Micropotamia fortuna, Jorge & Carvalho, 2024

Jorge, Stela Costa & Carvalho, Claudio José Barros De, 2024, Description of four new species of the Neotropical Micropotamia Carvalho (Diptera, Muscidae), Zootaxa 5471 (1), pp. 67-82 : 79-82

Micropotamia fortuna sp. nov.

ZooBank: urna:lsid:zoobank.org:act: C61DEFB9-4A25-4D8A-A7DC-C3748C183F62

( Figs. 3 , 8 , 16 , 24 , 32 , 40 , and 44)

Diagnose. Three pairs of frontal setae, 1st and 3rd pairs strong; 1 supra-alar setae; 2 post-supra-alar setae; anepisternum with 7 setae; hind femur swollen, AV surface with 6 strong setae aligned on apical third, ventral face with 5 setae on apical third, 3rd and 4th setae curved at apex; hind tibia on the A surface with 1 preapical seta.

Description. Male (holotype): length: body: 3 mm, wing: 3 mm.

Coloration. Head. Fronto-orbital plate with back background color and grayish pruinosity. Antenna brownish. Arista brownish. Lunule brownish. Thorax black with brownish pruinosity. Wings hyaline. Fore and mid tibiae brown.

Thorax. Intra-alar setae 1+2. Postpronotal lobe with 2 setae. Katepisternal setae 1+2, with setulose area.

Legs. Mid femur on AD surface with series of strong setae reaching limit of apical third and 1 strong preapical seta, V surface with series of long and spaced setae, PD surface with 2 preapical setae, PV surface with series of long setae on femur, reduced at base and apex. Tibia on A and PV surfaces without strong setae, PD surface with 1 apical seta. Hind femur swollen, D surface with 1 preapical seta, A surface without strong setae, P surface without strong setae, PD surface with 1 preapical seta; tibia on AD surface with 1 median seta and 1 preapical seta, V and PV surfaces without strong setae.

Abdomen. Fifth sternite rectangular on anterior margin, concave on posterior margin with extensions forming acute angle, shallow medially ( Fig. 24 ). Terminalia. Cercal plate rounded externally on posterior margin ( Fig. 32 ). Surstyli with a notch, curved towards center of cercal plate ( Fig. 32 ). Phallus straight and long, tapered near apex, pregonite triangular with 1 seta, distiphallus bifurcated with denticles on membrane ( Fig. 40 ).

Female. Differs from male in the following: mid femur on V and PD surfaces without strong setae; mid tibia on A and PV surfaces with 1 apical seta, PD surface without strong setae. Hind femur not swollen, AV surface with 3 setae on apical half, V surface without strong setae, PV and P surfaces with 1 preapical seta, PD surface without strong setae. Terminalia. Seventh sternite trapezoidal, 8th sternite long ( Fig. 44b ). Hypoproct rounded at apex ( Fig. 44b ). Cerci digitiform ( Fig. 44 ).

Considerations. Holotype with thorax pierced by the pin, which made it impossible to visualize the post-sutural acrostichal setae. Terminalia dissected and placed in a micro tube with glycerin, pinned together with the specimen.

Material examined. Holotype ♂. COSTA RICA. Prov. Punta[renas]: Est. La Casona, R. B. [Reserva Biológica] Monteverde, 1520m. 11–17 Feb 1993. N. Obando, G. Barbosa. A. Pound, [22.532500, -44.9700]. #2674 ( INBIO).

Paratypes. COSTA RICA. Prov. Punta[renas]: 1 ♀, Est. La Casona , R . B. [Reserva Biológica] Monteverde , 1520m. 11–17 Feb 1993. N. Obando, G. Barbosa. A. Pound, [25.32500, -44.9700]. #2674 ( INBIO) ; BRASIL. Amazonas: 1 ♀. Rio Nhamundá , Ig. Areias. [-1.351100, -57.373400]. 25m. 17–20.v.2008. J. A. Rafael e equipe. Malaise ( INPA) .

Etymology. The specific epithet, fortuna , refers to the second name of the country of origin of the holotype (from Latin: fortuna = fortunate, rich), Costa Rica. Agrees in gender with the feminine Micropotamia .

