Hydrodroma tonapii Cook

(Table 5)

Material compared: “ Holotype Ψ India, Kerala St. 2 m. W. Vayitri ex. stream 15 February 1963, D.R. Cook IND 81” (FMNH). State of conservation: mounting medium slightly darkened and turbid, right palp missing.

Remarks: H. tonapii was described by Cook (1967) from a single female specimen taken in Kerala State (India). The description of this species did not include a discussion of affinities. Furthermore Cook gave no information about the presence and number of swimming setae on II/III-L. The number and distribution of swimming setae on legs (see Table 5), makes H. tonapii similar to H. reinhardi Pesic (Mediterranean) and H. wilesi sp. nov. (see above). For a clearer separation of H. reinhardi and H. tonapii, information on general variability of measurements in additional specimens of H. tonapii is necessary (Pesic 2002).

Distribution: India.

Habitat: stream.

H.tonapii female holotype

II-L-5 posterior 0

III-L-4 posterior 3

III-L-5 posterior 3

IV-L-4 anterior 2

IV-L-4 posterior 3

IV-L-5 anterior 0

IV-L-5 posterior 2