Dissomphalus krombeini Azevedo 1999
Creators: name: Azevedo, C. O.
Publisher: name: Zenodo
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Bethylidae
Dissomphalus
Dissomphalus krombeini

description: Dissomphalus krombeini Azevedo, 1999 (Figs. 20–22)
Dissomphalus krombeini Azevedo 1999b: 52–54.
D. politus Ashmead, 1894: Evans 1969c: 3.
This species was described from Florida (USA), and now it is recorded for the first time from Neotropical region. Material identified as D. politus by Evans (1969c) runs to this species. There is also unpublished data based on material deposited at MCZH from the type locality identified by Evans in 1965 as D. politus, which runs to D. krombeini. This small species is similar to D. gilvipes Evans, 1979, but in D. gilvipes the apical lobe of aedeagus is long, approximately as long as the base, and ventral ramus thin with vertical surface, whereas D. krombeini has the apical lobe of aedeagus about 0.5 X as long as the base, ventral ramus wider with horizontal surface.
The broad range of variations is founded not only among the specimens from different and distant localities, but also within specimens from the same sites, which is not very common in the species of this genus. In this series, there is broad range of variation, mainly in the notauli, in the paramere and ventral ramus of the aedeagus. The median lobe of clypeus is usually tridentate. The notauli are absent or present on the anterior third or half of mesoscutum, well­impressed or ill­defined, sometimes very narrow and inconspicuous, slightly convergent or divergent. Metasomal tergite II with pair of lateral depressions, widely separated each other, subcircular, with small tuft of hair, one of them distinctly longer (Fig. 20). Hypopygium with posterior concave, with small rounded median lobe, or weakly trilobate. Genitalia: paramere with apex narrow, rounded and arched inward, ventral margin excavated and with rounded lobe below the apex (Figs. 21– 22) or with apical half narrower or wider, apex rounded, or slightly blunt, or with small dentiform protuberances or actually dentate, basal half wider or narrower, or slightly projected downward; ventral ramus aedeagus shorter than dorsal body, base very wide, narrowing up to the acute apex, inner margin parallel, outer margin very converging (Fig. 21) or with apex rounded, or very sharpened, or usually truncate and inclined; apical half little wider or with constriction below it; basal half wider or narrower, so that the basal can be distinctly wider or not in relation to the apical half; dorsal body aedeagus with two pairs of apical lobes, outer pair laminar, outer surface convex, apex thin and somewhat rounded, ventral and dorsal margin slightly convex in lateral view, inner pair stout, membranous, short, surface hairy (Fig. 22) or with ventral margin of outer lobe smooth, serrated or with rounded wide teeth.
Material examined. — SAINT VINCENT, West Indian, 1 male, H. H. Smith col. (MCZH). New material: DOMINICAN REPUBLIC, 1 male, Pedernales, 26 km N, Cabo Rojo, Sierra Bahoruco, 540m, VII.1990, L. Masner col. (PMAE); SAINT VINCENT, Majorca, 1 male, summer 1972, Malaise trap (CNCI); DOMINICA, West Indian, Pont Casse 1.7 miles E, 1 male, 10.III.1965, W. W. Wirth col. Bredin­Archbold Smithsonian Biosurvey (USNM); COSTA RICA, 1 male, Heredia, Est. Biol. La Selva, 10.43°N 84.02°W, 1–6.VII.1993, Malaise trap, B. V. Brown & D. Feener col. (LACM); 10 males, Guanacaste, Monte Verde, 15.XII.1985 – 5.I.1986, pan trap, A. Forsyth col. (PMAE); 1 male, Puntarenas, Monte Verde Reserva, 1550m, 16.VIII.1982, L. Masner col. (PMAE); 4 males, Alajuela, Cord. Tilaran, 700m, Penas Blancas, rain forest, IX.1986 – II.1987, Malaise trap, E. Cruz col. (PMAE); ECUADOR, 1 male, Sucumbios, Sacha Lodge, 0.5°S 76.5°W, 290m, 22.II–4.III.1994, Malaise trap, P. Hibbs col. (LACM); BRAZIL, Distrito Federal, 24 males, Brasília, Ecological Reserve of Roncador, forest, Brazilian savannah, 28.XII.1979 – 30.XII.1982, window trap, J. Dalmáceo (IBGE), Espírito Santo, 6 males, Cariacica, Reserva Biológica de Duas Bocas, 24.IX–10.XII.1996, C. O. Azevedo & E. H. Freitas col. (UFES); São Paulo, 11 males, Bauru, Est. Ecol., Brazilian savannah, 6.VI.1991 – 5.VIII.1993, pan trap, S. S. Ruiz col. (UFES); 5 males, Ibitinga, rubber tree crop, 28.XII.1988 – 28.VI.1989, pan trap (UFES); 5 males, Pariquera­açu, tea crop, 6.II– 27.XI.1986, pan trap (UFES); 1 male, São Carlos, Brazilian savannah, 11.X.1988, pan trap, L. A. Joaquim col. (DCBU); 4 males, Juquitiba, forest, 23.IV.1988, Malaise trap, L. A. Joaquim col. (DCBU); Paraná, 27 males, Ponta Grossa, Vila Velha, Reserve IAPAR, Br 376, 3 males, Jundiaí do Sul, Monte Verde Farm, 1 male, Telêmeco Borba, Reserva Samuel Klabin, 1 male, Colombo, Embrapa, Br 476. Km 20, 26.X.1987 – 4.VIII.1988, all Malaise trap, Profaupar survey (DZUP); 1 male, Curitiba, Capão Imbuia, 4–25.II.1969, C. Porter & A. Garcia col. (MCZH); ARGENTINA, 1 male, La Plata, Buenos Aires, IX.1968, C. Porter col. (MCZH).
Distribution. — USA (Florida), Dominican Republic, Saint Vincent, Dominica, Costa Rica, Ecuador, Brazil (Distrito Federal, Espírito Santo, São Paulo, Paraná), Argentina.
description: Published as part of Azevedo, C. O., 2003, Synopsis of the Neotropical Dissomphalus (Hymenoptera, Bethylidae), pp. 1-74 in Zootaxa 338 (1) on pages 20-22, DOI: 10.11646/zootaxa.338.1.1, http://zenodo.org/record/5019741