Baeocera Erichson, 1845

Ogawa, Ryo & Löbl, Ivan, 2013, A revision of the genus Baeocera in Japan, with a new genus of the tribe Scaphisomatini (Coleoptera, Staphylinidae, Scaphidiinae), Zootaxa 3652 (3), pp. 301-326 : 302

Baeocera Erichson, 1845

Baeocera Erichson, 1845: 4 . (Type species: Baeocera falsata Achard, 1920 , see Löbl, 1977: 101, Melville, 1982 (Opinion 1221): 175).

Cyparella Achard, 1924: 28 . (Type species: Scaphisoma rufoguttatum Fairmaire, 1898 ). Synonymized by Löbl, 1987.

Eubaeocera Cornell, 1967: 2 . (Type species: Baeocera abdominalis Casey, 1900 ). Synonymized under Sciatrophes by Löbl, 1977.

Sciatrophes Blackburn, 1903: 100 . (Type species: Sciatrophes latens Blackburn, 1903 ). Synonymized by Löbl, 1978.

Amaloceroschema (as subgenus of Baeocera ) Löbl, 1967: 1. (Type species: Baeocera freudei Löbl, 1967 ). New synonymy.

Diagnosis. Maxillary palpomere IV aciculate ( Fig. 37 ). Antennomeres III and IV elongate; VII to X asymmetrical. Mandible unidentate ( Fig. 36 ); mola with brush. Galea narrow (longer than wide); brush apical and paniculate ( Fig. 37 ). Surface of mentum setose ( Fig. 39 ). Anterior margin of pronotum with a bead ( Fig. 1 ). Hypomeron without fovea. Prothoracic corbiculum present ( Fig. 78 ). Mesocoxal lines present on metaventrite ( Fig. 1 ). Metendosternum with stem present. Secondary lines of mesoventrite absent. Abdominal ventrite I without metacoxal bead. Profemoral ctenidium present ( Fig. 79 ). Mesotibia with 2 ventral spines. Metacoxae separated. Empodium unisetose.

Comments. The shape of the ovipositors is useful for both the definition of taxa and as an indication of relationships. Two types of spermatheca are found in examined Japanese species: a single one in the Baeocera curtula , B. abnormalis , and B. frater groups, and in Baeoceroxidium micros ( Figs. 58, 59 ), two in the Baeocera monstrosa and B. satana groups ( Figs. 60, 61 ).

A patch of spines is present on the inner surface of elytra ( Fig. 82 ), and is assumed to be associated with wing folding (Nomura 1997).

Figures

FIGURE 1. Terminology. Model: Baeocera nakanei.

FIGURES 35 – 40. Mouthparts of Baeocera falsata. 35, Labrum; 36, mandible; 37, maxilla; 38, labium; 39, mentum; 40, submentum. Scales: 0.05 mm.

FIGURES 76 – 83. SEM photographs. 76, Meso- and metaventrites; 77, labium and maxillae in ventral view (left) and mandible in dorsal view (right); 78, prothoracic corbiculum; 79, ctenidium of profemur; 80, 81, punctuations of elytra; 82, inner surface of elytra; 83, intersegmental membrane. 76 (left), Baeocera caliginosa; 76 and 77 (right), 78, 81, 83, B. nakanei; 77 (left), 82, B. abnormalis; 79, 80, B. sordida.

FIGURES 58 – 61. Spermathecae and the apertures. 58, Baeocera caliginosa; 59, B. abnormalis; 60, B. nakanei; 61, B. satana. Allows: opening portions of spermathecae on the vagina. Scales: 0.1 mm.