Fannia dorsomaculata Grisales, Wolff & De, 2012, sp. nov.
Creators: name: Grisales, Diana
name: Wolff, Marta
name: De, Claudio J. B.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Fanniidae
Fannia
Fannia dorsomaculata

description: Fannia dorsomaculata sp. nov.
(Figs. 4, 5, 24, 42, 60, 78, 96, 114)
Diagnosis. these characters apply only to the male sex. Scape brown with apical margin weakly yellowish; pedicel brown with base and apex yellowish; arista brown with base yellowish. Hind femur on ventral surface with preapical protuberance weak, visible on anterior surface, 2 short and weak v, 1 row of av ending in 5 developed setae on protuberance, 1 row of short ad ending in 5 strong d setae; 1 row of long and weak p and 1 row of short pv ending in 2–3 longer setae with hooked apices on protuberance; hind tibia with 1 row of 7 long av in the middle and 1 long and strong apical. Scutum on pre-scutellar area with a light-brown, M-shaped mark.
Description. Holotype male: body length: 7.2 mm; wing length: 6.3 mm.
Head: eye bare. Frontal vitta velvety brown, area posterior to it up to ocellar triangle black. Interocular space 0.16 mm. Fr 14 (Fig. 4). Ocellar triangle black; oc proclinate and developed, one pair of less developed setae and two pairs of weak setulae. Poc parallel. Fronto-orbital plate greyish pollinose, less so posteriorly. Parafacial narrowing ventrally, without short setae and greyish pilose. Gena grey with brownish mark. Lunule brown. Scape brown with apical margin weakly yellowish and 5 short setae. Pedicel brown, brownish pollinose, base and apex yellowish, dorsal setae short. Postpedicel brown, golden-silver pollinose, 3 times the length of pedicel. Arista brown, pubescent and with base yellowish (Fig. 4). Palpus dark brown, flattened and filiform.
Thorax: pleural region grey; scutum dark brown with two grey pre-sutural stripes; mark on pre-scutellar area light-brown, M-shaped, between the second and third dc and acr (Fig. 5); postpronotal, pre-sutural, spal area, intraalar area and area after the M-mark silvery-grey pollinose. Scutellum with brownish mark, apical scutellar area yellowish (Fig. 5). Acr 3:4, unordered. Dc 2:3. Pprn 2, developed and 2 weak. Pra 2, slightly differentiated and subequal in length, seta near suture more dorsal. Prepm with weak ground setulae. Pre-basal scutellar area with short ground setulae. Subapical scutellar setae 2 pairs. Discal scutellar setae 1 pair. Discal area with short and weak setae. Lateral scutellar setae present.
Wing: yellowish, with upper third between veins C and R2+3 darker; base of R1 transparent. Calypters brownish with darkened margins, base of lower calypter whitish. Haltere yellowish with base brownish.
Legs: dark brown, apex of femur, base and apex of tibia slightly yellowish, tarsi dark brown and pulvilli brownish-yellow. Fore femur with 1 row of short and strong d; short v on basal half; 1 long pre-basal pv and 1 row of short and sparse setae ending in 6–10 more developed setae; 1 row of thin p with curved apices; 1 row of pd. Fore tibia with 1 strong pre-apical d; 1 apical v; 1 apical pv. Fore tarsus with strong basal v and 1 long and thin seta on first tarsomere; tarsomere with 1 lateral long and thin v; fifth tarsomere slightly more flattened and widened with respect to the remaining tarsomeres. Mid femur on pre-apical ventral surface weakly constricted; 1 row of long and strong ad; 1 row of av that increase in length and become sparse up to median third, setae on apical third with apex truncate, approximated, short and strong, decreasing in length towards apex; 1 row of short v with hooked apices forming a small ctenidium with the pv row; 1 row of long pv with hooked apices; 1 row of short d on basal third; 1 row of long p with hooked apices ending in 6 setae, apical setae more developed. Mid tibia with constriction on ventral surface, more pronounced pre-basally and medially, apical half setulose, with 3 apical setae, one developed and two short; 1 truncate pre-apical ad; 1 a on edge of apical third and 2 apical, one long and another short; 2 short apical av; 1short pre-apical d; 1 median p, 1 less developed on edge of apical third and 2 short apical; 1 strong apical pv. Hind coxa with 3 long setae on posterior margin. Hind femur on ventral surface with weak pre-apical protuberance (Figs. 24, 42), 2 short and weak setae on protuberance and short setae on basal half; 1 row of av ending at protuberance, with 5 developed setae, on apical third with 2 developed setae (Fig. 24); 1 row of short ad that increase in length towards apex and end in 5 strong d; 2 apical d, one developed and the other short; 1 row of thin and long pd; 1 row of short pv ending on protuberance with 2–3 larger setae with hooked apices (Fig. 42). Hind tibia with 1 developed, long and curved median d and 1 shorter pre-apical d (Figs. 24, 42); 2–3 strong median a and 2 short apical; 1 row of 7 long av on apical half and 1 long and strong apical (Fig. 24). Hind tarsus with fifth tarsomere slightly widened.
