus Agenamyia Albuquerque (Diptera: Muscidae) with the description of new species from South America, Zootaxa 5346 (5), pp. 532-550 : 545-546

Agenamyia timida de Carvalho, Wolff & Fogaça sp. nov.

ZooBank: https://zoobank.org/NomenclaturalActs/6c903ed7-f6b5-4398-9427-0045ba8702b9

( Figs. 11A–C , 12A–F , 13C , and 14A, F )

Diagnosis. This tiny species is similar to Agenamyia exotica in general appearance but differs in the presence of calypteres, abdomen, and yellowish tarsi.

Measurements: Body length = 3.3 mm. Wing length = 2.7 mm.

Description. Male. Head. Light brown fronto-orbital plate, with five setulae, three stronger. Light brown frontal vita. Light brown parafacial and gena. Short, yellowish, filiform palpus with a slightly enlarged tip. Entirely light brown antennae.

Thorax. Mesonotum dark brown and without stripes. Dorsocentral 1+3, first postsutural smaller than the others. Two postsutural intra-alar, the posterior weaker. Katepisternals 1+1+1 form an equilateral triangle, anterior seta smaller than the remaining seta.

Wings ( Fig. 13C ). Clear without spots. Yellowish calypteres. Lower calypter twice as long as the upper calypter.

Legs. Light yellowish with a slightly black tibia. Hind femur with three av setae in apical half.

Abdomen yellowish, mostly 1–3 tergites ( Fig. 11C ).

Terminalia ( Figs. 12A–F ). Cercus divided into two parts, longer than wide, with a divergent apex: three long setae at the base and four setulae in the middle ( Figs. 12B–C ). Surstylus shorter than cercus ( Fig. 12B ). Hypandrium tubular ( Fig. 12D ). The phallapodeme has the same diameter across its entire extension and was slightly curved at its apex ( Figs. 12D–F ). Large pregonite, equal in length to postgonite. Epiphallus is equal in length to the postgonite. Reduced distiphallus, slightly larger than pregonite, with membranous apex ( Figs. 12D–F ).

Female. Unknown.

Material examined. Holotype ♁. “CO [ Colombia] 05. Sopetrán / Quebrada La Jimenéz, 780 msnm [altitude] / T. [trampa=trap] Emergencia / Ago. [August] 3-1983, M. Wolff / CEUA, 38264 [handwriting]”; “ Holotype [red label]”; Agenamyia / timida / Carvalho J. B. de Carvalho det. 2023 [handwriting]”.

Etymology. The Latin epithet timida refers to a timid fly, as a small fly.

Distribution. Colombia, Antioquia.

Biology. The larvae are aquatic. Adult specimens were collected from Sopetrán, at an altitude of 780 m in a tropical dry forest (bs-T) ( Holdridge 1967).

Remarks. The holotype is in good condition. The terminalia was dissected and placed in a microvial attached to a pin. The left hind leg is broken but is glued to the specimen. Pérez and de Carvalho (2016: 25) indicated this species as the morphospecies Agenamyia sp. 4 .

Figures

FIGURE 11. Agenamyia timida de Carvalho, Wolff & Fogaça sp. nov., male: (A) habitus, lateral; (B) head, frontal; (C) habitus, dorsal. Scale bars: (A, C) 1 mm, (B) 500 µm.

FIGURE 12. Agenamyia timida de Carvalho, Wolff & Fogaça sp. nov., male: sternite 5 and terminalia: (A) sternite 5; (B) epandrium; (C) cercus; (D) terminalia, lateral view; (E) terminalia, frontal view; (F) terminalia, dorsal view. Scale bars: 0.1 mm.

FIGURE 13. Left wing, dorsal view. (A) Agenamyia colombiana de Carvalho, Wolff & Fogaça sp. nov., male; (B) Agenamyia maculata de Carvalho, Wolff & Fogaça sp. nov., male; (C) Agenamyia timida de Carvalho, Wolff & Fogaça sp. nov., male. Scale bars 1 mm.

FIGURE 14. Geographic distribution of Agenamyia species. (A) all species; (B) A. colombiana (black square); (C) A. exotica (blue square); (D) A. fumipennis (yellow square); (E) A. maculata (red square); (F) A. timida (green square). Biogeographic provinces of the Neotropical region (Morrone et al. 2021):Atlantic province (blue region), Cauca province (light brown region), Guatuso-Talamanca province (dark brown region), Magdalene province (green region).