Bembidion (Desarmatocillenus) foochowense Lindroth, 1980

Toledano, Luca, 2009, Notes on the Bembidiina of Taiwan with description of three new species (Coleoptera: Carabidae), Acta Entomologica Musei Nationalis Pragae 49 (2), pp. 577-598 : 581

Bembidion (Desarmatocillenus) foochowense Lindroth, 1980

( Figs. 2 , 17 )

Bembidion (Desarmatocillenus) foochowense Lindroth, 1980: 200 . Cillenus (Desarmatocillenus) foochowensis: MARGGI et al. (2003) : 272; LORENZ (1998): 200; LORENZ (2005): 216. Bembidion (Desarmatocillenus) foochowense: TOLEDANO (2008c) : 95.

Material examined. TAIWAN: Lunglungchi, Fulung, Taipei Hsien, 31.vii.2001, Terada lgt., 1 J 3 ♀♀ ( KTHJ, CTVR).

Type ( China, Fujang) seen ( BMNH).

Diagnosis. A “ Cillenus -like” species, very similar to Bembidion aestuarii (Uéno & Habu, 1955) but differing from it by a shorter metatrochanter (less than half as long as the metafemur), more diffuse and more extended dark elytral spot reaching the suture, and slightly lighter colour of the pronotum ( Fig. 2 ).

Male genitalia ( Fig. 17 ). Median lobe of aedeagus with ventral margin almost rectilinear, bent ventrally at apical fifth. Small complex of typical “ Cillenus -like” sclerites in middle of endophallus and coarse pack of thick, poorly sclerotized membranes with scales filling anterior half of median lobe. A single, long and thick seta at the apex of each paramere in the specimen examined.

Distribution. Originally described from south-eastern China (Foochow = Fuzhou, Fujian Province). First record from Taiwan.

Remarks. As already pointed out by LINDROTH (1980), B. foochowense is very similar in external characters to small specimens of B. aestuarii except for the shorter metatrochanters. Given the male genital described here, B. foochowense and B. aestuarii seem to be sister species. Consequently the phylogenetic importance of the metatrochanter length in the Cillenus complex seems less relevant, and I emphasize once more my doubts about the validity of several subgenera of the complex.

Figures

Figs.1–5. Bembidion spp., habitus. 1 – B. (Armatocillenus) sauteri Jedlička, 1954, holotype; 2 – B. (Desarmatocillenus) foochowense Lindroth, 1980; 3 – B. (Odontium) fusiforme Netolitzky, 1914; 4 – B. (Plataphus) takasagonis Habu, 1973; 5 – B. (Blepharoplataphus) teradai sp. nov., holotype.

Figs. 17–28. Bembidion and Sinechostictus spp., median lobe of the aedeagus. 17 – B. (Desarmatocillenus) foochowense Lindroth, 1980; 18 – B. (Odontium) fusiforme Netolitzky, 1914; 19 – B. (Plataphus) takasagonis Habu, 1973; 20 – B. (Blepharoplataphus) teradai sp. nov., holotype; 21 – B. (Trichoplataphus) miwai Jedlička, 1946; 22 – B. (Trichoplataphus) taiwanum Netolitzky, 1939; 23 – B. (Trichoplataphus) jelineki sp. nov., holotype; 24 – B. (Trichoplataphus) seijii sp. nov., holotype; 25 – B. (Ocydromus) chloreum Bates, 1873, specimen from Taiwan; 26 – B. (Ocydromus) shunichii Habu, 1973; 27 – B. (Ocydromus) peleum Jedlička, 1933, specimen from Taiwan; 28 – S. (Pseudolimnaeum) chuji Jedlička, 1951.