Synergus dawnus Lobato-Vila and Pujade-Villar, 2020

Lobato-Vila, Irene, Caicedo, Guadalupe, Rodríguez, Pedro A. & Pujade-Villar, Juli, 2020, The inquiline oak gall wasp (Hymenoptera: Cynipidae) fauna from Colombia: new data and species, The Canadian Entomologist 152 (2), pp. 131-144 : 141

Key to Synergus from Colombia

1. Body length more than 5 mm. Flagellomere 1 almost 1.5 times as long as flagellomere 2 ( Fig. 28 ). Post-ocellar distance as long as ocellar-ocular distance ( Fig. 28 ). Malar space somewhat more than 0.7 times as long as height of compound eye ( Fig. 27 ). Transfacial line 1.4 times as long as height of compound eye ( Fig. 27 ). Radial cell short, about

2.1 times as long as wide, with the end of R1 vein curved downwards ( Fig. 29 ). Areolet elongate ( Fig. 29 ). Female antennae with 15 flagellomeres ( Figs. 25, 28 ) (males

unknown) .......................................................................................... Synergus undescribed species – Body length less than 4 mm. Flagellomere 1 about as long as flagellomere 2 or just slightly longer, at least in females. Post-ocellar distance longer than ocellar-ocular distance. Malar space 0.6 or less times as long as height of compound eye. Transfacial line about as long as height of compound eye. Radial cell 2.7 or more times longer than wide, with the end of R1 vein not curved downwards, and areolet small or large, but never elongate ( Figs. 1–2 , 4–5 , 12 , 17–18 , 20–22 ). Female antennae with 14 flagellomeres, 15 flagellomeres in males ................................................................................................................ 2 2. Radial cell usually completely open, sometimes from partially to ambiguously closed, and about 3.5 times as long as wide ( Figs. 20–22 ) (longer in males). Metasoma with a small posterodorsal patch of micropunctures sometimes somewhat laterally extended .............. 3 – Radial cell always closed, whether ambiguously or not, and less than 3.0 times as long as wide ( Figs. 1–2 , 4–5 , 12 ). Metasoma with a more or less extended posterior band of micropunctures (like Fig. 15 ) ................................................................................................................ 4 3. Metasoma clearly dorsodistally incised; radial cell open ( Fig. 20 ) or partially closed

(R1 projected, Fig. 21 ) .......................................................................................................................... ................................ Synergus pedroi Pujade-Villar, Lobato-Vila and Fernández-Garzón, 2017 – Metasoma from not to very slightly dorsodistally incised ( Figs. 23, 24 ); radial cell ambiguously closed (R1 and Rs projected, Fig. 22 ) ........................................................................ .......................................................................................... undescribed species near Synergus pedroi 4. Malar space 0.4 times as long as height of compound eye. Frons weakly wrinkled and punctate. Areolet very small, sometimes absent ( Figs. 1–2 ). Flagellomere 1 about 4.0 times as long as wide ( Fig. 1 ). Flagellomere 1 of males from moderately to strongly expanded apically ( Fig. 3 ). Posterior third of metasoma with a band of minute micropunctures.

Basal half of metacoxae, black ( Figs. 1–2 ). Antennae and wing veins, dark brown

( Figs. 1–2 ) ................................................................ Synergus colombianus Nieves-Aldrey, 2005 – Malar space about 0.6 times as long as height of compound eye ( Fig. 7 ). Frons coriaceous and punctate, rarely with a few very weak wrinkles ( Figs. 7–8 ). Areolet visible, however, it is not well delimited by distinct veins ( Fig. 12 ). Flagellomere 1 about 5.0 times as long as wide ( Fig. 9 ). Flagellomere 1 of males slightly expanded apically and basally ( Fig. 6 ).

Metasoma with an incomplete band of minute micropunctures occupying at most 1/4 of the metasoma ( Fig. 15 ) (about 1/ 3 in males). Metacoxae yellow, rarely with a very small dark spot ( Figs. 4–5 ). Antennae and wing veins, from yellow to dark yellow or testaceous ( Figs. 4–5 ) .............................. Synergus dawnus Lobato-Vila and Pujade-Villar new species

Figures

Figs. 25–29. Synergus undescribed species (female). 25, Habitus; 26, dorsal view; 27, head in frontal view; 28, head in dorsal view and antennae; 29, radial cell.

Figs. 1–3. Synergus colombianus (new material from Colombia). 1, Female habitus; 2, male habitus; 3, first male flagellomeres.

Figs. 4–6. Synergus dawnus. 4, Female habitus; 5, male habitus; 6, first male flagellomeres.

Figs. 7–16. Synergus dawnus. 7, Head in anterior view; 8, head in dorsal view; 9, female antenna; 10, tarsal claw; 11, propodeum; 12, radial cell; 13, mesosoma in lateral view; 14, mesosoma in dorsal view; 15, metasoma in lateral view; 16, metasoma in dorsal view.

Figs. 17–19. Synergus pedroi (paratypes deposited in UB). 17, Female habitus; 18, male habitus; 19, first male flagellomeres.

Figs. 20–21. Radial cell variability of Synergus pedroi. 20, Radial cell open; 21, radial cell partially closed.

Figs. 22–24. Morphological variations within Synergus pedroi (specimens from La Florida). 22, Radial cell; 23, metasoma lateral view; 24, metasoma dorsal view.