Callistochroma viridipurpurea Eya

Eya, Bryan K., 2015, Revision of the Genus Crioprosopus Audinet-Serville, and description of three new genera of Trachyderini (Coleoptera: Cerambycidae: Cerambycinae), Zootaxa 3914 (4), pp. 351-405 : 370-372

Callistochroma viridipurpurea Eya , sp. nov.

( Figs. 51–54 )

Description. Male: Length 31 mm. Form large; integument orange-reddish to brown, pronotum with anterior and posterior margin, black, sides (proepisternum) with wide, transverse, black vitta from apex to base, disc orangereddish with narrow, black vitta in middle interrupted at posterior ½, head, scape, prosternal process, mesosternum, scutellum, coxae, mid- and hind legs, black, and foreleg and remainder of antennae reddish-brown to black, elytra glabrate, reddish with metallic greenish reflection; pubescence sparse, long, erect around upper eye lobe, sides and base of pronotum, middle of metasternum and abdominal segments. Head with pubescence sparse, erect; palpi short, apical segment of labial and maxillary pair subtruncate, impressed dorsally; antennae extending 4.5 segments beyond elytra, scape with dorsum deeply impressed over basal 2/3, sides of impression carinate, segments laterally carinate from apex of 3rd–11th, 3rd segment longer than first, 4th shorter than 3rd and longer than 1st, 5th longer than 3rd, 6th longer than 5th, 7th longer than 6th, 8th longer than 7th, 9th and 10th shorter than 8th and subequal to 7th, 11th longest, appendiculate at apical ½. Pronotum with small, obtuse tubercles at middle of each side, lateral margin of apical ½ rounded; disc with sides of apical 2/3 densely, confluently punctate, at middle from apex to base with urceolate, glabrate area with sparse, shallow punctures; prosternum narrow, each side above coxae with an orange, transverse, deeply, confluently punctate area, pubescence sparse, short, erect; proepisternum densely punctate. Elytra about 2.5 times longer than broad; disc glabrate, finely punctate on basal ½, sparsely pubescent near apices; apices obliquely rounded, exterior angles dentate; lateral margin distinct, terminating at apex of exterior angle. Legs not attaining apex of elytra. Abdomen finely pubescent at sides, segments narrowly darker at apices; fifth sternite subtruncate at apex, shallowly emarginate medially.

Female: Length 28–31 mm. Form large; integument orange-reddish to brown, pronotal disc orange-reddish with anterior and posterior margins, and broad “T-shaped” vitta in middle extending from apex to base, black with metallic bluish reflection, sides of pronotum, proepisternum, and prosternum also black with bluish reflection; head, antennae, mesosternum, scutellum, coxae, apex of femora, tibiae and tarsi dark reddish-brown to black, and remainder of femora reddish-brown, elytra similar to male. Head with antennae extending 1.5–2 segments beyond elytra, 3rd segment longer than 1st, 4th subequal to 1st, each segment from 5th–9th subequal to 3rd, 10th shorter than 9th, 11th longest, appendiculate at apical ¼. Pronotum with small tubercle on each side at middle, lateral margin of apical ½ obtusely tuberculate with apex of tubercle impressed; disc glabrate, sparsely, punctate; prosternum coarsely, sparsely punctate in middle, striate-punctate on apical ½, pubescence short, erect; proepisternum sparsely punctate. Elytra with disc glabrate, finely, sparsely punctate from base to apex.

Etymology. The name refers to the reddish color with metallic greenish reflection of the elytra.

Type. Holotype, male, Colombia: Dept. Valle, Lago Calima, 1250 m, 5 mi below dam, tropical moist forest, 24 April 1976, R. Wilkerson ( ACMT); Paratype, Colombia: Dept. de Valle, Calima Valley, 10 August 1983 (1 female, JCEC); Valle, 45 km W. Buga, 1200 m, 2 April 1992, C. Farrell (1 female, LGBC). Holotype deposited at USNM per request of J. Wappes.

Note. This species resembles Callistochroma viridipennis (Latreille) in overall appearance; however, C. viridipurpurea has more obliquely angulate elytral apices with the sutural angle rounded. The elytra are metallic with greenish reflection as in C. viridipennis ; however, the fine punctures on the disc are more distinct and visible in C. viridipurpurea . The male C. viridipurpurea have darker femora, and the pronotal disc is orange with a dark, narrow, medial vitta extending into the basal ½. The proepisternum has a wide black vitta on both sides, which extends from apex to base. The apical and basal margins of the pronotal disc are not impressed in the middle as in the male C. viridipennis from Ecuador. Also, the punctures confined to the anterior angle on the pronotal disc found in the male ( Fig. 11 a) are finer in C.viridipurpurea compared to C. viridipennis . The female C. viridipurpurea have femora that are reddish-brown with darker apices compared to the C. viridipennis holotype female with femora that are more uniformly reddish-brown, see photo (Bezark, 2014, id: 6144). The pronotal disc of the female C. viridipurpurea is orange-reddish with broad “T-shaped” black vitta with metallic bluish reflection extending from apex to base.

Figures

FIGURES 41 – 52. Dorsal and Lateral view of Callistochroma (cont.). 41, 42: Callistochroma lampros (female, Panama, Arraijan); 43, 44: Callistochroma rutilans (male, Panama, Canal Zone); 45, 46: Callistochroma rutilans (female, Costa Rica, Cartago); 47, 48: Callistochroma rutilans (female, Panama, Chiriqui); 49, 50: Callistochroma viridipennis (male, Ecuador, Esmeralda); 51, 52: Callistochroma viridipurpurea (male, Colombia, Valle).

FIGURES 53 – 63. Dorsal and Lateral view of Callistochroma (cont.). 53, 54: Callistochroma viridipurpurea (female, Colomibia, Valle). Pronotal Structure of Crioprosopus (FIGURES 55 – 63). Crioprosopus basileus (male, Mex., Oaxaca, Ocotlan), 55: anterior dilation of median line; 56: transverse rhombiform dilation of median line; 57: subconical post-median tubercle (or lateral angle); 58: posterior ½ of median line with smooth impunctate area. Crioprosopus basileus (praestans) (male, Mex., Guerrero, Mochtitlan), 59: anterior ½ with broad impression in middle; 60: small pit near apex of lateral angle; 61: posterior ½ with oblique impression on either side of median line; 62: deep pit (or impression) on each side of median line between oblique impression (61) and lateral angle; 63: medial, short axial carina.

FIGURES 11 – 18. Comparison of structural characters of Callistochroma and Crioprosopus: Callistochroma lampros: 11: prothoracic sculpture (male), 11 a: punctures confined to anterior angle; 12: prothoracic sculpture (female), 12 a: side of apical half of prothroax obtusely tuberculate; 13: prosternal and mesosternal intercoxal process, 13 a: mesosternal process obtusely tuberculate, extending below 13 b, 13 b: plane of prosternal intercoxal process; 14: elytral apices obliquely angulate, 14 a: outer armature. Crioprosopus basileus: 15: prothoracic sculpture (male), 15 a: disc densely punctate throughout; 16: prothoracic sculpture (female); 17: prosternal and mesosternal intercoxal process; 18: elytral apices rounded or subtruncate.