Baeocera takizawai Löbl, 1984

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 : 321

Baeocera takizawai Löbl, 1984

( Figs. 9 , 18 , 31, 69, 71)

Baeocera takizawai Löbl, 1984b: 190 ; Löbl, 2003: 62; Löbl, 2012a: 129.

Diagnosis. Antennomere XI well four times as long as III. Elytral punctuation sparse and coarse. Lateral portion of metaventrite sparsely and finely punctuate. Parameres asymmetrical; inner sac with sclerites and fine scale-like and denticulate structures.

Redescription. Body broad-oval, shining. Head, pronotum and elytra light reddish-brown; frons, clypeus, labrum, maxillary palpi, tarsi and antennomeres I–V yellowish-brown; antennomeres VI–XI dark yellowishbrown; tibiae and femora reddish-brown. Head, pronotum and elytra sparsely and finely pubescent.

Head with interocular distance about twice as eye width. Punctuation sparse and fine. Antennomeres I–VI with a few macrosetae, VII–XI covered with some macrosetae; VIII about 2.2 times as long as III; XI about 4.2 times as long as III (Fig. 31).

Pronotum wider than long, lateral keel distinct except near basal angles. Punctuation sparse and fine, as on head. Scutellum almost as long as wide, with exposed apex.

Elytra wider than long, widest at basal fourth, lateral margins gradually narrowed apically, minutely serrate at inner part of posterior margin. Elytral punctuation sparse and coarse. Sutural striae extending outwards along basal margin to form complete basal stria joined to lateral striae.

Propygidium sparsely and coarsely punctuate; pygidium sparsely and coarsely punctuate in basal half, finely punctuate from basal half to apex.

Hypomeron impunctate. Mesoventrite sparsely and finely punctuate, as pronotum. Lateral portion of metaventrite sparsely and finely punctuate. Mesepimeron about third to four times as long as wide. Mesocoxa almost twice as wide as interspace between mesocoxa; mesocoxal area narrow. Metepimeron almost as long as wide. Metacoxa about twice as wide as metacoxal process. Metanepisternum about third as long as wide. Ventrite I and V sparsely and finely punctuate.

Meso- and metafemora with microsculpture, sparsely and coarsely punctuate.

Male. Protarsomeres I–III enlarged. Aedeagus about 0.59 mm long; parameres asymmetrical ( Fig. 69 ); inner sac with sclerites and fine scale-like and denticulate structures ( Fig. 71 ).

Female. not examined

Measurements (n = 1). Length (PL+EL): 1.91 mm; width (PW, EW): 1.09 mm, 1.19 mm. PL/PW: 0.77; EL/ EW: 0.91. HW: 0.45 mm. ID: 0.20 mm.

Approximate ratio of each antennal length (width) as follows (n = 1); 2.2 (1.2): 1.8 (1.0): 1.0 (0.5): 1.3 (0.4): 1.5 (0.6): 1.1 (0.7): 2.2 (1.0): 1.8 (0.9): 2.6 (1.1): 2.6 (1.2): 4.2 (1.1).

Specimens examined. 13, Aira River, Iriomote Is., Okinawa Pref., F.I.T., 28. IV–5. V. 1999, S. Hori leg. (FU).

Distribution. Japan: Ryukyu; China; Taiwan

Figures

FIGURES 2 – 10. Habitus in dorsal view of the Japanese Baeocera. 2, B. frater; 3, B. myrmidon; 4, B. sordida; 5, B. abnormalis; 6, B. caliginosa; 7, B. curtula; 8, B. nakanei; 9, B. takizawai; 10, B. satana. Scales: 1.0 mm.

FIGURES 11 – 23. Habitus in lateral view of the Japanese Baeocera, and Baeoceroxidium micros (20, 21) and Baeocera falsata (22, 23). 11, B. frater; 12, B. myrmidon; 13, B. sordida; 14, B. abnormalis; 15, B. caliginosa; 16, B. curtula; 17, B. nakanei; 18, B. takizawai; 19, B. satana; 20, 22, dorsal view; 21, 23, lateral view. Scales: 1.0 mm.

FIGURES 68 – 75. Parameres (68, 69) and aedeagus (70 – 75), dorsal views (68 – 74) and lateral view (75). 68, 70, Baeocera nakanei; 69, 71, B. takizawai; 72, B. satana; 73, B. falsata; 74, 75, Baeoceroxidium micros. Scales: 0.2 mm.