OEMINI Lacordaire 1868

Santos-Silva, Antonio, Nascimento, Francisco Eriberto de L. & Botero, Juan Pablo, 2023, Taxonomy of Oemini (Coleoptera: Cerambycidae: Cerambycinae), with key to American genera, notes and new taxa, Journal of Natural History 57 (41 - 44), pp. 1917-1948 : 1919-1923

OEMINI Lacordaire 1868

Key to genera of American Oemini , adapted from Martins (1997)

1. Scape with distinct apical cicatrix .......................................................................................... 2

- Scape without apical cicatrix .................................................................................................... 4

2(1). Lower eye lobes longer than genae ................................................ A tenizus Bates, 1867

- Lower eye lobes shorter than genae .................................................................................... 3

3(2). Elytra short, exposing abdomen .................... Methioides Chemsak and Linsley 1967

- Elytra not exposing the abdomen .................. Mimoeme Chemsak and Linsley 1967

4(1). Lower eye lobes at most about as long as genae ( Figure 3 ) ....................................... 5

- Lower eye lobes distinctly longer than genae ( Figure 2 ) ............................................ 12

5(4). Elytra short, exposing abdomen .............................................................................................. 6

- Elytra not exposing the abdomen ( Figure 4 ) ..................................................................... 8 6(5). Procoxal cavities closed behind ................................ Necydalosaurus Tippmann, 1960

- Procoxal cavities open behind ................................................................................................ 7

7(6). Eyes not divided .............................................................. Kalore Martins and Galileo, 2006

- Eyes divided ...................................................................................... Methioeme Zajciw, 1963

8(5). Antennomere III or III and IV with isolated tuft of setae .............................................. 9

- Antennomeres without isolated tuft of setae .................................................................. 10

9(8). Only antennomere III with tuft of setae .............................. Euryprosopus White, 1853

- Antennomeres III and IV with tufts of setae C hromoeme Chemsak and Linsley 1967

10(8). Metafemora pedunculate-clavate ...................................... Paratemnopis Martins, 1978

- Metafemora gradually widened towards apex ............................................................... 11

11(10). Eltyra strongly longitudinally carinate ............................................. Eudistenia Fall 1907

- Elytra not or barely longitudinally carinate ........................ Xanthoeme Martins, 1980

12(4). Eyes divided .................................................................................................................................. 13

- Eyes not divided .......................................................................................................................... 14

13(12). Prothorax elongate, not strongly narrowed posteriorly; pronotal disc with asperities at least on posterior half ............................................... Argentinoeme Bruch, 1911

- Prothorax not elongate, strongly narrowed posteriorly; pronotal disc without asperities ............................................................................. Temnopis Audinet-Serville, 1834

14(12). Upper eye lobes wide, closer to each other than the width of an upper lobe (if elytral apex is not rounded, see also Stenoeme ) ............................................................ 15

- Upper eye lobes narrower, distance between them equal to or greater than the width of an upper lobe ............................................................................................................ 16

15(14). Pedicel as long as half of the length of the scape; protrochanters projected and pubescent in male ......................................................................... S phalloeme Melzer, 1928

- Pedicel shorter than half of the length of the scape; protrochanters not modified in male A ponoeme Martins, 1985 (only ............................... A. amazonica Martins, 1985 )

16(14). Prosternal process not laminiform, wider, subparallel-sided, narrowed towards apex, or mostly laminiform with apex widened ............................................................. 17

- Prosternal process laminiform or absent .......................................................................... 26

17(16). Antennomeres III- V with inner apical spine ....................... Tristachycera Bates, 1872

- Antennomeres without apical spine ................................................................................... 18

18(17). Maxillary palpi much longer than labial palpi, with palpomere II elongated; antennomere III shorter than twice length of scape; each elytron with two distinct longitudinal carinae ................................................ Malacopterus Audinet-Serville, 1833

- Maxillary palpi as long as or slightly longer than labial palpi; antennomere III at least twice length of scape; elytra without carinae or with slightly distinct carinae .............................................................................................................................................. 19

19(18). Mesoventral process triangular or mostly very narrow ............................................... 20

- Mesoventral process not triangular, subparallel-sided, not distinctly narrow or narrow with apex distinctly truncate .................................................................................. 21

20(19). Antennomeres III- IV of males asperate; elytra with apex acuminat .............................. ................................................................................................................... Neoeme Gounelle 1909

- Antennomeres not asperate in either sex; elytra with apex rounded........................... ................................................................................................................ Paranoplium Casey, 1924

21(19). Prothorax not strongly narrowed posteriorly; head with median groove absent (anterior and posterior sides of prothorax with similar appearance) .................... 22

- Prothorax strongly narrowed posteriorly; head with median groove distinct.... 23

22(21). Width of area between eye lobes about as wide as upper eye lobe ............................. ............................................................................................................. Limernaea Thomson, 1878

- Width of area between eye lobes distinctly narrower than upper eye lobe .............. ........................................................ Wappesoeme Galileo, Martins and Santos-Silva, 2015

23(21). Prothorax with long spine laterally in both sexes ( Figures 9, 10 ) .................................... ....................................................................................................................... Sepaicutea Lane 1972

- Prothorax without lateral spine, with spicule or with conical tubercle ................. 24

24(23). Prothorax in male with spicule laterally, and with conical tubercle in female ( Figures 16–23 ) ............................................... ............................................... Biraoeme gen. n.

