Dissomphalus perturbatus Alencar & Azevedo, 2008

Alencar, I. D. C. C. & Azevedo, C. O., 2008, A new species-group of Dissomphalus (Hymenoptera: Bethylidae), with description of thirteen new species, Zootaxa 1851 (1), pp. 1-28 : 17-19

Dissomphalus perturbatus Alencar & Azevedo , sp. nov.

( Figs. 60–65 )

Dissomphalus microstictus Evans, 1969 in partim.

Diagnosis: male. This species is easily diagnosed by the unique combination of characters: the paramere wide subapically in dorsal view; the filament of ventral ramus inserted subapically, nearly as long as ramus and convergent; the dorsal body with basal bar triangular, upper margin continuous with outer lobe; the connector with lateral expansion narrowing upward, mid part triangular; and the basal plate with upper margin concave, median lower margin straight with pre-basal constriction.

Description: male, body length 5.78 mm; LFW 4.15 mm. Color: head and mesosoma black, pronotum with narrow posterior line castaneous; clypeus and metasoma dark castaneous; mandible, palpi and legs yellowish; antenna light castaneous and gradually darker distally; wings subhyaline.

Head: mandible tridentate, uppermost tooth inconspicuous. Clypeus with trapezoidal median lobe, median carina complete. Relative length of first four antennal segments ~17:5:4:6 segment XI 2.0x as long as wide. Frons coriaceous, punctures large and shallow, separated by 0.5–1.5x their diameter. LH 1.0x WH; WF 0.6x WH; WF 1.0x HE; OOL 0.6x WOT; DAO 0.4x WOT; posterior ocellus distant from crest of vertex 1.0x DAO. Vertex somewhat concave; VOL 0.5x HE.

Mesosoma: thoracic dorsum weakly coriaceous, punctures smaller and sparser than those of frons. Pronotal disc 0.6x length of mesoscutum. Notaulus complete. Propodeal disc 0.8x as long as wide, reticulate, median carina incomplete, posterior part elevate, polished and shinny; lateral surface of propodeum weakly coriaceous; declivity imbricate, median carina absent. Fore femur 3.0x as long as wide.

Metasoma ( Fig. 60 ): tergite II with pair of circular, large and shallow lateral depression, separated by 2.0x their diameter, each depression with tubercle, which has small pit on top with one short seta directed backward, anterior inner margin with very short few setae and lateral margin with long setae. Hypopygium with posterior margin concave.

Genitalia ( Figs. 61–65 ): paramere wide subapically in dorsal view; apex rounded and arched mesad; ventral margin strongly concave apically, apical corner large and rounded, somewhat concave basally; dorsal margin convex with subapical acute concavity ( Figs. 61, 62, 65 ). Dorsal margin of basiparamere somewhat concave. Cuspis long and arched, apex rounded, digitus with apex pointed and smooth in upper margin. Aedeagus with ventral ramus shorter than dorsal body, laminar, surface horizontal, inner margin straight in ventral view, ventrad except base flat with narrow fold, outer margin convex, basally with ventral fold, filament inserted subapically, nearly as long as ramus, convergent, apex somewhat dilated, narrow, thin and arched dorsad ( Fig. 61 ); dorsal body with three pairs of apical lobes, outer pair laminar, surface vertical, wide, apex convergent, dorsal margin convex in lateral view ( Fig. 64 ) and concave in dorsal view ( Fig. 62 ), ventral margin with apex produced, subapical strong concavity and projection straight and serrate ( Figs. 63, 64 ), dorsal inner pair large and long, membranous and hairy, ventral inner pair longer than dorsal one, membranous and hairy; basal bar triangular, upper margin continuous to outer lobe with small median tooth, lower margin touching basal plate; connector with lateral expansion narrowing apicad, divergent apicad, mid part triangular; basal plate with upper margin concave, median lower margin straight with pre-basal constriction ( Fig. 62 ). Apodeme of aedeagus extending beyond elliptical genital ring.

Material examined: HOLOTYPE: male, Espírito Santo, Santa Tereza , Estação Biológica de Santa Lúcia, [19º58’S 40º32W], 26–29.vii.2004, armadilha Malaise, M. T. Tavares e eq. Col ( UFES) (previously identified as D. microstictus in Redighieri & Azevedo 2006) . PARATYPES: Material identified by Azevedo (1999b) as D. microstictus : BRAZIL ; 1 male, Pará, Tucuruí, Rio Tocantins, [~ 3º42’S 49º42’W], 9.x.1985, interception trap, N. Degalier col. ( UFES) ; Paraná, São José dos Pinhais, Serra do mar, BR 277, km 54, [~ 25º31’S 49º13’W], 28.ix.1987, Levantamento Profaupar, Malaise trap ( UFES) . Material identified by Redighieri & Azevedo (2006) as D. microstictus : Espírito Santo, Santa Tereza, Estação Biológica de Santa Lúcia, 19º58’S 40º32W, armadilha Malaise : 6 males, 06–12.iv.2001, C. O. Azevedo e eq. col. ( MZSP) , 1 male, same data as holotype ( UFES) . New material: BRAZIL, Espírito Santo : 1 male, Santa Tereza, Estação Biológica de Santa Lúcia, 19º58’S 40º32W, 07.vii.2007, varredura, Azevedo e eq col.; Santa Maria de Jetibá , Fazenda Paulo Seick , Malaise , Tavares , Azevedo e eq. col., 20º04’27.9”S 40º44’51.3”W : 3 males, 06–13.xii.2002 ( UFES) ; 3 males, 29.xi–06.xii.2002 ( UFES) ; 9 males, 20º02’31.1”S 40º44’51.3”W, 29.xi–06.xii.2002 ( UFES) ; 5 males, Domingos Martins, Pico do Eldorado , 20º22’17”S 40º39’29”W, 26.xi–03.xii.2004, Malaise, Tavares e eq. col. ( UFES) .

Variation: body length from 3.70 to 6.0 mm; clypeus subtrapezoidal; mandible bidentate; lateral surface of propodeum without polished and shinny region anteriorly; tergal process with depression larger or smaller than holotype. The basal bar can or cannot be connected to basal plate.

Comments: this species is similar to D. refertus by having two pairs of inner lobes. However D. perturbatus has the basal bar with the upper margin continuous with the outer lobe and the connector with the lateral expansion narrowing upward, the mid part with the apex triangular whereas D. refertus has the basal bar with the upper margin concave not continuous with the outer lobe and the connector with the apex of lateral expansion bifurcated, the mid part dilated basally with the ventral hook apicad.

Etymology: the specific Latin epithet refers to the confusion in previous identification attempts.

Distribution: Brazil (Pará, Espírito Santo).

Figures

FIGURES 53–65. 53–59, Dissomphalus perparvus. 53, mandible, frontal view; 54, tergal process, dorsal view; 55, genitalia, ventral view; 56, genitalia, dorsal view; 57, outer lobe, ventral view; 58, apex of outer lobe, lateral view; 59, paramere, lateral view; 60–65, Dissomphalus perturbatus. 60, tergal process, dorsal view; 61, genitalia, ventral view; 62, genitalia, dorsal view; 63, outer lobe, ventral view; 64, apex of dorsal body, lateral view; 65, paramere, lateral view. (Scale bars = 250 µm).