Manota triseta, Hippa & Søli & Kurina, 2019

Hippa, Heikki, Søli, Geir & Kurina, Olavi, 2019, New data on the genus Manota Williston (Diptera: Mycetophilidae) from Africa, with an updated key to the species, Zootaxa 4652 (3), pp. 401-441 : 427-429

Manota triseta sp. n.

Figs 12 A–C

Male. Colour. Head brown, face somewhat paler. Antenna light brown, including scape and pedicel. Clypeus and mouthparts pale yellowish. Thorax yellowish. Legs yellowish to light brown, apical fourth to third of hind femur infuscated. Wing with light brownish tinge because of microtrichia; halter yellowish with brown knob. Abdomen brown, tergites laterally and sternites lighter. All vestiture pale, yellowish or brownish, thicker setae and trichia seeming darker than finer ones. Head. Antennal flagellomere 4 ca. 1.3 times as long as wide. Palpomere 3 of maxillary palpus with apicomesial thumb-like extension, with 4 apically curved sensilla; palpomere 4 with parasegment; palpomere 5 ca. 1.4 times as long as palpomere 4. 9-11 strong postocular setae. Thorax. Anepisternum with 52–57 setae; anterior basalare and laterotergite non-setose; preepisternum 2 with 13–17 setae; metepisternum with 15–16 setae. Legs. Mid and hind tibial organs absent. Wing. R 1 meeting C within basal half of costal margin; sclerotized part of M 2 not extending to level of tip of R 1; wing length 1.7–1.9 mm. Hypopygium ( Figs 12 A–C). Sternite 9 laterally free from gonocoxa at posterior 2/3, anterior 1/3 fused with gonocoxa, posterior margin membranous, shallowly concave, extending about the middle between bases of gonocoxa and gonostylus, anterior margin with deep and wide V-shaped incision medially, anterior half non-setose, setae on posterior half similar to those on ventral side of gonocoxa. Ventral medial margin simple. Parastylar lobe large, plate-like, two setae anteriorly on ventral surface. Dorsal medial margin of gonocoxa simple, slightly convex, with tight aggregation of fine setae posteriorly on ventral surface. On the ventral side of the posteromedial angle a finger-like lobe bearing two apical setae. Two juxtagonostylar setae present, a normal seta and apically curved simple megaseta, both arising from a common basal body, which is about of the length of megaseta. Gonostylus elongated, about 5 times as long as wide, slightly curved, with a medial small hump-like lobe bearing 2 normal setae, and with 3 very long and medially directed setae apically, otherwise the gonostylar setosity is similar to that of gonocoxa. Aedeagus short, subtriangular, with prominent lateral shoulders, apex curved ventrad. Hypoproct posteriorly not reaching the base of gonostylus, the ventral setae strong and forming a mesial longitudinal stripe of ca. 5 setae on each half. Cerci medially separate, simple, the setae confined to apical part, the longest ones maximally two times longer than the apical width of cercus.

Female. Unknown.

Etymology. The name is Latin, triseta, ‘three setae’, referring to the three very long medially directed apical setae of gonostylus; noun in apposition.

Comments. The non-setose laterotergite, setose preepisternum 2, and the gonocoxa posterodorsally with a fingerlike lobe with two apical setae group M. triseta sp. n. together to M. comata , M. pedicellata, M. relicina , M. petiolata and M. burundiensis . Among them, M. triseta is unique in having gonostylus apically or subapically without small lobe that bears two rather short megasetae. Otherwise, M. triseta is similar to M. issongo because of very long, medially directed setae apically on the gonostylus but distinguished in having (1) the finger-like lobe posterodorsally on the gonocoxa with two setae at apex (one seta in M. issongo ), (2) the three very long setae apically on the gonostylus (two setae in M. issongo ), (3) the two setae medially on the gonostylus arise from a distinct lobe (no distinct lobe discernible in M. issongo ), (4) the two setae on the parastylar lobe separated by a distinct gap (two setae on the parastylar lobe close to each other in M. issongo ), and (5) the ventral setae of hypoproct are in one row on each side, flanking the apex of aedeagus (setae on the hypoproct arranged as a patch in M. issongo ).

Types. Holotype. Male, GHANA, Volta region, Wli Falls, Agumatsa (St. 6A), 12– 21.11.1993, NUFU-ZMBN, leg. J. Kjaerandsen (slide mounted, NHMO) . Paratypes. 4 males, as holotype (slide mounted, IZBE and NHMO) ; 3 males, as holotype except 11– 20.11.1993 (slide mounted, IZBE and NHMO) ; 2 males, GHANA, Volta region, Wli Falls, Afegame ( St. 9A), 7– 10.03.1993, NUFU-ZMBN/ leg. J. Kjaerandsen (slide mounted, NHMO) ; male, GUINEA, Monts Nimba / DL-HP-JYR // Source 1200 M/ Piége Malaise / 27-iv–7-v-1993 (slide mounted, MNHN) ; male, GUINEA, Mt. Nimba, Ft. Gal. du Zougué, 750 m, 18–29.VI.1991, Girard et Legrand col., Piège de Malaise (slide mounted, MNHN) .

Additional material. 23 males, GHANA, Volta region; Wli Falls, Agumatsa; St : 11, 11- 20.11.1993; NUFUproject ZMBN; leg. J. Kjaerandsen (1 slide mounted, 22 in alcohol, IZBE and NHMO); male same data except 13– 20.11.1993 (in alcohol, NHMO) .

Figures

FIGURE 12. Manota triseta sp. n. (holotype). A. Hypopygium, dorsal view. B. Hypopygium, ventral view. C. Hypoproct and aedeagus, ventral view. Scale 0.1 mm.