Manota sinepollex, Hippa, Heikki & Ševċík, Jan, 2010

Hippa, Heikki & Ševċík, Jan, 2010, Notes on Oriental and Australasian Manotinae (Diptera, Mycetophilidae), with the description of thirteen new species, Zootaxa 2333, pp. 1-25 : 15

Manota sinepollex sp. n.

Figs 1 C, 11 A, B, C

Male. Colour. Head pale brown, frons and vertex slightly darker brown. Antenna pale brown, flagellomeres 1–4 ventrally paler than other parts. Mouthparts pale yellowish. Thorax dorsally brown, laterally paler brown. Leg pale yellowish, apices of coxa 2 and 3 darker. Wing pale yellowish-brown with a diffuse darker brown patch at middle of anterior half ( Fig. 1 C); haltere yellowish-brown with brown knob. Abdominal tergites brown, sternites pale brown. All setosity yellowish or brownish, thicker setae apparently darker than finer setae and trichia. Head. Antennal flagellomere 4, Fig. 11 A. Palpomere 3 of maxillary palpus without apicomesial extension, without apically expanded curved sensilla; palpomere 4 with parasegment, palpomere 5 ca 1.2 times longer than palpomere 4. About 15–18 strong postocular setae. Thorax. Anepisternum nonsetose; anterior basalare non-setose; preepisternum 2 non-setose; laterotergite setose, with 18–24 setae; episternum 3 non-setose. Wing. Fig. 1 C; wing length 2.0 mm. Hypopygium, Figs 11 B, C. Sternite 9 about half the ventral length of gonocoxa, with sharply delimited convergent lateral margins, posterior margin with a medial ’knob‘, anterior margin deeply incised but the sides of the incision posteriorly closely approximate, setae similar to adjacent setae of gonocoxa. Mesial margin of gonocoxa appearing as a large subtriangular lobe. No distinct parastylar lobe visible, but there is a small curved apically setose lobe and a membranous non-setose lobe at ventral mesial margin of gonocoxa (see Fig. 11 C), either or both of which may be the parastylar lobe. Dorsal mesial margin of gonocoxa simple, convex. No apophysis dorsally at posterior margin of gonocoxa. A transverse lobe with 4–5 megasetae and 1–2 short usual setae subapically at dorsal mesial margin of gonocoxa. Juxtagonostylar setae in form of two expanded, complex megasetae arising from large but short basal bodies which may be at least partly united. Gonostylus simple, nearly 3 times longer than broad, elongate oval in outline, ventral side evenly covered by rather short setosity, dorsal side non-setose except for a stripe of few setae in middle. Aedeagus subtriangular, with weak lateral shoulders, apex curved ventrad. Hypoproct short, posterior margin at level of basal part of gonostylus, with rounded posterolateral corners, ca. 15 ventral setae on a medial lobe. Tergite 9 unusually well developed posteriorly, with 1 seta in holotype, non-setose in paratype. Cercus unusually complex, divided into dorsal and ventral lobes, the former further divided into smaller lobes; cerci fused at extreme base.

Female unknown.

Discussion. M. sinepollex is one of the few Manota species in which episternum 2 is non-setose, the others being M. ctenophora Matile ( New Caledonia), M. forceps Hippa & Papp ( Thailand) , M. maorica Edwards ( New Zealand), M. radula sp. n. (Borneo), M. serawei Hippa (New Guinea), M. subforceps sp. n. (Sumatra), M. taedia Matile ( New Caledonia) and M. unifurcata Lundström (Europe) . It is also one of the few species in which the vein R1 is long, meeting the costa near the middle of the wing instead of well into the basal half; the other species are M. avita Hippa ( Thailand) , M. forceps , M. maorica , M. subforceps and M. unifurcata, Further , M. sinepollex belongs to a group of a few species which lack the apicomesial extension and the curved sensilla on the maxillary palpomere 3; other species are M. avita , M. forceps , M. natalensis Jaschhof et Mostovski ( South Africa), M. radula and M. subforceps . Thus, M. sinepollex shares all the three above mentioned characters only with M. forceps and M. subforceps . M. sinepollex differs from both by having the laterotergite setose. In the hypopygial characters, M. sinepollex is distinguished from any described Manota species by the many-lobed cercus. It is rather similar to M. avita (cf. Hippa 2009: fig. 2) so that it is possible to homologise nearly all the structures, but in M. avita the gonostylus is two-lobed and the cercus is less modified. M. sinepollex resembles M. avita , M. forceps and M. subforceps by having a dark patch at the costal margin of the wing.

Etymology. The name is derived from the Latin words sine, without and pollex, thumb, referring to the maxillary palpomere 3, which lacks a thumb-like apicomesial extension.

Types. Holotype. Male, INDONESIA, Sumatra, Sumatera Utara, Semangat Gunung, 1300 m, Malaise in jungle, 16.iii.1992, H. Hippa (in SMNH).

Paratypes. 1 male with same data as the holotype (in SMNH).

Figures

FIGURE 1. Wing, dorsal view (A, B, C, E) and basal part of wing, ventral view (D). A. Manota bruneiensis sp. n. (paratype) B. M. subforceps sp. n. (holotype). C. M. sinepollex sp. n. (holotype). D, E. Eumanota vilkamaai sp. n. (holotype). Scale 1.0 mm.

FIGURE 11. Manota sinepollex sp. n. (A paratype, B, C holotype). A. Antennal flagellomere 4, lateral view. B. Hypopygium, dorsal view. C. Hypopygium, ventral view. Scale 0.10 mm, cr d = dorsal lobe of cercus, cr v = ventral lobe of cercus, gx l = lobe at mesial margin of gonocoxa, jx s = juxtagonostylar megasetae.