Angiopolybia obidensis (Ducke, 1904)

Barroso, Paulo Cezar Salgado, Menezes, Rodolpho Santos Telles, de Oliveira, Marcio Luiz & Somavilla, Alexandre, 2022, A systematic review of the Neotropical social wasp genus Angiopolybia Araujo, 1946 (Hymenoptera: Vespidae): species delimitation, morphological diagnosis, and geographical distribution, Arthropod Systematics & amp; Phylogeny 80, pp. 75-97 : 75

Angiopolybia obidensis (Ducke, 1904)

Figs 4a-f , 6f-j , 7i

Polybia obidensis Ducke, 1904: 348 (key), 354; Ducke, 1907: 140 (synonym: P. paraensis var. luctuosa Schulz, 1905); Richards, 1978: 234 (lectotype designation) [examined by images].

Polybia paraensis luctuosa Schulz, 1905: 132; Ducke, 1907: 140 (synonym of P. obidensis Ducke, 1904); Richards, 1978: 234 (lectotype designation) [examined].

Stelopolybia obidensis ; Ducke, 1910: 519 (key), 526.

Angiopolybia obidensis ; Araujo, 1946: 169; Richards, 1978: 231 (key), 234; Andena et al., 2007: 59 (phylogenetic discussion), 60: (table 2 - characters matrix), 61 (fig. 2B), 62 (fig. 4A, 5 - cladogram), 63 (key) e 64 (locality of examined material).

Stelopolybia (Angiopolybia) obidensis Richards and Richards, 1951: 81 (list of species).

Type locality.

Óbidos, Pará, Brazil.

Diagnosis.

Anterior wing of 12-14 mm; eyes with very small-sized and sparse bristles; angulate gena with enlarged lower and upper region; pronotal lamella very elevated along the anterior margin, one third of the height of antennal socket; axillary fossa with anterior margin directed to the anterior region; posterior submedian translucent mark not inserted in a depression.

Redescription of female (Fig. 4a, b, c).

Size. (1) Head 1.77 mm long, 3.13 mm high, and 3.56 mm wide; (2) mesosoma 5.69 mm long, anterior wing 13.38 mm long, and posterior wing 8.55 mm long; (3) metasoma 8.57 mm long. Head. (1) Lateral ocelli with 0.26 mm and median ocellus with 0.28 mm of diameter, inserted in a declivity of the vertex, and the lateral ocelli separated from the eyes for 1.7 times its diameter. (2) Compound eyes with very small-sized and sparse bristles. (3) Frons with interantennal space with 1.7 times the height of antennal socket. Anterior tentorial fovea closer to the antennal socket than to the eye. Central region of the frons with very long bristles. (4) Antennal socket 0.34 mm high. (5) Clypeus as high as wide, contact with eyes for a distance of approximately the height of antennal socket and lateral lobe not touching the eye. Clypeus with long bristles, but with very long bristles on the apical margin. (6) Gena wider than half of the width of the eye at the level of the ocular sinus. Mesosoma. (1) Anterior lamella of pronotum with height of one third of the height of antennal socket. Pronotal fovea with ellipsoid shape, shallow and without anterior prominence. (2) Mesoscutum convex and as long as wide. (3) Tegula 1.5 times longer than wide. (4) Axillary fossa with anterior margin directing to the anterior region. (5) Propodeum with translucent posterior submedian mark, anterior to the propodeal valve, not inserted in a depression. Propodeal valve complete and expanded, median region with two third of the height of antennal socket. (6) Anterior wing with prestigma as long as wide. (7) Posterior wing with 11 hamuli. Metasoma. (1) Metasomal tergum I 1.7 times longer than broad. Tergum with angulation in the posterior third, in lateral view. (2) Metasomal tergum II 0.8 times longer than broad and without a row of very long bristles on the posterior margin. Color. Brown in general. Yellow: median longitudinal band and lateral of the frons, interantennal elevation, band surrounding the disc of the clypeus, mandibles, lower quarter of the gena, malar space, band contouring the posterior margin of the pronotum, tegula, spot anterior to the scrobal furrow of the mesepisternum, longitudinal submedian band and thin lateral band in the mesoscutum, axilla, anterior half of the scutellum, metanotum, submedian band in the propodeum, margin anterior to the propodeal valve, upper region of the metapleural basalar area, apex of the coxae, femora, tibiae and tarsi, bands along the posterior margins of the metasomal terga I-III and sternum II. Yellowish-brown: vertex and gena. Black: metasomal terga II-VI and metasomal sterna II-VI. Reddish-brown: inferior margin of the clypeus and the mandibular teeth. Wings with yellowish-brown in the cells and venation, except reddish-brown in the veins C, Sc+R, M+Cu, M and in the beginning of the Cu.

Description of male (Fig. 4d, e, f).

