Grotea delicator (Thunberg, 1822)

Lima, Alessandro Rodrigues & Kumagai, Alice Fumi, 2024, Two new species of Grotea Cresson (Hymenoptera, Ichneumonidae, Labeninae) from Brazil, Zootaxa 5403 (1), pp. 104-114 : 108-109

Grotea delicator (Thunberg, 1822)

( Figs 3A–D )

Ichneumon delicator Thunberg, 1822 , Mem. Acad. Imp, Sci. St. Petersbourg, 8: 259; 1824, Ibid, 9: 307, sex not given. Type: sex? (abdomen missing), (French West Indies: Saint) Barthelemy Island (Uppsala).

Atractodes lineatus Brullè, 1846 , In Lepeletier: Histoire Naturelle des Insectes, Hymenopteres, 4: 167. 9. Lectotype: Q, “ Guiana ” (Paris).

Grotea lineata ; Krieger, 1903, Z. syst. Hymen. Dim., 3: 290.

Labenidea delicator ; Roman, 1912, Zool. Bidrag Uppsala, l: 249.

Diagnosis

Head in dorsal view with gena behind eyes slightly concave; gena close to the junction of occipital and hypostomal carinae projected into a spatulate or ellipsoid tooth ( Fig. 3B ). Propodeum with anterior transverse carina indented centrally, not forming a smooth arc from side to side. Distal hamuli on vein RA forming a basal cluster with the first 2 hamuli.

Comments. The specimens examined have hind wing basal hamuli on tubular vein C, with 6 hamuli in females, and only 3 in males; for the distal hamuli, there are a total of 6–7 hamuli in females and only 4 in males, unevenly distributed in both sexes, forming a basal cluster with the first 2 hamuli; most females also have a distinct apical cluster ( Fig. 3D ).

Distribution. Argentina, Brazil (Minas Gerais, Rio de Janeiro and Santa Catarina), Guyana, Trinidad and Tobago, and Suriname.

Material examined. [6 ♀, 2 ♂] Brazil, Minas Gerais: Belo Horizonte, 19°52’30”S; 43°58’20”W, 842m, 27.viii‒ 02.ix.1991, Malaise, A.F.Kumagai leg. [1 ♀, CCT-UFMG-IHY-2300000 ] ; Betim, Casa Amarela , 19°59’55.5”S; 44°13’13.13”W, 826m, 10‒24.viii.2021, Malaise, A.R.Lima leg. [1 ♀, CCT-UFMG-IHY-2101717 ] ; Monte Azul, Serra de Montevidéu - Formosa, Trilha para o Pico da Formosa , 15°13’58.3”S; 42°49’03.9”W, 1439m, 29.xi‒ 5.xii.2015, Malaise, L.N.Perillo leg. [1 ♂, CCT-UFMG-IHY-2100074 ] ; Porteirinha, Parque Estadual de Serra Nova , Trilha subida na vertente da Cachoeira do Serrado , 15°43’02.8”S; 43°50’07.1”W, 1037m, 7‒13.xii.2015, Malaise, L.N.Perillo leg. [1 ♂, CCT-UFMG-IHY-2100027 ] ; Santo Antônio do Itambé, Parque Estadual do Pico do Itambé , Trilha para Cachoeira do Rio Vermelho , 18°24’07.6”S; 43°18’03.3”W, 1139m, 8‒14.i.2015, Malaise, L.N.Perillo leg. [2 ♀, CCT-UFMG-IHY-2100046 , CCT-UFMG-IHY-2100047 ] ; São Gonçalo do Rio Abaixo, Estação Ambiental de Peti - CEMIG, 19°53’14”S; 43°22’06”W, 630m‒808m, 31.i.2003, Malaise, A.F.Kumagai leg. [1 ♀, CCT-UFMG-IHY-2300001 ] ; idem, 07.ii.2003 [1 ♀, CCT-UFMG-IHY-2300002 ].

Figures

FIGURE 3. Grotea delicator. A. habitus in lateral view; B. head in postero-ventrolateral view, detail of projection of gena (close to the junction of occipital and hypostomal carinae); C. prothorax in dorsal view, detail on the anterior margin impressed and strongly reflexed; D. hind wing, detail of the distribution of distal hamuli on vein RA. Scale bar in mm.