Manota mitrata, 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 : 382-383

Manota mitrata sp. n.

Figs. 4 A–E

Male. Midlegs missing in the single specimen. Colour. Head pale brown, frons and vertex darker brown. Antenna brown. Mouthparts pale yellowish. Thorax brown. Legs pale yellowish brown, hind coxa with infuscated patch posteriorly at base, hind femur infuscated on apical third and faintly so baso-ventrally. Wing unicolorous pale brown; halter pale brown with dark brown knob. Abdomen brown. All setosity pale, yellowish or brownish. Head. Antennal flagellomere 4, Fig. 4 A . Palpomere 3 of maxillary palpus with apicomedial thumb-like extension, with 4 apically curved sensilla; palpomere 4 with parasegment; palpomere 5 ca. 1.5 times longer than palpomere 4. Number of strong postocular setae 9–12. Thorax. Anepisternum setose, with 34–37 setae; anterior basalare setose, with 9 setae; preepisternum 2 setose, with 12–14 setae; laterotergite nonsetose, episternum 3 setose, with 8 setae. Legs. Presence of midtibial organ unknown. Hind tibial organ present. Wing. R1 meeting C within the basal half of the costal margin; the sclerotized part of M2 extending to the level of the tip of R1; wing length 1.9 mm. Hypopygium, Figs. 4 B–E : Sternite 9 about one-half of the ventral length of gonocoxa, lateral margins sharply delimited, convergent, posterior margin short, transverse, deeply medially V-shaped cleft, anterior margin deeply incised, the setae similar to the ventral setae of gonocoxa. Ventromedial margin of gonocoxa forming a sharp angle towards the medial line. Parastylar lobe subtriangular, with several setae at medial angle. Paraapodemal lobe distinct, large, with a posteriorly directed branch, the latter visible in Fig. 4 B at posterior margin of the parastylar lobe. Dorsomedial margin of gonocoxa simple, convex, posteriorly forming a rounded lobe with the posterior margin of gonocoxa and bearing many short setae. Gonocoxa dorsally without any kind of lobe posterolaterally. A plate-like lobe posteriorly on gonocoxa, situated ventrally from the dorsomedial margin, bearing ca. 5 strong setae on its ventral surface and a couple of weaker setae at its posterior margin. Two juxtagonostylar setae present, both being rather weakly modified, curved megasetae which are slightly unequal in thickness, the larger one slightly flattened, each arising from a separate small basal body, in dorsal or ventral view the two setae cross each other. Gonostylus simple, elongate-rectangular, the setae unmodified, lacking on dorsal side except for the apical part. Aedeagus unusual in shape, elongate subquadrangular, slightly narrowed on apical part, apicolaterally with two parallel lobe-like parts medially separated by pale membranous stripe, on the ventral side of these lobes a hood-like lobe covering the aedeagal tube (actual apex of aedeagus) which is directed posteriorly, not curved ventrally. Hypoproct extending posteriorly to the apex of gonostylus, with lateroventral lobes (sternite 10) bearing ca 10 setae each, the setae indistinctly arranged in a row. Cerci medially separate, simple. Tergite 9 membranous.

Female unknown.

Discussion. Manota mitrata is similar to M. auriculata Hippa (known from northern Thailand) in having a setose anepisternum, anterior basalare and preepisternum 2, a nonsetose laterotergite, a one-lobed gonostylus, subtriangular medial margin of the gonocoxa, a well-developed parastylar lobe, medially separate cerci and an unusual apically broad aedeagus with apicolateral lobes. Both these species also have an unusual paraapodemal lobe with a strong, posteriorly directed, lobe. The two species can be distinguished as follows: in M. mitrata the apex of the aedeagus is narrow, about half of the medial width of the aedeagus, whereas in M. auriculata the apex is broad, equal with the medial width; also in M. mitrata the apicolateral margin of the aedeagus is only slightly flared, in M. auriculata the apex is strongly flared apicolaterally into horn-like lobes. Concerning the aedeagus, there is a third species, M. bifida Hippa & Papp , known from Thailand and Borneo, which is also similar to these two species. The aedeagus is apically broad and has apicolateral lobes, but these lobes are very long, nearly half of the total length of the aedeagus, and they are directed posteriorly. In addition, M. bifida differs from M. auriculata and M. mitrata in having a setose laterotergite and a single juxtagonostylar seta.

Etymology. The name is Latin, mitrata [wearing a miter or headdress], referring to the hood-like lobe present ventrally on the aedeagus.

Types. Holotype. Male, CHINA, Shaanxi, Fuping-x, Wangkoushang , 1450 m, 2 km NE of Donghetai, 25 June 1997, T. Saigusa (in KMNH).

Figures

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