Baiocis pernanulus (Schedl)

Beaver, Roger A., 2018, A review of the genus Baiocis Browne, 1962 (Coleoptera: Curculionidae: Platypodinae), with new species, new synonymy and a key to males, Zootaxa 4434 (3), pp. 481-501 : 496-497

Baiocis pernanulus (Schedl)

( Figs 13, 16 , 28 )

Crossotarsus pernanulus Schedl, 1935: 482 .

Platypus pernanulus ( Schedl): Schedl 1939 : 336.

Baiocis pernanulus (Schedl) : Browne 1962: 651.

Platypus annularis Schedl, 1975: 379 . syn. n.

Baiocis solomonicus Browne, 1986: 335 . syn. n.

Taxonomy: The senior author has compared the male lectotype and female allotype of B. pernanulus (NMW) with specimens of both sexes in RAB from Australia, Brunei, the Philippines, and West Malaysia, and these with the male holotype and a male paratype of Platypus annularis (NMW) from Papua New Guinea, and the male holotype and a male paratype of B. solomonicus (BMNH) from the Solomon Islands. They represent the same species, which is rather variable in size (1.9‒2.4 mm long), but shows no morphological characters which would allow division into distinct species. Specimens in RAB and other collections which Browne identified as B. pernanulus are in fact the species described above as B. orientalis . The female of Platypus annularis described by Schedl (1975), is not conspecific with the male, and belongs in the genus Crossotarsus Chapuis ( Roberts, 1989) .

New records: BRUNEI, Temburong, nr K. Belalong Field Stud. Centre, 4°33' N, 115°09' E, 250 m, 21.ii.1992 (R.A. Beaver) (1 male) ; as previous except: 150 m, 29.ii.1992 (1 male). CHINA, S. Yunnan, (Xishuangbanna) 23 km NW Jinghong, vic. Na Ban village ( NNNR), 22°10’N, 100°39’E, 700‒1000 m, v.‒vii. 2009 (L. Meng) (1 female) .

Distribution: Australia, Brunei Darussalam, China, East and West Malaysia, Laos, Papua New Guinea,

Philippines, Solomon Is. , Thailand.

Biology: Most of the host records for this species given by Browne (1984), Ohno et al. (1987a, b), Ohno (1990) were based on specimens identified by F.G. Browne, and should probably be referred to B. orientalis .

Figures

FIGURES 10–17. Baiocis species. 10. B. angustiformis, dorsal view male elytral apex. 11‒12. B. inimicus. 11, dorsal view male elytral apex; 12, lateral view male abdomen and elytral apex. 13. B. pernanulus, dorsal view male elytral apex. 14, 17. B. orientalis. 14, male elytral apex, posterior view; 17, male head, lateral view. 15. B. unispineus, lateral view male abdomen and elytral apex. 16. B. pernanulus, lateral view female head. Scale line = 0.67 mm (Figs 11‒12, 15); 0.5 mm (Figs 10, 13, 16‒17); 0.4 mm (Fig. 14)

FIGURES 26–32. Baiocis species. 26‒27. B. orientalis dorsal view: 26, male (2.3 mm); 27, female (2.4 mm). 28. B. pernanulus male (2.3 mm), dorsal view. 29. B. sumatranus male (3.5 mm), dorsal view. 30‒32. B. laosi. 30, male (2.9 mm), dorsal view; 31, female (3.0 mm), dorsal view; 32, male abdomen, lateral view.