Euphoria quadricollis Bates, 1889

Orozco, Jesús, 2012, Monographic Revision of the American Genus Euphoria Burmeister, 1842 (Coleoptera: Scarabaeidae: Cetoniinae), The Coleopterists Bulletin (mo 11) 66, pp. 1-182 : 83-84

Euphoria quadricollis Bates, 1889

(Appendix 4: Fig. 47 )

Euphoria quadricollis Bates 1889: 371 . Original combination.

Lectotype at BMNH designated by Hardy (2001), not examined. Other syntypes not found; no paralectotypes designated.

Euphoria arizonica Schaeffer 1907: 73 . Synonym.

Lectotype at USNM designated by Hardy (2001), examined. Other syntypes not found; no paralectotypes designated.

Description (n = 119). Length 9.7–13.4 mm; width 5.3–7.7 mm. Color: Dorsal surface yellowish brown to light brown, tomentous in males, shiny in females. Pronotum with 2 longitudinal, regular, black vittae on each side of midline and 1 small, dark, semicircular, anterolateral mark on each side; vittae rarely covering midline. Elytra with black, irregular markings; markings frequently sparse in males, dense in females. Head: Frons slightly raised at middle, densely punctate; punctures deep, moderate in size, occasionally confluent, moderately densely to densely setose; setae whitish to yellowish, moderate to long. Clypeus subtrapezoidal, punctation and setation as on frons, laterally expanded anteriorly in dorsal view, lateral margins weakly to moderately raised; apex vaguely to weakly reflexed, moderately sinuate. Antennal club longer than stem in males, shorter in females. Pronotum: Surface moderately densely to densely punctate, anterolateral margins with sparse rugae; punctures lunulate, small to moderate, moderately densely to densely setose; setae short to moderate, whitish to yellowish. Sides weakly to moderately angulate. Base rounded to weakly emarginate. Scutellum impunctate. Elytra: Surface sparsely to moderately densely punctate, punctures small to moderate; striae consisting of 3 irregular rows of lunulate punctures, irregular punctures, and short grooves; punctures frequently reduced in size and density in males, moderately densely setose; setae short to moderate, whitish to yellowish. Pygidium: Surface subconcentrically striate; striae dense, discontinuous, moderately densely to densely setose; setae short to moderate, yellowish to whitish. Legs: Protibiae slender in males, robust in females, basal tooth frequently subobsolete in males. Meso- and metatibial carinae moderately to strongly developed in females. Metatarsi longer than metatibiae in males, shorter or as long in females. Venter: Mesometasternal process moderately compressed laterally, extending anteriorly to same level as mesocoxae or slightly beyond, apex variably rounded to truncate. Mesepimera, metasternum, metepimera, and metacoxae setose, setae as on legs. Metasternum rugose, moderately to densely setose laterally, weakly to moderately punctate and setose at middle, median sulcus strongly impressed. Abdomen in lateral view flat to weakly convex in males, moderately to strongly convex in females. Male genitalia: Parameres as in Fig. 47c .

Diagnosis. This species is separated from other species in the group by the following combination of characters: dorsum sexually dimorphic (tomentous in males, shiny in females); clypeus subtrapezoidal; pronotal base rounded to weakly emarginate; scutellum impunctate; and form of the parameres. The protibial teeth are frequently entirely abraded in males.

Taxonomic History. Bates (1889) described the species based on two males from Durango, Mexico. Schaeffer (1907) described E. arizonica based on six additional males from Arizona, USA and compared it with E. fulveola , apparently unaware of the similarities with E. quadricollis . Hardy (2001) placed E. arizonica in synonymy with E. quadricollis .

Natural History. Adults have been collected on B. salicifolia , B. sarothroides , Brickellia californica (Torr. and Gray) (Asteraceae) , Quercus emoryi Torr. , Q. hypoleucoides , Argemone sp. , and Condalia lycioides (Gray) . The species has been found in chaparral habitats, and it has been collected at elevations up to 2,500 m.

Temporal Distribution. July (95), August (10), September (3) ( Fig. 47e ).

Geographic Distribution. K n o w n f r o m Chihuahua and Durango, Mexico and Arizona, USA ( Fig. 47f ).

Specimens Examined (119). Type material. Euphoria arizonica Schaeffer, 1907 ; lectotype male at USNM labeled “TYPE// Palmerly/ Cochise Co. / July Ariz.// BROOKLYN/ MUSEUM/ COLL. 1929// Catal No./ 1351// Euphoria / arizonica/ Schaef.// Cotype/ 42588/ U.SN.M.// LECTOTYPE / Euphoria / arizonica schf./ By A.R. Hardy 1979”. Other material. MEXICO (8): CHIHUAHUA: Matachic (3); DURANGO: Durango (2), Nombre de Dios (3). USA (109): ARIZONA: Cochise Co. : Chiricahua Mountains (1), Fort Huachuca (1), Huachuca Mountains (42), Miller Canyon (1), Palmerly (2); Pima Co. : Baboquivari Mountains (2), Box Canyon (4); Santa Cruz Co.: Amado (16), Patagonia (1), Ruby (9), Santa Rita Mountains (22), Sycamore Canyon (1), Tumacacori Mountains (7). NO DATA (1): “San Jose” (1).

Figures

Fig. 47. Euphoria quadricollis. a) Habitus of male, b) Head, c) Parameres, d) Female, e) Temporal distribution, f) Geographic distribution in Mexico and the United States.