Myoplatypus
Creators: name: Kirkendall, Lawrence R.
name: Atkinson, Thomas H.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Myoplatypus

description: Key to males of Myoplatypus. Total body lengths used in the key are taken from Table 1. Specimens should also be carefully compared with the photographs, bearing in mind body size.
1. Spines on ventrite 3 short (can be absent), as wide as tall; southeastern or southern USA (1 temperate species).... flavicornis
- Spines on ventrite 3 longer; collected from American tropics (9 tropical species)................................... 2
2. In addition to spines on ventrite 3, spines present on ventrite 4 (can be quite low or occasionally absent in brevicornis); mid- or upper-elevation species................................................................................. 3
- No paired spines on ventrite 4........................................................................... 4
3. Smaller, <4 mm long; interstriae 3 not ending in a prominent tooth..................................... quadricornis
- Larger,> 4.5 mm long; interstriae 3 ending in a prominent tooth........................................ brevicornis
4. Length about 2 mm; lowland species................................................................. sicarius
- Length about 3 mm or more (lowland or upland species)...................................................... 5
5. Simple declivity, partly covered in short dense setae; lowland species........................................ petrovi
- Declivity with strongly developed posterolateral angles (one sp. with only short, acute projections), never smooth with dense short setae; mid- to upper elevation species................................................................. 6
6. Declivity fairly simple, posterolateral angles forming an equilateral triangle; interstriae 1–4 carinate for at least final 1/3 of their length.................................................................................... nicaraguensis
- Declivity with posterolateral angles weakly to strongly produced horizontally; interstriae 1–4 carinate for final ¼ or less of their length.............................................................................................. 7
7. Interstriae 1 ending in a long, thick spine as long as posterolateral angle projection................................. 8
- Interstriae 1 not ending in a long thick spine................................................................ 9
8. Shorter, ca 4.0 mm.............................................................................. connexus
- Larger, ca 4.7 mm ................................................................................ senexus
9. Posterolateral angle produced into a horizontal long, blunt spine.......................................... biprorus
- Posterolateral angle produced downwards at an angle................................................... prenexus
description: Published as part of Kirkendall, Lawrence R. & Atkinson, Thomas H., 2023, The rare genus Myoplatypus (Coleoptera: Curculionidae: Platypodinae): three new species, new reports, and first records for South America, pp. 301-321 in Zootaxa 5351 (3) on page 319, DOI: 10.11646/zootaxa.5351.3.1, http://zenodo.org/record/8391656