Manota tripectinata, Hippa, Heikki, Kjaerandsen, Jostein & Saigusa, Toyohei, 2011

Hippa, Heikki, Kjaerandsen, Jostein & Saigusa, Toyohei, 2011, The genus Manota Williston (Diptera, Mycetophilidae) in Japan, with a key to the Palaearctic species of the genus, Zootaxa 2892, pp. 33-46 : 41-43

Manota tripectinata sp. n.

Figs 6 A–D

Male. Colour. Head pale brown, frons and vertex darker brown. Antenna pale brown, scapus, pedicellus and flagellomere 1 ventrally paler than the other parts. Mouthparts pale yellowish, paler than the pale parts of antenna. Thorax brown, preepisternum 2 paler than the other parts. Legs pale yellowish-brown, femur 3 infuscated at apex. Wing unicolorous pale greyish-brown; haltere yellowish-brown with the knob darker brown. Abdomen rather unicolorous brown. All the setosity yellowish or brownish, the thicker setae seeming darker than the finer setae and trichia, the thickest ones seeming black. Head. Antennal flagellomere 4, Fig. 6 A. Palpomere 3 of maxillary palpus with apicomesial thumb-like extension, with 3–4 apically expanded curved sensilla; palpomere 4 with parasegment; palpomere 5 ca 1.4 times as long as palpomere 4. Number of strong postocular setae 11–12. Thorax. Anepisternum setose, with ca. 35 setae, anterior basalare setose, with ca. 10 setae, preepisternum 2 setose, with ca. 30 setae, laterotergite non-setose, episternum 3 setose, with ca. 15 setae. Legs. Middle tibial organ lacking. Hind tibial organ present. Wing. R1 meeting C well on the basal half of the costal margin; the sclerotized part of M2 basally extending to the level of the tip of R1, wing length 1.8–1.9 mm. Hypopygium, Figs 6 B, C, D: Sternite 9 nearly as long as ventral length of gonocoxa, lateral margin sharply delimited, converging posteriad, posteriorly with a medial cleft which anteriorly is extending nearly to the deeply incised anterior margin so that the sclerite is almost completely divided into two halves, the setae of sternite 9 similar to the ventral setae of gonocoxa. Ventral mesial margin of gonocoxa with a long parallel-sided nonsetose lobe, in ventral aspest partly consealed under sternite 9; ventral posterolateral part of gonocoxa produced lobe-like. Parastylar lobe not certainly indentified, probably represented by a long hyalinous and short sclerotized lobe between the base of gonostylus and the paraapodemal lobe in Fig. 6 B. Paraapodemal lobe unusually large, basally inflated, the narrow apical part posterioly extending to the middle of gonostylus. Tergite 9 membranous, the basal margin somewhat sclerotized and discernible. Dorsal mesial margin of gonocoxa simple, subapically with 2 long megasetae. Number of juxtagonostylar setae 2, one a stout megaseta arising from an inconspicuous low basal body, the other an unmodified seta arising ventrally from the basal body of the former. Gonostylus elongate, ca. 4 timed longer than broad, curved; on apical part with three, ventral, lateral and dorsal, comb-like rows of short megasetae; otherwise gonostylus bare except for many ventral and a few dorsal usual setae on the basal half. Aedeagus narrow, parallel-sided, without a ventrally curved apex, with a window-like membranous area subapically on the ventral side anteriorly limited by a small transverse lobe. Hypoproct posteriorly reaching just over middle of gonostylus, with ca. 40 scattered setae on each half. Cerci medially separate.

Female unknown.

Discussion. Manota tripectinata is similar to M. tunoae Hippa & Kjaerandsen, 2010 . Both these species differ from all other described Manota by having three comb-like rows of short megasetae in the apical part of the gonostylus, one ventral, one lateral and one dorsal in position. Manota tripectinata is distinguished from M. tunoae as follows: 1) the gonostylus is about 4 times longer than broad and curved, in M. tunoae about 2.3 times longer and straight, 2) the dorsal one of the comb-like rows of megasetae on the gonostylus is transverse, not longitudinal, 3) there are two long megasetae posteriorly at the dorsal mesial margin of the gonocoxa which in M. tunoae are replaced with two or three almost unmodified setae, 4) the apical margin of the aedeagus is evenly rounded, not with a prominent apicolateral lobe on each side as in M. tunoae , and 5) the aedeagal orifice is in a subapical window-like membranous part, not on a sclerotized projection at the posterior margin of aedeagus. Furthermore, the paraapodemal lobe is well exposed in ventral view and has a long narrow finger-like part, in M. tunoae it is in ventral view concealed under a long lobe arising from the ventral mesial margin of gonocoxa (see Hippa & Kjaerandsen 2010, fig. 9) and lacks the finger-like part. Concerning the latter lobe, Hippa and Kjaerandsen (2010) suggested that it could be a part of a complex parastylar lobe, but we regard it unlikely. For further character analysis, see under M. tunoae in Hippa & Kjaerandsen (2010).

Etymology. The name is an adjective composed of the Latin tri-, three and pectinata, with a comb, referring to the three comb-like rows of megasetae on the gonostylus.

Types. Holotype. Male, JAPAN, RYUKYUS, Okinawa Prefecture, Yaeyama Islands, Iriomote-jima, Mt. Ushikumori, 24°19'48"N, 123°48'00"E, 350 m a.s.l., 3–7 Nov 1963, leg. G. A. Samuerson (in KMNH)

Paratype. JAPAN, RYUKYUS, 1 male, Okinawa Prefecture, Yaeyama Islands, Ishigaki-jima, Mt. Omotodake, 24°25'40"N, 123°11'09"E, 200–500 m a.s.l., 9 Apr 1999, leg. T. Saigusa (in MZLU).

Figures

FIGURE 6. Manota tripectinata sp. n. (A paratype, B, C, D holotype). A. Antennal flagellomere 4, lateral view. B. Hypopygium, ventral view. C. Hypopygium, dorsal view. D. Aedeagus, sternite 10 and Hypoproct, ventral view. Scale 0.1 mm.