Coronabrotica amazonensis Moura

Moura, Luciano De A., 2010, Coronabrotica, a new genus and species of Luperini, and a key to genera of Section Phyllecthrites (Coleoptera, Chrysomelidae, Galerucinae), Zootaxa 2675, pp. 26-32 : 30-31

Coronabrotica amazonensis Moura , sp. nov.

Etymology. The specific name, amazonensis , is an adjective based on the geographic region where the specimens were collected.

Type material. Holotype male, BRAZIL, State of Pará: Tucuruí, 5.VII.1978, W. França col. ( MPEG); paratype male, BRAZIL, State of Pará: Tucuruí (Saúde, Rio Tocantins) (hanging trap 1.6 m), 11-13.VI.1984 ( MPEG); paratype female, BRAZIL, State of Pará: Tucuruí, Bagagem (Rio Tocantins), 24.VI.1984, W. Overal col. ( MPEG); paratype male, BRAZIL, State of Amazonas: Road AM1 (= AM010), km 104, VI.1968, several col. ( MCNZ).

Measurements. Males: body length 7.2-8.3 mm; elytral length 5.2-6.0 mm; humeral width 2.7-3.2 mm. Female: body length 7.2 mm; elytral length 5.2 mm; humeral width 2.7 mm.

General coloration yellowish, except: (1) antennomeres VIII to XI (in two specimens, IX to XI); (2) apical extremity of mandibles; (3) four elytral spots distributed in the following areas ( Fig. 1 ): two basal spots separated by narrow sutural band, each spot extending up to humeral region, with posterior margins almost straight, and other two spots sub circular and located in apical half, with edges touching the lateral margins and suture of elytra, without reaching the extremity; (4) metasternum; (5) metepisternum; and (6) abdomen, which range from dark brown to black.

Head with surface of vertex micro-reticulated, with marked punctation. Frons shiny, slightly reticulated with sparsely distributed setae. Eye with widest diameter about 2.8 times length of gena, which is reduced. Labrum with rounded sides, apical edge with small central notch and, along mid-line, transversal line of six long setae ventrally directed. Palpomere I of maxillary palp smallest, transverse; palpomere II transverse, double length of I; III subcylindrical, biggest of palpomere, roughly three times length of IV, which is acuminated; long and sparse setae distributed on four palpomeres, except on apical one where they are short. Labial palps with segment II longest, subtransverse, about three times longer than I; palpomere III conical, with short bristles in basal region; setae of palpomere II long and sparse. Antennae with antennomeres I to V shiny, covered by short yellowish setae, sparsely distributed; from VI on, short pubescence becomes denser, mixed with longer setae ( Fig. 4 ).

Pronotum approximately 1.4 times wider than long, surface glabrous, shiny, and smooth; anterior and posterior margins with short setae evenly distributed along entire extension; each angle with long seta, posterior angle surrounded by two short setae. Prosternum shiny, glabrous, except anterior and posterior edges and middle of anterior portion. Mesosternum shiny, with short and sparsely distributed setae. Metasternum smooth, shiny, covered with uniform pubescence.

Elytra with glabrous surface, punctation shallow and with setae sparsely distributed, restricted to apical half. Short bristles equally distributed along edge of post-humeral region and apically. Scutellum smooth, shiny and glabrous.

Legs with smooth and shiny integument; pubescence short, sparse on femur and denser on tibiae and tarsi.

Abdomen with ventral integument glossy covered by uniformly distributed pubescence.

Aedeagus ( Figs. 7, 8 ) with median lobe roughly 3.5 times length of tegmen. Sclerites of internal sac at level of apical half of median lobe: one elongated, with acute apex and another laminar, with acute tooth close to one extremity and one serrated edge ( Fig. 9 ). Length of each elongate stems of spiculum gastrale slightly greater than half of total length of middle lobe.

Geographic distribution. Known from Amazonian Region, northern Brazil, Pará and Amazonas. According to the provinces of the Amazonian subregion ( Morrone 2000), the locality of Tucuruí (state of Pará) is included in the Tapajós Province, and the AM1 (= AM010), a road of the state of Amazonas that connects the counties of Manaus and Itacoatiara, is located in the Várzea Province.

Figures

FIGURES 1 – 3. Coronabrotica amazonensis Moura sp. nov. 1, Habitus, male. Length = 8.3 mm. 2, head and pronotum, dorso-lateral view (white arrow, position of the pore on pronotum). 3, detail of pore with crown of setae on pronotum.

FIGURES 4 — 9. Coronabrotica amazonensis Moura sp. nov. 4, Antennae; middle legs: 5, male, 6, female; aedeagus: 7, ventral view; 8, lateral view; 9, sclerite of internal sac. Bars = 1 mm.