Oideterus, Thomson, 1857

Vlasak, Josef & Santos-Silva, Antonio, 2022, Descriptions, notes, and a new record in Oideterus Thomson (Coleoptera, Cerambycidae, Prioninae, Anacolini), Zootaxa 5175 (5), pp. 535-547 : 546

Key to females of Oideterus (adapted from Galileo & Santos-Silva 2015)

See photographs on Bezark (2022) and Pirkl (2022).

Unknown females: O. andrarius ( Galileo, 1987) ; O. birai Galileo, Komiya & Santos-Silva, 2018 ; O. buquetii Thomson, 1857 ; O. crenatocerus ( Galileo, 1987) ; O. niger Botero, Galileo & Santos-Silva, 2019 ; and O. tibiaprocerus Botero, Galileo & Santos-Silva, 2019 .

1. Elytra proportionally short, not entirely covering the fourth visible abdominal segment.............................. 2

- Elytra proportionally long, totally covering the fourth visible abdominal segment................................... 4

2(1). Elytron slightly shorter than 3.0 times maximum width of elytron. Colombia................. O. lobicollis (Bates, 1875)

- Elytron longer than 3.0 times maximum width of elytron...................................................... 3

3(2). Lateral gibbosities on pronotum with large smooth area; distance between apices of lateral tubercles of prothorax about 1.8 times maximum width of elytron. Colombia........................ O. latithorax Botero, Galileo & Santos-Silva, 2019

- Lateral gibbosities on pronotum lacking smooth area or the area is small; distance between apices of lateral tubercles of prothorax about 1.5 times maximum width of elytron. Ecuador......................... O. elegans ( Waterhouse, 1880)

4(1). Antennae at least slightly surpassing elytral apex............................................................ 5

- Antennae not reaching elytral apex....................................................................... 8

5(4). Outer margins of elytra not parallel-sided on basal 2/3. Ecuador............................. O. ecuadorensis sp. nov.

- Outer margins of elytra subparallel-sided at least on basal half.................................................. 6

6(5). Dorsal integument mostly shining metallic. Ecuador.......................................... O. leoninus sp. nov.

- Dorsal integument not shining metallic.................................................................... 7

7(6). Elytra strongly dehiscent along sutural margins on basal half; elytra about as long as twice humeral width. Colombia............................................................................ O. farallonensis Ascuntar-Osnas, 2018

- Elytra slightly dehiscent along sutural margins on basal half; elytra distinctly shorter than twice humeral width. Ecuador..................................................................... O. inaequalis Galileo & Santos-Silva, 2015

8(4). Outer margin of elytra somewhat enlarged about middle. Costa Rica, Panama.............. O. magnificus ( Galileo, 1987)

- Outer margin of elytra not enlarged at middle, more or less convergent from base to apex or subparallel from base to about distal third................................................................................................ 9

9(8). Projections of antennomeres VII–X long (apex of projection surpasses middle of next antennomere); body wide. Colombia, Ecuador..................................................................... O. dichotomus ( Galileo, 1987)

- Projections of antennomeres VII–X short (apex of projection not reaching middle of next antennomere); body slender. Colombia...................................................................... O. pallidus ( Galileo, 1987)