Manota cordata, Kurina, Olavi & Hippa, Heikki, 2015

Kurina, Olavi & Hippa, Heikki, 2015, A review of the South Pacific Manota Williston (Diptera, Mycetophilidae), with the description of thirteen new species, Zootaxa 4020 (2), pp. 257-288 : 267-269

Manota cordata sp. n.

Figs 6 A–E

Male. Colour. Head brown, face somewhat paler. Antenna with scape light brown, pedicel and flagellomeres missing in holotype. Clypeus and mouthparts pale yellowish. Thorax light brown, medial part of scutum and scutellum darker. Legs yellowish, basal thirds of mid and hind femora infuscated. Wing hyaline; haltere yellow with brownish knob. Abdomen light brown, medial 2/3 of tergites darker. All setosity pale, yellowish or brownish, the thicker setae seeming darker than the finer ones. Head. Palpal segment 3 of maxillary palpus with apicomedial thumb-like extension, with three apically flattened and curved sensilla; palpal segment 4 subapically constricted, without parasegment; palpal segment 5 missing in holotype. Eleven strong postocular setae. Thorax. Anepisternum non-setose; anterior basalare non-setose; preepisternum medially with patch of 15 setae; laterotergite with 26 setae; metepisternum with 16 setae. Legs. Mid- and hind tibial organs absent. Wing. R1 meeting C within the basal half of the costal margin; the sclerotized part of M2 proximally not extending to the level of the tip of R1; wing length 1.9 mm. Hypopygium, Figs 6 A–E. Sternite 9 small, subtriangular, less than half the ventral length of gonocoxa, laterally separated from gonocoxa, anteriorly deeply incised, setae similar to ventral setae of gonocoxa. Ventromedial margins of gonocoxa almost parallel, the corner between medial and posterior margins forming a prominent subtriangular nonsetose lobe. Ventral setae of gonocoxa unmodified. Parastylar lobe weakly sclerotized, appearing as small plate at the medial gonocoxal margin, with three long setae. Paraapodemal lobe present, not clearly visible in ventral view. Dorsomedial margin of gonocoxa straight, with a setose thumb-like lobe posteriorly. The posterodorsal part of gonocoxa appears as a curved non-setose lobe which on its dorsal side is fused with a narrower setose lobe-like part. Dorsal gonocoxal setae unmodified. Gonostylus elongate oval with a thumb-like acute lobe subapically at the medial margin, setae unmodified, part of the setae at the medial margin elongated, on apicoventral and on basodorsal areas widely non-setose. One juxtagonostylar seta present as an apically expanded megaseta arising from a low socket only. Aedeagus subtriangular, with slightly expressed lateral shoulders, the apex curved ventrad. Hypoproct posteriorly scarcely extending to the base of gonostylus, its ventral part (sternite 10) with ~35 scattered setae on each half. Cerci medially separate, setose apically and dorsomedially.

Female unknown.

Discussion. Manota cordata resembles another New Guinea species, M. serawei , which it runs to in the key by Hippa (2007). However, it differs in details of male hypopygium as follows: 1) parastylar lobe with three setae (five in M. serawei ), 2) gonostylus with a subapical lobe at its medial margin (simple in M. serawei ), and 3) the dorsomedial margin of the gonocoxa has a prominent thumb-like lobe beyond the middle (in serawei the lobe is small, more like an angle on the margin). Both species belong to the group characterised by a non-setose anepisternum (or occasionally with one or a couple of setae) that includes 7 additional Oceanian species, viz. M. ctenophora and M. taedia from New Caledonia, and M. granvillensis, M. birgittae, M. maorica , M. purakaunui and M. regineae from New Zealand. Manota cordata is distinguished from the New Zealand species by the lack of the midtibial organ and in having a more simplistic gonostylus, an elongate oval with a small lobe subapically at the medial margin (in the New Zealand species the gonostylus is more complicated with one or more lobes on the dorsal/medial side). Manota cordata is distinguished from M. ctenophora and M. taedia , in having a prominent lobe at the medial margin of the gonostylus (gonostylus is simple in the other two) and simple, unbranched, juxtagonostylar megasetae.

Etymology. The name is Latin, cordata [heart-shaped] referring to the heart-shaped sternite 9.

Types. Holotype. Male, PAPUA NEW GUINEA, NE, Morobe District, Mt. Missim, 1300 m, 7–14.xii.1966, G. A. Samuelson (BPBM).

Figures

FIGURE 6. Manota cordata sp. n. (holotype). A. Hypopygium, ventral view. B. Hypopygium, dorsal view. C. Posterior part of gonocoxa, dorsal view. D. Hypoproct and aedeagus, ventral view. E. Gonostylus, dorsal view. Scale 0.1 mm.