Trypanidius proximus Melzer, 1931

Carelli, Allan, Monné, Marcela L. & Machado, Vanessa Souza, 2013, Taxonomic revision of Trypanidius Blanchard, 1846 in South America (Insecta: Coleoptera: Cerambycidae), Zootaxa 3691 (2), pp. 253-272 : 263

Trypanidius proximus Melzer, 1931

( Figs. 1, 2 , 15, 25, 36)

Trypanidius proximus Melzer, 1931: 9 , fig. 6; Monné, 2005: 146. Trypanidius dimidiatus ; Bosq, 1934: 340 (not Thomson, 1860).

Male. Dark brown to black integument. Body covered with yellowish-grey to grey pubescence, except area from frons to vertex, apex of tubercles, on posterior margin of pronotum, on central longitudinal band of scutellum, spots on apical half and apical band on femora and on lateral surface of protorax to abdomen covered with yellowish pubescence; whitish pubescence on genae, in band on base of antennomeres 3–11, in short longitudinal band on median region of base of elytra, also present as spots with variable size on middle of elytra (sometimes forming a transverse band), transverse band on beginning of apical fourth of elytra, on basal half of femora, in band on median region of tibiae and on tarsi; dark brown pubescence on three spots on pronotum (two on anterior half and other central on posterior half), laterally on scutellum, on spots between crest and elytral suture, also present in one or two central spots at beginning of apical third and on tufts of pubescence distributed on elytra. Body also covered with coarse, short and whitish setae, contrasting with remainder of pubescence.

Frons flat, lower eye lobes 1.4 times larger than genae, and two erect setae on inner margin. Antennae with scape 1.4 times longer than antennomere 3.

Prothorax 1.7 times wider than long; pronotal disc with two elevated ridges converging anteriorly with a postmedian elevation between them. Scutellum with truncate apex. Prosternal process three times narrower than procoxal cavity; mesosternal process swollen, 1.5 times narrower than mesocoxal cavity.

Elytra 3.5 times longer than prothorax; centro-basal crest near suture and longitudinal carina feebly produced; apex truncate.

Measurements (mm). (Male/Female). Total length: 13.8/14.5; prothorax length: 2.6/2.7; prothorax width: 4.5/ 4.7; elytral length: 10.1/10.5; humeral width: 5.8/6.2.

Type locality. Brazil, Goiás: Jataí. (MZSP).

Geographical distribution. Brazil (Mato Grosso, Goiás, São Paulo, Paraná), Paraguay, Argentina, Uruguay.

Hosts. Euphorbiaceae— Sapium haematospermum Müll. Arg. ; Leguminosae— Enterolobium contortisiliquum (Vell.) Morong ; Moraceae— Ficus luschnathiana (Miq.) Miq. ; Salicaceae— Salix sp. (Monné, 2001).

Comments. Trypanidius proximus differs from the other described species by the features mentioned in the key, as well as by the yellowish-grey to grey elytral pubescence with two whitish bands, one longitudinal short on the median region of the base and the other transverse in the beginning of the basal fourth, whitish spots with variable size in the middle (sometimes forming a transverse band), dark brown spots between the crest and the elytral suture, in the beginning of the apical third and in tufts of pubescence.

Specimen examined. BRAZIL, Mato Grosso: Barra do Bugres, male, XI.1983, B. Silva, J. Becker and O. Roppa leg.; Chapada dos Guimarães, 3 males, 1 female; Rio Verde, 400m, female, XI.1964; São Paulo: Andradina, female, 9.X.1950, H. Zellibor leg.; PARAGUAY, Caaguazú: male, 12.III.1965, C.S. Carbonell, A. Mesa and M.A. Monné leg.; Guairá: Villarrica, male, X.1937, A. Maller leg.; male, female, 1940, A. Maller leg.; San Estanislau: 2 males, 1 female, I.1946, H. Zellibor leg.; ARGENTINA, Buenos Aires: Palermo, male, 26.I.1912; Rivadavia, male, 20.I.1916, J.M. Bosq. leg.; Jujuy: female, II.1948, H. Zellibor leg.; Salta: El Naranjo, male, I.1944; Metán, male, IV.1945; Tucumán: 1000m, female, I.1950, Wygodzinsky leg.; URUGUAI, Paysandú: Puerto Pepe Ají, female, 25.I.1948, C.S. carbonell leg.; Rocha: Arroyo San Miguel, Laguna Média, male, 17.XI.1962, P.R. San Martín leg.; Barra, 1 male, 2 females, 17.II.1962, P.R. San Martín leg. All in the MNRJ collection.

Figures

FIGURES 1 – 4. 1 – 2, Trypanidius proximus; 1, detail of long setae in the internal margin of the genae; 2, detail of two lateral elevations on prothorax; 3 – 4, T. dimidiatus; central-basal crest curved on elytra: 3, dorsal view; 4, lateral view.