Dinapsis Waterston, 1922

van Noort, Simon, Shaw, Scott Richard & Copeland, Robert S., 2022, Revision of the endemic African genus Dinapsis (Dinapsini, Megalyridae, Hymenoptera) with description of seven new species, ZooKeys 1112, pp. 27-122 : 27

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scientific name

Dinapsis Waterston


Dinapsis Waterston

Type species.

Dinapsis turneri Waterston, 1922, by original designation (South Africa, Western Cape, Ceres).


Dinapsis species have a distinctive forewing venation pattern, with vein Rs curving abruptly to the anterior wing margin to form a short, abruptly truncate marginal cell (cell 2R1) (Fig. 2A, B View Figure 2 ) ( Waterston 1922; Hedqvist 1967; Shaw 1990b). They also have a distinctive pattern of six longitudinal, nearly parallel, propodeal carinae (Figs 6E View Figure 6 , 25D View Figure 25 ) ( Waterston 1922; Hedqvist 1967; Shaw 1990b). However, the patterns and degree of development of the propodeal transverse carinae vary among species.


The genus Dinapsis can be keyed out from the two other megalyrid genera present in Africa using the above generic key that is also available as an online interactive Lucid key on WaspWeb (https://www.waspweb.org) ( van Noort 2022).


Unknown. Specimens are most commonly collected in Malaise traps, and less frequently in yellow pan traps, via tree canopy fogging, or through leaf litter sifting. To our knowledge only a single living specimen of this genus has ever been photographed (Fig. 1 View Figure 1 ).

Species richness.

The genus Dinapsis was previously known from ten Madagascan and two continental African species ( Waterston 1922; Hedqvist 1967; Shaw and van Noort 2009; Madl 2010; Mita and Shaw 2020). The current revision has elevated species richness of the genus to 19 named species:

D. albicauda Mita & Shaw, 2020 (Madagascar)

D. albicoxa Hedqvist, 1967 (Madagascar)

D. bicolor van Noort & Shaw, sp. nov. (South Africa)

D. centralis Shaw & van Noort, 2009 (Central African Republic, Cameroon, Kenya, Uganda)

D. cresta Mita & Shaw, 2020 (Madagascar)

D. gamka van Noort & Shaw, sp. nov. (South Africa)

D. hirtipes Hedqvist, 1967 (Madagascar)

D. igneus van Noort & Shaw, sp. nov. (Mauritius)

D. luteus Mita & Shaw, 2020 (Madagascar)

D. nubilis Hedqvist, 1967 (Madagascar)

D. oculohirta Hedqvist, 1967 (Madagascar)

D. planifrons Mita & Shaw, 2020 (Madagascar)

D. scriptus Mita & Shaw, 2020 (Madagascar)

D. seyrigi Hedqvist, 1967 (Madagascar)

D. spinitibia van Noort & Shaw, sp. nov. (Tanzania)

D. taita van Noort & Shaw, sp. nov. (Burundi, Kenya)

D. tricolor Shaw & van Noort, sp. nov. (Kenya, South Africa)

D. turneri Waterston, 1922 (South Africa)

D. zulu Shaw & van Noort, sp. nov. (South Africa)


Burundi, Cameroon, Central African Republic, Kenya, Madagascar, Mauritius, South Africa, Tanzania, Uganda (Figs 43 View Figure 43 , 44 View Figure 44 ). The currently recorded distribution is a highly biased artefact due to under-sampling in the Afrotropical region (see discussion).


Of the ten Dinapsis samples submitted to BOLD (representing seven species: D. bicolor , D. gamka , D. igneus , D. taita , D. tricolor , D. turneri , D. zulu ) DNA was successfully extracted from seven specimens represented by five species (Table 1 View Table 1 ).