Manota ctenophora Matile

Hippa, Heikki, 2007, The genus Manota Williston (Diptera: Mycetophilidae) in Melanesia and Oceania, Zootaxa 1502, pp. 1-44 : 10-12

Manota ctenophora Matile

( Figs 2 C, 5A–D)

Manota ctenophora Matile, 1993: 208 .

A small-sized Manota .

Male. Coloration. See Matile (1993). Head. Antennal flagellomere 4, Fig. 5 D. Palpomere 3 of maxillary palpus with apicomesial extension, with 3–4 apically expanded curved sensilla; palpomere 4 with parasegment. Thorax. Pleural setosity similar to M. serawei , Fig. 1 A: anepisternum non-setose; anterior basalare non-setose; preepisternum 2 setose, with 5 setae; laterotergite setose, with ca. 29 setae; episternum 3 setose, with ca. 9 setae. Wing. Length 1.6 mm. Hypopygium ( Figs 5 A–C). Sternite 9 extending posteriorly near to the level of the base of gonostylus, laterally sharply delimited, the posterior margin medially with a lobe-like convexity, the anterior margin deeply notched, the setae similar to adjacent ventral setae of gonocoxa. The ventral mesial margin of gonocoxa convex at the middle. Parastylar lobe exposed, with a narrower more sclerotized anterior part and a broader more weakly sclerotized posterior part, the anterior part with one seta directed obliquely posteromesad. Paraapodemal lobe exposed in ventral view of hypopygium, not shown in Fig. 5 A. The dorsal mesial margin of gonocoxa with a narrower setose lobe beyond the middle and a large broad setose lobe occupying all the more apical part. One juxtagonostylar seta present: a strong megaseta, arising from a low basal body, which is scarcely more than the socket of the megaseta; this megaseta with a narrow basal half and an expanded, flattened bifurcate apical half with a third smaller branch dorsally. Gonostylus elongate, simple, the setae simple except for one apicomesial seta which is stronger than the other setosity. Tegmen triangular, with distinct lateral shoulders. Hypoproct posteriorly extending to the level of the middle of gonostylus, with about 40 scattered ventral setae on each half. Cerci separate.

Female. Similar to male. Palpomere 3 with 3 curved sensilla. Preepisternum 2 with 8 setae, laterotergite setose but it is not possible to count the number of setae in the single specimen studied, episternum 3 with 8 setae. Apical part of abdomen, Fig. 2 C: the long setae on tergite 9 arising from basal bodies, which are much longer than basally wide. Cercus two-segmented.

Discussion. M. ctenophora is similar to M. taedia . The male differs from M. taedia e.g. by having one long seta on the parastylar lobes instead of several short ones, and by having the setae on the wide dorsal apicomesial lobe of gonocoxa shorter and more robust ( Figs 5 B and 6A). Furthermore, in M. ctenophora the juxtagonostylar megaseta is three-branched and it has a long narrow basal part, whereas in M. taedia it is twobranched and the narrow basal part is very short. The females of the two species may be inseparable using current methods. The difference in the width of cercus between Figs 2 B and 2C apparently depends only on the angle of view.

M. ctenophora and M. taedia are similar to M. maorica , M. serawei and M. unifurcata because of the nonsetose anepisternum and to the first two also because of certain hypopygial characters. For further discussion, see under M. maorica and M. serawei .

Material studied. 1 male, Nouvelle. Calẻdonie, Riviẻre Bleue, Mont Pani, 164o 46’ E, 20o 35’ 30’’ S, forȇt dense humide, alt. 400 m, piẻge de Malaise (paratype, in MNHN), 1 male, Nouvelle Calẻdonie, Riviẻre Bleue, Parc 7, alt. 170 m, forȇt humide sur pente, 3/ 22.04.1987, L. Bonnet de Larbogne, J. Chazeau & A. et S. Tillier (paratype, in MNHN). 1 male, Nouvelle. Calédonie, Riviẻre Bleue, P. 7, 7–21.XI. 1988, L. Bonnet de Larbogne & J. Chazeau 525 (in MNHN). 1 female, Nouvelle Calédonie, Riviẻre Bleue, P. 7, 12–27.V.1989, 521, L. Bonnet de Larbogne & J. Chazeau (in MNHN).

Figures

FIGURE 1. Pleura, lateral view. A. Manota serawei sp. n. (holotype). B. M. explicans sp. n. (paratype). C. M. perissochaeta sp. n. (paratype). D. M. spathula sp. n. (holotype). E. M. bicuspis sp. n. (paratype). Scale 0.10 mm.

FIGURE 2. Apical part of female abdomen, lateral view. A. Manota orthacantha sp. n. B. M. taedia Matile. C. M. ctenophora Matile. D. M. spathula sp. n. E. M. explicans sp. n. F. M. serawei sp. n. Scale 0.10 mm.

FIGURE 5. Manota ctenophora Matile: A. Hypopygium, ventral view. B. Hypopygium, dorsal view. C. Juxtagonostylar megaseta, dorsal view. D. Male antennal flagellomere 4, lateral view. Scale for A, B and C 0.10 mm, for D 0.05 mm.