Chrysis diversa Dahlbom, 1845

Rosa, Paolo & Vardal, Hege, 2015, An annotated catalogue of the types of Chrysididae (Hymenoptera) at the Swedish Museum of Natural History, Stockholm, with brief historical notes, ZooKeys 495, pp. 79-132 : 86-87

Chrysis diversa Dahlbom, 1845 Plate 5

Chrysis diversa : Dahlbom 1845: 13.

Type locality.

Egypt.

Lectotype

(here designated) ♀: [Egypt] [Hedb.] [47 86] <red label> [Riksmuseum Stockholm] <green label> <red label> [Paralectotypus Chrysis diversa ♀ Dahlbom 1845 des. by Bohart P. Rosa vidit 2010] <red label> [ Chrysis palliditarsis Spinola P. Rosa det. 2010] [NHRS-HEVA000001073] (Plate 5).

Paralectotype 1 ♀.

[Egypt] [Hedb.] [48 86] <red label> [Riksmuseum Stockholm] <green label> <red label> [Paralectotypus Chrysis diversa ♀ Dahlbom 1845 des. by Bohart P. Rosa vidit 2010] <red label> [ Chrysis palliditarsis Spinola P. Rosa det. 2010] [NHRS-HEVA000001074].

Remarks.

Dahlbom (1845: 13) described Chrysis diversa without any information on the type-series. Later Dahlbom (1854: 226) listed that he examined only two specimens: " Habitat in Aegypto, a D. Hedenborg detecta. Specimina duo e Museo R. Acad. Scient. Stockholm. communicavit D. Boheman." In the collection three female specimens are found. They bear red labels with the numbers 47, 48, 49 and they were all collected by Hedenborg in Egypt. Two specimens are equal and belong to the species Chrysis palliditarsis Spinola, 1838; whereas the third specimen, although with similar colouration and habitus, is different and belongs to the species Chrysis viridissima Klug, 1845. The latter specimen is not part of the original type-series and cannot be considered as syntype. The other two specimens, found in the collection with catalogue numbers 47 (NHRS-HEVA000001073) and 48 (NHRS-HEVA000001074) can be considered as syntypes. Bohart (in Kimsey and Bohart 1991: 446) designated the lectotype of Chrysis diversa and placed it in synonymy with Chrysis palliditarsis . Unfortunately, Bohart selected the specimen not syntypic and not belonging to Chrysis palliditarsis (n° 49), but the specimen belonging to Chrysis viridissima . It bears the labels: [Egypt] [Hedb.] [49 86] <red label> [Riksmuseum Stockholm] <green label> [ Chrysis diversa ♀ Dahlbom Lectotype R.M. Bohart] <red label> [NHRS-HEVA000001131]. This specimen must be excluded from the type-series because the anal margin is quite different from the anal margin of Chrysis diversa as found in the original description: " Abdominis segmenti 3:tii series ante-apicalis e punctis modicis non confluentibus constituta; dentes apicales breves obtusi. Corpus 2 ½ lin. long ". All three specimens share the same shape of the pit row of the third tergite, but only two specimens have apical teeth short and more or less obtuse and their body lenght is "2 ½ lin.". The female of Chrysis viridissima has different anal teeth: the median ones are rounded and the lateral ones are spiniform; moreover it is longer than the other two specimens. More differences are found between the two species (e.g. the length of the malar space (Plate 5B)) but without relation to the original description. According to the ICZN (Art. 74.2) if it is demonstrated that a specimen designated as a lectotype was not a syntype, it loses its lectotype status.

We here designate one of the two female syntypes as the lectotype of Chrysis diversa Dahlbom, 1845 to fix the synonym Chrysis diversa Dahlbom = Chrysis palliditarsis Spinola. If we would consider Bohart’s lectotype designation as valid, then the synonym Chrysis diversa Dahlbom = Chrysis viridissima Dahlbom would generate confusion, since Chrysis diversa has the priority over Chrysis viridissima , which is currently in prevailing use.

Current status.

Chrysis palliditarsis Spinola, 1838 (synonymised by Kimsey and Bohart 1991: 446).