Hecabolus shimborii Sormus

Castro, Clóvis Sormus De, Zaldívar-Riverón, Alejandro, Briceño-G, Rosa & Penteado-Dias, Angélica Maria, 2013, The genus Hecabolus Curtis 1834 (Braconidae: Doryctinae) in South America, with description of six new species, Zootaxa 3664 (3), pp. 377-391 : 387-389

Hecabolus shimborii Sormus de Castro & Zaldívar-Riverón sp. n.

Figs 5 A–D.

Diagnosis. This species is morphologically similar to H. mexicanus . However, H. shimborii can be distinguished from the latter species by having the mesopleuron with coriaceous sculpture (without coriaceous sculpture in H. mexicanus ); vein 2CU of fore wing interstitial to vein 1CU (vein 2CU arising after middle of subdiscal cess in H. mexicanus ); and vein M+CU of hind wing 1.4 times longer than vein 1M (vein M+CU as long as 1M in H. mexicanus ).

Description. Female. Body length 3.3 mm; fore wing length 2.1 mm; ovipositor length 2.7 mm.

Head: head width 1.7 times median length (dorsal view), 1.2 times width of mesoscutum. Head behind eyes (dorsal view) weakly convex in anterior half, weakly roundly narrowed in posterior half. Transverse diameter of eye 1.7 times eyes as long as temple. Ocelli small, arranged in equilateral triangle. POL 1.0 times Od, 0.3 times OOL. Ocell-ocular distance about 3.0 times diameter of lateral ocellus. Eye 1.0 times higher than broad. Height of malar space 0.6 times height of eye, 1.5 times basal width of mandible. Face convex, its width 1.2 times height of eye and 1.2 times height of face and clypeus combined. Malar suture absent. Clypeus high, with distinct lower flange. Hypoclypeal depression elliptical, 0.7 times longer than wide. Occipital carina wide, complete, ventrally joined with hypostomal carina. Hypostomal flange wide. Head below eyes roundly narrowed. Antennae 18 antennomeres. Scape 1.5 times longer than maximum width. First flagellar segment straight, 3.3 times longer than apical width, as long as second segment.

Mesosoma: Length 1.9 times its height. Pronotum short, with a submedial pronotal carina. Mesoscutum (lateral view), moderately declivous and roundly elevated above pronotum; its length (dorsal view) 1.0 times maximum width. Median lobe of mesoscutum shortly protruding forward, without distinct anterolateral shoulders. Notauli deep and scrobiculate. Prescutellar depression shallow, with eight longitudinal carinae, about 0.4 times as long as scutellum. Scutellum weakly convex. Precoxal sulcus wide and deep, running along whole length of lower part of mesopleuron. Metanotal tooth indistinct. Metanotal lobe long and narrow, rounded apically. Propodeum with small lateral blunt tubercles.

Wings. Fore wing 3.6 times longer than its maximum width, pterostigma narrow, 3.6 times longer than wide. Vein r arising in the middle of pterostigma. Marginal cell long, its length 2.9 times maximum width. Vein R1 1.2 times longer than pterostigma. Vein r 0.7 times as long as maximum width of pterostigma. Vein 3RSa slightly curved anteriorly and straight in posterior half, 5.2 times longer than r, 2.6 times longer than 2RS. Vein 2RS 2.0 times longer than vein r and 3.3 times longer than vein m-cu. Vein m-cu antefurcal to vein 2RS. Ve i n R S +M a moderately curved. First discal cell long, 2.8 times longer than wide. Vein 1M and vein m-cu slightly divergent posteriorly. Vein 1M 1.4 times longer than vein 1RS, 2.5 times longer than vein m-cu. Vein cu-a straight, clearly postfurcal to vein 1M. Vein M+CU slightly S-shaped. Subdiscal cell open distally, vein 2cu-a absent; vein 2CU interstitial to vein 1CU. Hind wing 4.6 times longer than wide; vein C+Sc+R 0.3 times longer than vein Sc+R; basal cell extremely narrow, its length 22.3 times maximum width, 0.3 times length of wing. Vein M+CU 1.4 times longer than vein 1M.

Legs: Fore tibia with at least seven spines arranged more or less in a line. Hind coxa without basoventral tubercle, weakly protruding forwards in ventro-anterior corner, 1.3 times longer than maximum width. Hind femur moderately broad, 3.1 times longer than wide. Hind tibia wide. Hind tarsus 0.8 times as long as hind tibia. Basitarsus 0.9 times as long as second-fifth segments combined. Second tarsal segment 0.5 times as long as basitarsus, 2.0 times as long as fifth segment (without pretarsus).

