Arsipoda Erichson 1842
Creators: name: Samuelson, Allan
name: Biondi, Maurizio
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Arsipoda

description: Genus Arsipoda Erichson, 1842
Arsipoda Erichson, 1842: 235.
Eratosthenes Clark, 1864: 261. (synonymized by Chapuis 1875)
Key to New Caledonian species of Arsipoda
1. Frontal grooves very deeply impressed and elongate, generally continued to postantennal region (Fig. 4A). Pronotal punctuation on disc formed by very large and strongly impressed punctures, but almost absent behind antebasal sulcus (Fig. 4A). Pronotum slightly convex. Median lobe of aedeagus in Figs 8 A–B. Spermatheca as in Fig. 11A .................. Arsipoda agalma Samuelson, 1973
– Frontal grooves from weakly to strongly impressed but not clearly continued to postantennal region (Figs 4 B–F, 5A–F). Pronotal punctuation from very weakly to distinctly impressed, but formed by smaller punctures, generally including base of pronotum behind antebasal sulcus (Figs 4 B–F, 5A–F). Pronotum distinctly convex ............................................................................................................... 2
2. Antennae clearly bicolored with antennomeres 1–4 yellow and 5–11 dark brown (Fig. 3A). Maxillary and labial palpi blackish, distinctly darker than other mouth parts. Body yellowish. Pronotal punctuation very weakly impressed (Fig. 5E). Median lobe of aedeagus in ventral view laterally parallel and apically dominantly and regularly rounded (Fig. 10B). Spermatheca as in Fig. 11Q ............... A. wanati sp. nov.
– Antennae largely yellowish or brownish, often gradually and slightly darkened towards distal part (Figs 1 B–I, 2A–I, 3B–C). Maxillary and labial palpi similar in color to other mouth parts. Body from yellowish to blackish. Pronotal punctuation more distinctly impressed (Figs 4 B–F, 5A–D, 5F). Median lobe of aedeagus in ventral view laterally sinuate or tapered, rarely subparallel; apically acute, subtriangular or with an evident median small tooth (only in A. povilaensis sp. nov. broadly rounded, but different in lateral view) (Figs 8 C–I, 9A–I, 10A, C–D)............................................... 3
3. Pronotal punctuation sparsely and unevenly distributed (Fig. 4C). Median lobe of aedeagus in ventral view distinctly enlarged at basal fourth and clearly tapered from base to apex; in lateral view dorsally bisinuate (Fig. 8E). Spermatheca with elongate basal part and short distal appendix (Fig. 11D)............................................................................................................... A. doboszi sp. nov.
– Pronotal punctuation densely and evenly distributed (Figs 4B, D–F, 5A–D, F). Median lobe of aedeagus in ventral view not enlarged at basal fourth and dorsally not bisinuate in lateral view (Figs 8 C–D, F–I, 9A–I, 10A, C–D). Spermatheca generally with basal part subglobose, otherwise distal appendix distinctly more elongate (Fig. 11 B–C, E–P, R–S) .................................................... 4
4. Elytra with wide and flat interstriae, and punctuation formed by small punctures (Fig. 6A). Dorsal integuments black without metallic reflection (Fig. 1B). Median lobe of aedeagus in ventral view apically with a narrow, elongate and flat extension (Fig. 8C). Spermatheca with single-coiled ductus (Fig. 11B)..................................................................................................................... A. atra sp. nov.
– Elytra with narrower and subconvex interstriae, and punctuation generally formed by larger punctures (Fig. 6 B–C). Dorsal integuments yellowish, bronze, dark green or blackish, generally with distinct metallic reflection (Figs 1C, E–I, 2A–I, 3B–C). Median lobe of aedeagus (Figs 8D, F–I, 9A–I, 10A, C–D) in ventral view apically without elongate and flat extension. Spermatheca with uncoiled ductus (Fig. 11C, E–P, R–S) .............................................................................................................. 5
5. Body smaller (LB: ♂ Ĺ 1.90 and ♀ Ĺ 1.84 mm). Dorsal integuments blackish, with evident greenish metallic reflection (Fig. 1F). Elytra comparatively shorter (WE/LE: ♂ Ż 0.70 and ♀ generally Ż 0.69). Median lobe of aedeagus shorter (LAED Ĺ 0.71 mm) (Fig. 8G). Spermatheca with thick ductus (Fig. 11F).......................................................................................... A. evax Samuelson, 1973
– Body larger (LB: ♂ generally> 1.90 and ♀> 1.84 mm). Dorsal integuments variable in color from yellowish to blackish, generally with metallic reflection (Figs 1C, E, G–I, 2A–I, 3B–C). Elytra comparatively longer (WE/LE: ♂ <0.70 and ♀ generally <0.69). Median lobe of aedeagus always longer (LAED> 0.71 mm). Spermatheca with thinner ductus (with the exception of A. povilaensis sp. nov. and A. yiambiae; but these species are clearly different in size, sculpture and color from A. evax) (Fig. 11C, E, G–P, R–S) ........................................................................................................... 6
6. Pronotal punctuation with large and strongly impressed punctures, in some cases differently sized (Figs 4D, 5 B–C)................................................................................................................................. 7
– Pronotal punctuation with more weakly impressed and always evenly sized punctures (Figs 4B, E–F, 5A, D, F) ............................................................................................................................................ 9
7. Dorsal integuments blackish with evident green metallic reflection (Fig. 2G). Median lobe of aedeagus in ventral view more slender, laterally tapered towards apex (Fig. 9H); ventral sulcus narrow and moderately but distinctly impressed from base to apex. Spermatheca as in Fig. 11N ..... ................................................................................................................................... A. rutai sp. nov.
