Anthribidae, Billberg, 1820

Orellana, Samanta & Barrios, Héctor, 2021, Catalogue of the Anthribidae (Coleoptera: Curculionoidea) of Panama, including new country records and a key to genera, Zootaxa 4904 (1), pp. 1-71: 65-66

publication ID

https://doi.org/10.11646/zootaxa.4904.1.1

publication LSID

lsid:zoobank.org:pub:85710B8C-8814-4763-AA49-C28124F92EE0

DOI

http://doi.org/10.5281/zenodo.4443954

persistent identifier

http://treatment.plazi.org/id/039C342A-6E43-EC08-FF1E-63E0FA4DF81E

treatment provided by

Plazi

scientific name

Anthribidae
status

 

Key to the genera of Anthribidae  of Panama

The following key is partially based on Jordan (1906) and Valentine (1960, 1998, 2002). The characters described may vary in species not recorded from Panama.

1. Antennal insertion dorsal ( Fig. 80View FIGURES 80–83), close to the lower portion of the eyes; scape bent and asymmetrical; club never 4-articulate (SUBFAMILY CHORAGINAE  )......................................................................... 2

1’. Antennal insertion lateral ( Fig. 81View FIGURES 80–83), or if dorsal, far from the lower portion of the eyes and antennal club 4 articulate; scape symmetrical (SUBFAMILY ANTHRIBINAE  ).............................................................. 5

SUBFAMILY CHORAGINAE 

2(1). Eyes elongate-oval, with the upper edges closer together than the lower, making frons narrower in the upper portion (Tribe Choragini  )........................................................................................... 3

2’. Eyes rounded, with the upper edges not closer together than the lower, frons not narrower in the upper portion (Tribe Araecerini  ).............................................................................................. 4

3(2). Sides of the prothorax sulcate beneath the lateral carina.............................................. Holostilpna 

3’. Sides of the prothorax not sulcate beneath the lateral carina............................................... Dysnos 

4(2’). Dorsal carina of prothorax basal; lateral carina of prothorax present ( Fig. 79View FIGURES 75–79)............................... Araecerus 

4’. Dorsal carina of prothorax distant from base (antebasal); lateral carina of prothorax absent........................ Neoxenus 

SUBFAMILY ANTHRIBINAE 

5(1’). Antennal insertions lateral; antennal club 3-articulate ( Fig. 84View FIGURES 84–87)..................................................6

5’. Antennal insertions dorsal; antennal club 4-articulate (Tribe Discotenini  )................................. Discotenes 

6(5). Lateral carina of prothorax complete, straight ( Fig. 82View FIGURES 80–83); eyes emarginate (Tribe Basitropini  , in part).................... 7

6’. Lateral carina of prothorax incomplete, various shapes ( Fig. 83View FIGURES 80–83); eyes variable..................................... 8

7(6). Apex of rostrum with rounded or angled mesial sinus ( Figs. 85View FIGURES 84–87, 9View FIGURES 9–14, 15View FIGURES 15–19)..................................... Eugonus 

7’. Apex of rostrum without mesial sinus............................................................. Eugonodes 

8(6’). Rostrum short and wide, rounded shape in frontal view; antennal insertion foveiform, triangular, encroaching on the lower margin of the eyes ( Fig. 86View FIGURES 84–87); eyes coarsely faceted; antennae covered with long, erect setae (Tribe Corrhecerini  ).......... 9

8’. Rostrum longer, quadrangular to elongate in frontal view; antennal insertion variable, not encroaching on the lower margin of the eyes ( Fig. 87View FIGURES 84–87); eyes variable; if antenna with long setae, rostrum very elongate................................. 10

9(8). Dorsal carina of prothorax basal, with acute angles ( Figs. 15View FIGURES 15–19, 20View FIGURES 20–24)...................................... Corrhecerus 

9’. Dorsal carina of prothorax antebasal ( Figs. 16View FIGURES 15–19, 21View FIGURES 20–24), with rounded angles................................ Nemotrichus 

10(8’). Eyes emarginate, with acute incisions in the lower margin.....................................................11

10’. Eyes not emarginate, oval, truncate, or at most slightly sinuous in the lower margin................................ 14

11(10). Pronotum with basal angles projected; rostrum widened at apex, without mesial sinus; less than 3 mm (Tribe Zygaenodini  ) 12

11’. Pronotum with basal angles not projected; rostrum not widened at apex, with rounded mesial sinus; more than 3 mm (Tribe Basitropini  , in part) ( Figs. 4-8View FIGURES 3–8, 10-14View FIGURES 9–14)............................................................ Phaenithon 

12(11). Dorsal carina of prothorax basal........................................................................ 13

12’. Dorsal carina of prothorax antebasal ( Figs. 73View FIGURES 70–74, 78View FIGURES 75–79).................................................... Ormiscus 

13(12). Dorsal carina of prothorax rounded in the middle; elytra emarginated together at base....................... Eusphyrus 

13’. Dorsal carina of prothorax forming an obtuse but distinct angle in the middle; basal margins of each elytron rounded.................................................................................................. Scymnopis  14(10’). Antennal insertion contiguous to the lower margin of the eye................................................. 15

14’. Antennal insertion far from to the lower margin of the eye.................................................... 16

