Eupogonius similis, Santos-Silva, 2022

Santos-Silva, Antonio, 2022, New species, new records, synonymy, and notes in Eupogonius LeConte (Coleoptera, Cerambycidae, Lamiinae, Desmiphorini), Papéis Avulsos de Zoologia (Pap. Avulsos Zool., S. Paulo) 62, pp. 1-12 : 8-11

publication ID	https://doi.org/ 10.11606/1807-0205/2022.62.027
publication LSID	lsid:zoobank.org:pub:E80D5187-3B33-42A6-AA31-8D3466D086D0
persistent identifier	https://treatment.plazi.org/id/890787AA-F057-FF91-FF42-F8BFFB4DF92C
treatment provided by	Felipe
scientific name	Eupogonius similis
status	sp. nov.

Treatment

Eupogonius similis View in CoL sp. nov.

( Figs. 4 View Figure 4 A-4D, 5A-5C)

Description: Holotype female ( Figs. 4 View Figure 4 A-4D, 5B-5C): Integument mostly dark brown; parts of ventral mouthparts brownish; basal third of antennomeres III-IV dark reddish brown; base of antennomeres V-VIII dark reddish brown, darker than on III-IV (distinct only in bright light); apex of antennomere XI yellowish brown. Base of pronotum dark reddish brown. Elytra with irregular reddish-brown areas (all of them corresponding to regions where pubescence forms maculae). Apex of femora dark orangish brown. Anterior ¾ of tibiae dark orangish brown, except dark brown base.

Head: Frons moderately coarsely, abundantly punctate; with abundant yellowish-brown pubescence not obscuring integument close to eyes and toward vertex, pale yellow toward clypeus, with long, erect white setae interspersed on wide central area, and long, erect brown setae interspersed close to eyes. Vertex and area behind upper eye lobes with sculpturing as on frons; with abundant yellowish-brown pubescence partially obscuring integument, except sparser pubescence on central area close to prothorax of vertex; with a few long, erect brown setae close to eyes. Area behind lower eye lobes moderately coarsely, abundantly punctate (punctures slightly coarser than on vertex toward ventral surface); with abundant yellowish-brown pubescence not obscuring integument, and long, erect white setae interspersed. Genae somewhat finely, sparsely punctate except smooth apex; with pale yellow pubescence partially obscuring integument, except glabrous smooth area, and long, erect white setae interspersed. Postclypeus with pale yellow pubescence not obscuring integument (pubescence more yellowish-brown laterally), and long, erect yellowish setae interspersed.Labrum coplanar with anteclypeus at posterior half, inclined at anterior half; with brownish pubescence not obscuring integument, and long, erect yellowish setae interspersed; anterior margin with dense fringe of golden setae. Gulamentum smooth and glabrous, except narrow anterior region slightly depressed and with yellowish-white pubescence not obscuring integument. Area of connection between eye lobes with irregular row of ommatidia; distance between upper eye lobes 0.37 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.75 times distance between outer margins of eyes. Antennae 1.4 times elytral length, reaching elytral apex. Scape moderately coarsely, abundantly punctate; with brownish pubescence partially obscuring integument (pubescence more brownish close to apex); with long, erect dark setae dorsally, and both, brownish and white setae interspersed ventrally (erect setae longer ventrally). Pedicel with brownish pubescence partially obscuring integument, and yellowish-brown pubescence and long, erect setae interspersed throughout. Antennomere III with yellowish-white pubescence on basal third, brown on remaining surface; with long, erect, moderately abundant brown setae interspersed throughout (erect setae longer ventrally); antennomere IV with yellowish-white pubescence on basal third, brown on remaining surface; with long, erect white setae interspersed on basal third, brown on remaining surface (erect setae longer ventrally); antennomeres V-X with dark pubescence, short whitish setae interspersed, short, erect brown setae interspersed dorsally, and long, erect brown setae interspersed ventrally; antennomere XI with dark pubescence on dark area, whitish on apical area. Antennal formula based on length of antennomere III:

scape = 0.64; pedicel = 0.18; IV = 0.85;V = 0.40; VI = 0.40; VII = 0.36;VIII = 0.30; IX = 0.30; X = 0.24; XI = 0.33.

