Tetrastichus heeringi Delucchi (Eulophidae)

Baur, Hannes, 2001, The Hymenoptera (Chalcidoidea, Ichneumonoidea, Platygastroidea) described by Vittorio Delucchi: an annotated catalogue, Journal of Natural History 35 (1), pp. 55-125 : 114-115

Tetrastichus heeringi Delucchi (Eulophidae)

Tetrastichus heeringi Delucchi, 1954b: 99 . Lectotype m, Germany: Oberbayern , Grafrath, here designated (VD [examined]).

Material. LECTOTYPE m (mp, right hind wing lacking) labelled`6.; Tetrastichus Heeringi [sic] n. sp. V. Delucchi det.; ex Agrilus viridis . V. Delucchi leg.’.

PARALECTOTYPES, VD: 5 mm, 5 ll, labelled and mounted as follows: 1 m (mp)`5; Tetrastichus heeringi n. sp. V. Delucchi det.; ex Agrilus viridis V. Delucchi leg.; TYPE [red]’, 1 l(mp)`14; TETRASTICHUS heeringi n. V. Delucchi det.; ex Agrilus viridis V. Delucchi leg.; TYPE [red]’, 1 m (mp)`7.’, 1 m (mp)`8’, 2 ll(mp)`9.’, and four slides (sc) of at least 2 mm, 2 ll, labelled as follows: one slide`23; Tetrastichus m lheeringi n. sp. antenne e lamina subgen. leg. Heering, Hellm. no. 4. Deutsch.’ with female and male antennae and female hypopygium, one slide`24; m Tetrastichus heeringi DIS addome ... [illegible] 4 [circled] no.’ with fore wings of a female, stigma of left fore wing illustrated (1954b: 100, ®gure 2g), one slide`25; m lTetrastichus heeringi n. sp. DIS no 4 [circled] genitalia e antenne’ with female and male antennae and female ovipositor, and one slide`26; lTetrastichus heeringi DIS addome ... [illegible] no 4 [circled]’ with fore wings of a male.

Remarks. Delucchi described both sexes and stated` Type in meiner Sammlung.’ but did not specify the number of specimens he had.

The type series is a mixed one and includes three diOEerent species. T. heeringi as currently understood ( Graham, 1991) are only the lectotype, paralectotyp e females`7.’,`8’, the male`TYPE’, and probably the slide-mounted specimens. The female`TYPE’ belongs to what is now known as Tetrastichus agrilocidus Graham, 1991 [holotype examined], the two males `9.’ are Baryscapus sp. I think, it is reasonable to follow GrahamÐactually the ®rst reviser Ð in the interpretation of heeringi and not to select the female`TYPE’ as lectotype. It is also in accordance with Delucchi’s description, where he stated (1954b: 100)`Abdomen etwas laÈnger als der Thorax, ca. zweimal laÈnger als breit...’. This agrees well with the lectotype but not with the female`TYPE’ which has the gaster about 1.6 times as long as the mesosoma and 2.4 times as long as broad. Most probably the ®gures of female and male antenna (1954b: 100, ®gures 2e, 2f, 2h) originate from the slide-mounted parts though none of them ®t exactly the position given by Delucchi (see also Tetrastichus misellus Delucchi ).

A female (cp) labelled` Allemagne Ringingen 13.VII.51 Wellenstein; Ex Agrilus viridis’ in FerrieÁre’ s handwriting stood under this name in Delucchi’s collection, too. Since he mentioned only material from Heering, it is not considered as part of the type series. It is also a specimen of T. agrilocidus . In two small boxes a further 238 parasitoids (mp; six specimens subsequently transferred to the BMNH) reared by Heering from Agrilus viridis (Linnaeus) ( Coleoptera : Buprestidae ) in Grafrath ( Heering, 1956: 85 ±87) could be located. The specimens were only provided with numbers`1’ ±`69’ and`201’±`220’. A stamp`Helmut Heering Grafrath/Amper Wald- Villa 88’ on the outside of the boxes clearly revealed the origin of that material. One could still see the holes where Delucchi took out the specimens which he used for his paper (1954b). The vials in which the material was stored before mounting could be traced, too, containing a printed label with the same data as the stamp mentioned. Unfortunately, further information on host, date, etc., written with a pencil, was illegible, since the liquid is now viscous and the labels in very bad condition. All that can be said with certainty is that parasitoids with the same numbers emerged from one and the same host specimen. The material was subsequently identi®ed by myself and revealed a number of T. heeringi as well as T. agrilocidus , Baryscapus agrilorum (Ratzeburg) , B.? hylesini Graham, Quadrastichus misellus (Delucchi) , and one male of Eurytoma sp.

Status. Tetrastichus heeringi Delucchi.