Hemilophini, Thomson, 1868

Heffern, Daniel & Santos-Silva, Antonio, 2022, Notes on Purusia Lane, Juninia Lane, and Sibapipunga Martins & Galileo (Coleoptera, Cerambycidae, Lamiinae), and description of a new species of Juninia, Zootaxa 5141 (2), pp. 151-162 : 161

Provisional key to species of Hemilophini with 12-segmented antennae

(adapted from Martins and Galileo 2014 and Santos-Silva et al. 2020)

Note: there is not a reliable feature which allows separation of females in some of these genera.

1. Elytral apex rounded or obliquely truncate without projections at outer angle...................................... 2

- Elytral apex perpendicularly truncate in relation to body axis with short spine at outer angle, or obliquely truncate with long or somewhat long spine at outer angle....................................................................... 4

2(1). Humeral carina absent................................................... Murupeaca Martins and Galileo, 1992

- Humeral carina present................................................................................. 3

3(2). Frons in male with projections.......................................................... Phoebella Lane, 1966

- Frons in male without projections....................................................... Gagarinia Lane, 1956

4(1). Inner tooth of claws shorter than outer one; antennae in male short, just surpassing elytral apex...... Tabatinga Lane, 1966

- Inner tooth of claws about as long as outer one; antennae in male distinctly surpassing elytral apex..................... 5

5(4). Scape with distinct apical cicatrix.................................. Purusiella Dalens, Touroult & Tavakilian, 2010

- Scape without apical cicatrix or at most with slightly distinct cicatrix............................................ 6

6(5). Frons in male uniformly convex ( Fig. 14 ); outer elytral angle with somewhat short spine in both sexes ( Figs 13, 17 )............................................................................................ Juninia Lane, 1966

- Frons in male projected ( Figs 6 , 25 ); outer elytral apex with distinctly long spine ( Figs 1, 10 ) or nearly unarmed in female ( Fig. 21 ) and short spine in male ( Fig. 22 )...................................................................... 7

7(6). Frons in male with a single projection ( Figs 5, 6 ) bifid apically; elytral apex in both sexes with remarkably long spine on outer angle ( Figs 1, 10 )...................................................................... Purusia Lane, 1956

- Frons in male with two subconical projections ( Fig. 25 ); elytral apex nearly unarmed or with short spine ( Figs 21, 22 )........................................................................... Sibapipunga Martins & Galileo, 1993

Figures

FIGURES 13–17. Juninia annulifera (Kirsch, 1889). 13–16) Juninia leechi Lane, 1966, paratype male: 13) Dorsal habitus; 14) Ventral habitus; 15) Lateral habitus; 16) Elytral carinae. 17) Female, dorsal habitus.

FIGURES 1–12. 1–8) Purusia acreana Lane, 1956, holotype male: 1) Dorsal habitus; 2) Ventral habitus; 3) Lateral habitus; 4) Elytral carinae; 5) Head, frontal view; 6) Head, lateral view; 7) Scape, apical cicatrix; 8) Scape, detail. 9–11) Purusia acreana, female: 9) Head, lateral view; 10) Dorsal habitus; 11) Ventral habitus. 12) Purusiella wappesi (Martins & Galileo, 2004), scape. Figure 12 by Francisco Eriberto de Lima Nascimento (MZSP).

FIGURES 21–26. Sibapipunga beckeri (Martins & Galileo, 1992). 21) Holotype female, dorsal habitus. 22–25) Male: 22) Dorsal habitus; 23) Ventral habitus; 24) Lateral habitus; 25) Frontal tubercles. 26) Holotype female, elytral carinae (by Diego de Santana Souza).