Hecabolus sulmatogrossensis 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 : 389-390

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

Figs 4 A, D

Diagnosis. This species is morphologically similar to H. semiaridus , but it can be distinguished from the latter species by the features mentioned above (see H. semiaridus diagnosis).

Description. Female. Body length 3.3 mm; fore wing length 2.4 mm; ovipositor length about 3.7 mm.

Head: head width 1.4 times median length (dorsal view), 1.0 times width of mesoscutum. Transverse diameter of eye 0.8 times as long as temple. Ocelli small, arranged in equilateral triangle. POL 2.0 times Od 0.5 times OOL. Eyes glabrous, without evident emargination opposite antennal sockets. Height of malar space 0.5 times height of eye, 1.0 times basal width of mandible. Face convex, its width 1.3 times height of eye and 1.3 times height of face and clypeus combined. Malar suture absent. Clypeus high, with a distinct lower flange. Hypoclypeal depression small and elliptical, 0.5 times longer than wide. Occipital carina wide, complete, ventrally joined with hypostomal carina. Hypostomal flange wide. Head below eyes roundly narrowed. Antennae 17 antennomeres. Scapus 1.7 times longer than its maximum width. First flagellar segment straight, slightly widened anteriorly, 2.0 times longer than its maximum width, 0.9 times as long as second segment.

Mesosoma: Length of mesosoma 2.2 times its height. Pronotum moderately long, dorsally weakly convex, with distinct submedial pronotal carina. Mesoscutum (lateral view) moderately declivous, roundly elevated above pronotum, its length (dorsal view) 0.6 times maximum width. Median lobe of mesoscutum shortly protruding forward, without distinct anterolateral shoulders. Notauli wide, deep and scrobiculate. Prescutellar depression shallow, long, with seven carinae, about 0.5 times as long as scutellum. Scutellum weakly convex. Precoxal sulcus wide, deep and straight, running along 0.6 length of lower part of mesopleuron. Metanotal tooth blunt, almost indistinct. Metapleural lobe large and narrow, rounded apically. Propodeum with small and blunt lateral tubercles.

Wings: Fore wing 3.7 times longer than its maximum width. Pterostigma 4.0 times longer than wide. Vein r arising in the middle of pterostigma. Marginal cell long, its length 2.9 times maximum width. Vein R1 1.4 times longer than pterostigma. Vein r 0.7 times longer than maximum width of pterostigma. Vein 3RSa slightly curved anteriorly and straight in posterior half, 6.5 times longer than vein r, 2.7 times longer than vein 2RS. Vein 2RS 2.3 times longer than vein r and 2.3 times longer than vein m-cu. Vein m-cu interstitial to vein 2RS. Vein (RS+M)a slightly curved. First discal cell long, 2.5 times longer than wide. Veins 1M and m-cu slightly divergent posteriorly. Vein cu-a postfurcal to vein 1M. Vein 1M 2.5 times longer than vein 1RS, 2.5 times longer than vein m-cu. Vein 1M equal to vein cu-a length. Vein M+CU distinctly S-shaped. Subdiscal cell open distally, vein 2cu-a absent; vein 2CU interstitial to vein 1CU. Hind wing 5.0 times longer than wide. Vein C+Sc+R 0.2 times longer than vein Sc+R. Basal cell considerably narrow, its length 19.0 times maximum width, 0.3 times length of wing. Vein M+CU 1.5 times longer than vein 1M. Vein m-cu unsclerotised, weakly oblique toward base of wing.

Legs: Fore tibia with at least nine slender spines arranged more or less in a line. Hind coxa without basoventral tubercle, weakly protruding forwards in ventro-anterior corner, 1.7 times longer than maximum width. Hind femur moderately broad, 2.9 times longer than wide. Hind tibia wide. Hind tarsus 0.9 times as long as hind tibia. Basitarsus 0.8 times as long as second-fifth segments combined. Second tarsal segment 0.4 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 basal sternal plate moderately long, 0.4 times as long as first tergite; with very small dorsope. Maximum width of first tergite 4.4 times its minimum width; length 1.5 times its apical width, 0.9 times length of propodeum. Second tergite without furrows. Median length of second tergite 0.4 times basal width of second tergite, 0.9 times length of third tergite. Combined length of second and third tergites 0.9 times their maximum width. Ovipositor sheaths slender, 1.9 times longer than metasoma, 3.3 times longer than mesosoma, about 1.2 times as long as body, and 1.5 times as long as fore wing.

Sculpture and pubescence. Vertex and frons entirely smooth. Face slightly striate; temple and gena smooth. Sides of pronotum rugose. Mesoscutum, median lobe and scutellum entirely smooth. Mesopleuron entirely smooth, subalar groove wide, deep and scrobiculate; mesopleural sulcus shallow and scrobiculate; precoxal sulcus scrobiculate with slightly rugose microsculpture. Metapleuron entirely smooth and setose posteriorly. Propodeum strongly rugose-areolate, with a median and a lateral longitudinal carina. Hind coxa smooth dorsally, slightly striate ventrally. Hind femur smooth, sparsely setae. First metasomal tergite longitudinally striate with rugose microsculpture; second metasomal tergite longitudinally striate with rugose microsculpture basally, remaining area smooth; remaining metasomal tergites smooth and polished.

Colour: Body brown, scape, pedicel, face and clypeus honey yellow; flagellomeres honey yellow, turning black towards apex. Fore legs brown; tarsi honey yellow to brown; hind tibia yellow on basal third; brown on basal two thirds. Fore wing hyaline, pterostigma and veins brown.

Material examined. Holotype, female: Mato Grosso, Rio Caraguatá, 13.iv.1953, F. Plaumann B.M. 1957-341.

Distribution. The locality of the only known specimen of this species is in Mato Grosso do Sul state, midwest Brazil.

Biology. Unknown.

Etymology. The name of this new species refers to the state where its type specimen was collected.

Figures

FIGURE 4. Hecabolus sulmatogrossensis sp. nov. (female, holotype); A habitus, lateral view. Hecabolus semiaridus sp. nov. (female, holotype); B mesosoma, dorsal view; C metasoma, dorsal view. Hecabolus sulmatogrossensis sp. nov. (female, holotype); D fore and hind wings. Hecabolus robustus sp. nov. (female, holotype); E fore wing. Hecabolus julianoi sp. nov. (female, holotype); F fore wing.