Manota issongo Matile, 1972

Kurina, Olavi & Hippa, Heikki, 2014, The genus Manota Williston (Diptera: Mycetophilidae) in the Congo basin with description of five new species, Zootaxa 3827 (2), pp. 214-230 : 226-228

Manota issongo Matile, 1972

Figs 1 (location A), 7 A–D

Male. Colour. Head brown, face somewhat paler. Antenna light brown. Clypeus yellow, mouthparts pale yellowish. Thorax pale brown, medial part of scutum and scutellum somewhat darker. Legs yellowish, apical fourth of hind femur infuscated. Wing slightly infuscated; haltere pale brown with darker brown knob. Abdomen pale brown, tergites medially darker brown, sternites paler than tergites. All setosity pale, yellowish or brownish, the thicker setae seeming darker than the finer ones. Head. Antennal flagellomere 4 Fig. 7 A. Palpomere 3 of maxillary palpus with apicomedial thumb-like extension, with 4 apically curved sensilla; palpomere 4 with parasegment; palpomere 5 ca. 1.6 times longer than palpomere 4. Nine or ten strong postocular setae. Thorax. Anepisternum with 52–59 setae; anterior basalare non-setose; preepisternum 2 with 15–18 setae; laterotergite nonsetose; metepisternum with 25–34 setae. Legs. Mid- and hind tibial organs absent. Wing. R1 meeting C within the basal half of the costa; the sclerotized part of M2 not extending to the level of the tip of R1; wing length 2.0–2.2 mm. Hypopygium, Figs 7 B, C, D: Sternite 9 about two thirds of the length of gonocoxite, lateral margin sharply delimited, posterior margin transverse, shallowly concave, anterior margin deeply incised, the setae similar to the ventral setae of gonocoxite. Ventral medial margin of gonocoxite simple, concave; the ventral setosity of gonocoxite unmodified. Parastylar lobe subtriangular, with 2 setae on the anterior half. Paraapodemal lobe distinct even if not visible in Fig. 7 C. Dorsal medial margin of gonocoxite simple, convex, forming a rounded posteromedial angle with the posterior margin, the postero-lateral part simple; at the postero-medial angle, on the ventral side, there is a weak lobe with a conspicuous aggregation of fine setae. At the posterior margin of gonocoxite, on a more ventral level, there is a long finger-like lobe bearing one apical seta. The dorsal setosity of gonocoxite generally similar to the ventral one, but there is a very long seta at the posterior margin. Two juxtagonostylar setae present, both rather unmodified megasetae arising from a common basal body which is as long as the megasetae. Gonostylus nearly as long as gonocoxite, elongate crescent-shaped in outline, with a heel-like basomedial angle; the ventral setae of gonostylus similar to those on gonocoxite, those at the apical margin longer, the apex of gonostylus with two very long setae, the dorsal side of gonostylus largely non-setose except for the lateral margin which bears a row of very long setae, at the middle of the medial margin of gonostylus, just on the dorsal side, there are two short curved setae which deviate from the other gonostylar setosity. Aedeagus subtriangular, with distinct lateral shoulders, the apex curved ventrad. Hypoproct posteriorly extending to the base of the gonostylus, the ventral setae (sternite 10) forming a medial group of ca. 20 setae on each half. Cerci medially separate, simple, the setae confined on the apical margin, the longest ones slightly longer than the subapical width of cercus.

Discussion. After being described and illustrated from one male specimen from Maboké, Central African Republic ( Matile 1972), the species was not recorded since. We have not studied the holotype but the original drawing (cf. Matile 1972: fig. 5) is sufficiently detailed to determine conspecificity without any doubt. Because the thoracic setosity was not known, Hippa & Kurina (2012) did not include the species in the Afrotropical key, but discussed it briefly. Manota issongo runs to couplet 22 because of: 1) the non-setose laterotergite, 2) setose preepisternum 2, and 3) the gonocoxite with a finger-like lobe posterodorsally that is situated dorsally from the juxtagonostylar setae, and bears one apical seta. Manota issongo belongs to a group of five very similar Afrotropical species included in this couplet, viz. M. mabookeensis , M. dissidens , M. freerki , M. toomasi and M. redunca , but is distinguished from the others in having the gonostylus: 1) with two extremely long apical setae, and 2) the dorsal side with two short curved setae that deviate from the other gonostylar setosity. In addition, at the postero-medial angle, on the dorsal side of gonocoxite, is a weak lobe with a conspicuous aggregation of fine setae that is missing in case of other species of the group.

