Crusbatus Opitz

Opitz, Weston, 2014, Taxonomy of the New World Checkered Beetle GeneraAkonesisOpitz, New Genus, AntennosusOpitz, New Genus, CrusbatusOpitz, New Genus, andDiutiusOpitz, New Genus (Coleoptera: Cleridae: Peloniinae), The Coleopterists Bulletin 68 (3), pp. 411-428 : 420-426

Crusbatus Opitz , new genus

Type Species. Crusbatus spinosus Opitz , new species.

Diagnosis. Among the taxa of the monophyletic group under consideration, Crusbatus specimens may be distinguished by their oblong pronotal shape.

Description. Size: Length 9.0 mm; width 3.0 mm. Form ( Fig. 66 ): Oblong, rectangular (3X longer than broad). Vestiture: Dorsum profusely vested with pale pubescence; antenna

moderately setose; elytra with 1° and 2° setae. Head: Cranium subquadrate, frons wide, profusely indented with large setiferous punctures; gula large, subquadrate, sutures converging anteriorly, gula with 2 well-developed, setose postgular processes; labrum shallow, broadly incised; mandibles stout; maxilla well-developed, terminal palpomere securiform; labium well-developed, terminal palpomere securiform; eyes small, coarsely faceted, ocular notch large; antenna comprised of 10 antennomeres, capitate, capitulum long and slender, funicular antennomeres expanded, triangular, 6 th antennomere extraordinarily large ( Fig. 36 ). Thorax: Pronotum ( Fig. 33 ) oblong, disc slightly convex, shallowly punctate, side margins without tubercle, dorsolateral carina incomplete, posteriorly confluent with pronotal hem, prointercoxal process narrow, not expanded distally; pronotal projections long, approximating prointercoxal process; elytron with asetiferous punctures, epipleural fold wide and in ventral position, tapered to elytral apex, elytral anterior margin not carinate; profemora slightly swollen, tibial spur formula 1-2-2, tarsal pulvillar formula 3-3-3, ungues with basal denticle. Abdomen: Aedeagus ( Figs. 41, 42 ) shorter than length of abdomen, distal region of phallobase not lobed, phallobasic struts con- fluent with phallobasic apodeme, phallobasic rod absent; spicular fork well-developed ( Fig. 39 ), spicular apodemes fused, intraspicular plate long and linear.

Distribution. This monotypic genus is known only from Bolivia ( Fig. 60 ).

Etymology. The generic name is a Latin compound word derived from crus (= leg) and batus (= thorn-bush). It refers to the spinous condition of the front margin of the protibiae.

Crusbatus spinosus Opitz , new species ( Figs. 33, 36, 39–42 , 60 , 66 )

Holotype. ♂. BOLIVIA: Santa Cruz, Buena Vista vic, Flora & Fauna Hotel, 27-31-X-2002, coll. Morris / Wappes ( MNKM).

Paratypes. None

Diagnosis. The oblong pronotal shape will distinguish the members of this genus from specimens of the genera included in this study.

Description. Size: Length 9.0 mm; width 3.0 mm. Form: As in Fig. 66 . Integument: Cranium, pronotum, elytra, femora, pterothorax, and abdomen yellow; antennae bicolored, mostly black, but antennomeres 6, 8–10 partially yellow ( Fig. 36 ); upper portion of tibiae and tarsus black, lower portions yellow. Head: Eyes narrower than frons (40:30); capitular antennomeres moderately slender ( Fig. 36 ). Thorax: Pronotum oblong rectangular (100:120) ( Fig. 33 ), lateral tubercle absent; epipleural fold gradually narrowed to elytral apex, asetiferous punctures present; elytral disc with 1° and 2° setae. Abdomen: Male pygidium concave distally ( Fig. 40 ); aedeagus as in Figs. 41 and 42 ; inner facies of anterior region of tegmen spinous.

Variation. One specimen examined.

Natural History. The holotype was collected in October.

Distribution. Known only from Bolivia ( Fig. 60 ).

Etymology. The trivial name spinosus (= thorny) is a Latin adjective. I refer to spinous condition of the anterior margin of the protibiae.

Figures

Figs. 65–66. Habitus. 65) Antennosus impressocollis; 66) Crusbatus spinosus.

Figs. 30–42. Morphological structures. 30) Akonesis vittatis, pronotum; 31) Akonesis pictipennis, pronotum; 32) Diutus pallidus, pronotum; 33) Crusbatus spinosus, pronotum; 34) D. pallidus, antenna; 35) Diutus gallerucoides, antenna; 36) C. spinosus, antenna; 37) D. pallidus, tegmen; 38) D. pallidus, phallus; 39) C. spinosus, spicular fork; 40) C. spinosus, male, pygidium; 41) C. spinosus, tegmen; 42) C. spinosus, phallus.

Fig. 60. Distribution of Antennosus impressocollis and Crusbatus spinosus.