Fannia anguliseta, Gomes & Pedraza-Lara, 2023

Gomes, Lucas R. P. & Pedraza-Lara, Carlos, 2023, Fannia pretiosa-group (Diptera: Fanniidae) from Mexico: six new species from the Mexico Transition Zone and an identification key, Zootaxa 5264 (2), pp. 185-204 : 190-193

publication ID	https://doi.org/ 10.11646/zootaxa.5264.2.2
publication LSID	lsid:zoobank.org:pub:97A03469-519D-49D7-8D0E-2F6648CCB922
DOI	https://doi.org/10.5281/zenodo.7836365
persistent identifier	https://treatment.plazi.org/id/0396A100-C21B-EE7B-DDF7-F92C40D61570
treatment provided by	Plazi
scientific name	Fannia anguliseta
status	sp. nov.

Treatment

Fannia anguliseta View in CoL sp. nov.

( Figs 1D, 1E View FIGURE 1 , 3C View FIGURE 3 , 4C View FIGURE 4 , 5C View FIGURE 5 , 6C View FIGURE 6 , 8 View FIGURE 8 , 16 View FIGURE 16 )

Diagnosis. Fore tarsomere 1–4 white-yellowish, tarsomere 5 brown ( Fig. 8D View FIGURE 8 ). Mid basitarsus enlarged ventrally ( Fig. 8F View FIGURE 8 ). Hind coxa bare ( Fig. 1D View FIGURE 1 ). Hind femur slightly curved with pre-apical swelling on v surface, with a tuft of long pv setae (twice longer than width of femur) on the swelling, becoming shorter towards the base, and connected to a row of pv setae which reaches the femur base. Wing brownish ( Fig. 8B View FIGURE 8 ). Syntergosternite with 5 long lateral setae (the two most dorsal are curved and twice longer than sternite 5) ( Fig. 1E View FIGURE 1 ).

Description. Male. Body length: 6.2 mm. Wing length: 6.0 mm.

Head. Eye short and sparsely setulose. Ocellar triangle dark brown; ocellar setae proclinate and developed (as long as frontal setae). Frontal vitta velvety brownish to black with silver pruinosity, at the narrowest point twice wider than width of anterior ocellus ( Fig. 8A View FIGURE 8 ). Frontal setae 18. Fronto-orbital plate dark brown to black with silver pruinosity. Parafacial bare, brownish with silver pruinosity. Frontogenal suture and gena silver pruinose. Gena brownish to black ( Fig. 8A View FIGURE 8 ). Pedicel with dorsal seta developed, about one third of the length of arista. Postpedicel black, silver pilose.

Thorax. Scutum without vittae, with inconspicuous silver pruinose on postpronotal and notopleural regions ( Fig. 8B View FIGURE 8 ).Acrostichal setulae triserial presuturally and triserial to quadriserial postsuturally. Dorsocentrals 2+3, long, posterior-most postsutural pair slightly longer than the others. Prealar 2, anterior one slightly longer. Katepisternum with about 10 long and thick setae ventrally ( Fig. 8C View FIGURE 8 ).

Wing. Brownish ( Figs 8B, 8C View FIGURE 8 ). Calypters basally white and apically light brown. Haltere brown with stem light brown to yellow.

Legs. Light brown. Pulvilli light brown. Tarsi brown, except for fore tarsomeres 1–4, white-yellowish ( Fig. 8D View FIGURE 8 ). Fore tarsomeres 1 and 2 slightly enlarged laterally. Fore tarsomeres 5 with 3 long d setulae. Mid femur with 1 row of ad to d setae, with 1 row of decreasing av from base to apex; 1 row of long p and pv setae (thicker on the apical third) ( Fig. 8E View FIGURE 8 ). Mid tibia with 1 submedian ad, 1 median pd, 1 strong and long preapical d, 1 apical seta on a, ad, p, pv, and v (v longer, similar to d preapical seta) ( Fig. 8E View FIGURE 8 ). Mid basitarsus enlarged ventrally ( Fig. 8F View FIGURE 8 ). Hind coxa bare on posterior margin ( Fig. 1D View FIGURE 1 ). Hind femur slightly curved with pre-apical swelling on v surface, with a tuft of long setae on the pv surface which continuous in a row decreasing in length basally, 3 long preapical ad setae, 1 row of av setae (absent on the pre-apical swelling), 1 long preapical av setae, 1 short preapical ad and pd ( Fig. 8F View FIGURE 8 ). Hind tibia with 2 median av; 1 submedian ad; 1 apical av ( Fig. 8F View FIGURE 8 ).

Abdomen. Metallic light brown with silver pruinosity, elongate, with developed setae, tergite 5 with long marginal setae (slightly longer than others). Syntergosternite with 5 lateral setae, the two most dorsal are curved and twice longer than sternite 5 ( Fig. 8C View FIGURE 8 ). Sternite 5 rectangular, twice wider than its length, posterior margin profoundly indented ( Fig. 3C View FIGURE 3 ).

Terminalia. Surstyli fused with epandrium. Surstyli curved apically ( Fig. 4C View FIGURE 4 , 5C View FIGURE 5 ). Bacilliform process long and simple, as long as half of the surstyli ( Fig. 4C View FIGURE 4 ). Hypandrial arms directed outwards ( Fig. 6C View FIGURE 6 ).

Female. Unknown.

Etymology. The specific name is derived from the Latin words anguli- (“apex”) and seta (“bristle”), it refers to the long setae in the apex of the abdomen (syntergosternite).

Type-material. Holotype. Male. Mexico. Hidalgo. Parque Ecológico El Chico, Mineral El Chico , 20°10′58′′N, 98°43′04′′W, 9.vi-16.vii.2019, Trampa aérea 5, Nuple, E. ( CNIN) GoogleMaps . Paratypes. Same as holotype, 2 males ( CNIN; CARF, CPL2943 ) GoogleMaps ; same as holotype, except: trampa aérea 3, 16.vii.2019, 1 male ( CNIN) GoogleMaps . Tlaxcala. Nanacamilpa, Piedra Cantada , 19°27′23′′N, 98°36′01′′W, Trampa aérea 2, 13.vii.2019, Nuple, E., 1 male ( CARF, CPL2925 ) GoogleMaps .