Manota nimia, Kurina, Olavi & Hippa, Heikki, 2015

Kurina, Olavi & Hippa, Heikki, 2015, A review of the South Pacific Manota Williston (Diptera, Mycetophilidae), with the description of thirteen new species, Zootaxa 4020 (2), pp. 257-288 : 275

Manota nimia sp. n.

Figs 10 A–G

Male. Colour. Head brown, face somewhat paler. Antenna including scape and pedicel light brown. Clypeus and mouthparts pale yellowish. Thorax light brown, medial part of scutum and scutellum somewhat darker. Legs yellowish, basal fourth of midfemur and apical fifth of hind femur slightly infuscated. Wing hyaline; haltere yellow with brownish 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. Antennal flagellomere 4 Fig. 10 A. Palpal segment 3 of maxillary palpus with apicomedial thumb-like extension, with five apically curved and strongly flattened sensilla; palpal segment 4 with parasegment; palpal segment 5 missing in holotype. Nine strong postocular setae. Thorax. Anepisternum with 54 setae; anterior basalare non-setose; preepisternum medially with patch of 19 setae; laterotergite with 20 setae; metepisternum with 6 setae. 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 1.7 mm. Hypopygium, Figs. 10 B–G. Sternite 9 unusually narrow, elongate subquadrangular, almost as long as the ventral length of gonocoxa, lateral margin separated from gonocoxa, anterior margin deeply incised, posterior margin shallowly notched, the setae similar to the ventral setae of gonocoxa, two or three posterior most setae larger than the others. Ventromedial margin of gonocoxa simple, the margins on both sides nearly parallel, the medial and posterior margin of gonocoxa form an almost acute rounded angle. The ventral setae of gonocoxa unmodified. Parastylar lobe angled, with transverse inflated lateral part and posteriorly directed medial finger-like part, the latter has five setae of which one is apical, the rest are ventral or at margins. Paraapodemal lobe similar to Fig. 2 B but not freely visible in ventral view. Dorsomedial margin of gonocoxa convex, with short setae at the middle. The apicomedial corner of the gonocoxa with a large oblique lobe bearing ~4 apical setae and 4 setae in more basal position on the medial margin. The dorsal setosity of gonocoxa normal, similar to the ventral one but with one stronger seta posteriorly. Gonostylus about two thirds of the ventral length of gonocoxa, anteroposteriorly elongated with convex lateral and concave medial surface, with several lobes ( Fig. 10 D), subapically with two short blunt megasetae, the gonostylar apodeme unusually large, generally the setosity unmodified, confined to lateral/ventral parts; the microtrichia on the medial surface long and conspicuous. One juxtagonostylar seta present as a long apically expanded and curved megaseta arising from a basal body that is about one fourth of the length of the megaseta. Aedeagus elongate subtriangular, with very weak lateral shoulders, the apex curved ventrad. Hypoproct extending posteriorly to the base of gonostylus, the ventral part (sternite 10) with ~10 scattered setae. Cerci medially separate, with apical setae only.

Female unknown.

Discussion. Manota nimia belongs to a large group of species as defined under M. acris . Within this group M. nimia resembles M. hamulata , M. bicuspis and M. siciliculata in having two short megasetae (not one long, or two long together with two shorter ones) subapically on the gonostylus. Manota nimia is distinguished from the above mentioned species by: 1) characteristic parastylar lobe which is angled, composed of inflated transverse lateral part and posteriorly directed apically attenuating medial part, and 2) having only one juxtagonostylar seta (similarly to M. pentacantha ). Manota nimia has a very strong gonostylar apodeme like some other species in the group ( M. pacifica , M. pentacantha , M. unisetata ), but the character is difficult to observe in some slide mounts. The parastylar lobe in M. nimia resembles that of M. pentacantha in having its lateral (basal) part inflated, but contrasting with the latter M. nimia has the lobe angled instead of being straight.

Etymology. The name is Latin, nimia [excessive] referring to the excessively lobed gonostylus.

Types. Holotype. Male, SOLOMON ISLANDS, Santa Ysabel (SE), Malaise trap, 8.ix.1964, R. Straatman (BPBM).

Figures

FIGURE 2. Manota acris sp. n. (holotype). A. Hypopygium, dorsal view. B. Hypopygium, ventral view. C. Gonostylus, dorsal view. D. Tergite 9, apex of aedeagus and cerci, dorsal view. E. Hypoproct and aedeagus, ventral view. Scale 0.1 mm. aed = aedeagus, ce = cercus, dm = dorsomedial margin of gonocoxite, gs = gonostylus, gsl = apical lobe of gonostylus, gsm = gonostylar megaseta, gx = gonocoxite, gxa = gonocoxal apodeme, hpr = hypoproct, jxs = juxtagonostylar setae, mlg = lobe on dorsomedial margin of gonocoxite, pal = paraapodemal lobe, plg = lobe on posterior dorsal margin of gonocoxite, psl = parastylar lobe, st 9 = sternite 9, tg 9 = tergite 9.

FIGURE 10. Manota nimia sp. n. (holotype). A. Antennal flagellomere 4, lateral view. B. Hypopygium, dorsal view. C. Hypopygium, ventral view. D. Gonostylus, dorsal view. E. Parastylar lobe (broken lines) and juxtagonostylar seta, ventral view. F. Hypoproct and aedeagus, ventral view. G. Cercus, dorsal view. Scale 0.1 mm.