Potemnemus Thomson

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, Zootaxa 4040 (5), pp. 501-542 : 527

publication ID	https://doi.org/ 10.11646/zootaxa.4040.5.1
publication LSID	lsid:zoobank.org:pub:479A5389-3C8C-4865-944C-6C3DBAA823CE
DOI	https://doi.org/10.5281/zenodo.6118483
persistent identifier	https://treatment.plazi.org/id/03BF87A4-FFDE-FF8B-FF09-FB6FFA09E55F
treatment provided by	Plazi
scientific name	Potemnemus Thomson
status

Treatment

Key to species of the genus Potemnemus Thomson View in CoL

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 View FIGURES 41 – 44 ).......................................................................................... 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 View FIGURES 19 – 24 )................................................................................. P. thomsoni Lansberge, 1880 sp. res.

4. Lateral pronotal spines weakly pointing upwards ( Fig. 47 View FIGURES 45 – 50 ), antennae longer than body by about five to six antennomeres in males and by about four antennomeres in females ( Figs. 34, 35 View FIGURES 31 – 36 ), 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 View FIGURES 67 – 74 ), 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 View FIGURES 67 – 74 ). Spermathecal capsule is relatively short with a shaft and a rounded head ( Fig. 79 View FIGURES 79 – 80 ). The shaft and head is 2.8 mm long................................. P. wheatcrofti ( Breuning, 1971) nov. comb.

- Lateral pronotal spines strongly pointing upwards ( Figs. 48–50 View FIGURES 45 – 50 ), antennae longer than body by about six antennomeres in males and by about 4 to 4.5 antennomeres in females ( Figs. 37–40 View FIGURES 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 View FIGURES 67 – 74 ), parameres at base of inner margin with a broadly rounded extension weakly projecting forward and surface below base of parameres completely separated ( Fig. 73 View FIGURES 67 – 74 ). Spermathecal capsule is long and with a curved shaft and a rounded head ( Fig. 80 View FIGURES 79 – 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 View FIGURES 19 – 24 )................. 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 View FIGURES 31 – 36 )........................................................... 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 View FIGURES 45 – 50 ), 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 View FIGURES 1 – 6 ), aedeagus with dorsal surface wrinkled ( Fig. 52 View FIGURES 51 – 58 ), parameres straight towards apex ( Fig. 53 View FIGURES 51 – 58 )...................................................... P. scabrosus ( Olivier, 1790)