Home >> Checklist: Weevils of North America (WoNA) >> Key: Weevils of North America (WoNA)
Taxon:
Display as:
Head
   chewing
  Antennae: Insertion
   Proximally on head, laterally on short and flat rostrum
   On rostrum, near the base
   Proximally on head, immediately adjacent to eye
   Distally on head, near or on apex of rostrum
   Lateral at the middle of the rostrum or dorsal near the base
   Proximally on head and at least length of antennomere 1 from eye
  Antennae: Funicle - number of articles
   Two (2)
   Three (3)
   Six (6)
   Eight (8)
   Five (5)
   Seven (7)
   Four (4)
   One (1)
  Eyes: type
   Compound, large, and approximate ventrally on head
   Compound, large, and approximate dorsally on head
   Absent
   Compound and rounded
   Compound and elongate-oval
  Antennae: Scape - reach of scape
   Beyond hind margin of eye
   Not reaching anterior margin of eye
   Just slightly beyond hind margin of eye
   Reaching or beyond the anterior margin of eye
  Mouthparts: Labrum - visibility of labrum
   Visible, articulated
   Invisible (fused with head)
  Mouthparts: Labium - visibility of prementum
   Invisible (withdrawn into oral cavity)
   Visible (or mostly visible)
  Antennae appearance
   conspicuous
   short
   inconspicuous
   long
  Antennae - antennal shape
   symmetrical, elbowed
   symmetrical, straight
Thorax
  Prothorax: Ventral channel for rostrum
   Absent
   Present
  Mesothorax: Mesepimeron - orientation
   Strongly ascended, visible dorsally
   Not ascended, not visible dorsally
  Mesothorax: Ventral channel for rostrum
   Absent
   Present
Legs
  Trochanter: Shape
   Cylindrical
   Triangular
  Tarsi: Pseudotetramerous
   Absent (truly tetramerous)
   Absent
   Present (4th tarsomere very small)

Weevils of North America (WoNA)

Nico M. Franz, M. Lourdes Chamorro, David Fleming, Sangmi Lee, Gregory P. Setliff & Charles W. O'Brien; with support from ASUHIC members.
Species Count: 1297

Anthribidae

Attelabidae

Belidae

Brentidae

Curculionidae

Dryophthoridae

Erirhinidae

Geotrupidae

Ithyceridae

Nanophyidae

Nemonychidae

Raymondionymidae

Rhynchitidae
ASU
Bon Earth
iDigBio
The National Science Foundation
USDA
USGS