Key to the Genera of New World Hybosoridae
(By Ocampo 2001)
1
.
Metatibia with transverse ridge near middle of external edge (Fig. 1a).
1'.
Metatibia without transverse ridge near middle of external edge (Fig. 1b).
Figure 1a
Figure 1b
2
(
1
).
Labrum with 7-11 teeth (Fig. 2).
Hybosorus
2'.
Labrum with 6 or fewer teeth.
3
(
2
).
Frontoclypeal suture with medial, subtriangular tubercle.
Pachyplectrus
3'.
Frontoclypeal suture without medial tubercle.
4
(
3
).
Antenna with 10 segments.
4'.
Antenna with 9 segments.
5
(
4
).
Eyes clearly visible in dorsal view (Fig. 3a)
.
Apalonychus
5'.
Eyes slightly visible in dorsal view (Fig. 3b).
Coilodes
Figure 3a
Figure 3b
6
(
4
).
Protibia with 2 large teeth (Fig. 4a). Labrum reflexed.
Hapalonychoides
6'.
Protibia with 3 large teeth (Fig. 4b). Labrum not reflexed.
Metachaetodus
Figure 4b
Figure 4b
7
(
1
).
Elytral disc nearly flat, sides separated from disc by strong carina.
7'.
Elytral disc convex, carina (e) present or not.
8
(
7
).
Head with frontoclypeal juncture rounded, not forming a sharp angle (Fig. 5a).
8'.
Head with frontoclypeal juncture forming a sharp angle (Fig. 5b).
Cryptogenius
Figure 5a
Figure 5b
9
(
8
).
Elytra tuberculate. Metathoracic wings not developed or vestigial.
Callosides
9'.
Elytra not tuberculate. Metathoracic wings well developed.
Anaides
10
(
7
).
Meso- and metatibia not deeply, laterally flattened. (Fig. 6a)
.
10'.
Meso- and metatibia deeply, laterally flattened (Fig. 6b).
Daimothoacodes
Figure 6a
Figure 6b
11
(
10
).
Antenna with 10 segments. Mandible with 1 tooth. Elytral disc not punctate or with 5 punctate striae.
11'.
Antenna with 9 segments. Mandible with 2-3 teeth. Elytral disc with 7-9 punctate striae.
Dicraeodon
12
(
11
).
Pronotum with posterior, medial depression.
Hybochaetodus
12'.
Pronotum without posterior, medial depression (punture may be present).
Chaetodus
