Devernodes chthonia, Grebennikov, 2018

Grebennikov, Vasily V., 2018, Discovery of Lymantini weevils (Coleoptera: Curculionidae: Molytinae) outside the Americas: Devernodes, a new genus for five new species from Southeast Asia, Zootaxa 4500 (3), pp. 363-380 : 369

Devernodes chthonia sp. n.

Figs 4A–G , 7D,J , 8D,J , 9A,B,D–G , 10 , 11 .

Diagnostic description. Holotype male ( Figs 4A–G , 7D,J , 8D,J, 8A,B , 10 , 11 ), body length 3.1 mm, DNA barcode GenBank accession number in Fig. 10 ; unique combination of morphological characters in Table 3.

Material examined. Holotype ( CNC): “ VIETNAM, Tam Dao, N 2127'54" E10538'44", 12.v.2012, 1218m, sift02, V.Grebennikov”, “CNCCOLVG00004339” . Paratypes ( CNC): 6 specimens, as in Fig. 10 , same locality as holotype .

Distribution. Known only from the type locality, the Tam Dao Mountains in northern Vietnam ( Fig. 12 ). Elevation: 1,128 –1,229 m.

Etymology. One of the seven daughters of Alcyoneus; noun in apposition.

Figures

FIGURE 4. Devernodes chthonia sp. n., holotype. A–D: habitus, dorsal (A), lateral (B), ventral (C), fronto-lateral (D); E–G: aedeagus, lateral (E), dorsal (F), ventral (G).

FIGURE 7. Devernodes, clades A–F, heads dorsal (A–F) and lateral (G–L), holotypes (A, C–F) and paratype 2345 (B). A,B,G,H: D. alkippe sp. n., C, I: D. asteria sp. n., D, J: D. chthonia sp. n., E, K: D. drimo sp. n., F, L: D. methone sp. n.

FIGURE 8. Devernodes, clades A–F, right antennae (A–F) and declivity of left elytron (G–L), holotypes (A, C–F) and paratype 2345 (B). A,B,G,H: D. alkippe sp. n., C, I: D. asteria sp. n., D, J: D. chthonia sp. n., E, K: D. drimo sp. n., F, L: D. methone sp. n. Numbering of elytral striae does not necessarily imply homology.

FIGURE 9. Devernodes, details. A–B: D. chthonia sp. n., holotype, male, ventral (A: mouthparts, B: genitalia and apical sclerites); C: D. asteria sp. n., holotype, male sternites VIII and IX; D–G: D. chthonia sp. n., paratype 4368, female genitalia and apical sclerites (D, F: ventral, E: right dorso-lateral).

FIGURE 10. Neighbour-joining clustering of 26 DNA barcoded Devernodes type specimens performed using the online BOLD tree-building engine and Kimura 2-parameter. Branch length shown is proportional to relative divergence with scale bars indicating 0.02 units. Red dots denote illustrated specimens from each of six clusters; “HT” denotes holotypes; images are to scale. Unless otherwise indicated, all type specimens are stored in CNC.

FIGURE 11. Maximum Likelihood inference phylogram of Devernodes weevils from a three fragment dataset with 3223 aligned positions. Digits at internodes are bootstrap values of 60% and more. Branch length shown is proportional to relative divergence with scale bars indicating 0.2 units.

FIGURE 12. Geographical distribution of recent Lymantini. Northernmost limits in North America follow Anderson (2016); southernmost limits are based on country records (Alonso-Zarazaga & Lyal 1999) and are fuzzy to reflect uncertainty. New country records (Peru, Guyana, Surinam) are based on unpublished records of Ithaura (Robert Anderson, personal communication). Map design: Jessica Hsiung.