Distribution

The Micropotamia species are widely distributed; however, there are extensive geographical areas with little or no collection records. Previously, Micropotamia species were distributed in the following regions in Brazil ( M. amazonica : Amazonas and Roraima; M. cilitibia : Mato Grosso do Sul, Rio de Janeiro, and Rio Grande do Sul; M. minuscula : Minas Gerais, Rio de Janeiro, Rio Grande do Sul, and São Paulo) and Mexico ( M. fuscisquama : Guerrero) ( Fig. 45A ) ( Löwenberg-Neto & de Carvalho 2013). This contribution has broadened the known distribution of species in Brazil and Costa Rica, as follows: Brazil: Acre, Amazonas, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Paraná, Rio de Janeiro, Rio Grande do Sul, São Paulo; Costa Rica: Puntarenas Province ( Fig. 45B ).

Figures

FIGURE 45. Geographical distribution of Micropotamia Carvalho, 1993 species. (A) Löwenberg-Neto & de Carvalho (2013); (B) Current geographical distribution.

FIGURES 1–6. (1) Micropotamia minuscula (Albuquerque, 1955), head, lateral view; (2) M. stellaria sp. nov., head, lateral view; (3) M. fortuna sp. nov., hind leg, lateral view, arrow= swollen femur; (4) M. cilitibia (Albuquerque, 1955), hind femur, lateral view, setae on AV surface; (5) M. ditissima sp. nov., hind femur, lateral view, setae on AV surface; (6) M. ditissima sp. nov., hind femur in lateroventral view, setae on V surface. Captions: AV= anteroventral, V= ventral. Scale: 0.5 mm.

FIGURES 7–12. (7) Micropotamia minuscula (Albuquerque, 1955), hind femur, lateral view, setae on AV surface; (8) M. ditissima sp. nov., hind femur, lateral view, setae on AV surface; (9) M. ananas sp. nov., hind femur, posterolateral view, seta on P surface; (10) M. ananas sp. nov., hind femur, lateral view, setae on AV surface; and hind tibia in lateral view, setae on PV surface (calcar); (11) M. amazonica (Albuquerque & Lopes, 1982), hind femur, lateral view, setae on AV surface; and (12) M. stellaria sp. nov., hind femur, lateral view, setae on PV surface; and hind tibia in lateral view, setae on AD surface. Captions: AD= anterodorsal, AV= anteroventral, P= posterior, PV= posteroventral. Scale: 0,5 mm.

FIGURES 13–16. Micropotamia, lateral view: (13) M. stellaria sp. nov., holotype; (14) M. ananas sp. nov., holotype, (15) M. ditissima sp. nov., holotype; (16) M. fortuna sp. nov., paratype. Body length: 3.0–4.0 mm.

FIGURES 21–24. Fifth sternite of male, dorsal view. (21) Micropotamia stellaria sp. nov.; (22) M. ananas sp. nov.; (23) M. ditissima sp. nov.; (24) M. fortuna sp. nov. Scale: 0.1 mm.

FIGURES 29–32. Cercal plate, epandrium, and surstylus, dorsal view. (29) Micropotamia stellaria sp. nov.; (30) M. ananas sp. nov.; (31) M. ditissima sp. nov.; (32) M. fortuna sp. nov. Scale: 0.1 mm.

FIGURES 37–40. Phallus: phallapodeme, pregonite, postgonite, and denticles on membrane, lateral view. (37) M. stellaria sp. nov.; (38) M. ananas sp. nov.; (39) M. ditissima sp. nov.; (40) M. fortuna sp. nov. Scale: 0,1 mm.

FIGURES 41–44. Female ovipositor, (a) dorsal view: tergites 6, 7 and 8, epiproct and cerci, (b) dorsal view: sternites 6, 7 and 8, and hypoproct, respectively. (41) Micropotamia amazonica Albuquerque & Lopes; (47) M. fuscisquama Wulp; (48) M. minuscula; (49) M. fortuna sp. nov. Caption: tg = tergite / eppcrt = epiproct / st = sternite / hyppcrt = hypoproct. Scale: 0,2 mm.