– Dorsal integuments yellowish, slightly metallic or light brown with evident bronze reflection (Figs 1I, 2E). Median lobe of aedeagus in ventral view more thickset, laterally parallel or tapered toward base (Fig. 9A, F) .................................................................................................................... 8
8. Pronotum distinctly transverse (WP/LP: ♂ Ż 1.64), with evenly sized punctuation (Fig. 5B). Dorsal integuments yellowish, slightly metallic (Fig. 2E). Median lobe of aedeagus (Fig. 9F) short (LAED Ĺ 0.79 mm; LE/LAED Ż 1.88) in ventral view laterally tapered toward base; ventral sulcus complete, shallow, narrowed at basal third. Female unknown............................................. A. punctata sp. nov.
– Pronotum weakly transverse (WP/LP: ♂ <1.64) with unevenly sized punctuation (Fig. 4D). Dorsal integuments light brown with evident bronze reflection (Fig. 1I). Median lobe of aedeagus (Fig. 9A) more elongate (LAED> 0.79 mm; LE/LAED <1.88) in ventral view, laterally subparallel; ventral sulcus incomplete, wide and open in apical part, then partially closed. Spermatheca as in Fig. 11I ........................................................................................................ A. isola Samuelson, 1973
9. Antennae distinctly elongate (LAN/LB: ♂ Ż 0.70, ♀ generally Ż 0.60) (Figs 1E, 2A, F, 3C)........ 10
– Antennae shorter (LAN/LB: ♂ <0.70, ♀ <0.60) (Figs 1C, G–H, 2B–D, H–I, 3B)....................... 13
10. Elytra more elongate (WE/LE: ♂ and ♀ Ĺ 0.60) (Fig. 1E). Median lobe of aedeagus slender (Fig. 8F). Basal part of spermatheca globose (Fig. 11E) ..................................................... A. elongata sp. nov.
– Elytra shorter (WE/LE: ♂ and ♀> 0.60). Median lobe of aedeagus more thickset (Figs 9B, 9G, 10D). Basal part of spermatheca more elongate or olive shaped (Fig. 11J, M, S) ...........................11
11. Median lobe of aedeagus (Fig. 10D) in ventral view laterally narrower in middle part; apical part widely lanceolate; ventral sulcus wide and deeply impressed from base to subapical part; in lateral view, median lobe rather straight. Spermathecal capsule (Fig. 11S) slender and generally curved ........................................................................................................... A. gomezzuritai sp. nov.
– Median lobe of aedeagus (Fig. 9B, G) in ventral view laterally subparallel or tapered but not medially narrow; apical part not lanceolate in distal half; ventral sulcus obliterate or narrower and more weakly impressed in basal half; in lateral view, median lobe always more or less curved. Spermathecal capsule thickset and straight (Fig. 11J, M) ............................................................... 12
12. Median lobe of aedeagus (Fig. 9G) in ventral view fusiform, laterally clearly tapered from base to apex; ventral sulcus more clearly impressed in distal half. Spermatheca (Fig. 11M) with clearly globose basal part ............................................................................. A. rostrata Gómez-Zurita, 2010
– Median lobe of aedeagus (Fig. 9B) in ventral view thickset, laterally subparallel but distinctly narrowed at apical fourth; ventral sulcus obliterate. Spermatheca (Fig. 11J) with more elongate basal part, olive-shaped.............................................................................................. A. longifrons sp. nov.
13. Pronotum strongly transverse (WP/LP Ż 1.83) (Fig. 5D). Dorsal integuments reddish, sometimes with darker head and pronotum (Fig. 2I). Median lobe of aedeagus with triangular, apically rounded distal part (Fig. 10A). Spermatheca as in Fig. 11P ........................................... A. transversa sp. nov.
