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Key to species of Nigeriella

(Life: Kingdom: Metazoa (animals); Phylum: Arthropoda; Class: Hexapoda; Order: Hymenoptera;  Superfamily: Chalcidoidea; Family: Agaonidae)

Fig wasp keysAgaonidae keys

FEMALES


a

 

 

1A

Antennal flagellum with long, flexible sensilla, and a few placoid sensilla; mandible as in fig a, ex F. abutilifolia ...Nigeriella  fusciceps Wiebes

a

 

 

1B

Antennal flagellum with placoid sensilla (attached for whole length to antennal segment) (fig. a) ...2


a

 

 

2A

Mandible with nineteen ventral ridges, the appendage with ca. 26 lamellae that distally become distinctly denticulate (fig a), ex F. pseudomangifera ...Nigeriella letouzeyi Wiebes

a

b

c

2B

Mandible with four to eight ventral ridges, the appendage with two rows of 10 - 20 teeth (figs a, b & c) ...3


a

b

c

3A

Scape with produced, but bluntly convex ventral edge with small tooth at the base (fig. a) ; mandibular appendage narrow, 6X longer than wide (figs. b); postmarginal vein 1.7X longer than the stigmal vein; pronotum with deep, V-shaped posterior invagination extending to anterior edge (fig. c), F. populifolia  ...Nigeriella scindura van Noort

a

b

 

3B

Scape with prominent, sharp ventral projection; mandibular appendage broader, 2.5-3.3X longer than wide (figs a & b); postmarginal vein at most 1.5X length of stigmal vein; pronotum either entire or with weak posterior invagination not extending to anterior edge ...4


a

 

 

4A

Mandibular appendage 2.5X longer than wide, with eleven teeth on each edge (fig a); postmarginal vein subequal in length to the stigmal vein; pronotum with medial V-shaped posterior invagination extending to anterior margin as suture, ex F. rubra ...Nigeriella avicola Wiebes

a

 

 

4B

Mandibular appendage 3.3X longer than wide, with seventeen teeth on each edge (fig a); postmarginal vein much longer (1.5X) than the stigmal vein; pronotum entire, shallowly concave on posterior margin, ex F. tettensis ...Nigeriella excavata Compton


MALES


1A

Head with dorsal prominences next to the antennal toruli, ex F. abutilifolia ...Nigeriella fusciceps Wiebes

1B

Head smooth and flat adjacent to antennal toruli ...2

2A

Antennae short, hardly projecting over clypeal margin, not elbowed, scape reduced and not visible; head dorso-ventrally flattened, wedge-shaped in lateral view; fore femur large, robust, ex F. populifolia ...Nigeriella scindura van Noort

2B

Antennae elonagte, projecting well over clypeal margin, elbowed, scape large and visible; head not flattened, box-shaped in lateral view; fore femur not enlarged ...3

3A

Strong suture connecting the eyes across the posterior of the head. Antenna with one funicular segment, ex F. tettensis ...Nigeriella excavata Compton

3B

Posterior of head smooth. Antenna with 2 or 3 funicular segments ...4


4A

Antenna with two funicular segments, ex F. pseudomangifera  ...Nigeriella letouzeyi Wiebes

4B

Antenna with three funicular segments, ex F. rubra  ...Nigeriella avicola Wiebes


Web authors Simon van Noort (Iziko South African Museum)

and Jean-Yves Rasplus (INRA, France)

 

Citation: van Noort, S. & Rasplus, JY. 2021. Figweb: figs and fig wasps of the world. URL: www.figweb.org(Accessed on <day-month-year>).

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