Amblypsilopus pallidicornis ( Grimshaw, 1901 )

Amblypsilopus pallidicornis ( Grimshaw, 1901) View in CoL

( Fig. 6 View FIGURE 6 )

Type locality: Hawaii, Oahu, Honolulu .

Material examined. Burundi: 2♂, Bujumbura, Tanganyika Lake shore, 3.39139°S, 29.3500°E, 2–9.III.2025, D. Dubrovskiy GoogleMaps ; 1♀, same label with collection date 23.II.–1.III.2025. Males and female dried from ethanol and mounted on pins.

Distribution. Afrotropical: Madagascar, Seychelles; Australasian: USA (Hawaiian Is.), Society Is., Marquesas Is., Guam, Palau; Oriental: China ( Taiwan). First record from Burundi.

Notes. Measurements (mm). Male body length 5.2, wing length 4.8, wing width 1.3, antenna length 3.5. Female body length 4.5, wing length 4.2, wing width 1.3, antenna length 2.9. Male femur, tibia and tarsomere (from first to fifth) length (mm): fore leg: 1.44/1.82/1.84/0.55/0.36/0.22/ 0.14, mid leg: 1.74/2.74/2.02/0.57/0.34/0.22/0.10, hind leg: 2.06/3.38/1.49/0.68/0.42/0.25/0.13. Female femur, tibia and tarsomere (from first to fifth) length (mm): fore leg: 1.26/1.69/1.51/0.49/0.37/0.19/ 0.15, mid leg: 1.43/2.08/1.56/0.48/0.31/0.16/0.12, hind leg: 1.64/2.78/1.19/0.5 4/0.34/0.21/0.14.

A male of this species from the Silhouette Is. ( Seychelles) was redescribed by Meuffels & Grootaert (2007) under the name Amblypsilopus sp. S30. Bickel (1994) supposed that it was accidentally introduced to Polynesia and the Seychelles by human transport. The recent findings of the species in Burundi and Madagascar can be explained by the same reason. On the other hand, the Amblypsilopus pallidicornis species group is richer in species number on Madagascar ( Grichanov 2021), than in Australasia and Orient ( Bickel 1994). Therefore, A. pallidicornis is a possible founder of radiated species complexes evolved more than one million years ago in the Old World and Australasia. Despite the wide area of A. pallidicornis , it was figured only once by Hardy & Kohn (1964). The latter authors figured the hypopygium (fig. 61h) incompletely, without long flattened inner seta at middle of cercus ( Fig. 6G View FIGURE 6 , invisible in lateral view), somewhat shorter than capitate mid-ventral seta ( Fig. 6F View FIGURE 6 ); both setae are speciesspecific characters.