Manota subdentata, Hippa, Heikki, 2008

Hippa, Heikki, 2008, New species and new records of Manota Williston (Diptera, Mycetophilidae) from the Oriental region, Zootaxa 1723, pp. 1-41 : 33-34

Manota subdentata sp. n.

( Figs 20 A, B, C)

Male. Colour. Almost unicolorous brown, mouthparts and legs only slightly paler, femur 3 with a slight indication of darker infuscation on apical third, wing pale brown, knob of haltere dark brown. Setosity paler or darker brown, the thicker setae seeming darker than the finer setae and trichia. Head. Antennal flagellomeres 4 and 5, Fig. 20 A. Palpomere 3 of maxillary palpus with apicomesial extension, with 4 apically expanded curved sensilla; palpomere 4 with parasegment. Number of postocular setae 11. Thorax. Anepisternum setose, with 20 setae, anterior basalare setose, with 8 setae, preepisternum 2 non-setose, laterotergite setose, with 21 setae, episternum 3 setose, with 3 setae. Wing. Length 1.8 mm. Hypopygium, Figs 20 B and C: Sternite 9 laterally fused with gonocoxa, extending posteriorly as far as ventral posterior margin of gonocoxa, anterior margin incised, the setae similar to ventral setae of gonocoxa. Parastylar lobe large, broad, with 3 setae at mesial margin. Paraapodemal lobe apparently absent. Dorsal mesial margin of gonocoxa simple, arcuate, with a few prominent setae on posterior half; the mesial margin partly covering on a more ventrally lying plate bearing 7–8 acute marginal megasetae. With a distinct slightly curved apicolateral lobe on gonocoxa with a few setae laterally and at apex, which extends posteriorly as far as the apex of gonostylus. One juxtagonostylar seta present, not differing much from other gonocoxal setae and arising from a rather short conical basal body. Gonostylus simple, small, oval, with rather short unmodified setae ventrally, largely non-setose dorsally, with prominent long setae at mesial margin. Tegmen subtriangular, the basal part and apodemes unusual ( Figs 20 B, C). Hypoproct large, extending posteriorly over middle of gonostylus, with some 25 setae on each half. Cerci medially separate.

Female unknown.

Discussion. M. subdentata is similar to M. dentata Hippa and Papp and M. heptacantha Hippa , but is distinguished from them e.g. by having the dorsal mesial megasetae of gonocoxa simple, narrowing towards the pointed apex, whereas in M. dentata and M. heptacantha they are flattened and slightly expanded at a blunt apex. Furthermore, M. subdentata differs from both by having the setosity on the dorsal side of gonocoxa rather similar throughout, while in M. dentata and M. heptacantha there is a group of differing longer setae near the apex. The three species seem to differ in the setosity of the gonostylus: in M. subdentata at the mesial margin there is only a couple of setae, one of which is conspicuously strong, whereas in M. dentata there are several equally strong setae and in M. heptacantha there are several setae of which one is strong and differing from the others. M. subdentata resembles two additional Oriental species, M. juncta sp. n. and M. confixa sp. n., but differs e.g. by the pointed dorsomesial megasetae on the gonocoxa and by the more anterior position of the gonocoxal apodemes. For further discussion, see under M. confixa . M. subdentata resembles some Afrotropical species, especially M. serrata Söli and M. sespinea Söli , but differs e.g. by the simple, not flattened juxtagonostylar seta.

Types. Holotype. Male, MALAYSIA, Pahang, Cameron Highlands, Tanah rata, forest, 4o28’N 101o 23’E, 4800–5000ft, 6.xi.1983, J. W. Ismay, BM 1984-71 (in BMNH).

Figures

FIGURE 20. Manota subdentata sp. n. (holotype). A. Antennal flagellomeres 4 and 5, lateral view. B. Hypopygium, dorsal view. C. Hypopygium, ventral view. Scale 0.10 mm.