Crenidorsum alpinus (Takahashi) Takahashi, 2010

Dubey, Anil Kumar & Ko, Chiun-Cheng, 2010, Aleurotrachelus Quaintance & Baker (Hemiptera: Aleyrodidae) and allied genera from Taiwan, Zootaxa 2685, pp. 1-29 : 19

Crenidorsum alpinus (Takahashi) comb. nov.

( Figs 49–51 , 54–56 )

Aleurotrachelus alpinus Takahashi, 1940: 29 .

Material examined. Taiwan: Taiheizen, 14 puparia on slide, on Rubus sp., 17.ix.1939, R. Takahashi; Taiheizen, 16 puparia on slide, on Rubus sp.; Taihoku (Taipei), 27.ix.1939, R. Takahashi ( TARI).

Other material. Taiwan: Chihnankung, 3 puparia on 3 slides, on Trochodendron aralioides , 25.x.1992, C. C. Ko; 1 puparium on Smilax cbina , 5.xi.1994, C. C. Ko; Chiayai, 10 puparia on 7 slides, on Alocasia macrorrhiza, K. C. Chou ; Hsinchu, 3 puparia on Alocasia macrorrhiza , 13.ii.2009, A. K. Dubey; Muzha, 1 puparium on Smilax cbina , 7.i.1995, K. C. Chou; Nantou, 2 puparia on 2 slides, on Siebold ardisia, 14.viii.1995, K. C. Chou; 2 puparia on 2 slides, on Thladiantha nudiflora , no date, C. C. Ko ( NTU).

Host plants. Rubus sp. ( Takahashi, 1940); Alocasia macrorrhiza, Siebold ardisia, Smilax cbina , Trochodendron aralioides , Thladiantha nudiflora (new records).

Distribution. Taiwan.

Remarks. Takahashi (1940) mentioned “three pairs of minute setae present on the cephalothorax, a pair of similar ones on the basal abdominal segment and near the vasiform orifice.” We observed the setae were absent on first abdominal segment, the three setae are cephalic, meso- and metathoracic; dorsum with many geminate pores, the smaller pore always placed on white shade. Further, he noted “the vasiform orifice with a very small blunt median tubercle”, we observed the tubercle is absent in some of his mounted puparia of Cr. alpinus .

Figures

FIGURES 49 – 51. Puparium. Cr. alpinus (TARI). 49, dorsal and ventral views (digits 1 – 6 indicating the position of the submarginal setae). 50, margin. 51, vasiform orifice (VS denotes ventral setae).

FIGURES 54 – 59. Puparia. 54, Cr. alpinus, puparium (TARI). 55, same, submedian area of thorax. 56, same, vasiform orifice. 57, Cr. elatostemae, lectotype puparium. 58, same, submedian area of thorax. 59, same, vasiform orifice.