Manota subcollina, Hippa, Heikki, 2011

Hippa, Heikki, 2011, New species and new records of Manota Williston (Diptera, Mycetophilidae) from Thailand, with a key to the Oriental and Palaearctic species, Zootaxa 2763, pp. 39-60 : 44-46

Manota subcollina sp. n.

Figs. 4 A, B, C

Male. Colour. Head pale brown, frons, vertex and dorsal part of occiput darker brown. Antenna brown, scapus, pedicellus, flagellomere 1 and flagellomere 14 a little paler than the other parts. Mouthparts pale yellowish, but palpomeres 3, 4 and 5 broken off. Thorax brown, ventral part of preepisternum 2 paler yellowish. Legs pale yellowish, trochanters 2 and 3 indistinctly and the base of femur 2 and 3 slightly infuscated, apical third of femur 3 infuscated. Wing weakly bicolorous being paler yellowish brow basally and darker greyish brown apically, similar to M. collina ( Hippa 2009: fig. 1 E); haltere yellowish-brown with dark brown knob. Abdominal tergites dark brown, sternites pale brown. All the setosity pale, yellowish or brownish, the thicker setae seeming darker than the finer setae and trichia. Head. Antennal flagellomere 4 not seen in lateral or mesial direction in the single specimen, apparently about 1.5 times longer than broad. Palpomeres 3–5 of the maxillary palpus broken off on both sides in the single specimen. Number of strong postocular setae 10. Thorax. Anepisternum setose, with ca. 40 setae, anterior basalare setose, with 6 setae, preepisternum 2 setose, with 32 setae, laterotergite nonsetose, episternum 3 setose, with ca. 3 setae. Legs. Middle tibial organ lacking. Wing. Length 1.9 mm. Hypopygium, Figs. 4 A, B and C: Sternite 9 about one-half of the ventral length of gonocoxa, lateral margin sharply delimited, posterior margin deeply emarginated, anterior margin deeply incised, the setae similar to the ventral setae of gonocoxa but slightly longer at the posterior margin. Ventral mesial margin of gonocoxa simple. Parastylar lobe large, subtriangular, the apex directed mesiad, with ca. 10 setae. Paraapodemal lobe distinct and well exposed in ventral view. Dorsal mesial margin of gonocoxa simple, subapically with a broad thumb-like lobe with numerous setae at the mesial margin and a long seta arising from a large basal body at the lateral margin. Ventro-mesially from the latter a plate-like lobe with ca 8 thick megaseta-like setae. Two juxtagonostylar setae present, one of these a very strong but otherwise unmodified seta, the other a strong curved megaseta, without a distinct common basal body. Gonostylus simple, mesial margin angularly convex, the setae on the ventral side evenly distributed, rather long, subapically with a few stronger setae at the mesial margin, the marginal setae on the apical half of gonostylus long, on the dorsal side with a few long lateral and subapical mesial setae and a longitudinal patch of shorter setae associated with several slightly tuberculate areas on the surface of gonostylus. Aedeagus elongate subtriangular, without prominent lateral shoulders, the apex straight, not bent ventrad. Hypoproct posteriorly extending near the middle of gonostylus, each side dorsally with 4 conspicuously strong setae and ventrally with a mesial row of 3 very strong setae and ca. 5 weak setae in a more lateral position. Cerci medially separate.

Female unknown.

Discussion. Manota subcollina is similar to M. collina known from Thailand. It is distinguished by the narrow transverse subtriangular parastylar lobe instead of a broad, rounded one, and by the shape of the gonostylus which is not parallel sided subquadrangular as in M. collina , but has the mesial margin angularly convex, which makes the gonostylus broader at the middle than at the ends. The two species differ in many other characters, but they are difficult to quantify: in M. subcollina the hypoproct has the dorsal and the ventro-mesial setae stronger and the ventrolateral setae weaker, the juxtagonostylar megaseta is strongly curved, but not angulate, the setae on the lobe at the dorsal mesial margin of gonocoxa are stronger and the aedeagus is narrower. M. subcollina and M collina are similar to M. aconcinna , M. chi , M. clavulosa , M. falcata , M. indahae , M. mirifica , M. planilobata , M. seducta and M. submirifica . Among them, M. subcollina and M. collina are the only species with a bicolorous wing and M. subcollina the only species with a transverse subtriangular parastylar lobe.

Etymology. The name is Latin and formed from the specific epithet of M. collina by the prefix sub-, somewhat, referring to the similarity of the two species.

Types. Holotype. Male, THAILAND, Nan Doi, Phu Kha NP, Office 13, 1912.605'N 1015.074'E, 1371 m, Malaise trap 1–8.xii.2007, Charoen & Nikom leg., T3273 (in QSBG).

Figures

FIGURE 4. Manota subcollina sp. n. (holotype). A. Hypopygium, ventral view. B. Hypopygium, dorsal view. C. Gonostylus, dorsal view. Scale 0.10 mm.