Psychana rujumensis, Ježek & Harten, 2005

Ježek, Jan & Harten, Antonius van, 2005, Further new taxa and little-known species of non-biting moth flies (Diptera, Psychodidae) from Yemen, Acta Entomologica Musei Nationalis Pragae 45, pp. 199-220 : 207-211

Psychana rujumensis sp. nov.

( Figs. 35-53 )

Type material. HOLOTYPE: J, YEMEN: Ar Rujum , 15°29′N 43°41′E, 16.x.2000 - 15.i.2001, Malaise trap, A. van Harten leg. Slide, dissected specimen, Cat. No. 34264, Inv. No. 14053 ( NMPC) . PARATYPES: 3 JJ 6 ♀♀ (slides, NMPC), the same locality, collector and trap. ALLO- TYPE: ♀, 16.x.2000 - 15.i.2001, Cat. No. 34265, Inv. No. 14054. OTHER PARATYPES: JJ:, same date, Cat. No. 34266-34267, Inv. No. 14055-14056; 16.i.-9.iv.2001, Cat. No. 34268, Inv. No. 14057; ♀♀, 16.x.2000 - 15.i.2001, Cat. No. 34269-34271, Inv. No. 14058-14060; 16.i.-

9.iv.2001, Cat. No. 34272, Inv. No. 14061; 9.iv.-5.vi.2001, Cat. No. 34273, Inv. No. 14062. Figures based mainly on the holotype, partially on paratypes.

Description. Male. Eyes separated, C-shaped ( Fig 35 ). Minimum distance between upper part of eyes hardly as wide as diameter of facet ( Fig. 36 ). Eye bridge formed by four rows of facets. Frontoclypeus with large central three-lobed patch of insertions of hairs; medial stripe longest, not connected with vertex pits. Antennae 15-segmented ( Figs. 37, 38 ); scape very short, wide, hardly globular; flagellomeres pitcher-shaped, symmetrical; last three flagellomeres gradually reduced; antennomere 13 pyriform, antennomere 14 almost globular with very short neck, both segments fused; antennomere 15 minute, conical, entirely separated. Sensory filaments long, paired, with three branches. Length ratio of maxillary palpomeres 1: 1.1: 1: 1.6 ( Fig. 45 ), palpomere 4 not annulate. Terminal lobe of labium with six digital protuberances ( Fig. 44 ). Maximum length of cibarium equal to 1.3 times length of epipharynx. Thoracic sclerites as in Fig. 46 , meropleural sclerite inconspicuously divided. Wing ( Fig. 39 ) widely lancet-shaped, 1.7 mm (holotype) and 1.6-1.9 mm (paratypes) long, almost clear, clouded between fore margin and R 1 in small narrow area; following veins or their parts strengthened: Sc (conspicuously), R 1, R 5, M 1+2, M 4 and Cu; basal costal nodes well visible, Sc uninterrupted; M 3 and Cu hardly with connection to M 4; R 5 extends in apex of wing. Medial wing angle 79° (BCD); wing indices: AB: AC: AD = 1.4: 2.1: 1.6; BC: CD: BD = 1: 1.1: 1.4; maximum length of wing equal to 2.2 times its maximum width. Maximum length of haltere equal to 2.8 times its maximum width. Ratios of lengths of femora, tibiae and first tarsomeres: P 1 = 2.8: 2.6: 1; P 2 = 2.9: 3.2: 1.2; P 3 = 3.3: 3.8: 1.3. Fore claws as in Fig. 40 . Basal apodeme ( Figs. 41 , 47 ) of male genitalia bent, narrow from dorsal view, widened from lateral one, pointed proximally; distal part of basal apodeme forked in two caudal arms. Copulatory organ with smooth surface outside, phallomeres of characteristic shape, sclerotized in some parts of lobes. Gonocoxite ( Figs. 42 , 47 ) long, cylindrical in lateral view and protruding laterally in dorsal view. Gonostylus somewhat shorter than gonocoxite, with acuminate apex, slightly arched. Epandrium ( Figs. 43 , 48 ) with two large patches of hair areas connected caudally, inside with two conspicuous spine-shaped protuberances, sclerotized remainders of tergite and sternite 10 missing. Basal aperture developed. Hypandrium ( Figs. 41 , 47 ) narrow, bare, slightly widened in middle. Epiproct and hypoproct small ( Figs. 43 , 48 ), hairy. Surstylus long, C-shaped, twice as long as epandrium, subapically with one retinaculum.

Female. Wing 1.6-2.0 mm long. Subgenital plate ( Fig. 49 ) of characteristic shape, hairy, with large bilobed sclerotized basis; two small caudal lobuli separated by medial cleft. Sensory digit developed. Mesh-like structures of complicated sclerotized forms in the area of genital chamber not developed ( Figs. 50 , 51 , 52 ). Cercus ( Fig. 53 ) slightly bent, more then three times as long as its basal diameter.

Differential diagnosis. The new species is similar to Psychana umbratica Quate, 1965 , in the shape of the terminal flagellomere, the form of male gonopode as well as surstylus and the shape of female subgenital plate, but is quite different in the structures of male genitalia. Psychana rujumensis sp. nov. is diagnosed by the conspicuously developed basal apodeme and ventral phallomere, short and partially fused dorsal phallomeres, and conspicuously sclerotized sides of the base of female subgenital plate (present as largely widened patches). Psychana umbratica has a rudimentary basal apodeme of the male genitalia and ventral phallomere, very long and entirely fused dorsal paired phallomeres, and a narrowly sclerotized base of subgenital plate.

Etymology. Named after the type locality.

Distribution. Yemen.

Bionomy. Unknown. The adults were trapped in a Malaise trap at Ar Rujum from October to June.

Figures

Figs. 35-43. Psychana rujumensis sp. nov., J. 35 – head; 36 – facets; 37 – basal antennomeres; 38 – apical antennomeres; 39 – wing; 40 – dorsal view of fore claw; 41 – lateral view of aedeagal compex; 42 – lateral view of gonocoxite and gonostyle; 43 – dorsal view of epandrium and surstyli. Scales = 0.1 mm (Figs. 35-38, 40-43); 1 mm (Fig. 39).

Figs. 44-53. Psychana rujumensis sp. nov., J (44-48) and ♀ (49-53). 44 – dorsal view of terminal lobe of labium; 45 – maxilla and maxillary palpus; 46 – lateral view of thoracic sclerites; 47 – dorsal view of aedeagal complex and gonopods; 48 – lateral view of epandrium and surstylus; 49 – subgenital plate; 50 – dorsal view of genital chamber; 51 – same, anterior view; 52 – same, lateral view; 53 – lateral view of cercus. Scales = 0.1 mm (Figs. 44-45, 47-53); 0.5 mm (Fig. 46).

Figs. 1-9. Copropsychoda bulbosa sp. nov., J (1-7) and ♀ (8-9). 1 – head; 2 – basal antennomeres; 3 – dorsal view of terminal lobe of labium; 4 – dorsal view of fore claw; 5 – dorsal view of aedeagal complex and gonopods; 6 – lateral view of gonocoxite and gonostyle; 7 – lateral view of epandrium and surstylus; 8 – anterior view of genital chamber; 9 – lateral view of subgenital plate and cercus. Scales = 0.1 mm (Figs. 1-3, 5-9); 0.05 mm (Fig. 4).