Cohicaleyrodes taiwanus (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 : 15-16

Cohicaleyrodes taiwanus (Takahashi) comb. nov.

( Figs 40–42 , 46–48 , 77 )

Aleurotrachelus taiwanus Takahashi, 1932: 45 –46.

Material examined. Neotype puparium (here designated): Taiwan, Taipei, NTU, 1 puparium on Ficus microcarpa , 7.xi.2008, A. K. Dubey, TARI, Taiwan.

Other material. Taiwan: 10 puparia on 6 slides, same data as neotype

( IARI, NHM, NTU & USDA); Lanyu, 5 puparia on Trema orientalis, 22.vii.2009, C. H. Hsieh; Taipei, National University of Arts, 10 puparia on 2 slides, on unidentified plant, 18.xii. 2008, A. K. Dubey; 6 puparia on Elatostema lineolatum var. majus, 16.iii.2009, A. K. Dubey.

Host plants. Pachyrrhizus erosus ( Takahashi, 1932) ; Elatostema lineolatum var. majus , Ficus microcarpa , Trema orientalis (new records).

Distribution. Taiwan.

Remarks. Takahashi (1932) mentioned that “margin with many short small teeth in 2 rows, the outer teeth nearly as long as or slightly longer than wide, rounded or sometimes slightly pointed apically, slightly narrowed, towards the distal margin; the inner teeth distinctly discernable, very short, broadly rounded.” Our observations confirm that the puparia of A. taiwanus have single row of marginal teeth ( Fig. 47 ), but teeth appear slightly chitinised at base, other major characteristics of puparia were in agreement with description of Takahashi (1932) which lacks drawing. Takahashi stated that the ‘types’ will be preserved in the Department of Agriculture Research Institute Formosa (TARI), but Mound & Halsey (1978) did not include type depository details for this species. During the present study, we checked the TARI Aleyrodidae ‘ type specimens’ collection as well as their digital records and other determined specimens, but no type material of A. taiwanus survives, also there is no record of their presence in any other depository. It is concluded that the syntypes of A. taiwanus were lost and are permanently unavailable for further study (reason for believing the type material is lost as stated under article 75.3.4).

Aleurotrachelus is a large genus and its definition is weak. Allied genera may be more distinct and with fewer species, and revisional studies on these genera need to be started. The neotype will be useful and necessary for the evaluation of Aleurotrachelus (under article 75.3). It should not be regarded as “a matter of curatorial routine” as defined for ‘circumstances excluded’ under article 75.2. The neotype has been established under the ICZN articles 75.3.2–75.3.4, 75.3.6, 75.3.7, and is based on material collected in Taiwan. This neotype is deposited in TARI to avoid any confusion concerning the recorded type depository as stated in Takahashi (1932). The puparia of this species are similar to C. rubi , but differ from it in having broader posterior abdominal area, densely scattered pores and porettes on subdorsal area, rhachisform abdominal segments, each with 3–5 pores and associated porettes, the abdominal segment sutures extending on subdorsum, and the vasiform orifice notched at the caudal end. These characteristics differentiating A. taiwanus from other nominal group taxon for which the neotype is designated (justification of the characters statement for article 75.3.2).

Figures

FIGURES 40 – 42. Neotype puparium. Co. taiwanus (TARI). 40, dorsal and ventral views (digits 1 – 9 indicating the position of the submarginal setae). 41, margin. 42, posterior end of puparium and vasiform orifice.

FIGURES 43 – 48. Microscopic images of puparia. 43, Co. rubi, puparium. 44, same, margin. 45, same, vasiform orifice. 46, Co. taiwanus, neotype puparium. 47, same, margin. 48, same, vasiform orifice.

FIGURES 73 – 80. Type slides. 73, lectotype & paralectotypes, A. fissistigmae. 74, holotype, A. maesae. 75, lectotype & paralectotypes, A. pyracanthae. 76, lectotype & paralectotypes, Co. rubi. 77, neotype, Co. taiwanus. 78, lectotype & paralectotypes, Cr. elatostemae. 79, lectotype & paralectotypes, Cr. micheliae. 80, lectotype & paralectotypes, Cr. turpiniae.