Manota macrodon, Hippa, Heikki, 2008

Hippa, Heikki, 2008, Notes on Afrotropical Manota Williston (Diptera: Mycetophilidae), with the description of seven new species, Zootaxa 1741, pp. 1-23 : 10-13

Manota macrodon sp. n.

( Figs 6 A–D)

Male. Colour. Head dark brown, antenna paler brown, in holotype the basal segments paler than the apical ones, mouthparts pale yellowish, in the holotype the face seeming as dark as occiput, in the other specimen slightly paler.Thorax brown, preepisternum slightly paler ventrally. Legs (in holotype, tarsus 1 and femur, tibia and tarsus on legs 2 and 3 lost) pale yellowish-brown, coxa 3 basally and coxae 2 and 3 apically diffusely infuscated, femur 2 diffusely infuscated at base, femur 3 diffusely infuscated on both basal and apical third. Wing unicolorous pale brown; haltere pale yellowish with black knob. Abdomen (only remaining in holotype) brown. Setae brown, the thinner ones seeming pale, the thicker ones darker. Head. Antennal flagellomere 4, Fig. 6 A. Palpomere 3 of maxillary palpus with apicomesial extension, with 4 apically expanded curved sensilla; palpomere 4 with parasegment. Number of postocular setae 9–10. Thorax. Anepisternum setose, with 43–54 setae; anterior basalare setose, with 7–9 setae; preepisternum 2 setose, with 10–15 setae; laterotergite setose, with 34–40 setae; episternum 3 setose, with 19–22 setae. Wing. Length 1.9 mm. Hypopygium, Figs 6 B, C, D: Sternite 9 laterally fused with gonocoxa, extending posteriorly to base of gonostylus, posterior margin slightly convex, anterior margin notched, the setae similar to ventral setae of gonocoxa. Parastylar lobe transverse, large with broad basal part bearing one seta, and narrow knife-blade-like non-setose apical part.

Paraapodemal lobe not observable. Dorsal mesial margin of gonocoxa with a rather ill-defined flattened platelike lobe on apical half and with 5 blunt-ended megasetae at margin, the megasetae slightly flattened; at anteriormost megaseta with an acute-ended megaseta arising from a separate small lobe which lies on a more ventral level. The non-setose apicolateral part of gonocoxa extending posteriorly to middle of gonocoxa. Two juxtagonostylar setae present: the more dorsal one a rather unmodified megaseta, similar to the megasetae at dorsal mesial margin of gonocoxa, the more ventral one very broad and flat; the juxtagonostylar megasetae without a distinct basal body. Gonostylus bilobed, ventral lobe long-setose and with two very long and strong setae at apex, dorsal lobe also slightly bilobed, non-setose except for a few setae at margin. Tegmen narrowly subtriangular, with rather weak lateral shoulders. Hypoproct large, posteriorly extending as far as apex of gonostylus, with ca. 20 setae on each half. Cerci medially separate.

Female. Unknown.

Discussion. M. macrodon is similar to M. crassiseta Matile and M. cultrigera sp. n. It differs from both by having the megasetae at the mesial margin of gonocoxa in a rather contiguous row, not divided into distinct, more anterior and more posterior groups. The megasetae are also markedly longer than in the two other species. M. macrodon is similar to M. crassiseta and differs from M. cultrigera by having one sharp megaseta at the anteriormost of these megasetae, which are apically flattened and blunt. The parastylar lobe differs from that of M. cultrigera by having only one seta. The nature of the parastylar lobe in M. crassiseta is not clear, but to judge from Matile’s (1978) drawing it is similar to that of M. macrodon . M. macrodon is also similar to M. serrata Söli and M. sespinea Söli. The latter two differ e.g. by having the megasetae at the dorsal mesial margin of gonocoxa much weaker, about half as thick and long as in M. macrodon , and by having a large posteriorly directed conical parastylar lobe; in M. serrata the number of dorsal gonocoxal megasetae (ca. 10) seems distinctly higher.

Types. Holotype. Male, MADAGASCAR, Province Fianarantsoa, Ikongo Ambatombe, Forêt d'Ambalagoavy Nord, 21°49’39’’S 47°20’20’’E, 625 m a.s.l., Malaise trap, xi.2000, leg. Irwin & Harin’Hala. In CAS.

Figures

FIGURE 6. Manota macrodon sp. n. (holotype). A. Antennal flagellomere 4, lateral view. B. Hypopygium, dorsal view. C. Hypopygium, ventral view. D. Gonostylus, ventral view. Scale for A 0.05 mm, for B, C and D 0.10 mm.