Simulium asakoae Takaoka and Davies 1995

Phasuk, J., Chanpaisaeng, J., Adler, P. H. & Courtney, G. W., 2005, Chromosomal and morphological taxonomy of larvae of Simulium (Gomphostilbia) (Diptera: Simuliidae) in Thailand, Zootaxa 1052, pp. 49-60 : 57

publication ID	https://doi.org/10.5281/zenodo.170004
DOI	https://doi.org/10.5281/zenodo.5657630
persistent identifier	https://treatment.plazi.org/id/F61F9002-FFE9-7941-BD64-ED9ABECBD8CB
treatment provided by	Plazi (2016-04-04 05:59:33, last updated 2024-11-26 23:52:17)
scientific name	Simulium asakoae Takaoka and Davies 1995
status

Treatment

Simulium asakoae Takaoka and Davies 1995 View in CoL

This species was described from West Malaysia ( Takaoka and Davies 1995). Takaoka and Saito (1996) noted that the male was reported as S. sp. C from Thailand by Takaoka and Suzuki (1984). The present larval specimens from Khao Yai National Park differ from Malaysian specimens in the type of setae on the abdomen and the shape of the postgenal cleft ( Fig. 4 View FIGURE 4 A). The arrangement of gill filaments most closely resembles that of S. sheilae . However, adults of S. asakoae are distinguished from those of S. sheilae by the mostly white hind tibia and basitarsus, and larvae are recognized by the sparse, minute, dark, delicate, unbranched (rarely two or threebranched) abdominal setae ( Fig. 2 View FIGURE 2 F).

The chromosomes of this species were described by Kuvangkadilok et al. (2003). A total of 67 larvae of S. asakoae were analyzed for major landmarks. The centromere regions are not notably expanded. The IIS arm has the bulge near the ring of Balbiani, which is subterminal ( Figure 1 View FIGURE 1 G).

References

Kuvangkadilok, C., Boonkemtong, C., Phayuhasena, S. & Baimai, V. (2003) Larval polytene chromosomes of black flies (Simulium) from Thailand: I. Comparison among five species in the subgenus Gomphostilbia Enderlein. Genetica, 118, 69 - 81.

Takaoka, H. & Suzuki, H. (1984) The blackflies (Diptera: Simuliidae) from Thailand. Japanese Journal of Sanitary Zoology, 35, 7 - 45.

Takaoka, H. & Davies, D. M. (1995) The Black Flies (Diptera: Simuliidae) of West Malaysia. Kyushu University Press, Fukuoka, Japan, 175 pp.

Takaoka, H. & Saito, K. (1996) A new species and new records of black flies (Diptera: Simuliidae) from Thailand. Japanese Journal of Sanitary Zoology, 24, 163 - 169.

Figures

FIGURE 1. Idiograms of chromosome arm IIS for 12 Simulium species in subgenus Gomphostilbia from Khao Yai National Park, showing relative locations of Ce, centromere; RB, ring of Balbiani; Bu, bulge; Sh, shoestring. A, Simulium angulistylum. B, S. decuplum. C, S. dentistylum. D, S. gombakense. E, S. siamense. F, S. sp. A. G, S. asakoae. H, S. sheilae. I, S. sp. nr. sheilae. J, S. novemarticulatum. K, S. sp. B. L, S. sp. C.

FIGURE 2. Photographs of setae on abdominal cuticle of Simulium species in subgenus Gomphostilbia. A, Simulium angulistylum. B, S. decuplum. C, S. dentistylum. D, S. siamense. E, S. sp. A. F, S. asakoae. G, S. sheilae. H, S. sp. nr. sheilae. I, S. novemarticulatum. J, S. sp. B.

FIGURE 4. Photographs of postgenal clefts of Simulium species in subgenus Gomphostilbia. A, Simulium asakoae. B, S. gombakense. C, S. sheilae. D, S. dentistylum. E, S. sp. nr. sheilae. F, S. sp. A.