A new species of <i>Zethus (Zethoides)</i> Fox, 1899 (Hymenoptera, Vespidae) from South America

Lopes, Rogério Botion

doi:10.11606/1807-0205/2022.62.051

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Papéis Avulsos de Zoologia

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ARTICLE • Pap. Avulsos Zool. 62 • 2022 • https://doi.org/10.11606/1807-0205/2022.62.051 copy

A new species of Zethus (Zethoides) Fox, 1899 (Hymenoptera, Vespidae) from South America

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Zethus is the most speciose genus among vespid wasps and has become even larger after the inclusion of closely related taxa as subgenera after a morphological phylogenetic analysis. Despite being taxonomically reviewed in the past, the Neotropical diversity of the group demonstrates potential for even further growth. A new species of Zethus (Zethoides) Fox, 1899 is herein described, being the fifth one to be described in this subgenus after the great taxonomic revision of the genus in the New World.

Keywords:
Morphology; Taxonomy; Zethus biglumis species-group

Character	Species
Character	*Z. latipetiolatus*	*Z. lunaris*
T1, expansion	more gradual in profile, becoming much wider apically; larger apical flaps directed outwards (Fig. 2A, B)	more abrupt in profile, apical width not much greater than at middle of expansion; small apical flaps, directed downwards (Fig. 2C, D)
T1, punctation	smooth with sparse micropunctation (Fig. 2A, B)	macropunctate (Fig. 2C, D)
T1, pilosity	Only tomentum; bristles absent (Fig. 2A, B)	Tomentum absent; long erect thick bristles (Fig. 2C, D)
Occipital carina	shorter, straightly raised (Fig. 3A)	higher, reflexed (Fig. 3B)
Last male flagellomere	slender, apically rounded (Fig. 3C)	wider, apically truncate (Fig. 3D)
Male clypeus, apex	Trapezoid concavity (Fig. 3E)	Semicircular concavity (Fig. 3F)
Male mandible, incision between teeth II and III	Smaller, quadrate (Fig. 3E)	Larger, rounded (Fig. 3F)
Tubercle of discoid punture	only slightly and gradually raised (Fig. 3G)	evidently and abruptly raised (Fig. 3H)
Apical propodeal lamella.	Oblique, ending right above valvula (Fig. 3I)	Horizontal, well-spaced from valvula (Fig. 3J)

Museu de Zoologia da Universidade de São Paulo Av. Nazaré, 481, Ipiranga, 04263-000 São Paulo SP Brasil, Tel.: (55 11) 2065-8133 - São Paulo - SP - Brazil
E-mail: einicker@usp.br

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[1] Edited by:

Helena Carolina Onody