Pediobius
Creators: name: Cao, Huan-Xi
name: Salle, John La
name: Zhu, Chao-Dong
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Eulophidae
Pediobius

description: Key to the Chinese species of Pediobius
1 Both sexes: occiput rounded posteriorly, never margined (Figs 32 a–c); pronotum distinctly elongate, without clearly delimited collar and neck (Figs 32 a–c); propodeum with plica in posterior half produced into a strongly raised crest overhanging the posterior spiracular area (Fig. 32 b); apical tarsomere distinctly swollen, slightly shorter than or nearly subequal to the combined length of three preceding tarsomeres (Fig. 32 a)................................................ P. yunanensis Liao
- Both sexes: occiput at least partially margined posteriorly (e.g., Fig. 1 a); pronotum not elongate, with clearly indicated collar (e.g., Fig. 1 a) (except P. bruchicida); propodeum with plica never produced into a crest overhanging the posterior spiracular area; apical tarsomere normal, not swollen, subequal to or slightly longer than each of the three preceding tarsomeres (e.g., Fig. 1 h)................................................................................................. 2
2(1) Both sexes: notaular depressions deep and inner margins step-like (e.g., Fig. 2 a); posterior pair of mesoscutal setae situated on MLM (e.g., Fig. 2 a)....................................................................................3
- Both sexes: notaular depressions shallow (e.g., Fig. 4 a) or if deep then inner margins not step-like (e.g., Fig. 31 a); posterior pair of mesoscutal setae situated on notaular depressions (e.g., Fig. 4 a)...........................................6
3(2) Both sexes: antenna short and stout (Figs 27 c–d); frontovertex with a slightly arched frontal carina reaching eyes (Fig. 2 7 d);
propodeum with a short median carina anteriorly that divides into short submedian carinae posteriorly (Figs 27 a–b), without a crest; posterior margin of Gt1 straight (Figs 27 a–b)....................................... P. fujianensis Sheng & Li - Both sexes: antenna long and slender (e.g., Fig. 2 e); frontovertex without frontal carina (e.g., Fig. 33 b); propodeum with submedian carinae fused together anteriorly and raised to form a crest against the strongly protruding dorsellum (e.g., Fig. 2 b); posterior margin of Gt1 at least slightly protruding medially, not straight (e.g., Fig. 2 a)................ (alcaeus -group)... 4
4(3) Female: scutellum without sublateral grooves (Fig. 3 a); frontofacial sutures extending to vertex, with branches on vertex visible in dorsal view (Fig. 3 a); fore wing hyaline (Fig. 3 d). Male unknown................ P. petiolapilus Cao & Zhu, sp. n.
- Both sexes: scutellum with sublateral grooves that join together posteriorly to form a U-shaped groove (Figs 1 a, 1c, 2a); frontofacial sutures not extending to vertex such that branches invisible in dorsal view (Figs 1 a, 2a); fore wing not hyaline, with infuscate area below STV (Figs 1 f, 2f).................................................................5
5(4) Both sexes: scutellum smooth within the U-shaped groove (Figs 1 a, 1c); petiole with two setae on each side; gaster subcircular with Gt1 covering about basal 2/5 of dorsal surface, Gt6 about 6× as broad as long, and Gt7 nearly invisible (Fig. 1 a).................................................................................... P. bisulcatus Cao & Zhu, sp. n.
- Female: scutellum reticulate within the U-shaped groove (Figs 2 a, 2c); petiole with one seta on each side; gaster long-ovate with Gt1 covering basal 1/5 dorsal surface, Gt6 elongate, about 1.6× as broad as long, and Gt7 distinctly elongate, about 1.4× as long as broad (Figs 2 a–d). Male unknown.......................................... P. elongatus Cao & Zhu, sp. n.
