Anterhynchium (Anterhynchium) grandidieri ( de Saussure, 1890 )

Selis, Marco & Carpenter, James M., 2023, Revision of the Afrotropical species of the genus Anterhynchium de Saussure (Hymenoptera: Vespidae: Eumeninae), Zootaxa 5233 (1), pp. 1-102 : 87-90

Anterhynchium (Anterhynchium) grandidieri ( de Saussure, 1890)

( Fig. 29–30 )

Odynerus grandidieri de Saussure 1890: 161 (key), 164, 167, pl. 4 figs. 16a,c,t, ♀ —“ Madagascar ” (holotype MNHN).

Odynerus hildebrandti de Saussure 1890: 161 (key), 165, 166, pl. 17 figs. 10, 10c, ♀, ♁—“ Madagascar.— Partie centrale” (syntypes ZMHB).

Epiodynerus grandidieri limbatulus Giordani Soika 1991: 81 , ♁—“ Madagascar centrale: Analavory ” (holotype UUZM). Syn. nov.

Diagnosis. This species can be recognized by: coloration black and dark red-brown with narrow apical yellowish markings on T1, pilosity on mesosoma silvery, gena narrower than eye, pronotal carina not lamellate, propodeal angles produced into one to four spines, male F11 short and nearly straight and barely reaching apex of F8, male mid femur simple.

Typical material examined. Holotype of Epiodynerus grandidieri limbatulus : “M-cus / 88:255 // MADAGASCAR / Centre : / Analavory / 2 III 1988 / L.A.NILSSON // HOLOTYPUS / grandidieri / limbatulus // Epiodynerus / grandidieri / limbatulus / See Giordani-Soika / 1991:81” ( UUZM).

Description. MALE. Fore wing length 8.0 mm.

Head 1.25 × as wide as long in frontal view. Clypeus in lateral view barely convex basally, then flattened; in frontal view 1.2 × as long as wide, apical margin nearly truncate, about 0.3 × as wide as clypeus width, apical teeth in shape of sharp right angles, with very short and dull carinae; free margins of clypeus shortly lamellate. Interantennal space sharply carinate. Distance from posterior ocellus to occipital carina 1.6 × as long as distance from posterior ocellus to inner eye margin. Gena 0.6 × as wide as eye at bottom of ocular sinus; occipital carina complete, stronger on ventral third. Scape 2.95 × as long as apically wide; F1 1.8 × as long as wide; F2–F4 and F9– F10 weakly longer than wide; F5–F8 subquadrate; F11 short and nearly straight, in lateral view regularly tapering from base to apex, barely reaching apex of F8; tyloid present only on F9. Pronotal carina complete, dorsally sharp but not lamellate, obtusely angled on humeri; pretegular carina strong; sides of pronotum in dorsal view converging anteriorly. Mesoscutum 0.85 × as long as wide between tegulae, weakly convex in lateral view. Scutellum weakly and evenly convex in lateral view, barely elevated above level of mesoscutum. Metanotum in lateral view almost entirely vertical, with a very short oblique dorsal face; faces separated by an irregular transverse ridge, which is absent medially. Tegula elongate, outer margin evenly convex; posterior lobe triangular and almost equaling parategula. Parategula short and curved, apically rounded. Mesepisternum with strong epicnemial carina, reaching up to transverse furrow. Propodeum in lateral view nearly vertical; posterior face broad and almost flattened, very weakly concave, median furrow present on dorsal half; dorsal faces convex and not separated from other faces; lateral faces strongly convex on posterior margin and not distinct from posterior face; propodeal carinae absent, but posterolateral corners produced in one to four thick spines. T1 broadly campanulate, in dorsal view 0.6 × as long as wide, sides smoothly passing into curved anterior margin; in lateral view regularly convex. T2 about as wide as long in dorsal view, evenly convex in lateral view. S 2 in lateral view evenly convex from base to apex.

Head with shallow flat bottomed punctures, interspaces about as wide as punctures diameter and becoming wider on vertex and gena; ocular sinus with dense micropunctures in its ventral part. Clypeus dull with barely visible sparse punctures. Pronotum, mesoscutum and scutellum with deep punctures, interspaces equal to or shorter than punctures diameter, denser on scutellum. Metanotum coarsely punctured dorsally, smooth ventrally. Mesepisternum with large flat bottomed punctured arranged in irregular series, interspaces broad. Dorsal plate of metaepisternum transversely striate on dorsal half; ventral plate shallowly punctured along anterior margin. Dorsal faces of propodeum with coarse punctured and interspaces reduced to irregular ridges; posterior face densely striate on entire surface; lateral faces weakly striate and with some sparse shallow punctures. Metasoma with oblique punctures, deeper on T1, apex and sides of T2 and on T3, disappearing on last tergites; S1 irregularly rugose, S2–S7 punctured similar to respective terga, but punctures deeper and sparser. Covered by silvery pubescence, lacking on frons, dust like on metasoma, some longer curved setae on pronotum, mesoscutum and scutellum.

Black with large irregular dark red-brown markings on: gena, dorsal side of mesosoma, mesepisternum, T1–T3, S1–S2 and legs; S3 apically and T4–T7 and S4–S7 entirely ferruginous; following parts yellowish: clypeus, inner eye margin up to ocular sinus, median line on interantennal space, apical dot on ventral side of scape, regular apical band (sometimes reduced) on T1. Wings hyaline with orange tinge, vention orange and becoming darker apically.

FEMALE. Fore wing length 10.0 mm.

Like male, except: head 1.25 × as wide as long in frontal view; clypeus in frontal view pyriform, 1.1 × as long as wide, apical margin subtruncate and 0.25 × as wide as clypeus width, apical teeth more or less right angled and shortly carinate, surface of clypeus densely micropunctate and dull, sparse rounded and flat bottomed punctured in the middle; gena 0.75 × as wide as eye at bottom of ocular sinus; cephalic foveae placed in a shallow and small depression, with a median sharp septum; scape 3 × as long as apically wide, F1 1.7 × as long as wide, F2–F4 subquadrate, F5–F9 wider than long and becoming progressively shorter, F10 bullet shaped; pronotal carina more rounded on humeri; punctures of mesosoma sparser; tegument of head, mesosoma and legs more brownish, with yellow markings on clypeus, interantennal space, inner margin of eye, gena, cephalic foveae, tegula, lateral carina of propodeum and apical band on T1.

Distribution. Madagascar: Antananarivo, Fianarantsoa, Toamasina, Toliara ( Borsato 1999; de Saussure 1890, 1900; Friederichs 1919; Giordani Soika 1941, 1991; Gusenleitner 2004b; von Schulthess 1919) ( Fig. 26 ).

Remarks. The subspecies limbatulum was described by Giordani Soika (1991) based on a single male specimen characterized by reduced apical yellow line on T1. After examination of the holotype of that subspecies, no morphological differences with the typical subspecies were found. As the extension of apical bands on metasomal segments is a variable character in most Vespidae species, the subspecies limbatulum is synonymized under the typical form.

Figures

FIGURE 26. Distributional map of Malagasy species.

FIGURE 29. Anterhynchium grandidieri (de Saussure, 1890). A, habitus of male. B, head of male in frontal view. C, head of female in frontal view. D, flagellum of male in lateral view.

FIGURE 30. Anterhynchium grandidieri (de Saussure, 1890). A, head of female in dorsal view. B, propodeum in lateral view. C, male genitalia: aedeagus in lateral view, aedeagus in ventral view, digitus and volsella.