68 Invasive Stink Bugs and Related Species (Pentatomoidea)
40’ Posterior margin of pronotum not distinctly concave; antennae 4-segmented; rostral groove
not margined by distinct ridges, and abdominal spine shorter; India (Figure 2.29H) ........
.............................................................................................................................Degonetini
41(39) Propleura expanded forwards and upwards, covering or nearly covering base of each
antenna; Holarctic (Figures 2.8I; 2.19A; 2.28A) .....................................................Aeliini
41’ Propleura not expanded forwards and upwards, base of antennae exposed ..................... 42
42(41) Female terminalia with basal plates quite small, nearly obscured under posterior margin of
last abdominal segment (Figure 2.8J); posterior margin of male pygophore usually with
a distinct, medial slit, sometimes becoming more rounded (Figures 2.8K, L); New World
(Figures 2.23I, J; 2.31K)...................................................................................Procleticini
42’ Female terminalia with basal plates larger, more conspicuous; posterior margin of male
pygophore usually entire, not with deep slit or rounded emargination ............................ 43
43(42) Veins in hemelytral membrane usually reticulate; spiracles usually located laterally, just
below the connexival margin; African, Oriental (Figures 2.19C, 2.28C) ...Aeschrocorini
43’ Veins in hemelytral membrane usually subparallel; spiracles not located distinctly laterad,
usually remote from connexival margin ........................................................................... 44
44(43) Tarsi either two-segmented or appearing to be two-segmented (distal two segments nearly
fused); Madagascar ........................................................................................................... 45
44’ Tarsi distinctly three-segmented ....................................................................................... 46
45(44) Smaller, usually less than 15 mm in length; second antennal segment quite small, antennae
appearing to be four-segmented (Figure 2.31A) ................................................Opsitomini
45’ Larger, usually greater than 15 mm in length; antennae five-segmented (Figure 2.30J) ...
...............................................................................................................................Nealeriini
46(44) Head large and wide, nearly quadrangular in front of eyes; humeri of pronotum prominent,
spinose or lobate; Madagascar (Figure 2.32H) ................................................Triplatygini
46’ Head of different shape; humeri of pronotum usually rounded, never greatly spinose or
lobate (occasionally with a short, acute spine) .................................................................. 47
47(46) Lateral margins of head, pronotum, and bases of coria sharply edged, at least somewhat
laminate; general shape more ovoid .................................................................................. 48
47’ Lateral margins of head, pronotum, and bases of coria less sharply edged, not laminate;
general shape variable but usually more slender, parallel-sided ....................................... 49
48(47) Size generally larger, body somewhat more robust; often with a few small teeth on infe-
rior surface of front femur; tibiae not finely denticulate; Africa, south Palearctic, Oriental
region, Australia (Figures 2.22F-H; 2.30I) ...........................................................Myrocheini
48’ Size generally smaller, body more flattened; front femora unarmed; tibiae finely denticu-
late, rarely spinose; widespread (Figures 2.24C, D; 2.32B) ...................................Sciocorini
49(47) Australia (Gross’s Menestheus group) ..............................................................Aeptini (part)
49’ Africa, India, Oriental region ............................................................................................. 50
50(49) Tendency for apices of juga, humeral angles, apices of femora, and last abdominal con-
nexiva to be produced, spinose, or at least angulate; Africa (Figures 2.21D, E; 2.29K) .......
..............................................................................................................................Diploxyini
50’ Not with above set of characters; juga may be produced beyond apex of tylus, but not spi-
nose.................................................................................................................................... 51
51(50) Smaller, more obovate; ostiolar rugae quite reduced; Africa, Madagascar (Figures 2.12B;
2.28B) ..............................................................................................................Aeptini (part)
51’ Longer, more slender, African species often parallel sided; ostiolar rugae distinct, medium
in length; Africa, India, Oriental region (Figures 2.13C, 2.32C) ........................Sephelini