– Pronotum less transverse (WP/LP <1.83). Dorsal integuments bronze, dark green or blackish, with metallic lustre, or yellowish, at least on elytral disc, with weak metallic reflection (Figs 1C, G–H, 2B–D, H, 3B). Median lobe of aedeagus distally subrounded with or without median tooth, or triangular but with acute apex (Figs 8D, H–I, 9C–E, I, 10C).......................................................... 14
14. Sides of pronotum distinctly convex (Figs 4F, 5A, F)..................................................................... 15
– Sides of pronotum straight or slightly concave (Fig. 4B, E) ........................................................... 17
15. Dorsal integuments blackish with metallic lustre (Fig. 2C). Median lobe of aedeagus in lateral view evenly curved from base to apex (Fig. 9D). Spermatheca as in Fig. 11K .......... A. paniensis sp. nov.
– Dorsal integuments yellowish (Figs 2D, 3B). Median lobe of aedeagus in lateral view sinuate or straight (Figs 9E, 10C)..................................................................................................................... 16
16. Sides of pronotum clearly convex, with smaller and blunt anterior angles (Fig. 5F). Median lobe of aedeagus slender, laterally straight above the basal part (Fig. 10C). Collum of spermatheca thickset (Fig. 11R)............................................................................................. A. yiambiae Samuelson, 1973
– Sides of pronotum slightly convex, with wider and pointed anterior angles (Fig. 5A). Median lobe of aedeagus thicker, laterally sinuate (Fig. 9E). Collum of spermatheca thin (Fig. 11L) ......................................................................................................... A. povilaensis sp. nov.
17. Dorsal integuments evenly bronze or dark bronze with strongly metallic lustre. Hind femora generally darkened in distal half (Figs 1C, 2B). Median lobe of aedeagus slender in ventral view, and with fusiform dorsal ligula (Figs 8D, 9C)................................................................................. 18
– Dorsal integuments yellowish (in A. geographica sometimes yellowish on elytral disc only) with weakly metallic lustre. Hind femora never darkened (1G–H, 2H). Median lobe of aedeagus thicker in ventral view, and with dorsal ligula basally wide (Figs 8 H–I, 9I)............................................... 19
18. Body smaller (LB: ♂ Ĺ 2.56 mm and ♀ Ĺ 2.75 mm). Pronotal transverse sulcus thin (Fig. 4B). Median lobe of aedeagus in ventral view laterally parallel; in lateral view, apical part strongly curved dorsally (Fig. 8D). Spermatheca as in Fig. 11C ................................................ A. communis sp. nov.
– Body larger (LB ♂> 2.56 mm). Pronotal transverse sulcus large (Fig. 4E). Median lobe of aedeagus in ventral view laterally sinuate; in lateral view, apical part straight (Fig. 9C). Female unknown .............................................................................................................. A. montana sp. nov.
19. Elytral interstriae distinctly convex (Fig. 6B). Pronotal antebasal sulcus deeply impressed (Fig. 6B). Elytral suture and lateral margin often darkened (Fig. 1G). Median lobe of aedeagus (Fig. 8H) in ventral view apically widely rounded with a very thin median small tooth; in lateral view median lobe with ventrally bent apical part. Spermatheca (Fig. 11G) with globose basal part and thickset collum ........................................................................................ A. geographica Gómez-Zurita, 2010
– Elytral interstriae subconvex or flat (Fig. 6C). Pronotal antebasal sulcus weakly or moderately impressed (Fig. 6C). Elytra evenly yellowish (Figs 1H, 2H). Median lobe of aedeagus (Figs 8I, 9I) in ventral view apically subtriangular or rounded but with larger median tooth. Spermatheca (Fig. 11H, O) with pear-shaped or olive-shaped basal part and slender collum ............................................... 20
20. Pronotum comparatively shorter (generally WP/LP: ♂ and ♀ Ĺ 1.55). Median lobe of aedeagus (Fig. 9I) in ventral view distinctly thickset, laterally sub-parallel, clearly enlarged at apical fourth; ventral sulcus V-shaped, clearly impressed. Spermatheca (Fig. 11O) with pear-shaped basal part; collum about as long as basal part ....................................................... A. shirleyae Samuelson, 1973
– Pronotum comparatively longer (generally WP/LP: ♂ and ♀> 1.55). Median lobe of aedeagus (Fig. 8I) in ventral view more slender, fusiform, but narrower in pre-apical part; ventral sulcus wide and moderately impressed in basal half. Spermatheca (Fig. 11H) with olive-shaped basal part; collum clearly shorter than basal part.................................................................... A. gressitti sp. nov.
description: Published as part of Samuelson, Allan & Biondi, Maurizio, 2016, Taxonomic revision of the genus Arsipoda Erichson, 1842 (Coleoptera, Chrysomelidae) in New Caledonia, pp. 1-61 in European Journal of Taxonomy 230 on pages 4-7, DOI: 10.5852/ejt.2016.230, http://zenodo.org/record/3840408