Bruggmanniella miconiae Carvalho-Fernandes, Maia & Rodrigues, 2020

Rodrigues, Alene Ramos, Carvalho-Fernandes, Sheila Patrícia, Maia, Valéria Cid & Oliveira, Lázaro Araújo, 2020, Three new species of Bruggmanniella Tavares, 1909 (Diptera, Cecidomyiidae) from Brazil with a key to species, Revista Brasileira de Entomologia (e 201917) 64 (1), pp. 1-8 : 2-3

Bruggmanniella miconiae Carvalho-Fernandes, Maia & Rodrigues new species urn:lsid:zoobank.org:act:E271753A-DD62-421B-8516-44D563D5237C .

( Figs. 2 and 3 )

Diagnosis. Palpus one-segmented, male hypoproct deeply bilobed, ovipositor rigid portion 1.6-1.9 length of 7 th sternite, antennal horns 0.23-0.26 mm long with micro serrated margin, apical plate and prothoracic integument with short spines, spatula four-toothed.

Adult. Body length: 1.96 – 2.32 mm in male (n = 3); 2.42 – 2.86 mm in female (n =3, from head to eighth segment). Head ( Fig. 2a ): eyes totally separated in vertex, facets circular, closely approximated, except in the vertex. Antenna: scape obconic about 1.7 times length of the ovoid pedicel; flagellomeres cylindrical with bare necks in both sexes and the last one with an apical projection, first flagellomere 1.2 – 1.5 times as long as the second one in male (n = 4), and 1.3 – 1.6 in female (n = 4). Male flagellomeres ( Fig. 2b ) with slightly wavy circumfila and female flagellomeres ( Fig.2c ) with two connected ring-like circumfila. Frontoclypeus with 30 – 34 setae.Labrum glossiform with rounded base, long attenuate. Hypopharynx triangular longer than labrum, apically. Labellae elongate-convex, each with three pairs of short mesal setae and few lateral setae. Palpi with one segment, ovoid in six specimens (five males and one female) ( Fig. 2d ) or claviform in three specimens (all females) ( Fig. 2a ). In a single female, the left palpus is claviform, while the right is ovoid.

Thorax: Wing length: 1.7 – 1.8 mm in male (n = 4), and 1.9 – 2.1 mm in female (n = 4); R 5 joining C beyond wing apex. Anepimeron setose. Another pleura bare. Tarsal claws simple, curved beyond midlength, empodia long reaching bend in claws ( Fig. 2e ).

Male abdomen ( Fig.2f ): 1 st – 7 th tergites rectangular with a posterior row of setae, lateral row of setae, one anterior pair of trichoid sensilla, and elsewhere with scattered setulae. 8 th tergite not sclerotized and one anterior pair of trichoid sensilla. 1 st – 6 th sternites rectangular with a posterior row of setae, lateral row of setae, some mesal setae, one anterior pair of trichoid sensilla, and elsewhere covered with setulae.7 th sternite rectangular with a posterior row of setae, lateral setae, mesal setae distributed until proximal margin, one anterior pair of trichoid sensilla, and elsewhere covered with setulae. 8 th sternite rectangular, setose and covered with setulae. Terminalia ( Fig. 2g ): gonocoxite cylindrical, about 2.2 times length of gonostylus; gonostylus cylindrical with some long setae, gonostylus teeth triangular, in lateral view; cerci wide setulose with divergent lobes and with setae only apically; hypropoct slightly smaller than cerci, deeply bilobed, with two to three strongly setae apically and microsetulae, aedeagus cylindrical longer than hypropoct.

Female abdomen ( Fig. 2h ): 1 st – 7 th tergites as in male. 8 th tergite rectangular with recess with scattered setulae. 1 st – 6 th sternites as in male. 7 th sternite from 2.8 to 3.9 as long as sternite 6 (n = 4), strongly sclerotized, and completely covered with setae. 8 th sternite unsclerotized. Ovipositor: base pyriform, rigid portion 1.6 – 1.9 times as long as 7 th sternite (n= 4).