6(2) Both sexes: funicle 4-segmented and clava one-segmented, and separated by short distinct petioles (Figs 23 e–f, 31d).......7
- Female: funicle 3-segmented and clava 2-segmented. Male: funicle 3-segmented (e.g., Fig. 4 b) or if 4-segmented then funicular segments not separated by short distinct petioles (e.g., Fig. 9 f)...............................................8
7(6) Both sexes: tibiae pale or apically to entirely brownish yellow (Figs 23 g–i); head very thick, in dorsal view semicircular (Fig. 23 a); posterior margin of MLM distinctly emarginate, separated by a distinct hole from base of scutellum (Fig. 23 a); scutellum anterolaterally with longitudinal striation (Fig. 23 a); propodeum with strip between submedian carinae not raised anteriorly and submedian area not impressed at posterior margin (Fig. 23 a); metatibial spur reaching apex of basal tarsomere (Fig. 23 i).................................................................................. P. atamiensis (Ashmead)
- Female: tibiae metallic (Figs 31 a–b); head transverse (Fig. 31 a); posterior margin of MLM not emarginate (Fig. 31 c); scutellum reticulate without longitudinal striation (Fig. 31 c); propodeum with strip between submedian carinae in lateral view raised anteriorly, and submedian area impressed at posterior margin (Fig 31 a); metatibial spur very short, not reaching apex of basal tarsomere (Fig. 31 g). Male unknown................................................... P. tetratomus (Thomson)
8(6) Both sexes: posterior margin of MLM distinctly emarginate, separated by a distinct hole from base of scutellum (e.g., Figs 6 a, 7a); inner corner of axilla distinctly depressed (e.g., Figs 6 a, 7a); scutellum smooth antero-medially (e.g., Figs 6 a, 7a)........................................................................................ (crassicornis -group)... 9
- Both sexes: posterior margin of MLM not or only slightly emarginate, never separated by a hole from base of scutellum; inner corner of axilla not depressed; sculpture of scutellum different................................................. 11
9(8) Both sexes: MLM slightly transversely reticulate anteriorly, reticulate medially, and with longitudinal striation along notaular depressions (Figs 7 a, 7c); apex of dorsellum strongly protruding medially (Figs 7 a, 7c). Female: F3 longer than broad (Fig. 7 g).................................................................................... P. elasmi (Ashmead)
- Both sexes: MLM reticulate, without longitudinal striation along notaular depressions (e.g., Figs 6 a, 6c); apex of dorsellum rounded, not or only slightly protruding medially (e.g., Figs 6 a, 6c). Female: F3 as long as broad..................... 10
10(9) Both sexes: propodeum with a fine median carina............................................... P. pupariae Yang
- Both sexes: propodeum without a median carina (Figs 6 a, 6c).............................. P. crassicornis (Thomson)
11(8) Both sexes: notaular depressions large and deep, as long as broad and distance between depressions less than width of a depression (e.g., Figs 24 a–b, 25a–b).....................................................................12
- Both sexes: notaular depressions not so large, much shorter than broad and distance between depressions greater than width of a depression, only a little narrower than base of scutellum....................................................14
12(11) Female: scape and tibiae brownish yellow, but pedicel and flagellum pale brown, without metallic reflections (Figs 24 c–f); antenna stout, slightly clavate, with F1 subquadrate and F2 and F3 distinctly transverse (Fig. 24 c); body stout (Figs 24 a–b). Male unknown....................................................................... P. bethylicidus Kerrich
- Both sexes: scape, tibiae, pedicel and flagellum metallic (e.g., Figs 25 a, 25c, 25e–f); antenna slender, not clavate, F1–F3 much longer than broad (e.g., Figs 25 e–f); body slender (e.g., Fig. 25 a)............................................... 13
13(12) Both sexes: vertex almost smooth, with a median groove extending from median ocellus to occipital carina (Fig. 22 a); notauli extending to a straight, deep, transverse fold connecting the lateral lobes across the middle; notaular depressions strikingly broad, separated by a fine median longitudinal ridge (Fig. 22 a); scutellum basally almost smooth medially (Fig. 22 a)........................................................................................... P. anomalus (Gahan)
- Both sexes: vertex reticulate, without a median groove; notauli distinct only in anterior third and not transversely extended; notaular depressions moderately broad with space between them narrow but not reduced into a longitudinal ridge; scutellum completely sculptured (Fig. 25 a)....................................................... P. foveolatus (Crawford)
14(11) Both sexes: head very thick, semicircular in dorsal view (Figs 26 a–c); fore wing with speculum open below (Fig. 26 f); mesoscutum finely reticulate, scutellum finely, longitudinally striate; metatibial spur straight, reaching a little beyond apex of basal tarsomere (Fig. 26 i); ocelli arranged in a strongly acute-angle triangle (Fig. 26 a).......... P. fraternus (Motschulsky)
- Both sexes: head usually much broader than median length, not semicircular; other features variable, but not in above combination..............................................................................................15
15(14) Both sexes: fore wing with speculum widely open below (Fig. 21 g); vertex depressed between eye, posterior ocellus and posterior margin (Figs 21 a, 21c); posterior pair of mesoscutal setae shifted forward and very near the front margin of notaular depressions (Fig. 21 a); mesoscutum in anterior third distinctly transversely striate (Figs 21 a, 21c)........ P. saulius (Walker)
description: Published as part of Cao, Huan-Xi, Salle, John La & Zhu, Chao-Dong, 2017, Chinese species of Pediobius Walker (Hymenoptera: Eulophidae), pp. 1-71 in Zootaxa 4240 (1) on pages 7-8, DOI: 10.5281/zenodo.375759