Crioprosopus Audinet-Serville, 1834

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 : 372-375

Crioprosopus Audinet-Serville, 1834

Type species: Crioprosopus servillei Audinet-Serville, 1834 (monobasic)

The following species are included in Crioprosopus : C. amoenus Jordan, 1895 , C. basileus ( Bates, 1880) comb. nov., C. championi ( Bates, 1885) comb. nov., C. chiriquiensis sp. nov., C. gaumeri Bates, 1892 , C. hondurensis sp. nov., C. iridescens White, 1853 comb. nov., C. nieti Chevrolat, 1857 , C. rimosus ( Buquet, 1840) comb. nov., C. saundersii White, 1853 , C. servillei Audinet-Serville, 1834 , C. tricolor ( Waterhouse, 1840) comb. nov., and C. wappesi sp. nov.

Crioprosopus Audinet-Serville, 1834:53 ; Dupont, 1838:xii, 53, pl. 244, fig. 15; Strauch, 1861:127; Thomson, 1864:208; Lacordaire, 1869:170; Bates, 1880:74; 1885:319; LeConte & Horn, 1883:299; Leng, 1886:60; Bradley, 1930:241; Linsley, 1962:101; Arnett, 1962:863, 881; Monné, 2012:56; Monné, 2013:730

Callona Waterhouse, 1840 , Syn. nov.

Callona Guerin-Méneville, 1844:213 ; Thomson, 1864:208; Linsley, 1962:100; Arnett, 1962:863, 881; Monné, 2012:56; Monné, 2013:722

Redescription. Form large, slightly tapering posteriorly, ventral surface pubescent. Head small, front short, impressed transversely (or obliquely downward from middle) with a deep pit on each side of the transverse impression; median line, extending onto vertex between eyes, vertex bicarinate and glabrate either sparsely or finely punctate; mandibles arcuate, acute at apices; palpi short, apical segment of labial and maxillary pair truncate to rounded at apices, impressed dorsally; genae small, subtruncate at apices; antennal tubercles broad, slightly to moderately elevated, apices obtusely angulate to acute; eyes moderately large, finely faceted, upper lobes small, well separated; antennae 11-segmented, slightly expanded externally, scape conical, finely punctate, segments from 4th densely clothed with very short, appressed, pale pubescence, basal segments with few short, erect hairs beneath, sparser dorsally, laterally carinate from segments 3–11, segments 3–5 slightly enlarged at apices, dorsal surface canaliculate (or longitudinally impressed) from apical ¼ to 2/3 of 3rd to 4th (more prominent in male and usually vague in female), 3rd segment longer than 1st, 11th slightly appendiculate. Pronotum broader than long (1.5–1.7 x as broad as long), posterior margin impressed, prosternum with intercoxal process narrower than coxal cavities, arcuate at apex, coxal cavities wide open behind; mesosternum with intercoxal process narrower than cavity, flat, usually not obviously projected below base of coxae, anterior face concave; sides densely clothed with pubescence; metasternum finely, densely punctate, densely pubescent, metepisternum broad. Scutellum acutely pointed apically. Elytra about 2.0–2.4 times longer than wide, distinctly margined laterally; apices broadly rounded or sinuately truncate to suture, exterior angle absent or obtuse if present. Legs slender; hind femora linear, shorter than body, finely punctate, sparsely pubescent; tibiae slender, apically with two short spines, internally with a row of short, suberect hairs; hind tarsi slender, 1st segment about as long as following two segments together, 3rd segment cleft to base. Abdomen is usually densely pubescent, 5th sternite subtruncate.

Remarks and diagnosis. The following Crioprosopus with metallic elytra, i.e., Crioprosopus basileus Bates, C. championi Bates , C. gaumeri Bates , and C. rimosa (Buquet) have antennal tubercles that are moderately elevated with apices that are usually acute. The pronotum is sexually dimorphic where the males have the following characteristics: (1) a dull, inflated, densely punctate disc that is arcuately impressed at base ( Figs. 55–63 ), the anterior half is usually with a broad impression in the middle ( Fig. 59 ), with a small pit on each side near apex of lateral angles ( Fig. 60 ), and the posterior half with oblique impressions on both sides of the median line ( Fig. 61 ), and a deep pit or impression on each side between the oblique impression and the lateral angles ( Fig.