Abdomen: yellowish pollinose. Syntergite 1+2 and tergites 3 and 4 with brown median vitta expanding over apical margins, lateral areas between yellow and translucent-brown; tergite 5 dark brown, golden pollinose; syntergite 1+2 with conspicuous lateral setae and one pair of median marginal setae; tergites 3 and 4 with one pair of median marginal setae, and tergite 2 with 2 pairs; tergite 3 with 1 pair of marginal lateral setae, 2 pairs of lateral setae on the right side and 1 pair of lateral setae on the left side; tergite 4 with 1 pair of marginal lateral setae and 1 pair of lateral setae; tergite 5 with 3 pairs of lateral setae and 3 marginal median setae. Sternite 1 inconspicuously setulose with 1–2 thin setae. Sternite 5 as in Fig. 60. Terminalia (Figs. 78, 96): epandrium a little wider than long, with developed setae, particularly on basal half; cercal plate with long, apically round setae; surstylus short, articulated with epandrium, with inner medial expansion, pointed and with short and weak setae apically; rectangular with pointed apex and base with expansion shaped as a hook (cuneiform); hypandrium and associated structures as in Fig. 114.
Female: unknown.
Variation: male: frontal vitta dark brown; 12–14 fr, pedicel with median region and apical margin slightly or strongly yellowish. Scutum light-brown with grey pre-sutural vittae, ending on suture, sometimes weakly visible, or presenting two small anterior marks, or ending on second or third row of acr. Scutellum with area of insertion of apical scutellar setae brownish. Leg with apical margin of femur and basal and apical extremities of tibia weakly yellowish. Fore tarsus on ventral surface of first tarsomere with a thin and long seta. Hind tibia with 1 row of 6–7 long av on apical half and 1 long and strong apical av.
Biology. according to label data, Fannia dorsomaculata sp. nov. is associated with decomposing organic matter in lowland forests.
Comments. these characters apply only to the male sex. Fannia dorsomaculata sp. nov. is morphologically close to F. penicillaris. Fannia differs in the following: general coloration, which is more brownish-grey than black; the brown, M-shaped mark on the posterior region of the scutum; and the hind femur with weak protuberance and without tuft of setae on posteroventral surface, with only 2–3 setae with hooked apices. Both species belong to the heydenii group (Albuquerque et al. 1981).
Etymology. adjective, agreeing in gender with the feminine Fannia. The species epithet refers to the presence of a M-shaped mark on the posterior region of the scutum (from the Latin dorsum = upper surface, macula = mark)
Type material. Holotype male (CEUA). CO [Colombia]. Ant. [Antioquia]. Amalfi. Porce \ Hacienda Normandía. Bosque\ N5˚44’52”W75˚05’6”W\ 1050 m. Alt. [Altitude] / VSR (pescado) [Van Someren–Rydon trap with fish] \ 25 Oct [octubre] 1998. P. Duque CEUA. The holotype is in excellent condition and has all structures. Paratype: CO [Colombia]. Ant. [Antioquia]. Amalfi. Porce \ Hacienda Normandía. Bosque\ N5˚44’52”W75˚05’6”W\ 1050 m. /Alt. [Altitude] / VSR (pescado) [Van Someren–Rydon trap with fish] \ 25 Oct 1998. P. Duque CEUA (3 Males, CEUA; 1 male, DZUP).
Distribution. Colombia: department of Antioquia (Andean region, Central Cordillera).
description: Published as part of Grisales, Diana, Wolff, Marta & De, Claudio J. B., 2012, Neotropical Fanniidae (Insecta, Diptera): new species of Fannia from Colombia, pp. 1-46 in Zootaxa 3591 on pages 12-13, DOI: 10.5281/zenodo.213946