Manota falcata, 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 : 41-43

Manota falcata sp. n.

Figs. 2 A–E

Male. Colour. Head pale brown, frons, vertex and dorsal part of occiput darker brown. Antennal scapus, pedicellus and one or two basal flagellomeres pale brown, the rest of flagellum darker brown. Mouthparts pale yellowish.

Thorax pale brown, posterodorsally brown, ventral part of preepisternum 2 paler than the other parts of pleura. Legs pale yellowish, femur 3 infuscated on apical third, in some specimens also weakly at base and tibia 3 infuscated at base. Wing unicolorous greyish-brown; haltere pale yellowish-brown with blackish 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, Fig. 2 A. Palpomere 3 of maxillary palpus with apicomesial thumb-like extension, with 4–5 apically expanded curved sensilla; palpomere 4 with parasegment, palpomere 5 ca. 1.5 times longer than palpomere 4. Number of strong postocular setae 9–12. Thorax. Anepisternum setose, with 25–37 setae, anterior basalare setose, with 5–8 setae, preepisternum 2 setose, with 19–29 setae, laterotergite nonsetose, episternum 3 setose, with 8–10 setae. Legs. Middle tibial organ lacking. Wing. R1 meeting C well on the basal half of the costal margin; the sclerotized part of M2 basally extending to the level of the tip of R1, wing length 1.4–1.6 mm. Hypopygium, Figs. 2 B–E: Sternite 9 about half the ventral length of gonocoxa, lateral margin sharply delimited, posterior margin with a v-shaped medial notch, anterior margin deeply incised, the setae similar to the adjacent ventral setae of gonocoxa. Ventral mesial margin of gonocoxa simple, sigmoid. Parastylar lobe in anterior-posterior direction very long, ca. 4 times longer than broad, the anterior end curved mesiad, with 3– 5 setae, all on the curved anterior part. Paraapodemal lobe large, 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; the latter covering a plate-like more ventral lobe with 3–4 ventrally directed setae. Two juxtagonostylar setae present, one rather unmodified megaseta, the other one a geniculate megaseta, both arising from a common basal body which is ca. one third of the length of the setae. Gonostylus simple, elongate, the mesial margin angularly convex so that the gonostylus is widest at ca. apical third, the ventral side evenly covered with rather short setae, the setae at the mesial margin not much different from the ventral ones except for a few a little thicker ones on apical part, the setae on the dorsal side rather short, unmodified, placed in an oblique stripe. Aedeagus with strong lateral shoulders, the broad basal part unusually long, the narrow apical third with a small transverse lobe at the middle, the apex directed posteriad, asymmetrical. Hypoproct posteriorly extending to middle of gonostylus, in Fig. 2 C unusually extruded posteriad, without a crescentshaped plate posteriorly, the posterodorsal setae many, not especially strong, ventrally with ca. 10 fine setae in an oblique stripe on each half. Cerci mesially separate.

Female unknown.

Discussion. Manota falcata is similar to M. mirifica and M. submirifica , but is distinguished by having the anterior end of the parastylar lobe curved mesiad and by having the mesial margin of the gonostylus angularly convex instead of being straight. The three species differ from the very similar M. aconcinna , M. chi , M. collina , M. clavulosa , M. indahae , M. planilobata , M. seducta and M. subcollina by having the parastylar lobe in the anteriorposterior direction unusually long and the aedeagal apex asymmetrical.

Etymology. The name is Latin, falcata , sickle-shaped, referring to the shape of the parastylar lobe.

Types. Holotype. Male, THAILAND, Surat Thani, Khao Sok NP, Bang Huaraed, 854.555'N 9830.522'E, 122 m, Malaise trap 14–21.x.2008, Pongphan leg., T3403 (in QSBG).

Paratypes. 2 males with same data as holotype except 21–28.x.2008, T3404 and 4–21.xi.2008, T3406 (in QSBG). 1 male with same data except Khao Sok NP, Headquarter, 854.896'N 9831.81'E, 115 m, Malaise trap 14– 21.x.2008, T3399 (in QSBG and SMNH). 1 male, THAILAND, Nakhon Si Thammarat, Namtok Yong NP, Road to Khao Mhen, 150 m from Nern499, 816.959'N 9939.149'E, 499 m, Malaise trap 27.viii–3.ix.2008, Samnaokan, S. leg., T3534 (in QSBG).

Figures

FIGURE 2. Manota falcata sp. n. (holotype). A. Antennal flagellomere 4, lateral view. B. Hypopygium, dorsal view. C. Hypopygium, ventral view. D. Gonostylus, dorsal view. E. Apical part of aedeagus, ventral view. Scale 0.10 mm. aed = aedeagus, ce = cercus, gs = gonostylus, gx = gonocoxa, gx a = gonocoxal apodeme, gx d = dorsal mesial margin of gonocoxa, gx l = lobe at dorsal mesial margin of gonocoxa, gx v = ventral mesial margin of gonocoxa, hpr = hypoproct, jx s = juxtagonostylar setae, jx b = basal body of juxtagonostylar setae, pa l = paraapodemal lobe, pl l = plate-like lobe, ps l = parastylar lobe, st 9 = sternite 9, tg 9 = tergite 9.