- Prothorax without lateral projections ................................................................................. 25

25(24). Elytra shining, with asperous basal punctures; frons slightly concave .......................... ........................................................................................................ Amphelissoeme Martins 1981

- Elytra opaque, microsculptured throughout, basal punctures not asperous; frons flat....................................................................................................... Macroeme Aurivillius 1893

26(16). Sides of prothorax with spine, spicule or distinct conical tubercle ........................ 27

- Sides of prothorax without spine or spicule .................................................................... 30

27(26). Frons longer than wide, longitudinally tumid centrally; antennal tubercles close to each other; scape arched; prothorax in male narrower anteriorly than posteriorly ................................................................................... Gounelloeme Monné and Martins, 1974

- Frons wider than long, from flat to slightly concave; apex of antennal tubercles distant from each other; scape not arched; prothorax in both sexes distinctly narrower posteriorly than anteriorly or with similar width ....................................... 28

28(27). Elytra with eburneous maculae ................. P aramartinsia Martins and Galileo, 2005

- Elytra without eburneous maculae 29

29(28). Head and prothorax with long, erect abundant setae ......... andykea Linsley, 1932

- Head and prothorax with long, erect abundant setae ......................................................... ........................................................................................ Martinsia Chemsak and Linsley, 1957

30(26). Maxillary palpi elongate, distinctly longer than labial palpi ..................................... 31

- Maxillary palpi as long as or slightly longer than labial palpi .................................. 32

31(30). Antennomere III with acute asperities ......................................... Oeme Newman, 1840 - Antennomere III without acute asperities. .. Nesoeme Linsley and Chemsak, 1966

32(30). Pronotum with two longitudinal rows of asperities centrally or throughout; elytral pubescence sparse, allowing smooth and shining integument to be seen ....... 33

- Pronotum without asperities; elytral pubescence short, fine, somewhat dense, and integument finely and densely punctate throughout ................................................. 35

33(32). Femora pedunculate-clavate; pronotal asperities present throughout ........................ ................................................................................................................ Phrynoeme Martins, 1980

- Femora narrow, sublinear; asperities of the pronotum forming two longitudinal rows centrally ............................................................................................................................... 34

34(33). Integument with metallic reflections .......................................................................................... .............................................................. Metalloeme Touroult, Dalens and Tavakilian, 2010

- Integument without metallic reflections ........................ Ocroeme Martins et al. 1966

35(32). Prosternal process laminiform and distinct throughout ............................................. 36

- Prosternal process absent or placed distinctly below level of prosternum. ........ 38

36(35). Pronotum with a large median plate basally Placoeme Chemsak and Linsley, 1964

- Pronotum without a large median plate basally ........................................................... 37

37(36). Elytral apex uniformly acuminate .................................. Austroeme Martins et al. 1966

- Elytral apex not uniformly acuminate....... Haplidoeme Chemsak and Linsley, 1965

38(35). Pronotum in male with slightly longitudinal depression centrally; asperities of antennomere III in male slightly distinct; apical region of metafemora with dark and hard setae ................................................................................ S tenoeme Gounelle 1909

- Pronotum in male without depression; asperities of antennomere III in male very distinct; metafemora without modified setae ......................................................................... ...................... Aponoeme Martins, 1985 (only A. castanea Martins and Galileo, 1997 )

Note 1: Martinsia cordigera Touroult, Dalens and Tavakilian, 2010 , apparently, does not belong to this genus. The distance between upper eye lobes is distinctly shorter, and the scape has no distinct asperities.

Note 2: Pseudomethia Linsley, 1937 was not included in the key. According to Martins and Carvalho (1984: 215) (translated): ′The genus Pseudomethia Linsley, 1937 , examined, certainly cannot be included in Methiini and must be kept, provisionally, in Oemini ̍. Also, according to Philips and Ivie (1998: 82): ′There was some question as to whether this monotypic genus [ Pseudomethia ] belonged to Methiini ( Linsley 1962) and its exclusion from the Methiini has been continued by Martins and Carvalho (1984) who have provisionally placed it in the Oemini ̍.

Note 3: The upper eye lobes in Aponoeme amazonica ( Figures 7, 8 ) are wide and closer to each other than the width of one upper lobe; in Aponoeme castanea ( Figures 5, 6 ), they are distinctly narrower and farther apart than the width of one upper lobe. This suggests that they do not belong to the same genus. Unfortunately, we have no specimens of A. amazonica to check the overall differences.

Note 4: Proeme Martins, 1978 was not included in the key due to the problematic definition of the genus, which includes variable features.

Figures

Figures 1–4. (1–2) Vandykea tuberculata Linsley, 1932, female from Butts Canyon, California, USA: (1) dorsal habitus; (2) head, lateral view. (3–4) Eudistenia costipennis Fall, 1907, male from San Antonio, California, USA: (3) head, lateral view; (4) dorsal habitus.

Figures 9–15. (9–10) Sepaicutea fisheri Lane, 1972, female: (9) dorsal habitus; (10) ventral habitus. (11–15) Liberedaxia deslauriersi Alten, Alten and Ramey, 2009, holotype male (by Eugenio H. Nearns): (11) dorsal habitus; (12) ventral habitus; (13) lateral habitus; (14) head, frontal view; (15) thorax, ventral habitus.

Figures 16–23. Biraoeme unicolour (Martins, 1981). (16–21) Male: (16) dorsal habitus; (17) ventral habitus; (18) lateral habitus; (19) head, frontal view; (20) upper eye lobes; (21) prosternal and mesoventral processes. (22–23) Female: (22) upper eye lobes; 23) dorsal habitus.

Figures 5–8. (5–6) Aponoeme castanea Martins and Galileo, 1997, holotype male: (5) dorsal habitus; (6) upper eye lobes. (7–8) Aponoeme amazonica Martins, 1985, holotype male: (7) upper eye lobes; (8) dorsal habitus.