Cluzobra coptolithus, 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 : 13-15

Cluzobra coptolithus , sp.n.

( Figs. 10 , 27–28 )

Diagnosis. Syngonocoxite elongate, more sclerotized on distal fifth, with a short mesal notch on distal margin, bearing no spines, but with a projection on each latero–distal corner; gonostyle strongly sclerotized, triangular, enlarging to the apex, with some emargination close to apex; cercus tipically bearing a group of short spines.

Material examined. Holotype ɗ, BRAZIL, State of Alagoas, Quebrangulo, Reserva Biológica Pedra Talhada, 36° 28’ 16” W 09° 19’ 08” S, 08–11.ix.2002, Penteado–Dias & eq. cols. Paratypes. 5 ɗ, State of Paraíba, João Pessoa, Campus Universitário, 34° 49’ 60” W 07° 07’ 60” S, Malaise trap, 15.vii–15.viii.1986, D.S. Amorim col.; 1 ɗ, same data, but 15.vi–15.vii.1986; 2 ɗ, State of Paraíba, João Pessoa, Mata do Buraquinho, 34° 51’ 60” W 07° 09’ 00” S, 28–31.vii.2002, Malaise trap, S.T.P. Amarante col.; 1 ɗ, State of Pernambuco, Recife, Parque dos Dois Irmãos, 34° 55’ 59” W 08° 00’ 00” S, 20–23.vii.2002, S.T.P. Amarante & eq. cols.

Description. Male. Head. Occiput light yellowish brown, darker at vertex; mid ocellus absent, lateral ocelli closer from eye margins than ocellus diameter, ocellar area brown; front and clypeus yellowish, setose; maxillary palpus brownish yellow, 1+4 palpomeres, increasing in length to apex; labella yellowish. Scape and pedicel rounded, yellowish, setose; flagellomeres yellowish, elongated, basal third brownish, with scattered setae. Thorax. Pronotum yellowish, with some longer setae. Scutum light brown, with three light yellow, longitudinal bands (brownish band over the acrostical line absent), scattered smaller setae and some stronger acrostical and dorsocentral bristles; scutellum yellowish, six stronger scutellar bristles and some smaller setae. Pleural membrane yellowish. Proepisternum light yellowish brown. Pleural sclerites whitish yellow, mediotergite light brown, yellowish close to insertion of abdomen. Anepisternum and katepisternum bare, laterotergite setose, mediotergite with a mesal and a pair of more lateral tufts of setae. Halter yellow, setose. Legs. Legs mostly yellowish, brownish at apex of coxae and base of femora, front tibia darker; tibial spurs 1:2:2, brownish yellow, front spur more than twice front tibial width at apex. Wing ( Figure 10 ). Length, 2.8 mm. Wing mostly translucid, a darker brownish macula around base of Rs and r–m, and lighter maculae around base of medial fork, close to apex of anal lobe and at distal third of wing. Membrane bearing macrotrichia and microtrichae; humeral cell bare; basal cell elongated, with some few macrotrichia on distal half. Sc complete, short, reaching C at basal fourth of wing; R1 long, reaching C at distal third of wing; R5 relatively short, reaching C before apex of M1; C extending halfway between R5 and M1; r–m oblique, longer than r–m, but shorter than M1+2; medial fork complete; M4 entirely absent; A1 very short, scarcely visible. Abdomen. Abdominal tergites and sternites 1–7 yellowish. S8 U–shape, T8 wide and short. Terminalia ( Figures 27–28 ). Terminalia yellowish. Syngonocoxites extending to distal end of terminalia, a mesal notch on distal margin extending through a mesal suture to the anterior fourth of the terminalia. Gonostyle well sclerotized, triangular–shaped, enlarging to apex. Parameres not apparent. Aedeagus weakly sclerotized, expanded laterally at apex. T9 long, not projected ventrally at distal margin. Cercus simple, elongated, with a buntch of short spines along distal end.

Etymology. The name comes from the translation to Greek of the name of the type –locality, “Pedra Talhada”, which means “carved rock”.

Comments. The male terminalia of this species is very similar to C. aitkeni Lane. The syngonocoxite is projected to the distal end of the terminalia, with a shallow mesal notch, and the gonostyle has a triangular shape, enlarging to the apex. In his revision of the genus, Matile (1996) represented the gonostyle of the holotype of C. aitkeni and of two supposedly conspecific specimens from Brazil, and one specimen from the French Guayanne. He called attention to the variation in the shape of the gonostyle, but inferred that the differences did not seem to have specific value. The study of the specimens examined here points to the opposite conclusion, indicating that the holotype, from Trinidad, will probably belong to a different species from those represented in his drawings. These will be formally described elsewhere. The shape of the gonostyle of this species differs from all those illustrated by Matile (1996).

Figures

FIGURES 5 – 10. Wings of Cluzobra species. 5. Cluzobra triocellata, sp. n. 6. Cluzobra accola, sp. n. 7. Cluzobra lanei Edwards, specimen from Anastácio, State of São Paulo. 8. Cluzobra claripennis, sp. n. 9. Cluzobra papaveroi, sp. n. 10. Cluzobra coptolithus, sp. n., paratype from Recife, State of Pernambuco.

FIGURES 27 – 30. Male terminalia of Cluzobra species. 27. Cluzobra coptolithus, sp. n., ventral view. 28. Same, syngonocoxite plate removed. 29. Cluzobra vockerothi, sp. n., ventral view. 30. Same, syngonocoxite plate removed. Abbreviations: ae, aedeagus; ce, cercus; dc, dorsal crypt of syngonocoxite; gp, gonocoxite projection ventrad to gonostyle insertion; gs, gonostyle; s 8, sternite 8; sg, syngonocoxite; t 8, tergite 8; t 9, tergite 9.