Lanurgus, Eggers, 1920

Jordal, Bjarte H., 2021, The mainly South African genus Lanurgus revised (Coleoptera, Scolytinae), Zootaxa 5027 (1), pp. 87-106 : 90-91

Key to the species of Lanurgus

1 Elytral interstriae broad, with densely set confused setae; large and stout species,> 2.5 mm long, <2.2 × as long as broad... 2

- Most interstriae on elytral disc with regular or nearly regular single rows of setae; body smaller and more elongate, <2.4 mm long,> 2.3 × as long as broad............................................................................ 4

2 Very stout species, 1.9–2.0 × as long as broad; female scapus with a long dorsal spike; pronotum very broadly rounded in front.......................................................................................... L. oleae

- Less stout, about 2.0–2.2 × as long as broad; female scapus triangular; pronotum somewhat trapezoid.................. 3

3 Interstriae 6–9 similar to 1–5, with broad bands of confused setae; basal segment of antennal club corneous, clearly demarcated from segment 2 by a suture of short, thick setae.................................................... L. podocarpi

- Interstriae 6–9 with nearly uniseriate rows of setae; basal segment of club lightly setose, suture less distinct.. L. xylographus

4 Interstrial setae very long and bristle-like, towards lateral margins and on pronotum exceedingly long and hair-like, appearing woolly; epistoma with a pair of blunt spines; basal segment on antennal club corneous, sutures transverse...... L. longipilis

- Interstrial setae mainly spatulate or bristle-like; epistoma smooth; sutures on antennal club usually procurved, almost transverse in two species........................................................................................ 5

5 Interstrial setae broadly spatulate, on declivity with mixed short and very long spatulate setae; male declivity with three pairs of sharp spines............................................................................. L. spathulatus

- Interstrial setae either of similar length throughout and truncated, or if they vary in length, mainly bristle-like; declivity without spines, usually rounded................................................................................ 6

6 Male declivity with a pair of thick nodules, female declivity with only an obscure pair of bumps; both sexes with interstriae 2 glabrous on declivity........................................................................ L. subsulcatus

- Male and female declivity rounded, without nodules, females of all species and males in all except one species with setae present on declivital interstriae 2......................................................................... 7

7 Interstriae 8 carinate.................................................................... L. carinatus sp. nov.

- Interstriae 8 not carinate, smooth......................................................................... 8

8 Smaller species, <1.4 mm long.......................................................................... 9

- Larger species,> 1.6 mm long.......................................................................... 10

9 Interstrial setae narrowly spatulate or bristle-like, 3–4 × as long as wide; pronotal setae hair- or bristle-like...... L. capensis

- Interstrial setae broad and truncated, 1–2 × as long as wide; some pronotal setae broadly spatulate........ L. xanthophloeae

10 Interstrial setae on declivity and near lateral margins longer and more bristle-like, particularly in the females, shaggy appearance......................................................................................... 11

- Interstrial setae in females similar on disc and declivity (and males of all except one species)........................ 12

11 Declivital setae about 2 × longer than setae on disc.................................................. L. pubescens

- Declivital setae about 3–5 × longer than setae on disc................................................. L. barbatus

12 Strial setae mainly in regular rows....................................................................... 13

- Strial setae broadly confused, intergrading in size, and mixed with interstrial setae................................. 14

13 Elytral apex very broadly rounded, almost transverse; strial setae thin, hair-like; interstrial setae uniform in length and shape, truncated; setae on scutellum unifid.................................................................. L. rhusi

- Elytral apex not distinctly transverse; strial setae one-third to half as thick as interstrial setae; setae on interstriae 1 and 4 of mixed size, setae on disc generally less spatulate compared to declivity; setae on scutellum bifid... L. tsitsikammae , sp. nov.

14 Female frons flat, impunctate and shiny on lower central half; interstrial setae separated by more than their length, in males the setae are longer on declivity than on disc; setae on scutellum bifid............................... L. mattheei , sp. nov.

- Female frons concave, lightly or densely setose; interstrial setae in both sexes of equal length on disc and declivity, separated by less than their length; setae on scutellum unifid.......................................................... 15

15 Female scapus triangularly extended dorsally, impressed area of frons with sparse short setae, on its dorsal margin with tuft of projecting setae about half the length of setae on scapus......................................... L. beaveri , sp. nov.

- Female scapus with dorsal spike, impressed area of frons with dense setae, on the dorsal margin of impression with long tuft of setae as long as setae on scapus............................................................ L. jubatus , sp. nov.