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Key to species of Bacuma (Braconinae)

(Life: Kingdom: Metazoa (animals); Phylum: Arthropoda; Class: Hexapoda; Order: Hymenoptera;  Superfamily: Ichneumonoidea; Family: Braconidae; Subfamily: Braconinae)

ClassificationBraconidae keys


1. Metasomal tergites all black (A); length of 2nd metasomal tergite > 1.25X posterior width (B) ... Bacuma bicolor


Metasomal tergites 1-4 red (a) or ochreous (b), tergites 5 and 6 red or ochreous but black in B. fumipennis; 2nd metasomal tergite variable ... 2
 


2. Mid-basal triangular area of 2nd tergite largely or entirely smooth (A); 2nd metasomal tergite 1.0-1.1 x longer than wide (A); depressed part of frons black, lateral parts orange-red or yellowish-orange (B); metasomal sternites and hypopygium largely piceous; base of hind wing with a large glabrous area (C) ... 3
 

Mid-basal triangular area of 2nd tergite entirely striate (a); 2nd metasomal tergite variable (a); lateral parts of frons often largely or entirely black (b); metasomal sternites and hypopygium variable; base of hind wing usually with a narrow glabrous area adjacent to vein cu-a (c) ... 5
 


3. Basal half of fore wing including most of subbasal cell dark brown (A); occiput broadly black (B); hind wing largely dark brown except for small hyaline areas around basal cell and apex of 1-M (A) ... Bacuma maculiventris
 

Basal half of fore wing including most of subbasal cell hyaline (a); occiput with narrow median black bar (b); hind wing with more extensive pale markings ... 4
 


4. Metasomal tergites ochreous orange-red to red with posteriorly-converging sublateral carinae of 2nd metasomal tergite not conspicuously darker (A); top of head broadly black (B); head, pronotum and mesopleuron without white colouration (C); mesosternum entirely red; hind leg entirely orange-red (C) ... Bacuma darfurensis
 

Metasomal tergites ochreous yellow with posteriorly-converging sublateral carinae of 2nd metasomal tergite dark brown (a); top of head with a narrow black line and whitish anteriorly (b); pronotum, anterior of mesopleuron whitish (c); mesosternum and mesopleuron with dark marks (c); hind leg beyond coxa largely black (c) ... Bacuma kayserae
 


5. Mesosoma and metasomal tergites 5-7 largely black (A), hind femur and tibia, except at their junction, dark brown (A); hind wing largely hyaline with dark brown patches antero-basally and antero-medially (A); sculpture of 2nd metasomal tergite behind triangular area coarse (B); body length 11 mm ... Bacuma fumipennis
 

Mesosoma and metasomal tergites 5-7 red (a), hind femur and tibia red (a); hind wing largely dark brown (b); sculpture of 2nd metasomal tergite behind triangular area fine (b); body length > 18 mm ... 6
 


6. Body ochreous yellow (A); posterior margin of propodeum (anterior of lunule) crenulate (B); frons gradually impressed behind antennal sockets, the part lateral to the depression with same sculpture as impressed part except immediately behind antennal sockets (C) ... Bacuma madiensis
 

Body red (a); posterior margin of propodeum (anterior of lunule) smooth (b); frons more abruptly impressed behind antennal sockets and part lateral to depression markedly more coarsely sculptured (c) ... 7
 


7. Mesonotum entirely red (A, B) ... Bacuma maculipennis & Bacuma rufa
 

Mesonotum largely piceous (a, b) ... Bacuma granulatus & Bacuma whitei
 


Reference

Quicke DLJ, Guy TJ, van Noort S, Broad GR & Butcher BA. 2017. New species of Bacuma Szépligeti (Hymenoptera: Braconidae, Braconinae) from Kenya and West Darfur with a partial key to species. Zootaxa 4263: 43–71. https://doi.org/10.11646/zootaxa.4263.1.2

Credits

Photographs © Simon van Noort (Iziko Museums of South Africa), or Gavin Broad (Natural History Museum, London), or Donald Quicke (Chulalongkorn University), or Travis Guy (University of Florida).


Web author Simon van Noort (Iziko South African Museum)

 

Citation: van Noort, S. 2021. WaspWeb: Hymenoptera of the Afrotropical region. URL: www.waspweb.org (accessed on <day/month/year>).

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