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Key to the Families of Proctotrupoidea

 

& Platygastroidea

 

(Derived primarily from Gauld & Bolton 1988 by E. F. Legner)

 

(Email Contacts)

 

 

[This key is in a form commonly used in North America.  If the statement

 is true, proceed to the designated couplet, whereas if it is false, go to "b"

 portion of the couplet].

 

[Please refer to <Guide> and <Taxnames> for more illustrations]

 

 

Proctotrupoidea <Overview>  and  Platygastroidea   <Overview>

 

2

1a.  Antennal sockets contiguous with dorsal margin of clypeus or separated from clypeus by less than diameter of socket

 

4

1b.  Antennal sockets separated from dorsal margin of clypeus by more than diameter of socket

 

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2a.  Fore wing with well developed venation, marginal cell closed and a distinct pterostigma present; antenna with 13 segments .......... Vanhorniidae   <Habits>; <Adults> & <Juveniles>

 

3

2b.  Fore wing with very reduced venation, without a closed marginal cell or a distinct pterostigma; antenna with 12-14 or less segments

 

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3a.  Fore wing without stigmal or postmarginal veins, often veinless; antenna with 10 or fewer segments; males with antennal segment 4 or 3 specialized ......... Platygasteridae   [Now in Platygastroidea]   <Habits>; <Adults> & <Juveniles>

 

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3b.  Fore wing with stigmal and usually also postmarginal veins present; antenna usually with 11-12 segments, rarely with 10; males with antennal segment 5 specialized ........ Scelionidae  [Now in Platygastroidea] <Habits>; <Adults> & <Juveniles>

 

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4a.  Scape distinctly elongated, at least 2.5X as long as wide; pterostigma absent; antennal shelf usually present  ........... Diapriidae   <Habits>; <Adults> & <Juveniles>

 

5

4b.  Scape at most 2.2X as long as wide, usually less; pterostigma present; antennal shelf absent

 

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5a.  Antenna with 15 segments and one ring-like segment; fore wing with a distinct triangular cell 1M; claws comb-like .......... Heloridae   <Habits>; <Adults> & <Juveniles>

 

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5b.  Antenna with 13 segments; fore wing without a triangular cell 1M; claws not comb-like.......... Proctotrupidae   [Formerly Serphidae]   <Habits>; <Adults> & <Juveniles>

 

 

 

ADDITIONAL FAMILIES NOT REPRESENTED IN THIS KEY:

 

    Monomachidae <Habits>; <Adults> & <Juveniles>

          [formerly Monoserphidae <Habits>; <Adults> & <Juveniles>]

    Pelecinidae <Habits>; <Adults> & <Juveniles>

    Peradeniidae <Habits>; <Adults> & <Juveniles>

    Roproniidae <Habits>; <Adults> & <Juveniles>

    Serphidae (= grouped with Proctotrupidae)) <Habits>; <Adults> & <Juveniles>