62); (2) the dorsal median line of the disc is glabrate, anteriorly dilated at the apex ( Fig. 55 ), and the median line near the base is smooth, and impunctate ( Fig. 58 ); (3) side of the pronotum is obtusely subangulate to rounded or with a large subconical postmedian tubercle ( Fig. 57 ) and the surface is coarsely, and densely punctate. The pronotal disc of the female is shining, sparsely punctate above, and the sides are finely, densely punctate ( Fig. 16 ). The prosternum of the male is densely punctate, and the females have a prosternum that is finely punctate, and densely clothed with subdepressed hair. The scutellum is longer than wide ( Fig. 10 ). The elytra are usually glabrate (except in C. rimosus ). The abdominal segments 1–4 are narrowly glabrous at apices.

C. tricolor Waterhouse shares many of the above characters ( Figs. 64–81 ) of other metallic Crioprosopus except the dorsal canaliculation of antennal segments 3–4 is vague in both male and female, the scutellum is triangular, apical ½ – 2/3 flat ( Figs. 65, 70 ), and the ventral surface including the prosternum is clothed with pale, suberect hair. The pronotal disc of male C. tricolor is more convex and the anterior half lacks the broad impression in the middle ( Fig. 69 ). The C. tricolor females have pronotal discs that are glabrate with coarse punctures ( Figs. 64 , 74 ) compared to other metallic Crioprosopus females where the punctures are finer ( Fig. 78 ). The pronotal disc of male C. hondurensis sp. nov. is also convex and the anterior half lacks the broad impression in the middle as in C. tricolor male.

The morphological characteristics of C. servillei male and female are shown in Figs. 82–91 . Non-metallic male species, i.e., C. servillei Audinet-Serville ( divisus Bates ), nieti Chevrolat , and C. wappesi sp. nov., also lack the broad impression in the middle of the anterior half of the pronotal disc, and the median line is absent (or vague) or limited to the posterior half of the disc ( Fig. 82 ). The pronotal discs of non-metallic females, i.e., C. amoenus Jordan, C. chiriquiensis sp. nov., and C. servillei , are glabrous and very sparsely and finely punctate ( Fig. 87 ), and the sides are either glabrous or more sparsely punctate than the metallic species (except C. nieti female with coarsely punctate disc and sides).

Figures

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.

FIGURES 3 – 10. Crioprosopus Pro- and Mesosternal Intercoxal Process (3 – 6), and Scutellum (7 – 10): 3, 7: tricolor (female), 3 a: subtuberculiform mesosternal intercoxal process; 4, 8: amoenus (female), 4 a: prosternal intercoxal process arcuate; 5, 9: servillei (female), 5 a: mesosternal intercoxal process arcuate at apex; 6, 10: Crioprosopus sp. (male, Mex. Yucatan, Yokozonot), 6 a: mesosternal intercoxal process protuberant but not extending below 6 b, 6 b: plane of prosternal intercoxal process; 7, 8 and 9: short triangular scutellum, length scarcely longer than width; 10: elongated scutellum, longer than wide.

FIGURES 64 – 73. Morphological characteristics shared by Crioprosopus tricolor female (64 – 68), and male (69 – 73). 64: glabrate, coarsely punctured pronotal disc (female); 69: convex pronotal disc with anterior ½ lacking broad impression, and median line lacking transverse rhombiform dilation (male); 65, 70: triangular, flattened, arrowhead-shaped scutellum; 66, 71: very finely, densely punctate, and finely, rugulose elytral disc; 67, 72: deeply furrowed vertex; 68, 73: obovate, apically expanded palpi.

FIGURES 74 – 81. Morphological characteristics of females, Crioprosopus tricolor (74 – 77) compared to C. basileus (78 – 81). 74: punctures on pronotal disc coarse; 78: punctures on pronotal disc fine; 75: scutellum triangular, flat, emarginated medially at base; 79: scutellum elongate, impressed medially; 76: frons quadrate with median line deeply furrowed; 80: frons gently sloping from median line to antennal tubercles; 77: apical segments of labial and maxillary palpi obovate, expanded apically; 81: apical segments of labial and maxillary palpi oblong, narrowed apically.

FIGURES 82 – 91. Morphological characteristics of Crioprosopus servillei (divisus) (male): 82 – 86; and C. servillei (female): 87 – 91. 82, 87: Sexual dimorphism of pronotal disc. Characteristics shared by C. servillei male and female. 83, 88: Elytral maculae around scutellum and humeri; 84, 89: Short, triangular scutellum; 85, 90: Fine punctures and vague costae on elytra; 86, 91: Wrinkles on elytral disc around scutellum.