Material examined. DRC ( Congo Belge), P.N.G./Miss. H.De Saeger/PpK.12/d/9, 2 -1-1952/Rec. H.De Saeger. 2972 (1♂ on slide, RMCA); same data except II/gd/17, 30 -VI-1952/Rec. H.De Saeger. 3719 (1♂ on slide, RMCA); same data except II/le/8, 9 -IX-1952/Rec. H.De Saeger. 4040 (2♂ on slides, 3♂ pinned, IZBE; 2♂ pinned with hypopygium in glycerine, 8♂ pinned, RMCA); same data except II/fd/17, 31 -VIII-1951/Rec. H.De Saeger. 2341 (1♂ on slide, RMCA); same data except PpK/60/d/8, 18 -XII-1951/Rec. H.De Saeger. 2925 (1♂ on slide, RMCA); same data except Pp.K.72, 27 -VIII-1951/Rec. H.De Saeger. 2338 (1♂ on slide, RMCA); same data except II/dd/9, 7 -VII-1952/Rec. H.De Saeger.3758 (1♂ on slide, RMCA); same data except II/gc/9, 20 -X-1951/Rec. H.De Saeger. 2651 (1♂ on slide, RMCA); same data except II/gc/8, 9 -IX-1952/ H.De Saeger. 4042 (1♂ pinned with hypopygium in glycerine, 1♂ pinned, IZBE: 3♂ pinned, RMCA); same data except II/gd/8, 24 -IX-1952/ H.De Saeger. 4085 (1♂ pinned with hypopygium in glycerine, RMCA); same data except II/fd/17, 13 -VIII-1951/Rec. H.De Saeger. 2247 (1♂ pinned, RMCA); same data except II/fc/17, 25 -IX-1951/Rec. H.De Saeger. 2471 (1♂ pinned, RMCA); same data except II/je/8, 15 -X-1951/Rec. H.De Saeger. 2600 (1♂ pinned, RMCA); same data except II/gc/9, 20 -X-1951/ Rec. H.De Saeger. 2651 (3♂ pinned, RMCA); same data except II/Pp.K.52/d/9, 28 -X-1951/Rec. H.De Saeger. 2679 (3♂ pinned, RMCA); same data except II/id/9, 31 -X-1951/Rec. H.De Saeger. 2709 (1♂ pinned, RMCA); same data except II/hc/8, 12 -XII-1951/Rec. H.De Saeger. 2902 (1♂ pinned, RMCA); same data except PpK.12/d/9, 2 -I-1952/Rec. H.De Saeger. 2972 (1♂ pinned, RMCA); same data except II/id/9, 2 -VII-1952/Rec. H.De Saeger. 3720 (1♂ pinned, RMCA); same data except II/dd/9, 7 -VII-1952/Rec. H.De Saeger. 3758 (1♂ pinned, RMCA); same data except II/gc/9, 10 -VII-1952/Rec. H.De Saeger. 3765 (2♂ pinned, RMCA); same data except PpK.8/9, 15 -VII-1952/Rec. H.De Saeger. 3792 (1♂ pinned, RMCA); same data except II/jd/9, 16 -VIII-1952/Rec. H.De Saeger. 3944 (1♂ pinned, RMCA); same data except II/fd/17, 27 -VIII-1952/Rec. H.De Saeger. 3983 (1♂ pinned, RMCA); same data except PpK.9/g//9, 10 -IX-1952/Rec. H.De Saeger. 4044 (1♂ pinned, RMCA); same data except II/gd/4, 18 -IX-1952/Rec. H.De Saeger. 4077 (1♂ pinned, RMCA).

Figures

FIGURE 1. Number of Manota species known to occur in countries of the Afrotropics, with number of endemic species noted in parentheses. Collecting localities in DRC: A Garamba National Park (P. N. G. on labels), B Kona on Itimbiri river, C Yangambi National Park, D Albert National Park (P. N. A. on labels), E Upemba National Park (P. N. U. on labels).

FIGURE 7. Manota issongo Matile. A. Antennal flagellomere 4, lateral. B. Hypopygium, dorsal. C. Hypopygium, ventral. D. Aedeagus and hypoproct, ventral. Scale 0.1 mm.