Scolomus, Townes & Townes, 1950

Araujo, Rodrigo O., Vivallo, Felipe & Santos, Bernardo F., 2018, Discovery of two new Andean species of Scolomus (Townes & Townes), with a key to all known species (Hymenoptera: Ichneumonidae: Metopiinae), Zootaxa 4429 (1), pp. 189-194 : 190-191

Key to the species of Scolomus

1 Mandible stout with small acuminate teeth of the same length. Labrum apex always visible, even with mandibles closed. Wings with a pentagonal areolet, veins 2RS and rs-m touching 3RSa separately. Subtegular ridge produced as a sharp, curved spine. Deep groove between the propodeum and metanotum................................................... 2

- Mandible slender with upper tooth distinctly longer than the lower tooth. Labrum more or less concealed when mandibles closed ( Figs 1 , 3, 5 ). Areolet slightly petiolate, rhombic, with 2RS vein joining rs-m shortly before touching 3RSa ( Figs 2 , 4, 6 ). Subtegular ridge not produced as a sharp spine. Shallow groove between the propodeum and metanotum................ 3

2(1) Propodeum without areola, posterior transverse carina incomplete. Lateral longitudinal carina sharper and more distinct near propodeal spiracle............................................................. S. magellanicus Walkley 1962

- Propodeum with areola delimited by the lateromedian longitudinal, anterior and posterior transverse carinae. Lateral longitudinal carina faint, indistinct near propodeal spiracle.................................. S. viridis Townes & Townes 1950

3(1) Propodeum with no trace of lateromedian longitudinal carina. Head and mesoscutum with reddish brown marks, fore leg orange brown. Central America............................................ S. talamanca ( Gauld & Sithole 2002)

- Propodeum with lateromedian longitudinal carina discernible. Head and mesoscutum without reddish brown marks, fore leg brown or green...................................................................................... 4

4(3) Body mostly blackish, without extensive green areas. Female supra-clypeal area with simple, uniformly distributed setae. Propodeum with lateral longitudinal carina incomplete. Holarctic........................... S. borealis ( Townes 1971)

- Body with extensive green areas. Female supra-clypeal area with clusters of seemingly bifurcate setae. Propodeum with lateral longitudinal carina complete. Chile...................................................................... 5

5(4) Clypeus width 3.00× its height ( Fig. 1 ). Distance between eye and lateral ocellus 1.50× diameter of lateral ocellus. Areolet 0.80× as wide as long. Hypopygium 1.55× as long as wide, in lateral view. Ovipositor 12.50× as long as basal width. Head, mesoscutum, postscutellum and pronotum entirely brownish yellow............................. S. clypeatus sp. nov.

- Clypeus width 1.55×–2.30× its height ( Fig. 3, 5 ). Distance between eye and lateral ocellus 0.90×–1.00× diameter of lateral ocellus. Areolet 1.00× as wide as long. Hypopygium 1.90× as long as wide, in lateral view. Ovipositor 5.30× as long as basal width. Head and pronotum greenish, mesoscutum yellow with dark brown spots on lateral lobes and around scutellum......................................................................................... S. maculatus sp. nov.

Figures

FIGURES 1–2. Scolomus clypeatus new species. 1: holotype female, head (frontal view); 2: holotype female, habitus. Scale bars (mm): Figs 1 = 0.4; Figs 2 = 2.0.

FIGURES 3–6. Scolomus maculatus new species. Figs 3: holotype female, head (frontal view); 4: holotype female, habitus; Figs 5: paratype male, head (frontal view); 6: paratype male, habitus. Scale bars (mm): Figs 3 and 5 = 0.4; Figs 4 and 6 = 2.0.