Potemnemus Thomson
Creators: name: Wallin, Henrik
name: Kvamme, Torstein
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Potemnemus

description: Key to species of the genus Potemnemus Thomson
1. Anterior part of each elytron with a strongly raised, bulb-like, and intensely granulated area.......................... 2
- Anterior part of elytra flattened and surface with scattered short spines or granules.................................. 5
2. Elytra with posterior part of lateral carina distinctly curved towards the suture..................................... 3
- Elytra with posterior part of lateral carina straight............................................................ 4
3. Body short and robust, about 3.0 times longer than wide, elytra brownish with entire surface convex (Figs. 42, 43).......................................................................................... P. tuberifer Gahan, 1894
- Body slender, about 3.5 times longer than wide, elytra light brown with 2/3 of anterior surface flattened (Fig. 21)................................................................................. P. thomsoni Lansberge, 1880 sp. res.
4. Lateral pronotal spines weakly pointing upwards (Fig. 47), antennae longer than body by about five to six antennomeres in males and by about four antennomeres in females (Figs. 34, 35), antennomeres 6–11 in males are relatively long with last antennomere less than 1.5 times the length of the penultimate. Aedeagus is evenly curved at base, and almost straight towards apex (Figs. 67), parameres at base of inner margin with a distinct extension projecting forward forming a small “tooth and surface below base of parameres uniform (Fig. 69). Spermathecal capsule is relatively short with a shaft and a rounded head (Fig. 79). The shaft and head is 2.8 mm long................................. P. wheatcrofti (Breuning, 1971) nov. comb.
- Lateral pronotal spines strongly pointing upwards (Figs. 48–50), antennae longer than body by about six antennomeres in males and by about 4 to 4.5 antennomeres in females (Figs. 37–40), antennomeres 6–11 in males are very long with last antennomere two times the length of the penultimate. Aedeagus is acutely curved towards apex (Fig. 71), parameres at base of inner margin with a broadly rounded extension weakly projecting forward and surface below base of parameres completely separated (Fig. 73). Spermathecal capsule is long and with a curved shaft and a rounded head (Fig. 80). The shaft and head is 4.0 mm long............................................................................. P. nylanderi nov. sp.
5. Pronotum whitish and densely covered with very fine black spots............................................... 6
- Pronotum reddish brown or suppplied with larger spots of different colours........................................ 7
6. Elytra whitish without any small black spots, lateral carina spinous (Figs. 22, 23)................. P. pristis Pascoe, 1866
- Elytral surface mottled: brownish, yellowish and whitish, and entirely covered with very fine black spots, lateral carina weakly granulated (Figs.32, 33)........................................................... P. kazsabi (Breuning, 1973)
7. Elytra with a large reddish brown or brown patch surrounding scutellum.......................................... 8
- Elytra without large patch surrounding scutelum............................................................ 9 8. Pronotum medially with three (rarely two) broad and strongly elevated tubercles of similar height (Fig. 45), and with a very weak longitudinal yellowish line, elytra is ash-grey with a large dark brown patch surrounding scutellum is rounded or squareformed and only slightly elongated along the suture (Figs. 1, 2), aedeagus with dorsal surface wrinkled (Fig. 52), parameres straight towards apex (Fig. 53)...................................................... P. scabrosus (Olivier, 1790)
description: Published as part of Wallin, Henrik & Kvamme, Torstein, 2015, A review of the genus Potemnemus Thomson, 1864 (Coleoptera: Cerambycidae) with description of a new species from Papua New Guinea, pp. 501-542 in Zootaxa 4040 (5) on page 527, DOI: 10.11646/zootaxa.4040.5.1, http://zenodo.org/record/239016