Polyzonus Castelnau 1840

Xie, Guang-Lin & Wang, Wen-Kai, 2009, A new species of Polyzonus Castelnau (Coleoptera: Cerambycidae) from China, Zootaxa 2017, pp. 58-60 : 58

Genus Polyzonus Castelnau 1840

Polyzonus Castelnau, 1840: 438 ; Gressitt, 1951: 209; Gressitt & Rondon, 1970: 155; Pu, 1980: 38; Pandy, 1980: 226; Chiang, Pu & Hua, 1985: 62; Hua 2002: 225.

Eyes finely faceted, inner edges strongly umbilicate. Frons raised between antennal tubercles. Antennal tubercles obtusely protrudent. Mandibles rather long. Antennae slightly longer than body in male and shorter than body or equal in length in female, several segments relatively thick apically, third segment longer than fourth. Pronotum usually slightly longer than its width, with a distinct tubercle at the middle of each side; anterior margin and posterior margin without transverse sulci. Scutellum triangular. Elytra long, narrowed gradually and very slightly posteriorly, rounded at the apices. Procoxal cavities rounded, closed, mesocoxal cavities opened to mesepimeron. Metasternum with scent pores at posterior angles. Hind femora slightly long, without surpassing apex of elytra. First tarsal segment of hind tarsus longer than the following two segments together.

The genus Polyzonus closely resembles Chelidoniun Thomson, 1864 but differs in having a pronotum that is usually slightly longer than wide, anterior margin and posterior margin without transverse sulci, elytra rather long, with subparallel sides and rounded apical margins, body length almost 5 times longer than width, hind femora without surpassing apices of elytra in female.

Distribution: East Asia; Southeast Asia; Indo-China; Siberia.