Manota digitata, Hippa, Heikki, Kurina, Olavi & Sääksjärvi, Ilari E., 2017

Hippa, Heikki, Kurina, Olavi & Sääksjärvi, Ilari E., 2017, The genus Manota Williston (Diptera: Mycetophilidae) in Peruvian Amazonia, with description of sixteen new species and notes on local species richness, Zootaxa 4236 (1), pp. 1-40 : 12-14

Manota digitata sp. n.

Figs 7 A–C

Male. Colour. Head blackish brown, face somewhat paler to yellow. Antenna including scape and pedicel brown, two apical flagellomeres somewhat paler. Clypeus and mouthparts pale yellowish. Thorax brown, medial part of scutum and scutellum somewhat darker. Legs yellowish, apical fourth of hind femur infuscated. Wing with smoky tinge; haltere yellow with blackish brown knob. Abdomen light brown, medial 2/3 of tergites dark brown. All setosity pale, yellowish or brownish, the thicker setae seeming darker than the finer ones. Head. Fourth antennal flagellomere 1.3 times as long as broad. Palpal segment 3 of maxillary palpus with apicomedial thumb-like extension, with three apically curved and flattened sensilla; palpomere 4 with parasegment; palpomere 5 about 1.2 times longer than palpomere 4. Nine strong postocular setae. Thorax. Anepisternum with 36–49 setae; anterior basalare and preepisternum 2 non-setose; laterotergite with 19–27 setae; metepisternum with 13–17 setae along its margin. Legs. Mid- and hind tibial organs absent. Wing. R1 meeting C within the basal half of the costal margin; the sclerotized part of M2 not extending to the level of the tip of R1; wing length 1.7–1.9 mm. Hypopygium. Figs 7 A–C: Sternite 9 short and broad, the lateral margin rounded, posterior margin broadly and deeply concave, not extending to the middle between the anterior margin of gonocoxa and the base of gonostylus, anterior margin deeply incised medially, the setae similar to the adjacent ventral setae of gonocoxa. Ventral medial margin of gonocoxa anteriorly from the gonostylus simple, the posterolateral part drawn into a lobe, the ventral setae of gonocoxa unmodified. Parastylar lobe long, parallel with the medial margin of gonocoxa, with two setae at the medial margin. No paraapodemal lobe identifiable. Dorsal medial margin of gonocoxa simple, slightly concave. The dorsal gonocoxal setosity similar to the ventral one but with a few longer setae on posterior part. Posteriorly at the dorsal medial margin of gonocoxa, on a more ventral level with a plate-like lobe bearing several strong setae. Two juxtagonostylar setae present, one is a rather unmodified megaseta, the other is a broad and flat megaseta with a seta-like branch, both megasetae arise from a common basal body that is as long as the megasetae. Gonostylus elongate oval, with a patch of few setae at the medial margin on the ventral side and with one longer and three shorter dorsally curving setae at apicolateral margin, the sockets of these setae being prominent. Aedeagus subtriangular, with ventral membranous structures that cannot be seen in details; in Fig. 7 C the medially visible part is the ejaculatory apodeme; the apex curved ventrally. Hypoproct extending posteriorly to the apices of gonostyli, the number of ventral setae (sternite 10) ca. 15 on each half. Cerci medially separate.

Female. Unknown.

Discussion. Manota digitata belongs to a large group of Neotropical species that have a setose laterotergite and long posterolateral lobes on the gonocoxa. Within this group M. digitata shares a well-developed sternite 9, i.e. the sternite has a distinct and long lateral margin, with only a few species, viz. M. aligera , M. anfracta , M.

bihamata , M ciliata , M. incisa , M. micella , M. micula , M. penicillata and M. spinosa . However, M. ciliata is otherwise clearly distinguished by 1) a very broad parastylar lobe that is as broad as the space between sternite 9 and the base of gonostylus and 2) a dorsally curving setae with prominent finger-like sockets on the apicolateral margin of the gonostylus. The broad parastylar lobe of M. digitata is similar to M. inermis , but the latter has a nonsetose laterotergite, non-setose parastylar lobe, the setae on the gonostylus unmodified, and the posterior margin of sternite 9 straight.

Etymology. The name is Latin, digitata , ‘having fingers’, referring to the finger-like setae on the gonostylus.

Types. Holotype. Male, PERU, Department of Loreto, Iquitos area , Mishana , 16.xii.1998 – 1.i.1999, Malaise trap A2, I. E. Sääksjärvi et al. leg. (on slide, UNSM). Paratype. 1 male, same data as holotype except 16.xii.1998 – 1.i.1999, Malaise trap A1 (on slide, ZMUT).

Figures

FIGURE 7. Manota digitata sp. n. (holotype). A. Hypopygium, ventral view. B. Hypopygium, dorsal view. C. Hypoproct and aedeagus, ventral view. Scale 0.1 mm. aed = apex of aedeagus, aeda = aedeagal apodeme, ce = cercus, dm = dorsal medial margin of gonocoxa, eja = ejaculatory apodeme, gs = gonostylus, gx = gonocoxa, gxa = gonocoxal apodeme, hpr = hypoproct, jxs = juxtagonostylar seta, psl = parastylar lobe, st 9 = sternite 9, vm = ventral medial margin of gonocoxa.