Manota flabellata, Hippa, Heikki, Kurina, Olavi & Sääksjärvi, Ilari E., 2017

Hippa, Heikki, Kurina, Olavi & Sääksjärvi, Ilari E., 2017, The genus Manota Williston (Diptera: Mycetophilidae) in Peruvian Amazonia, with description of sixteen new species and notes on local species richness, Zootaxa 4236 (1), pp. 1-40 : 15-17

Manota flabellata sp. n.

Figs 2 A–B, 9 A–D

Male. Colour. Head brown, face somewhat paler. Antenna including scape and pedicel light brown. Clypeus and mouthparts pale yellowish. Thorax brown, medial part of scutum and scutellum somewhat darker. Legs yellowish, apical fourth of hind femur infuscated. Wing with slight brownish tinge; haltere yellow with dark brown knob. Abdomen light brown, medial 2/3 of tergites darker. All setosity pale, yellowish or brownish, the thicker setae seeming darker than the finer ones. Head. Fourth antennal flagellomere 1.4 times as long as broad. Palpal segment 3 of maxillary palpus with apicomedial thumb-like extension, with three apically curved and flattened sensilla; palpomere 4 with parasegment; palpomere 5 about 1.2 times longer than palpomere 4. Nine strong postocular setae. Thorax. Anepisternum with 35–48 setae; anterior basalare, preepisternum 2 and laterotergite non-setose; metepisternum with 6–10 setae along its margin. Legs. Mid- and hind tibial organs absent. Wing. R1 meeting C within the basal half of the costal margin; the sclerotized part of M2 not extending to the level of the tip of R1; wing length 1.5–1.7 mm. Hypopygium. Figs 9 A–D: Sternite 9 laterally fused with gonocoxa, the posterior margin concave, extending to the middle between the base of gonocoxa and gonostylus, anterior margin deeply incised medially, the setae similar to the adjacent ventral setae of gonocoxa. Ventral medial margin of gonocoxa forming a submedial lobe between posterior margin of sternite 9 and the gonostylus. The ventral setae of gonocoxa unmodified except for a narrower and a broader flattened megaseta on the medial margin of the submedial lobe. Posterolateral part of gonocoxa drawn into a broad lobe. Parastylar lobe membranous, concealed under the medial part of gonocoxa, with one seta. No paraapodemal lobe identifiable. Dorsal medial margin of gonocoxa simple. The setae on the dorsal side similar to those on the ventral side. Medially from the dorsal medial margin, on more ventral level with the following four lobes from anterior to posterior: 1) a curved lobe with a long apically flattened and expanded megaseta, 2) a curved lobe with four–five unmodified megasetae apically, 3) a flat subtriangular or subquadrangular lobe that is posteriorly sclerotized, anteriorly membranous, the latter part with a fringe of fine setae at its medial margin, and 4) a conical lobe with one unmodified megaseta and several unmodified setae. Two juxtagonostylar setae present as flattened and dilated megasetae both with two apices; they are widely separated from each other but arising from a common basal body that is as long as the megasetae. Gonostylus largely membranous with crescent-shaped more sclerotized medial part, the latter with one long ventral seta and a small subapical megaseta at the medial margin. Aedeagus broadly subtriangular, with slightly convex lateral sides, the apex curved ventrad, in Fig. 9 C the ejaculatory apodeme visible in the middle. Hypoproct extending posteriorly to the base of gonostylus, medioventrally with a small lobe, the number of ventral setae (sternite 10) ca. 10 on each half. Cerci medially separate, posterior half evenly setose.

Female. Unknown.

Discussion. Manota flabellata belongs to a large group of Neotropical species all of which have 1) a nonsetose laterotergite, 2) the gonocoxa fused laterally to sternite 9, 3) a membranous parastylar lobe, 4) a posterolateral lobe on the gonocoxa, and 5) a similar basic pattern of many megasetae bearing lobes dorsally on the gonocoxa. Within this group M. flabellata is distinguished by the two flattened megasetae on the ventral medial margin of the gonocoxa. Manota flabellata is most similar to M. depilis as both species have the ventromedial margin of the gonocoxa with a submedial lobe, a similar outline of the gonostylus, a flattened and apically dilated anterior most megaseta dorsally on the gonocoxa, and the cercus with rich fine setosity. Manota depilis even has a modified marginal seta on the medioventral lobe of gonocoxal, however, it is single and not conspicuously flattened as the two setae are in M. flabellata .

Etymology. The name is Latin, flabellata , ‘with a fan’, referring to the fan-like lobe dorsally on the gonocoxa.

