Euphoria canescens ( Gory and Percheron, 1833 )

Orozco, Jesús, 2012, Monographic Revision of the American Genus Euphoria Burmeister, 1842 (Coleoptera: Scarabaeidae: Cetoniinae), The Coleopterists Bulletin (mo 11) 66, pp. 1-182 : 19

Euphoria canescens ( Gory and Percheron, 1833)

(Appendix 4: Fig. 3 )

Cetonia canescens Gory and Percheron 1833: 64 , 277. Original combination.

Lectotype at MHNG, here designated. One paralectotype at MHNG, examined.

Euphoria solidula Casey 1915: 329 . Synonym.

Holotype at USNM, examined.

Description (n = 159). Length 8.7–11.7 mm; width 5.0–7.0 mm. Color: Surface shiny, head black. Pronotum black to brown, lateral margin with transverse, whitish or bluish, cretaceous markings. Elytra entirely reddish brown, or black with red markings on anterior half; with elongate, whitish, transverse, cretaceous bands extending from lateral margin; markings distributed beyond humeral emargination. Pygidium variably covered by cretaceous layer. Abdominal sternites with cretaceous band on anterolateral margin. Head: Frons flat, strongly strigose, glabrous to densely setose; setae moderate to long, whitish to yellowish. Clypeus elongated, sides strongly convergent, apex pointed, not raised, surface strongly strigose, glabrous to sparsely setose; setae yellowish to whitish, short to long. Antennal club shorter than stem, subequal in length in both sexes. Pronotum: Surface moderately to densely punctate; punctures lunulate, small to moderate in size, denser and confluent towards anterior margin and sides, sparsely to densely setose; setae short to long, yellowish to whitish. Sides evenly rounded. Base in front of scutellum moderately to strongly emarginate. Scutellum longer than wide, impunctate. Elytra: Surface moderately densely punctate, striae bearing 3 rows of small to moderate-sized, lunulate punctures; first striae frequently with grooves and geminate punctures; costae weakly to well defined. Posterior half of sutural costa raised in lateral view. Surface glabrous to moderately densely setose; setae short to long, whitish to yellowish. Pygidium: Surface subconcentrically striate, striae discontinuous, moderately densely setose, setae short to moderate. Legs: Protibial teeth equidistant, frequently worn down, basal tooth obsolete to subobsolete in both sexes. Metatibial carina weakly developed. Venter: Mesometasternal process extending anteriorly well beyond mesocoxae, glabrous on mesosternal lobe, apex variably rounded. Mesepimera, metasternum, and metacoxae setose, setae as on legs. Metasternum rugose, setose laterally, glabrous and impunctate at middle. Median sulcus vaguely to weakly evident. Metatibiae with weakly developed carina. Abdominal sternites densely setose laterally, sparsely setose medially, setae on sternites 3–5 exclusively on anterolateral margin, setae on segments 6–7 on lateral margin; setae as on legs. Male genitalia: Parameres as in Fig. 3c .

Diagnosis. Euphoria canescens is easily separated from other species in the group based on the elongate, pointed clypeus.

Taxonomic History. Gory and Percheron (1833) described the species from a Mexican specimen. Casey (1915) described E. solidula based on a large male specimen from Guatemala with a slightly different pattern of cretaceous markings. Hardy (2001) synonymized E. solidula with E. canescens .

Natural History. Adults have been collected on flowers of Zaluzania pringlei Grenm. (Asteraceae) . Deloya (1988) recorded the species on flowers of Croton sp. (Euphorbiaceae) and Bursera sp. (Burseraceae) .

The larvae and the adults are commonly found in debris piles of A. mexicana . Dugès (1887) recorded the larva from debris piles of Atta cephalotes L. in Guanajuato, Mexico, but according to Navarrete-Heredia (2001), this is incorrect since this ant species does not occur in that state. Dugès (1887) described the larva, but his description is too general for taxonomic and identification purposes.

Temporal Distribution. April (1), May (1), June (8), July (7), August (2), September (11), October (72), November (19), December (4) ( Fig. 3e ).

Geographic Distribution. Found from Arizona, USA through Honduras ( Fig. 3f ). Morón et al. (1997) recorded the species from Aguascalientes, Mexico.

Specimens Examined (159). Type material: Euphoria canescens ( Gory and Percheron, 1833) ; lectotype male at MHNG here designated labeled “Coll. Melly // canescens/ G. et P. B./ Mexico ” and my lectotype label; paralectotype female at MNHG labeled “Coll. Melly ” and my paralectotype label. Euphoria solidula Casey, 1915 ; holotype at USNM labeled “ Nebaj / Quiché / Guatemala // CASEY/ bequest/ 1925// TYPE USNM/ 48688// solidula/ Csy”. Other material: BELIZE (1): NO DATA (1). EL SALVADOR (2): AHUACHAPÁN: San Francisco Menéndez (1); NO DATA: “C. America El Salvador” (1). GUATEMALA (7): NO DATA: “Guatemala” (7). HONDURAS (21): COMAYAGUA: El Taladro (8), Siguatepeque (1); LA PAZ: La Paz (9); YORO: Yoro (3). MEXICO (114): DURANGO: Durango (1); ESTADO DE MÉXICO: Tejupilco (6), Temascaltepec (1); GUANAJUATO: Guanajuato (1), León (1), Mendoza (1); GUERRERO: Chichihualco (1), Tasco (2), Tixtla (1); HIDALGO: El Venado (2), Zimapán (3); JALISCO: Ajijíc (2), Chapala (1), Guadalajara (1); MORELOS: Cuernavaca (3), Tepoztlán (1), Tijalpa (2), Yautepec (1); NAYARIT: Compostela (5), Jala (1), Volcán Céboruco (1); NUEVO LEÓN: Monterrey (1); OAXACA: Huajuapan (15), Huapanapan (1), Mitla (1), San Juan Juquila Mixes (1), Santiago Cacoloxtepec (1), Santiago Chazumba (11), Tamazulapán (1); PUEBLA: Acatepec (1), Calipán (1), Petlalcingo (7), Tehuacán (2), Tlaltenango (2), Zapotitlán (4); SINALOA: Mazatlán (2); SONORA: Alamos (18), Arizpe (1); VERACRUZ: Huatusco (2), Veracruz (1); NO DATA: “Mexico” (3). USA (2): ARIZONA. Santa Cruz Co.: Atascosa Mountains (2). NO DATA (5): “Almo” (1), “Mat” (1), “Museum” (1), “Tep.” (1), no data: (1). SUSPECT RECORDS (4): “Venezuela” (4).

Figures

Fig. 3. Euphoria canescens. a) Habitus, b) Head, c) Parameres, d) Color variation, e) Temporal distribution, f) Geographic distribution in Belize, El Salvador, Guatemala, Honduras, Mexico, and the United States; open square indicates country record only.