Hemicladus thomsonii Buquet, 1857

Santos-Silva, Antonio, Nascimento, Francisco E. De L. & Biffi, Gabriel, 2019, A new species of Tropidion (Neoibidionini), synonymies in Rhinotragini, notes on Pirangoclytus (Clytini) andHemicladus (Calliini), andnew recordsin Cerambycidae (Coleoptera), Zootaxa 4614 (3), pp. 449-460 : 457-458

Hemicladus thomsonii Buquet, 1857

( Figs 35–42 )

Hemicladus thomsonii Buquet, 1857: 330 .

According to Buquet (1857), the elytra in H. thomsonii are slightly pubescent, reddish-brown or brick red, and the underside of the body is covered with grayish pubescence. Tavakilian et al. (2010) reported: “integument of the elytra reddish, with very sparse pubescence. The specimens of H. thomsonii deposited at MZSP have the elytra reddish-brown or more yellowish-brown, but the concentration of the pubescence is variable: it may be very sparse, as in the lectotype (see Bezark 2018), or distinctly denser. The color of the elytral pubescence is mostly reddish-brown or yellowish- brown, but it is slightly violaceous in one specimen. In this latter specimen ( Figs 35–38 ), the elytra are also irregularly tinted with violaceous. In some specimens from the MZSP collection, the base of the elytra has the pubescence lighter than on remaining surface.

Although Buquet (1857) and Tavakilian et al. (2010) did not mention the color of the elytral pubescence, it appears to be somewhat yellowish-brown in the lectotype. We examined a specimen ( Figs 39–42 ) from Brazil (Mato Grosso do Sul) with the elytra mostly dark with moderately dense violaceous pubescence, except the basal area with yellowish-white pubescence. Furthermore, the ventral pubescence is also mostly violaceous, and not grayish ( Buquet 1857) or yellowish-brown as in nearly all specimens examined. Accordingly, the elytral color, as well the concentration and color of the elytral pubescence and the color of the ventral pubescence is noticeably variable in H. thomsonii .

Despite these variations found in the specimen from Mato Grosso do Sul, the key from Tavakilian et al. (2010) also leads to H. thomsonii , and it was not possible to find a reliable difference separating this specimen from the other specimens of the examined species.

Material examined. BRAZIL, Goiás, no other data except Gounelle det., 2 males ( MZSP) ; Jata ( Fazenda Aceiro ), 1 male, X.1962, Expedição Departamento de Zoologia col. ( MZSP) . Mato Grosso: Chapada (near Cuiaba ; no other data), 4 males (one of these, Figs 35–38 ), 7 females ( MZSP) ; Utiariti ( Rio Papagaio ), 1 male, XI.1966, Lenko & Pereira col. ( MZSP) . Mato Grosso do Sul (new state record): Selvíria ( UNESP farm; cerradão fragment in advanced stage of regeneration; 20°23′22.5″S / 51°24′18.0″W), 1 female, 11.XI.2017, G. Paiola col. ( UNESP) ( Figs 39–42 ) ; Três Lagoas ( Fazenda Retiro de Telhas ), 1 female, X.1964, Expedição Departamento de Zoologia col. ( MZSP) . Minas Gerais: Cabo Verde , 1 male, 1920, J. A. Diaz col. ( MZSP) ; Mar de Espanha , 1 male, 15.XI.1909, J.F. Zikán col. ( MZSP) ; Serra do Cip (Km 110), 1 male, 29.X.1974, C. Froelich col. ( MZSP) . Rio de Janeiro (new state record), no other data except Gounelle det., 1 female ( MZSP) . São Paulo (new state record), no other data except Gounelle det., 1 female ( MZSP) .

Figures

FIGURES 35–42. Variations of Hemicladus thomsonii Buquet, 1857. 35–38, male from Brazil (Mato Grosso): 35, Dorsal habitus; 36, Ventral habitus; 37, Lateral habitus; 38, Head, frontal view. 39–42, Female from Brazil (Mato Grosso do Sul): 39, Dorsal habitus; 40, Ventral habitus; 41, Lateral habitus; 42, Head, frontal view. Scale bars: 35–37, 39–41: 2 mm; 38, 42: 1 mm.