Descriptions of new Tortricidae (Lepidoptera) reared from native fruit in Kenya Author Razowski, Józef Author Brown, John W. text Zootaxa 2012 3222 1 27 journal article 45308 10.5281/zenodo.280255 9d264785-6035-49e2-b6cf-29e3022a6e80 1175-5326 280255 Phtheochroa aarviki , sp. n. Figs. 1 , 15, 16 , 29 Diagnosis. Phtheochroa aarviki is most similar to P. kenyana in facies and genitalia. The two share a similar forewing pattern, but the ground color of P. a ar v i ki is dark gray-brown ( Fig. 1 ) compared to the pale gray-brown of P. kenyana (Aarvik 2010: fig. 41). The male genitalia of P. aarviki can be distinguished from those of P. kenyana by the blunt termination of the median process of the transtilla (an emarginate, U-shaped termination in P. kenyana ) and the presence of two large cornuti in the vesica (one in P. kenyana ). In the female genitalia, the narrow band of the antrum is attached to a broad, sclerotized plate in P. a a r v i k i which is absent in P. kenyana . Both species share with P. ingridae Huemer, 1990 from Europe (see Razowski 2002c ) and species of Actihema Razowski, 1993 from eastern Africa (see Aarvik 2010) an unusual, highly modified juxta with a long slender mesal process and the uncus reduced to a small mesal lobe (i.e., P . ingridae ) or lost altogether (i.e., Actihema ). However, it is uncertain whether these character states are synapomorphies or merely reflect convergence. These species are easily distinguished by a number of other features: the socii are broad basally and digitate distally in Actihema (Aarvik 2010: figs. 27–36), rounded in P. ingridae (Razowski 2002: fig. 75), and subtriangular in P. a a r v i k i ( Fig. 15 ) and P. kenyana (Aarvik 2010: fig. 4). The elongate process of the juxta is densely spined in the distal half in Actihema and smooth throughout in P. i n g r i d a e , P. aarviki , and P. kenyana . The ventral edge of the valva is somewhat rounded from the sacculus to the apex in Actihema , P. a a r v i k i , and P. kenyana , whereas it is deeply concave basally in P. ingridae . The phallus is slender in the distal half (width <0.18 times length) and the vesica lacks cornuti in Actihema , whereas it is wider (width 0.25–0.30 times length) in P. i n g r i d a e and P. aarviki , with one large cornutus in P. ingridae and P. k en y a na , and two large cornuti in P. aarviki . The male genitalia of P. aarviki and P. kenyana also are somewhat similar to those of Trachybyrsis euglypta Meyrick, 1927 , particularly in the overall shape of the valva and phallus; P. aarviki also shares with T. euglypta two cornuti in the vesica. However, T. euglypta lacks the long, dorsomedian process of the juxta and has an elongate-rectangular median process from the transtilla (broad and rounded in P. a a r v i k i ). The median process of the transtilla of P. aarviki is similar to that of Eugnosta assecula (Meyrick, 1909) from South Africa , but P. a a r v i k i lacks the erect rigid socii characteristic of Eugnosta Hübner [1825], 1816. Description. Male. Head : Vertex and frons olive gray; labial palpus olive gray with a small patch of cream scales dorsally on subbasal portion on segment II, length 3 times horizontal diameter of compound eye. Thorax : Notum brownish gray, darker than head; legs unmodified, without sex scales in male. Forewing length 6.5–6.8 mm (n = 2); forewing ( Fig. 1 ) slightly expanding distally; costa weakly curved throughout, costal fold absent; termen weakly oblique to costa, slightly sinuate before middle; ground color whitish gray, densely scaled with dark brownish gray, darker in distal 0.33 of wing than in basal portion; pattern weak, in form of brown, faint, oblique fasciae from basal 0.3 of costa to near mid-dorsum; costa with ill-defined, small, faint brownish orange, subapical patch; fringe cream gray basally, dark brown distally. Hindwing brownish gray; basal 0.4 of costa with distinct pale orange hairpencil; fringe brownish gray with darker basal area. Abdomen : Genitalia ( Fig. 15 ) with uncus in form of rudimentary median prominence at posterior end of tegumen; socii broad, short, subtriangular; valva broad to about middle, then tapering distally; sacculus simple, uniformly broad throughout; median part of transtilla broad, very short, rounded, finely spined; juxta with elongate dorsomedian process; phallus ( Fig. 16 ) moderately large, slender, with distinct attenuate ventral termination; vesica with two slender cornuti, one slightly longer than the other. Female. Head and thorax : Essentially as described for male, except forewing length 7.0 mm (n = 2) and ground color slightly paler; hindwing with number of bristles in frenulum variable: 3& 3 in one specimen, 4& 4 in the other (having a higher number of bristles than most Cochylini , as do other species of Phtheochroa ; see Monsalve et al. 2011 ). Abdomen : Genitalia ( Fig. 29 ) with papillae anales unmodified; apophyses anteriores about 1.8 times as long as papillae anales, slightly longer than apophyses posteriores; lamella postvaginalis with sclerotized mesal process; lamella antevaginalis rectangular, with a distinct, narrow, anterior band; accessory bursae absent; ductus bursae broad, mostly sclerotized, not differentiated from corpus bursae; origin of ductus seminalis uncertain; posterior third of corpus bursae with dense fine spines. Holotype (3). Kenya , Central Province, Kereita Forest, 2500 m , 0°56.40’S 36°51’E , 3 Dec 2003 , A&M Coll. #2587, r.f. Bothriocline sp. [ Asteraceae ]; GS USNM 84,907. Paratypes (23, 2Ƥ). Same data as holotype ; GS USNM 84,906 (Ƥ), 118,732 (3). Etymology. The specific epithet is a patronym for Leif Aarvik in recognition of his exceptional work on African Tortricidae .