Fannia tucumanensis Albuquerque, 1957

Dominguez, Martha Cecilia, 2007, A taxonomic revision of the Southern South American species of the genus FANNIA Robineau-Desvoidy (Diptera: Fanniidae), Papéis Avulsos de Zoologia (São Paulo) 47 (24), pp. 289-347 : 340-341

Fannia tucumanensis Albuquerque, 1957

Figs. 21 A-D

Fannia tucumanensis Albuquerque, 1957:2 ; Pont, 1972:6; Albuquerque et al., 1981:10 19 and 22; Carvalho et al., 1993:16; Lopes et al., 1997:8; Carvalho et al., 2003:20.

Diagnosis: Frontal vitta at narrowest point as wide as anterior ocellus. Eye bare. Parafacial bare. Antenna and palpus dark brown. Scutum grey with brown vitta visible along acr, dc and postsutural spal. One pra very near spal, almost indistinguishable from ground setulae. F2 with 1 very long basal pv followed by 2 medial rows of hooked pv, and 5 to 6 rows of same forming a thick ctenidium in apical 1/4. T 2 constricted in basal half, lacking subbasal protuberance. F3 thin, slightly curved, with a weak preapical protuberance on posteroventral surface, and with 1 row of long, thin and hair-like pv and a preapical tuft of long and curled pv, 3 to 4x femoral width. T 3 lacking medial row of ad. Wing clear, slightly light brown-yellowish tinted. Halter yellowish-white. Abdomen heart-shaped, grey-brown pruinose, with yellow markings at base of tergite 1, and in lateral anterior margins of tergites 2-4.

Material examined: Argentina: Tucumán 5 o, Quebrada La Toma , 21-XII-1950, Col. R . Golbach ( FIML). La Rioja 9 o, Dique de Olta , 14-XII-2000, Cols. Domínguez & Roig ( IADIZA) .

Description

Male (female unknown): body length 6-6.75 mm. Head: Frontal vitta covered with light brown shinning pruinescence, at narrowest point as wide as anterior ocellus. Fronto-orbital plate heavy silvery-grey pruinose, at uppermost fr 0.5x width of anterior ocellus. Eye bare, antero-internal facets much larger than remaining. Twelve fr slightly longer than flagellum; pocl of uniform length. Face and parafacial silvery grey; parfacial at base of flagellum 0.8x width of same and bare. Facial carina dark grey. Gena brown-grey. Scape and pedicel light brown, flagellum 2.6x as long as broad, light grey pruinose at base, light brown in remaining. Arista completely light brown, short pubescent. Palpus dark brown, clavate, the apex 3x width of base. Lower oral margin slightly convex and grooveless.

Thorax: Grey with brown vitta visible along acr, dc and postsutural spal; acr vittae reaching scutellum where it is crossed by a transverse line, dc vittae reaching space between fourth and fifth dc, broader anteriorly; apex of scutellum and pleura grey; 3+3 acr, with a fourth acr in apical 1/3 and 1 prescutellar acrs; pprn covered with setulae; 1 pra very near spal, almost indistinguishable from ground setulae; 2 prepm surrounded by 4 to 5 setulae.

Legs: Dark brown, slightly lighter brown at base of tibia, tarsus black. F1 slightly globose (length/width = 5), with 1 row of pd; 2 rows of p; 2 to 3 rows of pv, very short at base and 4 to 5 longer and stouter rows of pv in apical 1/4. T 1 with 1 preapical pd; 1 apical v and pv, lacking medial row of ad. Fore tarsomere 1 0.3x length of T 1, tarsomere 4 very short, as long as broad. F2 with 1 row of ad; 3 rows of very short a; 1 row of av, long at base and shorter towards apex; 1 very long basal pv followed by 2 medial rows of hooked pv, and 5 to 6 rows of same forming a thick ctenidium in apical 1/4; 1 row of hair-like p, spaced at base, stronger and ventrally directed towards apex. T 2 constricted in base half, lacking subbasal protuberance, pubescence on ventral surface shorter than 0.5x tibial width; with 1 submedial and 3 apical a; 1 subapical ad; 1 very long av; 1 submedial and 1 apical pd; 1 apical pv; 1 apical p. C3 with two hair-like setae at apex of posterior surface. F3 thin (length/width = 9.5) slightly curved, with a weak preapical protuberance on posteroventral surface, 1 row of ad dorsally directed towards apex; 1 row of av in basal ¾, longer towards apex and 1 apical av separated from row; 1 row of long, thin and hair-like pv and a preapical tuft of long and curled pv, 3 to 4x femoral width. T 3 with 1 submedial and 1 subapical d; 1 submedial and 1 apical ad, lacking medial row; 5 medial av the last (towards apex) stronger; 1 apical av; ventral and posteroventral surfaces with a weak ctenidium at apex.

Wing: Clear, slightly light brown-yellowish tinted. Lower calypter rounded and upper oval, both white. Knob of halter yellowish-white, stalk and base light brown.

Abdomen: Heart-shaped, tergite 2 2x width of tergite 4. Grey-brown pruinose, with yellow markings at base of tergite 1, and in lateral anterior margins of tergites 2, 3 and 4. Hypopygium not protruding.

Postabdomen: Posterior margin of sternite 5 bilobated and bearing most setae ( Fig. 21A ). Hypandrial arms directed outwards, basal lateral margins grooved; postgonite inconspicuous; aedeagus membranous ( Fig. 21B ). Cercal plate fused; bacilliform process tooth shaped; surstylus broad at base, thin at apex, weakly connected to epandrium ( Figs. 21 C-D).

Distribution: NEOTROPICAL: Northern Argentina: Tucumán, Jujuy and La Rioja provinces.

Figures

FIGURE 21: Fannia tucumanensis Albuquerque.A.Male sternite 5, ventral. B. Male hypandrium, ventral. C. Male terminalia external structures, ventral. D. Male terminalia external structures, lateral.