Key to species of genus Centistidea Rohwer, 1914 from Brazil

1. Notauli extending to two-thirds of mesoscutum and meeting each other posteriorly; median line of face almost carinate ............................................................................... C. brasiliensis (Brues, 1912)

– Notauli extending, at most, to half of mesoscutum and not meeting posteriorly (e.g., Fig. 3e); face not carinate medially (e.g., Fig. 3c)................................................................................................... 2

2. Scutellar sulcus distinctly crenulate (e.g., Fig. 3e) ............................................................................ 3

– Scutellar sulcus smooth (e.g., Fig. 5e)............................................................................................... 5

3. Propodeum with carinulate-areolate elements (Fig. 6b); head less broad, 1.7 × as wide as long in dorsal view (Fig. 6e); mesosoma black at least dorso-laterally (Fig. 6b)........ C. vertus (Papp, 2013)

– Propodeum without carinulate-areolate elements (e.g., Fig. 4j); head broader, at least 1.8× as wide as long in dorsal view (e.g., Fig. 4b); mesosoma yellow to brown (e.g., Fig. 4e)............................. 4

4. Propodeum 1.8× as wide as its mid length (Fig. 4j); face transverse, 2.0× as wide as high (Fig. 4c); T3 weakly longitudinally striate (Fig. 4k) ........................................................................................... ............................................................................................................................. C. latisulca sp. nov.

– Propodeum 1.4 × as wide as its mid length (Fig. 3h); face 1.4 × as wide as high (Fig. 3c); T3 nearly polished (Fig. 3i)............................................................................... C. insularis (Muesebeck, 1937)

5. T1 strongly constricted anteriorly (e.g., Fig. 5k); T2 reduced to very narrow longitudinal strip basally while abruptly widened apically (e.g., Fig. 5l) .................................................................................. 6

– T1 indistinctly constricted anteriorly (e.g., Fig. 1i); T2 gradually widening from basal to apical part (e.g., Fig. 1l) ...................................................................................................................................... 7

6. Fore wing vein r almost completely absent; occiput striate; scutellar hind depressions nearly touching each other............................................................................................ C. striata Penteado-Dias, 1999

– Fore wing vein r distinctly present (Fig. 5g); occiput at most weakly rugulose (Fig. 5b); scutellar hind depressions distinctly separated, interspace at least half length of minor axis of a depression (Fig. 5h) ................................................................................................................. C. radialis sp. nov.

7. Propodeum with areola (Fig. 1e, h); 1-CU1 of fore wing slightly longer than 2-CU1 (1.1×) (Fig. 1g); ovipositor sheath short, about half length of hind basitarsus (Fig. 1g, k)............ C. areolaris sp. nov.

– Propodeum without areola (Fig. 2i); 1-CU1 of fore wing distinctly shorter than 2-CU1 (0.7×) (Fig. 2g); ovipositor sheath 1.5× as long as hind basitarsus (Fig. 2a, j) ............................................. .................................................................................................................. C. breviantennalis sp. nov.