Thorax: Prothorax wider than long;sides with moderately short, conical tubercle about middle. Pronotum moderately coarsely, abundantly punctate; slightly tumid on sides of central area; with yellowish-brown pubescence not obscuring integument, slightly denser laterally and centrally, except almost glabrous sub-elliptical area placed on middle of central area; with long, erect dark setae interspersed, especially on sides, and a few long, erect yellowish-white setae interspersed on sides of anterior third. Sides of prothorax moderately coarsely and abundantly punctate; with abundant yellowish-brown pubescence not obscuring integument, and long, erect yellowish-white setae interspersed (erect setae appearing to ne whiter depending on light intensity). Prosternum moderately coarsely,sparsely punctate; with yellowish-brown pubescence not obscuring integument, and long, erect yellowish setae interspersed (appearing to be whiter depending on light intensity). Prosternal process with yellowish-white pubescence basally, gradually yellower toward apex; narrowest area 0.25 times procoxal width. Mesoventrite with sparse yellowish-white pubescence centrally, denser, yellowish-brown laterally; mesanepisternum with yellowish-brown pubescence, distinctly sparser centrally; mesepimeron with abundant yellowish-brown pubescence. Metanepisternum with yellowish-brown pubescence not obscuring integument, gradually sparser toward apex. Metaventrite moderately finely, sparsely punctate laterally and anteriorly, smooth on remaining surface; with yellowish-brown pubescence not obscuring integument laterally and close to meso- and metacoxal cavities, and yellowish-white pubescence not obscuring integument on remaining surface; with long, erect whitish setae interspersed. Scutellum with abundant yellowish-brown pubescence not obscuring integument (denser apically). Elytra: Coarsely, abundantly punctate on basal half, punctures gradually finer, slightly sparser toward apex; apex individually rounded; with large, irregular yellowish-white pubescent maculae throughout, except yellowish-brown pubescence on base; area between these maculae glabrous or with sparse yellowish-brown pubescence; with long, erect, abundant dark setae throughout. Legs: Femora with yellowish-white pubescence not obscuring integument on anterior ¾, denser, yellowish-brown on posterior quarter; with long, erect whitish setae interspersed. Protibiae with yellowish-white pubescence not obscuring integument dorsally and laterally, shorter, more abundant, yellowish-brown on anterior ¾ of ventral surface, dark brown on posterior quarter of ventral surface; dorsal and lateral surfaces with long, erect, abundant whitish setae. Meso- ant metatibiae with yellowish-white pubescence not obscuring integument, except dark brown pubescence on posterior quarter, and long, erect, abundant whitish setae interspersed; dorsal surface of mesotibiae not sulcate. Metatarsomere I slightly longer than II-III together.

Abdomen: Ventrites 1-4 with sparse yellowish-white pubescence,except dense yellowish-brown pubescence on apex of sides of ventrites 1-3 and nearly entire sides of ventrite 4.Ventrite 5 with minute yellowish-white pubescence, except slightly longer and yellower pubescence on sides and posterior quarter. All ventrites with long, erect, sparse yellowish-white setae interspersed, especially laterally. Apex of ventrite 5 truncate.

Male ( Figs. 4 View Figure 4 E-4F, 5A): Differ from females by the slightly longer antennae, 1.5 times elytral length, reaching elytral apex at posterior third of antennomere X, antennomere IV as long as III, and apex of ventrite 5 centrally emarginate.

Variations: Basal third of antennomere III brown, slightly lighter than remaining surface of the antennomere; basal third of dorsal surface and basal ⅔ of ventral surface of antennomere IV orangish brown; basal third of dorsal surface of antennomeres V-VIII and basal quarter of IX dark orangish-brown; ventral surface of antennomeres V-VIII almost entirely orangish brown; basal half of antennomere IX orangish brown. Elytra with abundant and irregular orangish-brown maculae. Pubescence on vertex and area behind upper eye lobes short, not obscuring integument; central area of vertex with brownish pubescence. Area of connection between eye lobes with two irregular rows of ommatidia. Prothorax as long as wide ( Fig. 5A View Figure 5 ). Prosternum almost smooth on anterior quarter; with sparse yellowish-white pubescence, and a few long, erect setae interspersed. Erect setae on prosternal process sparser and brownish. Scutellum from almost glabrous to with dense yellowish-brown pubescence obscuring integument.

