43. Xyrosaris louisae sp. nov.

Description of adult (Plate 6). Wingspan 11–13 mm. Head tufted greyish white, labial palpus slender, segment 3 longer than segment 2, greyish white; scape pale brown, whitish at each end, flagellomeres weakly annulate whitish and pale fuscous. Thorax and tegula pale fuscous. Forewing whitish fuscous, paler dorsally, with an irregular scattering of darker scales, termen edged black, terminal fringe blackish, paler towards dorsum. Hindwing pale grey. Abdomen greyish.

Male genitalia (Plate 16). Uncus with termen flattened, socius comparatively long each with a spine at the apex, valva with gently concave costa, a raised process near base, saccus long and slender; aedeagus longer than valva, almost straight with a pair of cornuti.

Female genitalia. Not examined.

Diagnosis. Distinguished by its dark forewing with few distinctive markings, in the male genitalia with long narrow socii and valva of simple shape with a bulbous area near the base and aedeagus with two distinctive cornuti.

Biology. Not known, adults recorded October and November.

Derivation of the name. Named after our granddaughter Louisa.

Distribution. Kenya, only known from the southern slopes of Mt Kenya.

Type material. Holotype ♂, KENYA; Central, Castle Forest Lodge 2050 m 25.x.2016 D. Agassiz & K. Larsen slide DJLA 1589. 2 paratypes, 1 ♂, same data as holotype, 1 ♂ same locality 4–6.xi.2013 Agassiz, Beavan, Heck- ford & Larsen. slide DJLA 1332. (DJLA).