Manota adunca, Hippa & Saigusa, 2016

Hippa, Heikki & Saigusa, Toyohei, 2016, Notes on Oriental and East Palaearctic Manota Williston (Diptera, Mycetophilidae), with the description of seven new species, Zootaxa 4084 (3), pp. 377-390 : 378-379

Manota adunca sp. n.

Figs. 1 A–D

Male. Colour. Head brown, face somewhat paler. Antenna brown. Mouthparts pale yellowish. Thorax brown. Foreleg yellowish, femur with infuscated patch basoventrally. Mid- and hind legs pale brownish, mid- and hind coxa paler than other parts but with the base and apex brown, mid- and hind trochanter brown, mid- and hind femur brownish, darker basally and apically than in the middle. Wing pale grayish brown, apical third slightly darker than the basal part; halter brown. Abdomen brown. All setae pale, yellowish or brownish, the thicker setae seeming darker than the finer ones. Head. Antennal flagellomere 4, Fig. 1 A . Palpomere 3 of maxillary palpus with apicomedial thumb-like extension, with 2 apically curved sensilla; palpomere 4 with parasegment; palpomere 5 ca. 1.3 times longer than palpomere 4. Eleven strong postocular setae. Thorax. Anepisternum setose, with 42 setae; anterior basalare, preepisternum 2, and laterotergite non-setose; episternum 3 setose, with 8–11 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 extending beyond the level of the tip of R1; wing length 2.3 mm. Hypopygium, Figs. 1 B–D : Sternite 9 membranous except the narrow posterior part, covered by the medial margin of gonocoxa, nonsetose. Ventromedial margin of gonocoxa convex, simple, ventral setae unmodified. Parastylar lobe membranous, transverse, nonsetose, in Fig. 1 B marked on the left side. No identifiable paraapodemal lobe present. Dorsomedial margin of gonocoxa simple, posteriorly indistinct and confluent with a long plate-like lobe with a row of ca.15 short strong setae. Dorsal setae of gonocoxa similar to the ventral ones, a couple of very long setae posteriorly. No posterolateral lobe. Two juxtagonostylar setae, one unmodified acute megaseta, the other flattened and blunt and with a narrow curved branch. Gonostylus small, angulate, the narrow apical part turned medially, setae rather weak, the medially curved apical part ventrally nonsetose, the dorsal side with wide nonsetose areas, the apex with a group of long setae some of which are stronger than other gonostylar setae. Aedeagus elongate subtriangular, without lateral shoulders, the apex curved ventrally. Hypoproct posteriorly extending to the level of the middle of gonostylus, with narrowing posterior part beyond sub-basal lateral shoulders, the ventral setae (sternite 10) scattered, ca. 30 on each half. Cerci medially separate, simple. Tergite 9 membranous.

Female. Unknown.

Discussion. In the key to the Oriental Manota ( Hippa 2011) , M. adunca runs to couplet 13 but does not fit either of the two options: sternite 9 laterally separated from gonocoxa by a distinct long margin anteriorly extending to the base of gonocoxa; or sternite 9 laterally fused with the gonocoxa. In M. adunca sternite 9 is obscured so that the margin of only the subtriangular posterior part is clear, the more anterior part being membranous and lying under the medial margin of the gonocoxa; in the other alternative in couplet 13 the lateral margin is totally fused with the gonocoxa, its posterior margin is very broad and transverse and extends posteriorly near to the level of the base of gonostyli. M. adunca differs from the both alternatives in couplet 13 in having an unusually angular gonostylus with the apex directed medially, and in lacking a sclerotized setose parastylar lobe.

Etymology. The name is Latin, adunca , bent inwards, referring to the angled gonostylus with the apex directed medially.

Types. Holotype. Male , TAIWAN, Taichun-hs., Suchilanchi 1600 m, Huangshan nr. Lishan, Nov. 25, 1999, T. Saigusa col. (in KMNH).

Figures

FIGURE 1. Manota adunca sp. n. (holotype). A. Antennal flagellomere 4, lateral view. B. Hypopygium, ventral view. C. Hypopygium, dorsal view. D. Gonostylus, dorsal view. Scale 0.1 mm.