Thrinchostoma (Eothrincostoma) silvaticum Blüthgen, 1930

Pauly, Alain & Eardley, Connal, 2013, A Revision of Afrotropical Thrinchostoma de Saussure, 1890 (Hymenoptera: Apoidea: Halictidae), Belgian Journal of Entomology 12, pp. 1-76 : 19

Thrinchostoma (Eothrincostoma) silvaticum Blüthgen, 1930

( Figs 20 , 21 , 25a )

Thrincostoma [!] (Eothrincostoma) silvaticum Blüthgen, 1930: 499 , 520, 530, 533, 538, ♀. Female holotype: Uganda, Tero-Walde, VII.1912, leg. C.C. Gowdey (BMNH). Thrinchostoma silvaticum Blüthgen : Cockerell, 1936: 9.

Thrinchostoma (Eothrincostoma) silvaticum Blüthgen : Michener, 1978: 523; Pauly, 1999: 155, 176.

DIAGNOSIS. Both sexes differs from T. torridum by the number of notches on the distal segments of the antennae (8 in males, 6 in females). The male is new and resembles that of T. torridum except by the number of notches on the flagellum. The apical lobe of the hind tibiae is also a bit more curved (fig. 20c).

MATERIAL.

UGANDA. Bugoma Forest , Unyoro, 3700ft, 1-5.XII.1911, 1♀, leg. S.A. Neave ( BMNH) ( BLÜTHGEN 1930 ) .

KENYA. Kakamega District, Kakamega forest, Isecheno , 0.02°N 34.97°E, 1800m, 18.X.1999, equatorial rainforest, 1♀, leg. R.R. Snelling ( LACM) . – Kakamega district, Isecheno, Isecheno Forest Reserve, 0.24° 34.86°E, 1600m, 21-28.II.2002, Malaise trap in clearing Equatorial Rainforest , 1♀, 18.III.2002, on flowers of Vernonia sp. ( Asteraceae ), 1♂, leg. R.R. Snelling ( LACM) . – Kakamega district, Isecheno, Isecheno Forest Reserve , 0.24°N 34.86’E, 1600m, 1-10.VII.2001, 1♀, Malaise trap in equatorial rainforest, leg. W. Okeka ( LACM) . – Kakamega District, Yala R. Forest Reserve , 1450m, 0.20°N 34.88°E, 1-10.III.2002, 1♀, Malaise trap, leg. R.R. Snelling ( LACM) .

Figures

Fig. 20. Thrinchostoma (Eothrincostoma) silvaticum, male (Kenya: Kakamega Forest).

Fig. 21. Thrinchostoma (Eothrincostoma) silvaticum, female (Kenya: Kakamega Forest).

Fig. 25. Distribution maps of Thrinchostoma (Eothrincostoma).