Types. Holotype. Male, PERU, Department of Loreto, Iquitos area , Allpahuayo , [2] – 16.iv.2000, Malaise trap G2(4), I. E. Sääksjärvi et al. leg. (on slide, UNSM). Paratypes. 2 males, same data as holotype (on slides, IZBE, ZMUT) ; 1 male, same data as holotype except [1]– 15.xii.2000, Malaise trap E1(16) (on slide, UNSM) ; 1 male, same data as holotype except 28.xii.2000 – 16.i.2001, Malaise trap E1(17) (on slide, UNSM); 1 male, same data as holotype except [8]– 22.ii.2000, Malaise trap E3(7) (on slide, ZMUT) ; 1 male, same data as holotype except [1]– 15.x.2000, Malaise trap E3(14) (on slide, IZBE) ; 1 male, same data as holotype except [10]– 24.iii.2000, Malaise trap F2(3) (on slide, ZMUT) ; 1 male, same data as holotype except [4]– 18.viii.2000, Malaise trap F2(11) (on slide, IZBE) ; 1 male, same data as holotype except [6]– 20.ii.2000, Malaise trap G1(1) (on slide, ZMUT) ; 1 male, same data as holotype except [10]– 24.iii.2000, Malaise trap G1(3) (on slide, UNSM) ; 2 males, same data as holotype except 24.iii–16.iv.2000, Malaise trap G1(4) (on slides, IZBE) ; 1 male, same data as holotype except [3]– 17.x.2000, Malaise trap G2(14) (on slide, ZMUT) ; 1 male, same data as holotype except [10]– 28.viii.2000, Malaise trap G3(11) (on slide, IZBE) ; 1 male, same data as holotype except [19.iv] – 3.v.2000, Malaise trap H1(5) (on slide, UNSM); 3 males, same data as holotype except [1]– 15.x.2000, Malaise trap I1 (14) (on slides, IZBE) ; 1 male, same data as holotype except [14]– 28.xii.2000, Malaise trap I2 (17) (on slide, UNSM) ; 1 male, Department of Loreto, Iquitos area, Mishana , 16.xi–1.xii.1998, Malaise trap B1, I. E. Sääksjärvi et al. leg. (on slide, ZMUT) ; 1 male, same data as previous except 16.x–1.xi.1998, Malaise trap B2 (on slide, IZBE) ; 1 male, same data as previous except 16.xii.1998 – 1.i.1999, Malaise trap B2 (on slide, UNSM); 2 males, same data as previous except 16.xii.1998 – 1.i.1999, Malaise trap B3 (on slides, IZBE, ZMUT); 1 male, same data as previous except 1– 16.xii.1998, Malaise trap C1 (on slide, UNSM) ; 1 male, same data as previous except 16.ix–1.x.1998, Malaise trap D1 (on slide, ZMUT) ; 1 male, same data as previous except 16.xi–1.xii.1998, Malaise trap D2 (on slide, IZBE) ; 1 male, same data as previous except 1–16.xii.1998, Malaise trap D2 (on slide, ZMUT) ; 3 males, same data as previous except 16.xii.1998 – 1.i.1999, Malaise trap D2 (on slides, UNSM).

Other material (all in alcohol, IZBE and ZMUT). 1 male, Department of Loreto, Iquitos area, Mishana , 1– 16.x.1998, MT C2, I. E. Sääksjärvi et al. leg. ; 1 male, same data as previous except 16.x–1.xi.1998, MT D1 ; 1 male, Department of Loreto, Iquitos area, Allpahuayo , [19.iv] – 3.v.2000, MT E1(5), I. E. Sääksjärvi et al. leg.; 1 male, same data as previous except [9] – 23.v.2000, MT E3; 1 male, same data as previous except [23.xi] – 1.xii.2000, MT F1; 2 males, same data as previous except 22.v–11.vi.2000, MT H1(7) ; 1 male, same data as holotype except [15]– 29.iv.2000, MT I1 (8) ; 1 male, same data as previous except 1–16.viii.2000, MT I1 (11) ; 1 male, same data as previous except 8–24.iii.2000, MT J2.

Figures

FIGURE 2. Manota flabellata sp. n. A. Habitus, lateral view, scale 0.5 mm. B. Head and thorax, closer view, scale 0.2 mm. anepst = anepisternum, a bas = anterior basalare, cx = coxa, fc = face, flgm = flagellar segment, hlt = halter, ltg = laterotergite, mtepst = metepisternum, ped = pedicel, plp = palpal segment, pos = postocular setae, preepst 2 = preepisternum 2, sc = scutum, scp = scape, wg = wing.

FIGURE 9. Manota flabellata sp. n. (A, B, C holotype, D paratype). A. Hypopygium, ventral view. B. Hypopygium, dorsal view. C. Hypoproct and aedeagus, ventral view, the medial dark stripe on aedeagus is ejaculatory apodeme. D. Posterior part of left side gonocoxa, dorsal view. Scale 0.1 mm.