Metasoma: Metasoma longer than head and mesosoma combined. First tergite with moderately long basal sternal plate, 0.4 times as long as first tergite; with very small dorsope. Maximum width of first tergite 3.3 times its minimum width; length 0.8 times its apical width, 1.3 times length of propodeum. Second tergite without any furrows. Median length of second tergite 0.7 times basal width of second tergite, 1.2 times length of third tergite. Combined length of second and third tergites 0.7 times their maximum width. Ovipositor sheaths slender, 1.5 times as long as metasoma, 2.4 times longer than mesosoma, about 0.8 times as long as body, 1.2 times as long as fore wing.

Sculpture and pubescence: Vertex striate; frons strongly rugose; face striate-rugose; gena and temple smooth. Pronotal groove, wide, deep and scrobiculate; lateral area of pronotum rugose and setose, with transversal carinae. Mesoscutum coriaceous. Notauli not joining, obscured in basal half of mesoscutum by large, longitudinally striaterugose area. Scutellum slightly coriaceous. Mesopleuron porcate-finely coriaceous dorsally, smooth to finely coriaceous medially and ventrally; venter of mesopleuron slightly coriaceous; subalar groove wide, deep and scrobiculate-finely coriaceous; mesopleural sulcus deep and scrobiculate, precoxal sulcus scrobiculate, slightly rugose between carinae. Metapleuron rugose-areolate. Propodeum rugose-areolate, without defined carinae, with small and blunt lateral tubercles. Hind coxa striate-rugose dorsally, slightly rugose ventrally. Hind femur slightly coriaceous. First and second metasomal tergites longitudinally striate with rugose microsculpture; third tergite with a basal, longitudinally striate semicircular area, remaining area smooth; remaining tergites smooth and polished.

Colour: Body dark brown to black; face brown; mandible honey yellow; scape and pedicel honey yellow; flagellomeres honey yellow at base, turning dark brown to black at apex; ocelli yellow; eye grey; fore and middle legs dark brown, trochanter, trochantellus and tarsi honey yellow; hind coxa, femur and tibia dark brown, trochanter, trochantellus and tibia and tarsi honey yellow; wings hyaline, pterostigma and veins brown. Ovipositor and sheaths dark brown; tip of ovipositor strongly sclerotised.

Variation. Females. Body length 2.4–3.4 mm; fore wing length 2.0– 2.2 mm; ovipositor 2.2–2.7 mm; basal sternal plate 0.3–0.4 times longer than length of first tergite; hind femur 3.3–4.3 times longer than wide.

Male. Body length 2.6 mm; fore wing length 1.8 mm; basal sternal plate 0.4 times longer length of first tergite; hind femur 3.6 times longer than wide. Only male with hind wings broken.

Material examined. Holotype, female (IB-UNAM): Brazil: Nova Teutonia, 27 0 11`B 52 0 23`L, 6.XII.1938, Fritz Plaumann, B.M. 1939-181. Twelve paratypes, eleven females, one male (IB-UNAM; BMNH): Brazil: one female, Nova Teutonia, 27 0 11`B 52 0 23`L, 19/X/1937, Fritz Plaumann col., B. M. 1937-656; one female, Brazil, Nova Teutonia, 27 0 11`B 52 0 23`L, 06/XII/1938, Fritz Plaumann col., B. M. 1939-181; one female, Nova Teutonia, 18/X/1956, F. Plaumann col., B. M. 1957-341; one female, Nova Teutonia, 28/XI/1940, F. Plaumann col., B. M. 1957-341; one female, Nova Teutonia, 27 0 11`B 52 0 23`L, I/1937, Fritz Plaumann col.; two females, Nova Teutonia, 19/XI/1940, F. Plaumann col., B. M. 1957-341; one female, Nova Teutonia, 27 0 11`B 52 0 23`L, XI/1935, Fritz Plaumann col.; three females, Nova Teutonia, 27 0 11`B 52 0 23`L, 12/II/1937, Fritz Plaumann col., B. M. 1937-656; one Male, Nova Teutonia, 27 0 11`B 52 0 23`L, I/1937, Fritz Plaumann col.

Distribution. Nova Teutonia, state of Santa Catarina, southern Brazil.

Biology. Unknown.

Etymology. This species is named in honour of our friend and colleague Eduardo Mitio Shimbori.

Figures

FIGURE 5. Hecabolus shimborii sp. nov. (female, paratype). A habitus, lateral view; B mesosoma, lateral view; C mesosoma, dorsal view; D metasoma, dorsal view.