Euphoria canaliculata Orozco, 2012

Orozco, Jesús, 2012, Monographic Revision of the American Genus Euphoria Burmeister, 1842 (Coleoptera: Scarabaeidae: Cetoniinae), The Coleopterists Bulletin (mo 11) 66, pp. 1-182 : 88-89

Euphoria canaliculata Orozco , new species

(Appendix 4: Fig. 50 )

Type Material (33). Holotype male labeled “México-México/ Ixtapan del Oro 10.93/ Ing. S. Pokorny lgt.” and with my red holotype label ( UNSM) . Allotype female as holotype and with my yellow allotype label ( UNSM) . Paratypes (31) with the following data: as holotype (2 JOAC, 2 UMMZ, 2 DJCC); “Tuxpan Mich./ MEXICO / VII-12-1963 // F. D. Parker / L.A.Stange / Collectors” (3 CMNC, 1 JOAC); “Tuxpan Mich./ MEXICO / VII-12-1963 // F. D. Parker / L.A.Stange / Collectors// n. sp. 3/ DET/ A. R. Hardy 19” (1 CMNC); “Tuxpan Mich./ MEXICO / VII-12- 1963 // F. D. Parker / L.A.Stange / Collectors// EUPHORIA / N. SP. #3/ Det. Hardy ” (1 JOAC); “Tuxpan Mich./ MEXICO / VII-12-1963 // F. D. Parker / L.A.Stange / Collectors// Dr. Alan R. Hardy/ 2005 donation to/ California Academy/ of Sciences// EUPHORIA / N. SP. #3/ Det. Hardy ” (1 CASC); “Tuxpan Mich./ MEXICO / VII-12-1963 // F. D. Parker / L.A.Stange / Collectors // Dr. Alan R. Hardy / 2005 donation to/ California Academy / of Sciences ” (3 CASC); “Tuxpan Mich./ MEXICO / VII-12-1963 // F. D. Parker / L.A.Stange / Collectors// n. sp. #3/ det. D. Carlson ” (2 CMNC); “ MEXICO / Michoacán / TUXPAN/ Kohlmann Leg./ Coll. Martinez / Jun 9 75// H. & A. HOWDEN/ COLLECTION/ Ex A. Martinez coll.” (2 CMNC); “ 5 mi. N Tuxpan / Micho. Mexico/ VII.16.53 5500ft // STEPHANUCHA / BISPINIS/ BATES / det. B.C. Ratcliffe 1986” (1 BCRC); “ MEXICO, Mich., Hwy./ 15,4mi SE Tuxpan/ 6500’ 16Aug.1982 CW&/ L.O’ Brien & G. Wibmer ” (1 WBWC); “México- México/ Ixtapan del Oro 9.07/ Ing. S. Pokorny lgt// BMNH {E}/ 2010-30// Euphoria / sp. nov. S. Pokorny det. 2010” (8 BMNH); “Tuxpan, Mich-/ oacan, Mex./ 11 July 1951 // H. E. Evans / collector” (1 USNM). All paratypes with my yellow paratype label .

Description. Holotype male. Length 8.4 mm width; 4.5 mm. Color: Dorsal surface shiny. Pronotum black, elytra black with yellowish brown markings; markings sparse, irregular in shape. Ventral surface including legs, black; abdominal sternites light brown at middle. Head: Frons moderately raised at middle, densely punctate; punctures round, deep, moderate, confluent laterally, moderately setose; setae, yellowish, short and moderate. Clypeus subrectangular, sides not raised; surface densely punctate; punctures round, deep, strongly confluent; apex weakly reflexed, weakly sinuate. Antennal club shorter than stem. Pronotum: Surface densely punctate, anterolateral areas with abundant rugae; punctures round and lunulate, moderate in size, densely setose; setae moderate in size, yellowish. A small, impunctate area either side of midline on disc. Midline weakly raised, impunctate, glabrous. Base in front of scutellum impunctate, weakly emarginate. Scutellum densely punctate at basal corners, punctures irregular, moderate in size, setose. Elytra: Surface moderately punctate, punctures small and moderate; apical declivity and lateral margins strongly rugose. Elytral striae consisting of 2 rows of double grooves or geminate punctures surrounding a row of lunulate punctures; punctures on striae with short and moderately long setae. Pygidium: Surface concentrically striate; striae dense, mostly discontinuous at base, continuous at apex, moderately setose, setae short to long. Apex evenly rounded. Legs: Protibiae slender, teeth equidistant. Legs densely setose; setae long, yellowish. Meso- and metatibial carinae strongly developed. Protarsi longer than protibiae. Metatibial spurs slender, apices sharp. Venter: Mesometasternal process strongly compressed laterally, weakly expanded laterally, apex evenly rounded, extended to same level as mesocoxae. Mesepimera, metasternum, and metacoxae densely setose, setae as on legs; metepimera weakly setose. Metasternum rugose, densely setose laterally, weakly punctate and glabrous, median sulcus moderately impressed. Abdominal sternites with moderately impressed, longitudinal depression. Abdomen in lateral view moderately concave.

Allotype. Female. Similar to holotype except for the following: Length 9.7 mm; width 5.6 mm Legs: Protarsi shorter than protibiae. Internal metatibial spur lanceolate, apex rounded. Venter: Abdomen in lateral view strongly convex.

Variation. Paratypes (2 males, 14 females) similar to the holotype and allotype except in the following: Length 8.4–10.1 mm; width 4.5–5.7 mm. Color: Elytral markings light yellow to yellowish brown, markings mostly on basal half. Venter: Mesometasternal process at same level or extending anteriorly slightly beyond mesocoxae. Male genitalia: Parameres as in Fig. 50c .

Diagnosis. This species is separated from the other species in the group based on the antennal club subequal in size (shorter than the stem in both sexes), scutellum densely punctate at base, strongly compressed mesometasternal process, protarsi sexually dimorphic in length (longer than protibiae in males, shorter in females), and form of the parameres. Euphoria diminuta , a related new species, is separated based on the sexually dimorphic length of the antennal club (longer in males than in females), scutellum impunctate, mesometasternal weakly compressed laterally, and form of the parameres.

Natural History. The only ecological data associated with the few specimens known are the species being collected at 1,676 m.

Temporal Distribution. June (2), July (10), August (1), October (10) ( Fig. 50e ).

Geographic Distribution. Known only from Michoacán, Mexico ( Fig. 50f ).

Etymology. From the Latin canaliculatus meaning “grooved”, referring to the deep striation present on the elytra.

Figures

Fig. 50. Euphoria canaliculata. a) Habitus of paratype, b) Head of paratype, c) Parameres of paratype, d) Color variation in paratype, e) Temporal distribution, f) Geographic distribution in Mexico.