Manota clavulosa, 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 : 9-12

Manota clavulosa sp. n.

( Figs 1 A, B, 6 A, B, C)

Male. Colour. Head brown, frons, vertex and occiput slightly darker brown, antennal scape, pedicel and basal flagellomeres ventrally slightly paler, mouthparts pale yellowish. Thorax brown, episternum 1 and preepisternum 2 ventrally paler. Legs pale yellowish, femur 3 infuscated on apical third. Wing unicolorous pale brown; haltere pale brown with dark brown knob. Abdomen brown. All the setosity pale, yellowish or brownish, the thicker setae seeming darker than the finer setae and trichia. Head. Antennal flagellomere 4, Fig. 6 A. Palpomere 3 of maxillary palpus with apicomesial extension, with 4–5 apically expanded curved sensilla; palpomere 4 with parasegment. Number of postocular setae 9–13. Thorax. Anepisternum setose, with 26–31 setae, anterior basalare setose, with 3–4 setae, preepisternum 2 setose, with 28–33 setae, laterotergite non-setose, episternum 3 setose, with 16–17 setae. Wing. Length 2.0 mm. Hypopygium, Figs 6 B and C: Sternite 9 about one-half of the ventral length of gonocoxa, lateral margin sharply delimited, posterior margin narrow with a medial cleft, anterior margin deeply incised, the setae similar to the ventral setae of gonocoxa, densely placed posteriorly. Ventral mesial margin of gonocoxa sigmoid. Parastylar lobe large, with numerous setae at mesial margin and on dorsal side. Paraapodemal lobe distinct, partly covered by the parastylar lobe. Dorsal mesial margin of gonocoxa simple, but on the apical half with a plate-like lobe lying on a more ventral level and bearing 5 transversely-cut megasetae. Two juxtagonostylar setae present, one of these a strong but otherwise unmodified seta, the other a strong peculiarly shaped megaseta, both arising from a low common basal body. Gonostylus simple, elongate-oval, with rather short unmodified setae, on the dorsal side with very strong setae at apicomesial margin and a group of densely placed weaker setae in more lateral position. Tegmen subtriangular, without lateral shoulders. Hypoproct extending posteriorly to the middle of gonostylus, with some 12 setae on each half, the most mesial of these unusually strong. Cerci medially separate.

Female. Similar to male. Antennal flagellomere 4, Fig. 1 A. Palpomere 3 with 3 apically expanded sensilla. Anepisternum with 41 setae, anterior basalare non-setose, preepisternum 2 with 19 setae, episternum 3 with 21 setae. Wing length 2.3 mm. Tip of abdomen, Fig. 1 B: cercus two-segmented with the basal segment unusually broad and the apical segment unusually small.

Discussion. M. clavulosa resembles M. collina sp. n. and M. planilobata sp. n. It differs from both by having thick claw-like setae mesially on the hypoproct and by having a pair of tooth-like projections at the apex of the tegmen, by having the thicker one of the juxtagonostylar megasetae flattened, and by having a few very strong setae posterolaterally on the gonocoxa. The thicker one of the juxtagonostylar megasetae has a subbasal rounded corner visible from a suitable angle of view and is reminiscent of the strongly geniculate condition in M collina . The gonostylus of M. clavulosa differs from that of M. collina and is similar to that of M. planilobata by having strong setae/megasetae. In M. clavulosa there are five such setae around the apical part of the mesial margin and there is a wide aggregation of similar but shorter setae on the apicodorsal part of the gonostylus, whilst in M. planilobata there are only three strong setae, two at the apicomesial corner and one placed more basally on the mesial margin. In M. clavulosa the subapical lobe which is seen on the dorsal mesial margin of gonocoxa in M. collina and in M. planilobata appears to be absent. It is in fact present but difficult to recognize because it is very broad and forms the apical margin of the gonocoxa ( Fig. 6 B). In M. clavulosa the plate-like lobe between this lobe and the gonocoxal apodeme has 5 strong setae on its ventral side as in M. planilobata but unlike that species they are apically flattened. For further discussion, see under M. collina . The female of M. clavulosa differs from other known Manota females with 2-segmented cercus by having the apical segment unusually small. The basal segment is unusually broad and is somewhat reminiscent of the one-segmented cercus of M. perlobata sp. n. except that the groups of hyaline sensilla are absent. The antennal flagellomeres are unusually long, longer than broad, but in this respect similar females can be expected in species in which the male has elongated flagellomeres.

Types. Holotype. Male, THAILAND, Chiang Mai, Doi Inthanon NP, checkpoint 2, 1700 m, 18o 31.559N 98o29.941’E, Malaise trap 16–24. viii.2006, Y. Areeluk leg., T187 (in QSBG).

Paratype. 1 male with same data as holotype but 27.ix–5.x., T349 (in SMNH).

Other material. 1 female with same data as holotype but 2–9.viii.2006, T127 (in QSBG).

Figures

FIGURE 1. Female antennal flagellomere 4, lateral view (A, C, E), and apical part of female abdomen, lateral view (B, D, F). A, B. Manota clavulosa sp. n. C, D. M. perlobata sp. n. E, F. M. inflata sp. n. Scale for A, C and E 0.05 mm, for B, D and F 0.10 mm.

FIGURE 6. Manota clavulosa sp. n. (holotype). A. Antennal flagellomere 4, lateral view. B. Hypopygium, dorsal view. C. Hypopygium, ventral view. Scale 0.10 mm.