Bruggmannia monteiroi Maia & Couri, 1993

Maia, Valéria Cid, Jr, Milton de Souza Mendonça & Espinheira, Ivana Hortélio Leão, 2023, Three new species of Bruggmannia Tavares, 1906 (Diptera: Cecidomyiidae) from Brazil and description of male and larva of B. monteiroi Maia & Couri, 1993, Revista Brasileira de Entomologia (e 20220097) 67 (1), pp. 1-19 : 11-16

Bruggmannia monteiroi Maia & Couri, 1993

Male description. Adult. 2.95-3.40 mm long (n=3). Head ( Fig. 14a ): eye facets circular, closely appressed; antennae:scape trapezoidal, setose, pedicel globoid, setose, flagellomeres cylindrical, with microtrichose node and glabrous neck, flagellomere node 6.5 times the length of neck; 1 st and 2 nd flagellomeres connate; circumfila wavy ( Fig. 14b ); frons with 26 setae (n=1); mouth parts: labrum long-attenuate; hypopharynx of the same shape of labrum, with long anteriorly directed lateral setulae; labella elongate-convex, with lateral and three mesal setae each; palpus: 1 st segment and, 2 nd segment ovoid, subequal in lenght, 3 rd segment cylindrical, about 1.5-2.25 times the length of 2 nd segment (n=3), all segments with setae and scales. Thorax:scutum with two dorsocentral rows of setae, setae more abundant anteriorly, two groups of lateral setae with scales intermixed; scutellum with scattered setae; anepimeron with several setae and scales; other pleura bare; wing ( Fig. 14c ) length (from arculus to apex): 1.70-2.25 mm (n=3); all legs broken. Abdomen ( Fig. 14d ): 1 st –7 th tergites sclerotized, rectangular with posterior row of setae, few lateral setae, scales scattered, no basal pair of trichoid sensilla; 8 th tergite with an indentation at distal margin in midlenght, bare; 2 nd –7 th sternites rectangular with posterior row of setae, numerous setae at midlength, lateral setae present, scales scattered, a basal pair of trichoid sensilla, 8 th sternite with a reentrance at basal margin, near midlength, with scattered setae and scales, and a basal pair of trichoid sensilla. Terminalia ( Fig. 14e ): gonocoxite hemispherical, setose, 2.6–3.0 times the length of gonostylus (n=2); gonostylus rectangular with scattered setae, cerci separate, riniform, setose; hypoproct bilobed, setose; aedeagus conical, gonocoxal lobes very short.

Pupa redescription ( Fig. 15a ). 3,0- 4.3 mm long (n=7). Integument brownish. Head: a pair of antennal papillae present, antennal horn triangular, short, with outer and inner margins smooth; apical seta 0.07-0.08mm long (n=5); upper facial horns conical, short; lower facial horns absent; two pairs of lower facial papillae: one pair with seta, the other bare; a triplet of papillae (two with setae and one bare) near base of each palpus; upper cephalic margin thickened laterally, face without lateral projection, head integument wrinkled just below antennal bases and around upper facial horns and below them. Thorax: prothoracic spiracle not projected ( Fig. 15b ), prothorax with three pairs of dorsal papillae and two pairs of lateral papillae, no lateral projection just below prothoracic spiracles. Abdomen: spiracles not elongated, 2 nd –8 th segments with dorsal spines near anterior margin, arranged only centrally ( Fig. 15c ), spines in the 2 nd segment rudimentary, shorter than those of 3 rd- 8 th segments, integument ventrally sculptured. Last segment with two rounded terminal projections in both sexes, far apart in female pupa and closely appressed in male pupa ( Figs. 15d, e ).

Larva description. 3.20 mm long (n=1), body elongate, cylindrical, tapered towards posterior end ( Fig. 16a ); integument rough ( Fig. 16b ). Prothoracic sternal spatula absent, sternal papillae setose; three setose lateral papillae on each side, four dorsal papillae setose from 1 st to 7 th abdominal segments. Terminal segment ( Fig.16c ) with 1/16 of the total length of larva, elongate and strongly tapered towards apex, with four setose papillae; anus cleft; integument rough dorsally, ventrally with rounded sculptures near anus and striated distally.

Gall ( Fig. 16d ). On bud, globose, green or reddish, with trichomes, one-chambered.

Material Examined. Brazil, Rio de Janeiro, Maricá, APA de Maricá, 18.v.2020,Maia &Gomes col., 2 males, 3 male pupal exuviae, 1 female pupal exuvia (emergence on 21.V.2020). Same locality and collectors, 27.iv.2021, 1 male pupal exuvia; 25.v.2021, 1 male (emergence on 31.V.2020), 2 female pupal exuviae and 1 larva; 31.v.2021, 1 male pupal exuvia; 07.vi.2021, 1male + pupal exuviae; 31.vii.2021, 1 female pupal exuviae and 1 male pupa.

Figures

Figure 14 Bruggmannia monteiroi Maia & Couri, 1993, male: a) Head, frontal view, b) 5th flagellomere, c) Wing, d) 5th – 8th abdominal segments, lateral view, e) Terminalia, dorsolateral view.

Figure 15 Bruggmannia monteiroi Maia & Couri, 1993, pupa: a) General aspect, ventral view, b) Prothoracic spiracle, dorsal view, c) 6th – 9th abdominal segments, dorsal view, d-e) Terminal segment, sexual dimorfism, ventral view: d) Male pupa, e) Female pupa.

Figure 16 Bruggmannia monteiroi Maia & Couri, 1993:a-c) Larva,a) General aspect, b) Last abdominal segments, integument, dorsal view, c) Terminal segment, ventral view, d) Gall, general aspect.