Pupa. Body length: 2.31 – 3.11 mm (n = 5). Cephalic region ( Fig.3a ): antennal horns, with 0.23 – 0.26 mm of length and 0.09 – 0.12 mm of basal width, triangular, concave, with micro-serrated margin; cephalic setae 0.07 mm of length (n = 5); frontal region with two pairs of lower papillae, one setose and the other bare, lateral papillae not visible, upper facial margin thickened laterally, apical plate integument with numerous short spines ( Fig.3b ). Prothoracic spiracle setiform (straight or curved), 0.14 – 0.17 mm of length (n = 5) ( Figs. 3a and b ). Prothoracic integument with numerous short spines ( Fig. 3b ). 3 rd – 9 th abdominal segments with numerous dorsal spines ( Fig. 3c ). Abdominal spiracles conical on 3 rd – 8 th segments, length of abdominal spiracle 5: 0.05 – 0.07 mm (n = 5). Terminal abdominal segment bilobed in male ( Fig. 3d ) and rounded in females, with several dorsal spines.

Larva. white, body cylindrical, rounded anteriorly and tapered posteriorly, length: 2.3 – 2.4 mm (n = 2), integument grainy. Prothoracic spatula length, 0.25 – 0.31 mm (n = 5), width 0.12 – 0.14 (n = 4), with 4 acute teeth, the inner ones longer than the outer ones, and stalk thin; three lateral setose papillae on each side of spatula ( Fig. 3e ). Terminal segment rounded without visible papillae.

Material examined. Holotype: Male, BRAZIL, Minas Gerais, Dores do Indaiá city, ii.2009, Oliveira, L.A. col.. Paratypes: same locality, data and collector: 4 males, 5 females, 4 pupal exuvia and 5 larvae .

Additional material examined: Same locality, data and collector: 4 males, 6 females, and 14 pupal exuvia.

Gall. on stems of M. theaezans, globoid, brown, glabrous, and one-chambered, with a single larva inside.The gall develops gregariously, resembling a grape bunch, ( Fig. 1a ). Pupation takes place inside the gall. The galls are induced at the beginning of raining season from November to December and its maturation occurs during from the end of January to February. When induced in young branches, these galls cause dryness and branch break.

Etymology. The specific name is the genitive of the host plant genus.

Remarks. This new species is unique in having eyes totally separated in the vertex; one-segmented palpus, ovipositor 1.6-1.9 as long as 7 th sternite. This is the first Bruggmanniella species associated with Melastomataceae .

Figures

Figure 1. Galls of Bruggmanniella (Diptera, Cecidomyiidae). a) Stem gall on Miconia theaezans (Bonpl.) Cogn (Melastomataceae) induced byB. miconiaenew species,arrows pointing pupal exuviae.b) Fruit gall on Ocotea notata (Nees and Mart.) Mez (Lauraceae) induced by B.notatae new species.c) Fruit gall onSideroxylon obtusifolium (Roem.and Schult.) T. D.Penn. (Sapotaceae) induced by B. sideroxyli new species.

Figures 2. Bruggmanniellamiconiae new species:a) female head,frontal view;b) male flagellomere 9; c) female flagellomere 5; d) male, ovoid palpus; e) female, tarsal claw and empodium of midleg; f) male, abdominal segments 6–8, lateral view; g) male, terminalia, dorsal view; h) female, abdominal segments 5–8, dorsolateral view, detail with sternites 6–7, ventral view. Scale bars in millimeters (mm).

Figures 3. Bruggmanniella miconiae new species:a) pupa,cephalic regionand prothoracic spiracle, frontal view; b) pupa, apical plate with integument detail and prothoracic right side, dorsal view; c) pupa, abdominal segment 5 with dorsal spines, dorsolateral view;d) pupa male,terminal segment,lateral view;e) larva,spatula,lateral and sternal papillae, ventral view. Scale bars in millimeters (mm).