Trichogrammatoidea annulata De Santis, 1972

Querino, R. B. & Zucchi, R. A., 2004, Redescription of Trichogrammatoidea annulata De Santis (Hymenoptera: Trichogrammatidae), Zootaxa 677, pp. 1-7 : 2-3

Trichogrammatoidea annulata De Santis, 1972

( Figs.1 –4; Table 1)

Trichogrammatoidea annulata De Santis 1972: 122 ; Pinto 1997a: 594; De Santis 1981: 31; Hohmann & Lovato 2003: 351; Maceda et al. 2003: 27; Noyes 2004.

DIAGNOSIS — This species is distinguished by the apically divergent volsellae which describe an inverted V. The others species recorded in Brazil, T. bennetti , T. nana and T. robusta are somewhat similar to T. annulata . In T. bennetti the volsellae are far below the apex of the parameres and the genital capsule lacks a broad apex. In T. nana the intervolsellar process is distinct and the apex of the volsellae are far below the apex of the parameres. In T. robusta , the genital capsule is tapered at its base, its apex is broad, and the volsellae are very near the level of parameres.

REDESCRIPTION — Male: Body size — from 0.56 to 0.66 mm. Antenna — the antennal structure consists of one anellus, two funicular segments and three claval segments ( Fig. 1 B); all funicular and claval segments are distinct. There are various sensilla on the male antenna: Flagelliform setae (FS) are elongate and distributed on the flagellar segments, length of the longest flagelliform seta/width of the flagellum (2.59 ± 0.14), length of the longest flagelliform seta/hind tibial width (3.93 ± 0.18); a basiconic peg sensilla (BPS) at five positions along the flagellum, a maximum of two sensilla at positions 2– 3; BPS formula 1­2­2­1­1; length to width of flagellum (5.43 ± 0.30); length of the flagellum to the hind tibial width (8.24 ± 0,30); length of the flagellum to the hind tibial length (1.15 ± 0.04). Mesoscutum and Mesoscutellum — an anterior and posterior pair of setae on the midlobe of the mesoscutum and the mesoscutellum; the mesoscutellar setae of similar length; the mesoscutellum with the anterior setae (0.25 ± 0.02) the length of the posterior pair). Forewing — broad (fig. 1C), width to length ratio (0.50 ± 0.01); distinct setal lines stop near stigmal vein; longest marginal setae ca. 0.44 times hind tibial length; length of longest marginal setae to hind tibial width (3.17 ± 0.32); infuscation posterior of marginal vein (fig. 1C). Hind wing — the middle track is complete to the wing apex (fig. 1D); the anterior and posterior tracks entirely absent. Genital capsule — genital capsule longer than wide (figs. 1 F,G; 3); width to length of the genital capsule (0.33 0.02); volsellae divergent, closer to ach other at their base than their apex, forming an inverted V (figs. 3E,G); ventral ridge long xtending beyond the mid­point of the genital capsule (fig. 3D); ventral processes near of the base do intervolsellar process (figs. 3E,G); intervolsellar process minute or absent (figs. 3 D,E,F,G). Apical distance/length of the genital capsule (0.15 ± 0.01); apical width/width of the genital capsule (0.57 ± 0.03); length of ventral ridge/ basal distance (0.31 ± 0.36); basal distance/length of the genital capsule (0.85 ± 0.01); aedeagus length/hind tibial length (0.56 ± 0.02); aedeagus apodemes length/aedeagus length (0.57 ± 0.03). Quantitative data taken from seven males from Londrina (Table 1).

Female: antenna with one distinct anellus (figs. 1 A, 2A), second anellus very small and appressed to first funicular segment (fig. 2A), difficult to see in slide material; two funicular segments and a single claval segment. Four placoid sensilla on claval segment.

TYPE MATERIAL — Holotype female. BRAZIL. SÃO PAULO: Campinas, May/ 1971, ex Alabama argillacea eggs, Rossetto coll. ( MUSEO DE LA PLATA) (examined). Allotype, same data of holotype (examined). Paratypes: 5 males and 3 females ( MUSEO DE LA PLATA); 1 male and 1 female ( ESALQ); same data of holotype (examined).

MATERIAL EXAMINED — BRASIL. Paraná: Cambé, 18­viii­1999, ex Stenoma catenifer eggs, Celso Hohmann col., 3 males ( ESALQ); Arapongas, 05­ii­2001, ex Stenoma catenifer eggs, Celso Hohmann col., 5 males ( ESALQ); Londrina, xii/2001, ex Hypolaca andremona eggs, Celso Hohmann col., 7 males ( ESALQ).

VARIATION — Seven males from Londrina differ from those of Cambé and Arapongas by having a shorter ventral ridge.

GEOGRAPHIC DISTRIBUTION — Argentina ( De Santis 1981); Brazil, state of São Paulo ( De Santis 1972) and state of Paraná ( Hohmann & Lovato 2003).

HOST — Alabama argillacea ( De Santis 1972); Stenoma catenifer and Hypolaca andremona ( Hohmann & Lovato 2003); Helicoverpa gelotopoeon ( De Santis 1981) .

Figures

FIGURE 1. Trichogrammatoidea annulata. A – B. Antenna: A. Female, B. Male. C. Fore wing. D. Hind wing. E. Marginal vein of forewing. F – G. Male genital capsule: F. Ventral view, G. Dorsal view. H. Female genital capsule.