Agathomerus magdalenae Rodríguez-Mirón & López-Pérez, 2025, sp. nov.
Creators: name: Rodríguez-Mirón, Geovanni M.
name: López-Pérez, Sara
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Megalopodidae
Agathomerus
Agathomerus magdalenae

description: Agathomerus magdalenae sp. nov.
Fig. 3
Type material examined.
Holotype. Mexico • 1 ♂; Chiapas, Aguacero; 6 June 1987; W. B. Warner leg; pinned, with genitalia in a separate microvial; CNIN. Paratypes. MEXICO • 1 ♀; Same data as holotype; CCFEZ-Z. • 1 ♀; Guerrero, Taxco A., Santiago Temixco; 18°28'46"N, 99°37'50.1"W; alt. 1251 m; 23 May 2008; S. López leg.; 15: 55; SBC; CCFEZ-Z • 1 ♂; Oaxaca, Candelaria Loxicha, Portillo del Rayo; 24 May 1990; A. C. Deloya; Bosque tropical y cafetal; CCFEZ-Z.
Diagnosis.
Agathomerus magdalenae sp. nov. is similar to santiagoi sp. nov. and it is distinguished by the following combination of character states: ocular canthi surface convex, scapes longer than antennomeres III, II twice as long as III, pronotum (Fig. 3 G) with a continuous groove on anterior portion, scutellum rounded at apex, metaepisternum (Fig. 3 H) with anterior region impunctate and glabrous, rest coarsely punctate and pubescent; metatibiae ventrally flat, parameres (Fig. 3 E) with rounded apex, and roof robust. In A. santiagoi sp. nov. the ocular canthi surface is concave, scapes are as long as antennomeres III, II half as long as III, pronotum with anterior groove interrupted medially (Fig. 4 F), scutellum slightly emarginate at apex, metaepisternum (Fig. 4 G) uniformly punctate and pubescent, metatibiae ventrally concave, parameres (Fig. 4 D) with a cleft at apex, and slender roof.
Description.
Length 10.8–11.6 mm, width 4.7–5.0 mm. Body (Fig. 2 A, B) with pubescence yellow; occiput, front, antennae, clypeus, labrum and mandibles black, rest of head, thorax, apical region of femora and abdomen orange; pronotal disc, basal region of femora, tibiae and tarsi black; elytra mostly dark blue, anterior lateral margin and apices yellow.
Head (Fig. 3 F). Occiput and interocular region coarsely and sparsely punctate, with long pubescence; ocular canthi surface sparsely convex; antennal awning short, not prolonged onto canthi; antennae barely surpassing posterior edge of pronotum; scapes 1.1 times longer than antennomeres III, II twice as long as III, III 1.5 times longer than V, IV shorter than V, V as long as wide, VI – X wider than long; last maxillary palpomeres subconical, apex blunt.
Thorax. Pronotum bell-shaped (Fig. 3 A, G), pronotal disc convex, with two depressions, coarsely and sparsely punctate, (though less coarse than on head), with erect pubescence, anterior groove interrupted medially, anterior angles coarsely punctate, lateral margins rounded and densely pubescent, posterior region with lateral depressions, posterior margin edge with ridge, posterior lateral angles prominent and rounded. Scutellum depressed with respect to elytral surface, subtriangular, emarginate at apex, coarsely punctate; elytra with external margins subparallel, epipleura with rounded edge; humeri rounded, projecting anterolaterally; disc convex, coarsely and sparsely punctate. Metaepisternum (Fig. 3 H) mostly coarsely punctate and pubescent, anterior portion impunctate and glabrous; metaventrite convex, coarsely punctate and pubescent; pro- and mesofemur slender and elongate, metafemur robust and fusiform (Fig. 3 B); tibiae with pubescence erect, dorsal surface with ocellate punctures and a longitudinal carinae, meso- and metatibiae curved, metatibiae ventrally glabrous, with two incomplete longitudinal carinae.
Abdomen. Tergites evenly sclerotized; pygidium apically sparsely punctate and sparsely pubescent, apex rounded; last abdominal ventrite sparsely punctate and pubescent; setae decumbent; surface concave apically; apical margin subtruncate.
Aedeagus. median lobe (Fig. 3 C) narrowing medially, apical region subtriangular, apex rounded. Tegmen (Fig. 3 E) sclerotize; parameres setose laterally, apex rounded and with long setae; tegmen ring oblong, roof robust, 1.5 times shorter than parameres.
Female. Pronotal disc without depression (Fig. 3 G); femora slightly pyriform, tibiae subcylindrical, swollen near apex; meso- and metatibiae slightly curved. Pygidium with apex subtruncate; last abdominal ventrite with subtruncate apex. Spermatheca (Fig. 3 D) boomerang-shaped, basal part of spermathecal capsule with velum highly developed. Stem with projection, terminal portion coiled and notably long.
Distribution.
Mexico: Chiapas, Guerrero, Oaxaca.
Etymology.
The new species is named after Ma. Magdalena Ordóñez Reséndiz, the degree advisor of the authors.
description: Published as part of Rodríguez-Mirón, Geovanni M. & López-Pérez, Sara, 2025, Redescription of the Neotropical genus Agathomerus (Coleoptera, Megalopodidae, Megalopodinae) and description of three new species from Mexico, pp. 143-158 in ZooKeys 1227 on pages 143-158, DOI: 10.3897/zookeys.1227.118934