Cluzobra fluminense, Amorim, Dalton De Souza & Oliveira, Sarah Siqueira, 2008

Amorim, Dalton De Souza & Oliveira, Sarah Siqueira, 2008, Eleven new species of the genus Cluzobra Edwards (Diptera, Mycetophilidae, Sciophilinae) from the Atlantic Forest of Brazil, Zootaxa 1920, pp. 1-28 : 18-19

Cluzobra fluminense , sp.n.

( Figs. 13 , 32 )

Diagnosis. Syngonocoxite short, entirely divided by a mesal notch on distal margin, bearing a digitiform projection with a pair of short spines at the apex; gonostyle weakly sclerotized, with no spines or projections; parameres well sclerotized; tergite 9 projected ventrally at distal margin, but with no spines.

Material examined. Holotype ɗ, BRAZIL, State of Rio de Janeiro, Nova Iguaçu, Reserva Biológica do Tinguá, 22° 34’ 37” S 43° 26’ 05” W, 05–08.iii.2002, S.T.P. Amarante & eq. cols.

Description. Male. Head. Occiput light yellowish brown, setose; mid ocellus absent, lateral ocelli closer from eye margins than diameter of ocellus, ocellar area brown; front and clypeus yellowish, setose; maxillary palpus brown, 1+4 palpomeres, increasing in length to apex, setose; labella yellowish, except for the brownish sclerite of basal article. Scape and pedicel rounded, yellowish, setose; flagellomeres yellowish, elongated, basal half brownish, setose. Thorax. Pronotum yellowish, with some longer and other smaller setae. Scutum brown, with four longitudinal yellowish bands intertwined with brownish bands, smaller setae scattered and some stronger acrostical and dorsocentral bristles; scutellum yellowish brown, with brown posterior margin, six stronger scutellar bristles and some smaller setae. Pleural membrane yellowish. Proepisternum light yellowish brown. Anepisternum and katepisternum yellowish brown, mesepimeron yellowish, laterotergite brownish, mediotergite brownish. Anepisternum and katepisternum bare, laterotergite setose, mediotergite with a mesal and a pair of more lateral tufts of setae. Halter yellowish, setose. Legs. Coxae light brown, hind coxae lighter basally, fore and mid femora light brown, hind femur yellowish, with base and apex brownish, tibiae and tarsi yellowish brown, base of hind tibia darker; tibial spurs 1:2:2, yellowish, front spur more than twice front tibial width at apex. Wing ( Figure 13 ). Length, 2.6 mm. Maculation pattern similar to C. sapiranga , sp.n. Membrane with macro and microtrichia; humeral cell bare of macrotrichia; basal cell with macrotrichia on distal half. Sc complete, reaching C at basal third of wing; R1 long, reaching C at distal third of wing; R5 reaching C before apex of M1; C extending about a third the distance between R5 and M1; r–m oblique, longer than base of Rs; M1+2 longer than r–m; medial fork complete; M4 entirely absent; A1 very short, scarcely visible. Abdomen. Abdominal tergites and sternites 1–7 brown. S8 U–shape, T8 wide and short. Terminalia ( Figure 32 ). Terminalia yellowish brown. Similar to C. sapiranga , sp.n., but gonostyle smaller, and latero–posterior projections of T9 smaller, setose, but without spines. Gonocoxite bearing a digitiform projection with a pair of short spines at the apex.

Etymology. The name of this species is feminine and refers to those born in the State of Rio de Janeiro.

Comments. As commented above, this species seems to fit into a clade with C. fuscipennis , C. plaumanni and C. binocellaris . The shape of the gonostyle, the lack of spines on T9 and the shape of the parameres allow the differentiation of C. fluminense from the species of the binocellaris – group and from C. sapiranga , sp.n..

Figures

FIGURES 11 – 19. Wings of Cluzobra species. 11. Cluzobra vockerothi, sp. n. 12. Cluzobra sapiranga, sp. n. 13. Cluzobra fluminense, sp. n. 14. Cluzobra binocellaris (Edwards). 15. Cluzobra fuscipennis Edwards, specimen from Embu, State of São Paulo. 16. Cluzobra plaumanni Edwards, specimen from Nova Teutônia, State of Santa Catarina. 17. Cluzobra fritzmuelleri, sp. n. 18. Cluzobra spinata, sp. n. 19. Cluzobra elpidia, sp. n.

FIGURES 31 – 34. Male terminalia of Cluzobra species. 31. Cluzobra sapiranga, sp. n., ventral view. 32. Cluzobra fluminense, sp. n., ventral view. 33. Cluzobra fritzmuelleri, sp. n., ventral view. 34. Same, syngonocoxite plate removed. Abbreviations: ae, aedeagus; ce, cercus; dc, dorsal crypt of syngonocoxite; gvp, gonocoxal ventro – distal projections; gs, gonostyle; pa, paramere; s 8, sternite 8; sg, syngonocoxite; t 8, tergite 8; t 9, tergite 9.