Perittia ravida, Kaila, Lauri, 2009

Kaila, Lauri, 2009, Notes on the genus Perittia of the West Palaearctic region with descriptions of three new species (Lepidoptera: Elachistidae), Zootaxa 2230, pp. 16-28 : 25-26

Perittia ravida sp. n.

( Figs. 9, 10 , 19 , 20 , 24 )

Holotype 3: Turkey, 35 km SW Aksehir, Cetince, 1200 m, 9.-13.V.2000, J. Junnilainen leg. (L. Kaila prep. n. 3132 in Coll. MZH). Paratypes (1 3, 2 Ƥ): 1 3 with the same collecting data as holotype (L. Kaila prep. 3910, in Coll. Junnilainen); Greece, Kos, Lampi, 2 Ƥ, 1.VI.1979 P. Grotenfelt leg. (L. Kaila prep. 4544, 4545, MZH).

Diagnosis. P. r a v i d a is diagnosed under P. minitaurella (see above).

Description ( Figs. 9, 10 ). Forewing length 4.0– 4.2 mm. Length of labial palpus equal to diameter of head; porrect, pale ochreous grey, intermixed with brassy scales. Head, neck tuft, tegula, thorax, scape and pedicel of antenna pale grey, to varying extent intermixed with brassy scales; flagellum grey, ventrally with cilia 0.5 length of antennal shaft in both male and female; scape with pecten consisting of dense row of long, stiff, grey scales. Legs grey, intermixed with brassy scales, hind tibia and tarsal segments distally pale. Forewing lanceolate, ground colour formed of basally pale ochreous grey, distally darker grey scales creating uniform mottled ochreous grey appearance, broadly along fold less mottled and more ochreous; fringe concolorous. Underside of forewing grey, fringe scales ochreous grey. Hindwing grey with ochreous fringe scales both above and below. Male genitalia ( Figs. 19 , 20 ): Uncus reduced to pair of small setose swellings. Basal arms of gnathos distally fused, gnathos with oval spinose mesial knob. Costa of valva slightly concave, distally prolonged as tongue-shaped appendix with small upcurved apical tooth, length 1.5 times maximal width of valva; sacculus somewhat convex, distally tapered to pointed apex, length 1.3 times maximal width of valva; termen of valva concave. Ventral shield of juxta small, broadly U-shaped, setose; dorsal shield large, triangular. Phallus (without manica) 0.9 times length of costa of valva, straight except at distal 0.25 where asymmetrically bent; basal 0.5 overlaid by distinctive manica extending as bilobed cusp, in length 0.33 of phallus; basal opening of phallus posteriorly directed; coecum absent. Cornuti absent. Female genitalia ( Fig. 24 ): Papillae anales fused dorsodistally with non-elastic membrane, distally tapered to joined sclerotised apex, basally with long setae; membranous sac between papillae anales ventrodistally, densely armed with coarse teeth. Apophyses posteriores slightly longer than papillae anales, straight, stout; apophyses anteriores more than 0.5 length of apophyses posteriores, straight, rather stout. Ostium bursae oval-shaped, almost in middle of sternum 8, somewhat extended towards caudal margin of sternum 8, width 0.2 of width of sternum 8, height almost 0.5 of height of sternum 8; antrum absent; colliculum 0.5 length of apophyses anteriores; ductus seminalis joined cephalically to colliculum, narrow tubular. Ductus bursae membranous, straight and tubular, 4.0 times length of apophyses posteriores. Corpus bursae rounded, medially sparsely covered by minute internal spines; signum absent.

Distribution. Greece, Turkey.

Remarks. The association of males and females, which come from different localities, is based on their extremely similar external appearance. Additional support for this putative association is derived also from similarity in the female genitalia of P. ravida , which bear much resemblance to those of P. carlinella , as do those of males of the two species.

Figures

FIGURE 19. Male genitalia of Perittia ravida sp. n. Holotype (L. Kaila prep. 3132).

FIGURES 7 – 11. External appearance of Perittia species. Fig. 7. P. karadaghella 3 (Turkey); Fig. 8. P. m i n i t a u re l l a sp. n. 3 holotype (Greece: Crete); Fig. 9. P. r a v i d a sp. n. 3 holotype; Fig. 10. P. ravida sp. n. 3 paratype (Turkey: Aksehir region); Fig. 11. P. biloba 3 (Uzbekistan: Jizzax region).

FIGURES 20 - 21. Male genitalia of Perittia species. Fig. 20. P. r a v i d a sp. n. Paratype (L. Kaila prep. 3190); Fig. 21. P. biloba (Uzbekistan: Jizzax region, L. Kaila prep. 5074).

FIGURES 22 - 24. Female genitalia of Perittia species. Fig. 22. P. mucronata (Turkey: Aksehir region, L. Kaila prep. 3915); Fig. 23. P. huemeri (Hungary, L. Kaila prep. 4348); Fig. 24. P. r a v i d a sp. n. (Greece: Kos, L. Kaila prep. 4544).