Piesocorynini, Valentine, 1960

Trýzna, Miloš, Carrasco, Juan Carlos & Blažej, Lukáš, 2022, Review of the Neotropical genera Barra Jordan and Brevibarra Jordan, with description of a new species of Barra from Nicaragua, notes on the tribe Piesocorynini Valentine, and new records of Brevibarra from Brazil and Ecuador (Coleoptera: Anthribidae), Zootaxa 5213 (3), pp. 243-268 : 245

Neotropical genera of the tribe Piesocorynini can be identified using the keys below

(see also Jordan 1906: 301, Valentine 1998: 271)

1 Outer edge of mandibles straight along entire length, only at the very apex do they turn sharply inwards......... Group 1

- Outer edge of mandibles more or less bent along their entire length, or along a substantial part................. Group 2

Group 1: Barridia (not depicted), Brachycorynus ( Fig. 2 ), Opisolia ( Fig. 7 ), Piezobarra ( Fig. 12 ), Phaenotheriopsis ( Fig. 17 )

Group 2: Barra ( Figs 40 , 52 , 57 ), Brevibarra ( Fig. 69 ), Lagopezus ( Fig. 22 ), Piesocorynus ( Fig. 27 ), Piezonemus ( Fig. 33 )

Key for genera of Group 2

1 Pygidium of male distinctly longer than wide, convex ( Fig. 34 ), as long as wide in female; pygidium of female with promontory before apical edge, this projection divided basally. Mesotibia of male with distinct spur at apex ( Fig. 37 ). Tarsomere I of mesotarsus dilated at apex on inner side ( Fig. 37 ). Eyes very large, occupying a considerable part of head, elongate, oblique, distance between eyes as long as half of length of eye ( Fig. 33 ). Rostrum very short, ratio of rostrum length to maximum width 0.3–0.4 ( Fig. 33 )............................................................................ Piezonemus

- Pygidium wider than long in both sexes, flat, without any promontory in female. Mesotibia of male without distinct spur at apex (except Piesocorynus lateralis ). Tarsomere I of mesotarsus not dilated at apex. Eyes smaller, rather oval, not distinctly oblique, distance between eyes distinctly longer than half of length of eye. Rostrum longer, ratio of rostrum length to maximum width greater than or equal to 0.5............................................................................. 2

2 Tibia and tarsi of all legs with distinct long and erect setae ( Figs 21, 25 )................................. Lagopezus

- Tibia and tarsi of all legs without distinct long and erect setae.................................................. 3

3 Antennae shorter, reaching no further than posterior margin of pronotum in both sexes. Antennomere III short, approximately the same length as II, or maximally 1.2 times as long as antennomere II ( Fig. 70 ). Antennal scrobes nearly extending to eyes. Elytral base unequivocally straight in strictly dorsal view, shoulders more rectangular ( Figs 62 , 68 ). Eyes rounded, not emarginate or truncate anteriad ( Fig. 72 )................................................................. Brevibarra

- Antennae longer, reaching posterior margin of pronotum in both sexes. Antennomere III longer, the same length or longer than I and II together. Antennal scrobes rather distant from eyes. Elytral base at least slightly bisinuate on strictly dorsal view, shoulders rounded. Eyes oval, weakly emarginate or truncate anteriad............................................... 4

4 Sides of pronotum convex ( Fig. 29 ). Dorsal transverse carina of pronotum either completely basal ( Fig. 29 ) or antebasal, in this case approaching base of pronotum at lateral angles (= distinctly curved anteriad) (the same as in Lagopezus , see Fig. 24 )............................................................................................ Piesocorynus

- Sides of pronotum straight and conical, not convex laterally ( Figs 42 , 54 , 59 ). Dorsal transverse carina of pronotum sub-basal to basal ( Fig. 42 ) or antebasal, in this case parallel with posterior margin of pronotum ( Figs 54 , 59 )................ Barra

Figures

FIGURES 1–5. Brachycorynus rectus (LeConte, 1876), female (MTDC); 1, dorsal habitus; 2, head in dorsal view; 3, left antenna in dorsal view; 4, pronotum in dorsal view; 5, lateral habitus. Scale bars in mm.

FIGURES 6–10. Opisolia lenis Jordan, 1931, female (MTDC); 6, dorsal habitus; 7, head in dorsal view; 8, pronotum in dorsal view; 9, right antenna in dorsal view; 10, lateral habitus. Scale bars in mm.

FIGURES 11–15. Piezobarra sparsilis Jordan, 1906, female (MTDC); 11, dorsal habitus; 12, head in dorsal view; 13, right antenna in dorsal view; 14, pronotum in dorsal view; 15, lateral habitus. Scale bars in mm.

FIGURES 16–20. Phaenotheriopsis vauriei Valentine, 1955, male (MTDC); 16, dorsal habitus; 17, head in dorsal view; 18, right antenna in dorsal view; 19, pronotum in dorsal view; 20, lateral habitus. Scale bars in mm.

FIGURES 39–43. Barra baruskae sp. nov., holotype male; 39, dorsal habitus; 40, head in dorsal view; 41, left antenna in dorsal view; 42, pronotum in dorsal view; 43, lateral habitus. Scale bars in mm.

FIGURES 51–55. Barra salamandrina Frieser, 1983, paratype male (MTDC); 51, dorsal habitus; 52, head in dorsal view; 53, left antenna in dorsal view; 54, pronotum in dorsal view; 55, lateral habitus. Scale bars in mm.

FIGURES 56–60. Barra gounellei Jordan, 1904, holotype male; 56, dorsal habitus; 57, head in dorsal view; 58, apical fourth antennomeres of left antenna in dorsal view; 59, pronotum in dorsal view; 60, lateral habitus. Scale bars in mm.

FIGURES 68–72. Brevibarra scotosagis Jordan, 1906; holotype female; 68, dorsal habitus; 69, head in dorsal view; 70, left antenna in dorsal view; 71, pronotum in dorsal view; 72, lateral habitus. Scale bars in mm.

FIGURES 21–25. Lagopezus tenuicornis (Fabricius, 1801), male (MTDC); 21, dorsal habitus; 22, head in dorsal view; 23, left antenna in dorsal view; 24, pronotum in dorsal view; 25, lateral habitus. Scale bars in mm.

FIGURES 26–31. Piesocorynus dispar (Gyllenhal, 1833), male (MTDC); 26, dorsal habitus; 27, head in dorsal view; 28, pygidium; 29, pronotum in dorsal view; 30, left antenna in dorsal view; 31, lateral habitus. Scale bars in mm.

FIGURES 32–38. Piezonemus durus Jordan, 1904, male (MTDC); 32, dorsal habitus; 33, head in dorsal view; 34, pygidium; 35, pronotum in dorsal view; 36, left antenna in dorsal view; 37, right mesotibia and mesotarsus; 38, lateral habitus. Scale bars in mm.

FIGURES 61–62. 61, Barra gounellei Jordan, 1904, female (BMNH), dorsal habitus; 62, Brevibarra scotosagis Jordan, 1906, male from Ecuador, Loreto env., corresponding specimen with dissected terminalia, dorsal habitus (MTDC). Scale bars in mm.