Dasineura tavaresi Maia, 1996

Carvalho-Fernandes, Valéria Cid Maia and Sheila Patrícia, 2025, Two new species of Dasineura (Diptera: Cecidomyiidae) from the Neotropics and new morphological data on Dasineura tavaresi, Zoologia (e 24033) 42, pp. 1-16 : 12

Dasineura tavaresi Maia, 1996

Figs. 7–8

Male ( Fig. 7A–G ): Body: 2.20–2.50 mm long. Head ( Fig. 7A ) globoid, 0.27 mm long, 0.31 mm wide (N = 1); eye facets circular, closely appressed, except laterally and at vertex; antenna: scape wider apically than basally, 0.06 mm long, 0.06 mm wide, pedicel globoid, 0.04–0.05 mm long, 0.05 mm wide (N=2), 13 flagellomeres, 1 st and 2 nd flagellomeres fused, 0.18 mm long, 3 rd –8 th flagellomeres 0.10–0.11 mm long, 9 th flagellomere 0.10 mm long,10 th –13 th progressively shorter, 10 th flagellomere 0.09 mm long, 11 th 0.08 mm long, 13 th flagellomere 0.05 mm long, 2 nd –13 th flagellomeres each consisting of node and neck, nodes cylindrical, setulose, necks elongate, bare, 13 th flagellomere conical, without apical process ( Fig. 7B ); circumfila composed of two horizontal rings connected by two longitudinal bands ( Fig. 7C ), proportion node/neck: 2/1; mouth parts: labrum long-attenuate, with three pairs of setae; hypopharynx of the same shape of labrum, with long lateral setulae anteriorly directed, 0.12 mm long; palpus four-segmented, 1 st segment globoid, shorter than others, 0.03 mm long, 2 nd 3 rd and 4 th segments cylindrical and progressively longer, 2 nd segment 0.04 long, 3 rd segment 0.06 mm long, 4 th segment 0.07 mm long; labella pointed distally, 0.06 mm long, with lateral and mesal setae. Thorax: scutum with two dorsocentral rows of setae, lateral groups of setae on each side, setae more abundant anteriorly, scales intermixed; scutellum with setae only in the basal half; anepimeron with a longitudinal row of setae and some scales, other pleura bare; wing 1.50–1.52 mm long, 0.75–0.85 mm wide, C with break at juncture with R5, Rs reduced to bend on R5, Cu forked ( Fig. 7D ); tarsal claws one-toothed, curved beyond midlength, empodia about as long as claws ( Fig. 7E ). Abdomen ( Fig. 7F ): sclerites with basal pair of trichoid sensillae, except 8 th sternite; 1 st –6 th tergites rectangular with scattered scales, few lateral setae, posterior row of setae; 7 th tergite with few lateral, pair of trichoid sensillae and no caudal setae, 8 th tergite band-like, with only trichoid sensillae as vestiture; 2 nd –7 th sternites rectangular, with scattered scales, mesal and posterior row of setae, few lateral setae, 7 th and 8 th sternites with setae of posterior row more abundant than in the others sternites, few lateral setae. Male terminalia ( Fig. 7G ): gonocoxite cylindrical, setose and setulose; gonostylus claviform, larger basally and tapering towards apex, setulose in the basal third, striated elsewhere, with scattered short setae, and apical claw; cerci entirely setulose, lobes wide, rounded, with several apical setae; hypoproct entirely setulose, bilobed, lobes relatively slender, rounded at apex, one seta on each lobe; parameres slightly shorter than aedeagus, entirely setulose, with setose papillae on each lobe apically; aedeagus cylindrical, rounded at apex.

Gall ( Fig. 8 ). Leaf marginal roll, green, glabrous. The gall is occupied by a single gall-inducing larva.

Material examined. Brazil, RJ, Maricá, APA de Maricá, 30.IV.1990, V. Maia col., 1♂, ( MNRJ-ENT1-67328 ); same local and collector, 30.V.1990 ( MNRJ-ENT1-67327 ) .

Geographical distribution. Brazil, Rio de Janeiro, São João da Barra, Carapebus, Arraial do Cabo, Cabo Frio, Araruama, Maricá.

Remarks, During the examination of the type material of Dasineura tavaresi , we noticed an error in the holotype label data. The collecting date is 17.XII.1987 and not 10.IV.1987 as published in Maia (1996).

Figures

Figure 7.Dasineura tavaresi male: (A) head, ventralview,(B) three last flagellomeres,(C) 5th flagellomere, (D) wing, (E) foreleg, tarsal claw and empodium, ventral view, (F) abdomen, 7thand 8th segments, lateral view, (G) male terminalia, dorsal view.

Figure 8. Dasineura tavaresi: gall, general aspect. Scale bar: 0.60 cm.