15(14). Rostrum broad in lateral view; mandibles wide, with a strongly toothed ventral cutting edge; antennae short, not reaching the base of elytra; basal margin of pronotum sinuose; without tufts of erect scales on pronotum and elytra ( Fig. 17-19View FIGURES 15–19, 22-24View FIGURES 20–24) (Tribe Cratoparini  )................................................................................... Euparius 

15’. Rostrum flattened in lateral view, mandibles flattened, without a toothed ventral cutting edge; antennae long, reaching beyond the base of elytra; basal margin of pronotum straight to feebly sinuose; tufts of erect scales on the pronotum and elytra ( Fig. 61View FIGURES 59–64, 67View FIGURES 65–69) (Tribe Platystomini  )......................................................................... Toxonotus 

16(14’).Antennae covered with long, erect setae; rostrum elongate (except S. frontalis Jekel  , with a short rostrum), widened at apex, curved in lateral view; posterior dorsal carina of prothorax very close to the base ( Figs. 70-72View FIGURES 70–74, 75-77View FIGURES 75–79) (Tribe Stenocerini  , in part)........................................................................................ Stenocerus 

16’. Antennae not covered with very long setae; rostrum variable; posterior dorsal carina of prothorax variable.............. 17

17(16’).Posterior carina of pronotum completely basal or curved, reaching the base only at the lateral margins (Tribe Piesocorynini  , in part)............................................................................................... 18

17’. Posterior carina of pronotum completely anterior to the base (antebasal), straight.................................. 20

18(17). Tibia and tarsi of all legs covered with long, erect setae ( Figs. 44, 45View FIGURES 41–45, 49, 50View FIGURES 46–50)............................. Lagopezus 

18’. Tibia and tarsi without long erect setae....................................................................19

19(18’).Third antennal segment longer than first (scape) and second (pedicellum) together ( Figs. 51View FIGURES 51–54 to 58).......... .. Piesocorynus 

19’. Third antennal segment shorter than first and second together.......................................... Piezobarra 

20(17’).Basal margin of scutellum below the basal margin of the elytra ( Fig. 88View FIGURES 88–93) (Tribe Gymnognathini  )..................... 21

20’. Basal margin of scutellum at the same level or above the basal margin of the elytra ( Fig. 89View FIGURES 88–93)........................ 22

21(20). Mesial carina of rostrum absent; eyes oblique, sinuous in the upper margin ( Fig. 90View FIGURES 88–93); pygidium elongate and narrow, with the base not wider than the apex.................................................................... Domoptolis 

21’. Mesial carina of rostrum present; eyes somehow parallel, rounded ( Fig. 91View FIGURES 88–93); pygidium quadrangular or triangular, with the base wider than the apex......................................................................... Gymnognathus 

22(20’). Rostrum long, at least 1.5 times longer than wide, subcylindrical or flattened at apex.............................. 23

22’. Rostrum short, quadrangular or wider than long, flattened at apex...............................................26

23(22). Eyes rounded; rostrum flattened, mesial carina absent (Tribe Stenocerini  , in part............................ Allandrus 

23’. Eyes elliptical or truncate at frontal margin; rostrum subcylindrical or flattened at apex, mesial carina present........... 24

24(23’). Eyes elliptical; rostrum with a mesial carina; elytra with a row of elevated tubercles in the third interspace, usually with tufts of erect setae ( Figs. 41, 42View FIGURES 41–45, 46, 47View FIGURES 46–50) (Tribe Ischnocerini  )............................................. .. Meconemus 

24’. Eyes rounded, truncate at frontal margin; rostrum with one to three carinae; elytra variable, with smaller tubercles (Tribe Ptychoderini  ).......................................................................................... 25

25(24’) Rostrum with three strong carinae, one mesial and two lateral, occasionally covered by the vestiture ( Figs. 62-64View FIGURES 59–64, 68, 69View FIGURES 65–69)............................................................................................. Ptychoderes 

25’. Rostrum with one mesial carina................................................................ Hypselotropis 

26(22’).Eyes rounded, coarsely granulate; elytra rounded ( Fig. 43View FIGURES 41–45, 48View FIGURES 46–50) (Tribe Piesocorynini  , in part)........................................................................................... Brevibarra 

26’. Eyes oblique, finely granulate; elytra subcylindrical or quadrangular............................................ 27

27(26’). Postbasal carina of prothorax present ( Fig. 92View FIGURES 88–93).............................................................28

27’. Postbasal carina of prothorax absent..................................................................... 29

28(27). Anterior tibia with a brush-like lobe at apex ( Fig. 93View FIGURES 88–93); apex of mesosternal process rounded; elytra smooth; eyes almost touching on the inner margin........................................................................... Anthiera 

28’. Anterior tibia without brush-like lobe; apex of mesosternal process angulate; elytra with tubercles; eyes not touching on the inner margin ( Figs. 59View FIGURES 59–64, 65View FIGURES 65–69)........................................................................ Strabus 

29(27’). Rostrum with mesial carina; coxae rounded ( Figs. 60View FIGURES 59–64, 66View FIGURES 65–69)........................................... Homocloeus 

29’. Rostrum without mesial carina; coxae angulate.................................................... .. Monocloeus