Size. (1) Head 1.6 mm long, 2.7 mm high, and 3.2 mm wide; (2) mesosoma 5.2 mm long, anterior wing 12.4 mm long, and posterior wing 8.10 mm long; (3) metasoma 8.3 mm long. Head. (1) Lateral ocelli with 0.24 mm and median ocellus with 0.27 mm of diameter. (2) Frons with interantennal space with 1.5 times the height of antennal socket. Anterior tentorial fovea closer to the eye than to the antennal socket. (3) Antennal socket 0.31 mm high. (4) Clypeus 1.2 times higher than wide and apex less acute than in the female. Pubescence stronger than in the female. (5) Gena with half of the width of the eye at the level of the ocular sinus. Mesosoma. (1) Mesoscutum 1.1 times longer than wide. Metasoma. (1) Metasomal tergum I 1.7 times longer than broad. (2) Metasomal tergum II 0.8 times longer than wide. Posterior margin with slight emargination in the center. Genitalia (Fig. 6f - j). Paramere 2 mm long and 0.81 mm wide; parameral spine with one fifth of the paramere, straight and with long bristles; lobe with rounded apex and slightly curved downwards. Aedeagus 1.72 mm long; enlarged valve with a small emargination in the tip; apical portion 0.66 mm long and curved to the venter, ventral margin with denticles directed for the anterior region; denticulation with large and conical denticles in the basal and apical thirds and small denticles with widened bases in the median third, more sclerotized than the rest of the apical portion; small-sized bristles with alveolar base, closer in the lower half and sparse in the upper half; median expansion with one denticle and with acute apex; lateral apodeme not flattened dorsoventrally at the apex; basal apodeme arched to the venter. Digitus 3.4 times longer than wide; apical process little curved in the region of the upper half and with bristles of alveolar base small and sparse; rounded anteroventral lobe with a strip of black scale-like bristles crossing it obliquely at the base of the digitus; bristles absent in the lower margin and basal articulation. Cuspis approximately 0.44 mm long, with 16 black scale-like bristles on the lateral lobe, and long bristles with alveolar base and close throughout the area of the cuspis, except sparse in the central region and on the ventral margin.

Morphological variation (Fig. 7i).

Some A. obidensis specimens found in São Gabriel da Cachoeira (Amazonas) and Parque Nacional Serra da Mocidade (Roraima) are darker, like A. paraensis of coloration transitional between the yellow form and the black and yellow forms, which also occurs in these regions.

Nest.

Unknown.

Comparative comments.

A. obidensis resembles A. paraensis , but it is distinguished by the lamella along the anterior margin of the pronotum which is very elevated (one third of the height of antennal socket) in A. obidensis , and low (one fifth of the height of antennal socket) in A. paraensis ; pronotum with prominence absent in front of the fovea, but slight prominence in front of the fovea in A. paraensis ; angulate gena with enlarged lower and upper region, but gena with only enlarged lower region in A. paraensis ; parameral spine straight, but spine curved upwards in A. paraensis ; aedeagus with lateral apodeme not flattened dorsoventrally at the apex, but apex of the lateral apodeme flattened in A. paraensis .

Additional comments.

The label information of the male specimen described is Brazil, AM, Itacoatiara, Mil Madeireira. 16.xii.1999, Malaise , J. Vidal Leg.

Lectotype.

♀, TYPE / Obidos / Polybia obidensis Ducke, ♀ typ. / MUSEUM PARIS, Brésil, Obidos, A. Ducke 1904 ( MNHN, Paris), record MNHN, Paris EY25586 (Fig. 4a, b, c ). Type specimen analyzed by images.

Type material examined.

PARALECTOTYPE / Surinam, ex.coll. Fruhstorfer / spec. Typ. / Polybia paraensis luctuosa Schlz. ♀ an ♀, W. A. Schulz det. / Schulz Coll., 1908-157. / B.M. TYPE, HYM., 18.767b / (1 ♀, NHM). Polybia paraensis luctuosa is a junior synonym of Polybia obidensis Ducke, 1904, redescribed species here.

Additional material examined.

We examined 102 females and three males for A. obidensis ; see supplementary material S1.

Geographic distribution.

Brazil: Acre, Amapá, Amazonas, Mato Grosso, Pará, Roraima (new record); French Guiana; Guyana; Suriname (Fig. 10c ).

Figures

Figure 4. Lectotype, female of Angiopolybia obidensis (Ducke, 1904): a. lateral view, b. dorsal view, c. head in frontal view. Male: d. head in frontal view, e. lateral view, f. dorsal view. Scale: 1 mm. Source: Agniele Touret-Alby MNHN for images a, b, and c.

Figure 6. Male genitalia of three Angiopolybia species. Angiopolybia pallens: a. paramere, b. aedeagus in left lateral view, c. aedeagus in ventral view, d. digitus, e. cuspis (image mirrored). Angiopolybia obidensis: f. paramere, g. aedeagus in left lateral view, h. aedeagus in ventral view, i. digitus, j. cuspis. Angiopolybia paraensis: k. paramere, l. aedeagus in left lateral view, m. aedeagus in ventral view, n. digitus, o. cuspis. Scale: 0.5 mm.

Figure 7. Morphological variation of Angiopolybia species. Angiopolybia pallens: a. Cayenne, French Guiana; b. Amazonas, Brazil; c. Bahia, Brazil; d. Sao Paulo, Brazil; e. Loreto, Peru; f. Napo, Ecuador; g. Chapare, Bolivia. Angiopolybia zischkai: h. Pipeline, Panama. Angiopolybia obidensis: i. Roraima, Brazil. Angiopolybia paraensis: j. Roraima (brown and yellow specimen), Brazil; k. Napo, Ecuador (brown specimen); l. Crique Alama, French Guiana (dark brown specimen). Scale: 1 mm.

Figure 10. Map of South and Central America showing the geographic distribution of Angiopolybia species: a. Angiopolybia pallens, b. Angiopolybia zischkai, c. Angiopolybia obidensis, and d. Angiopolybia paraensis.