Dimensions (mm) (holotype female/ paratypes male/ paratypesfemale): Totallength,7.20/5.10-7.25/5.90-6.15; prothoracic length, 1.30/0.90-1.20/1.00-1.05; anterior prothoracic width, 1.35/0.95-1.20/1.05-1.10; posteri- or prothoracic width, 1.40/1.00-1.25/1.10-1.15; maximum prothoracic width, 1.55/1.15-1.45/1.25-1.35; humeral width, 2.05/1.55-1.85/1.70-1.75; elytral length, 5.15/3.55-4.55/4.25-4.40.

Type material: Holotype female from GUATEMALA, El Progreso: Above Los Albores , 8000’, 07-08.V.1991, E. Giesbert leg. ( FSCA) . Paratypes – GUATEMALA, El Progreso: 2 ♂♂, 2 ♀♀, same data as holotype (2 ♂♂, 1 ♀, FSCA; 1 ♀, MZSP) ; 21 km N Estación de La Virgen , 8000’, 1 ♂, 03.VI.1991, J.E. Wappes leg. ( FSCA). Jalapa: 12 km E Mataquescuintla, 1 ♂, 12.VI.1991, J.E.Wappes leg. ( MZSP) .

Etymology: Latin, “similis” (similar, resembling); allusive to the resemblance to Eupogonius pubicollis Melzer, 1933 . Remarks: Eupogonius similis sp. nov. is similar to E. pubicollis Melzer, 1933 ( Fig. 4 View Figure 4 ), but differs especially by the mesotibiae not sulcate dorsally ( Fig. 5B View Figure 5 ), while it is distinctly sulcate in E. pubicollis ( Fig. 5D View Figure 5 ). Additionally, the pronotal pubescence is always less dense than in all specimens of E. pubicollis examined, and the antennomere XI is always dark brown. Eupogonius pubicollis Melzer, 1933 has some features very variable regardless of sex: antennomere XI pale ( Fig. 5F View Figure 5 ) or brown with only the apex of XI pale ( Fig. 5E View Figure 5 ); prothorax from distinctly slender and elongate ( Fig. 4G View Figure 4 ) to moderately short and wide. However, the other features, as for example the elytral pubescent pattern, bicolorous color of the erect setae on antennomere IV, are very constant. Eupogonius similis also has some features very variable, which includes the prothoracic shape. Therefore, the shape of the mesotibiae is the most reliable feature that allows these two species to be separated. Eupogonius similis is also similar in the general appearance to E. boteroi ( Fig. 1E View Figure 1 ). However, they differ as follows: upper eye lobes narrower, maximum width narrower than half the diameter of the apex of the scape in both sexes ( Fig. 5A View Figure 5 ); ommatidia ( Fig. 5A View Figure 5 ) smaller, finer than most punctures on the vertex; prothoracic lateral tubercles conical (subtriangular-shaped). In E. boteroi ( Fig. 1E View Figure 1 ), the upper eye lobes are wider, maximum width larger than half the diameter of the scape in both sexes, ommatidia larger, coarser than most punctures on the vertex, and the lateral tubercles of the prothorax have a subcylindrical projection apically.

CONFLICTS OF INTEREST: Author declare there are no conflicts of interest.

FUNDING INFORMATION: This project did not use any external financial support.

ACKNOWLEDGMENTS: I express my sincere thanks to Frederick W. Skillman-Jr. (FWSC) and Paul E. Skelley (FSCA) for sending specimens for study. Thanks also to Collaborative Invertebrate Laboratories at the Field Museum and Dr. Margaret Thayer for use of the imaging equipment (funded by the National Science Foundation grant EF-0531768/subcontract 144-439, the Grainger Foundation and The Field Museum, and to Stephanie Ware, Manager Morphology Labs, for taking the photos of the holotype and paratype of Eupogonius arizonensis . Finally, I thank Maureen Turcatel (FMNH) for her efforts to locate the types of E. arizonensis .