Fannia grisalesae, 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 : 198-199

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.7836387
persistent identifier	https://treatment.plazi.org/id/0396A100-C213-EE7D-DDF7-FF04421C1474
treatment provided by	Plazi
scientific name	Fannia grisalesae
status	sp. nov.

Treatment

Fannia grisalesae View in CoL sp. nov.

( Figs 1G View FIGURE 1 , 3G View FIGURE 3 , 4G View FIGURE 4 , 5G View FIGURE 5 , 6G View FIGURE 6 , 12 View FIGURE 12 , 16 View FIGURE 16 )

Diagnosis. Fore tarsomere 2–4 white-yellowish, tarsomere 1 with basal half brown and apical half white-yellowish, tarsomere 5 brown ( Fig. 12D View FIGURE 12 ). Mid basitarsus with basal fourth enlarged and covered with four long and thick curved setae ( Fig. 1G View FIGURE 1 ). Hind coxa bare. Hind femur curved with pre-apical swelling on v surface, with tuft of five long pv setae (three times longer than width of femur) on the swelling, curved apically ( Fig. 12F View FIGURE 12 ). Wing slightly brownish ( Fig. 12C View FIGURE 12 ).

Description. Male. Body length: 6.0 mm. Wing length: 5.5 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. 12A View FIGURE 12 ). Frontal setae 17. 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. 12A View FIGURE 12 ). Pedicel with dorsal seta developed, about one third of length of arista. Postpedicel black, silver pilose.

Thorax. Scutum with four inconspicuous black vittae and inconspicuously silver pruinose on postpronotal and notopleural regions ( Fig. 12B View FIGURE 12 ). Acrostichal setulae triserial presuturally and triserial to quadriserial postsuturally. Dorsocentrals 2+3, long, the posterior-most postsutural pair slightly longer than the others. Prealar 2, anterior one twice longer. Katepisternum with about 15 long and thick setae ventrally ( Fig. 12C View FIGURE 12 ).

Wing. Brownish ( Figs 12B, 12C View FIGURE 12 ). Calypters white. Haltere yellow, the base of stem light brown.

Legs. Light brown. Pulvilli white. Tarsi brown, except for fore tarsomeres 2–4, white-yellowish, tarsomere 1 with basal half brown and apical half white-yellowish. Fore tarsomere 5 with a pair of long d setae (as long as the sum of the length of tarsomeres 3–5). Fore tarsomere 2 enlarged dorsoventrally. Fore tarsomeres 2–4 slightly enlarged laterally. Tarsomeres 1–5 with apical to preapical setulae thicker than the others ( Fig. 12D View FIGURE 12 ). 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. 12E View FIGURE 12 ). 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 and thicker) ( Fig. 12E View FIGURE 12 ). Mid basitarsus with basal fourth enlarged and covered with four long and thick curved setae ( Fig. 1G View FIGURE 1 ); basal fourth twice wider than width of tarsomere. Hind coxa bare on posterior margin. Hind femur curved with pre-apical swelling on v surface, with a tuft of long setae on the swelling, including a set of 2–3 long av setae and 5 long pv setae (the pv setae slightly longer, thicker and apically curled), a row of pv setae reaching v swelling, a surface with a row of setae on basal half, preapical setae only on av ( Fig. 12F View FIGURE 12 ). Hind tibia with 5 median av; 1 apical on a and av ( Fig. 12F View FIGURE 12 ).

Abdomen. Metallic light brown with silver pruinosity, slightly bluish, elongate, with developed setae, tergite 5 with long marginal setae (slightly longer than others). Syntergosternite with two short lateral setae. Sternite 5 rectangular, posterior margin profoundly indented ( Fig. 3G View FIGURE 3 ).

Terminalia. Surstyli fused with epandrium. Surstyli slightly curved apically, with medial projection directed outward ( Fig. 4G View FIGURE 4 , 5G View FIGURE 5 ). Bacilliform process long and simple, as long as half of length of surstyli ( Fig. 4G View FIGURE 4 ). Hypandrial arms directed outwards ( Fig. 6G View FIGURE 6 ).

Female. Unknown.

Etymology. Name in apposition. This species is named in honor of Dr. Diana Lucia Grisales Ochoa, an entomologist who has significantly contributed to the Neotropical knowledge of Fanniidae .

Type-material. Holotype. Male. Mexico. Tlaxcala. Nanacamilpa, Piedra Canteada, 19°27′23′′N, 98°36′01′′W, Trampa aérea 3, 9.vi-13.vii.2019, Nuple, E. ( CNIN). GoogleMaps

Distribution. Mexico (Tlaxcala).

Remarks. F. grisalesae is unique among the Fannia pretiosa group from Mexico in having the fore basitarsi brown basally and yellow apically.