Carphobius caterinoi Cognato and Smith, 2023

Cognato, Anthony I. & Smith, Sarah M., 2023, Taxonomic Review of Carphobius Blackman, 1943 (Coleoptera: Curculionidae: Scolytinae) and a New Species from San Clemente Island, California, USA, The Coleopterists Bulletin 77 (2), pp. 255-263 : 259

Carphobius caterinoi Cognato and Smith , new species zoobank.org/ urn:lsid:zoobank.org:act:8AEDDD42-D7C0-45CB-87A1-58AADA2CF82A ( Figs. 6, 7, 10, 13 , 14 )

Diagnosis. This species is distinguished from other Carphobius by the acuminate, scale-like vestiture and the two or three small, acute spines on the first and third elytral declivity interstriae. Carphobius caterinoi is superficially similar to the monotypic Carphotoreus alni (Bright, 1972) except for the emarginate eye, concealed scutellar shield, and contiguous procoxae.

Description (Male Holotype). Body. Length 2.0 mm; 2.8 times as long as wide; vestiture of scale-like acuminate setae. Head. Frons with medial depression, vestiture of acuminate, scale-like setae, uniformly distributed from epistoma to vertex; epistomal margin with abundant, long, hair-like setae; eyes shallowly emarginate; antennal funicle of six antennomeres, club elongate-conical and flattened with three transverse sutures, club longer than scape and funicle combined, scape shorter then funicle.

Pronotum. Widest at base; anterior quarter of pronotum constricted; anterior margin with coarse asperities; patch of submarginal coarse asperities reaching summit but not extending to lateral margins; vestiture a mix of acuminate scale-like and smaller fine setae. Elytra. Scutellar shield not visible, each basal margin with eight coarse asperities; submarginal asperities restricted to interstriae 1 and 2; discal striae uniseriately punctured with fine, hair-like setae; interstriae 3 × wider than striae, with confused, scale-like, acuminate setae; declivity gradually sloping, occupying 50% of the elytra, posterolateral angles rounded, interstria 2 impressed, all interstriae with uniseriate and biseriate, scale-like, acuminate setae, and two widely spaced acute denticles on interstriae 1 and 3; striae obscure.

Legs. Pro-, meso-, and metacoxae contiguous; pro-, meso-, and metatibiae obliquely triangular, broadest at apical one-fourth; apical one-half of outer margin with five large, socketed denticles, their length longer than basal width.

Paratypes (males) similar to holotype with slight variation in size (mean = 2.0 mm, range 1.9–2.1 mm) and number (2 or 3) of elytral spines. Aedeagus of one paratype examined ( Fig. 14 ): aedeagal body rectangular and distally narrowed, apophyses length 2 × as long as aedeagal body, tegmen C-shaped (open dorsally), manubrium absent, flagellum presence uncertain, spiculum gastrale rod apically forked.

Type Specimens. Holotype, male, labeled: USA: California, Los Angeles Co., 32.8813°N, 118.4445°W, San Clemente Isl [and], Upper Thirst C [an]y[o]n, vi.15.2008, Caterino & Chatzimanolis. Blue second label: CA BEETLE PROJ, CBP0079193 ( SBMNH) . Paratypes, 2 males, labeled: USA: California, Los Angeles Co., San Clemente Island, Lat : 32.8776 Lon : −118.4351, 13April 2019, collect- ed from a steep, forested canyon via beat sheet from Quercus tomentella, C. H. Richart Coll. SBBG-SCL- TIC-001193 (1 SBMNH, 1 Michigan State University [ MSUC]) ; 1 male (dissected) glued to card, genitalia in vial, same locality data and second label: DNA voucher, SMS400, A. I. Cognato 2022 (1 MSUC) .

Etymology. Named in honor of Dr. Michael Caterino who began and directed the California Beetle Project at the Santa Barbara Museum of Natural History (2001–2014).

Figures

Figs. 2–13. Carphobius species. C. arizonicus, male (USNMENT_01595074); 2) Habitus, dorsal view; 3) Habitus, lateral view; 8) Declivital view; 11) Frontal view. C. arizonicus, female (USNMENT_01595075): 4) Habitus, dorsal view; 5) Habitus, lateral view; 9) Declivital view; 12) Frontal view. C. caterinoi, new species, male (holotype; CBP0079193): 6) Habitus, dorsal view; 7) Habitus, lateral view; 10) Declivital view; 13) Frontal view.

Fig. 14. Carphobius caterinoi, new species, paratype male, genitalia and spiculum gastrale (rotated 180 degrees).