Iranotelmatoscopus kenyensis Ježek & Oboňa, 2019

Ježek, Jan & Oboňa, Jozef, 2019, Three new species of moth flies (Diptera, Psychodidae, Psychodinae) from the Afrotropical Region, Zootaxa 4577 (1), pp. 73-90 : 81-87

Iranotelmatoscopus kenyensis Ježek & Oboňa sp. nov.

( Figs. 34–55 , 57 )

Description. Male. Head almost rounded from frontal view (1.1 times as broad as long). Vertex with raised

inconspicuous tubercle dorsally and C-shaped compound eyes laterally ( Fig. 34 ). Posteriolateral margins of eyes without enlarged alveoli of supraocular bristles on both sides. Eyes separated, eye bridge divided by one facet diameter ( Fig. 34 ) and formed by 3 facet rows ( Fig. 35 ). Ratio of distances of apices of eyes (tangential points) to facet diameter 10:1. Dorsal and ventral apices of eyes are almost of the same size, only ventrally a little narrower. Hairs of frons are sporadic ( Figs. 34, 35 ). Scar patch of frontoclypeus as well as above the upper apices of eyes is continuous, not divided in vertical axis by a median scar-free band. Antennae incomplete ( Fig. 42 ). Scape almost cylindrical, 2.2 times as long as pedicel which is globular. Basal flagellomeres pitcher-shaped, bulbose part asymmetrical in horizontal axis (against postpedicel), necks (internodes) represent 1/3 of the length of article. Ascoids simple, digitate, paired ( Fig. 42 ). Mouthparts not extending beyond basal palp segment ( Fig. 34 ). Labellum bulbose, with digital protuberances in between ( Fig. 43 ), miniature spines between both lobes are not developed. Length ratio of maxillary palps 1.0:1.1:1.3:1.5, segment 4 not annulate ( Fig. 36 ). Ratio of maximum length of cibarium to length of epipharynx 1.3:1 ( Fig. 34 ), labrum pointed ( Fig. 49 ).

Thorax. Anepisternum setae patch elliptic, anepimeron with almost circular setose patch ( Fig. 37 ). Spiracles set low on mesothorax, closely separated from anterior region of anepisternite. No thoracic allurement organs. Wings ( Fig. 57 ) lanceolate, 1.6 mm long - holotype, paratypes 1.5–2.0 mm, rounded distally, not expanded at the posterior margin. The ending of R 5 a little beyond the tip of wing. Wing membrane slightly infuscated and ends of all veins are a little strengthened distally with dark spots. R 1 proximally very weakened. Following veins or their parts strengthened: Sc, with conspicuously marked last third; R 2 and R 5 basally; M 3 in 2/3 of the length; CuA 2 in the middle conspicuously and gradually to basal part with lesser intensity. Radial and medial forks complete, their position see on Fig. 57 . Both forks and the ending of CuA 2 are in one line (central area of wing). Wing indices AB:AC:AD = 3.8:3.8:4.2; BC:CD:BD = 1.0:1.2:2.2. Wing index 2.6, medial wing angle 180° (BCD). Halteres ( Fig. 38 ) almost spatula-shaped with a prolonged stem. Ratio of maximum length of halteres to their maximum width approximately 2.5:1. Ratios of lengths of femora, tibiae and first tarsal segments P 1 2.1:2.5:1.0, P 2 2.5:3.1:1.4, P 3 2.6:3.1:1.3. Paired tarsal claws of P 1 bent distad, with two ventral thickening ( Fig. 50 ).

Male genitalia. Ejaculatory apodeme longly U-shaped with three conspicuously sclerotised ribs distally ( Fig.40 ). Aedeagal complex flanked by jointed needle-shaped moveable appendages approximately of the same length as aedeagus which is racquet-shaped, clearly symmetrical, with conspicuous flaps on both sides. Gonostyli gradually tapering to tips, 1.2 times as long as gonocoxites which are cylindrical and a little bent ( Figs. 39 , 44 ). Epandrium trapezoidal, with two patches of hairs distally ( Figs. 51, 52 ), central aperture doubled. Ventral plate was not observed. Hypandrium stripe-shaped, inconspicuously strengthened medially ( Figs. 40 , 52 ). Hypoproct and epiproct are tongue-shaped, both parts haired ( Fig. 51 ). Hypoproct is almost triangular, with miniature microsetae, epiproct approximately semicircular, longly setose. Epandrial clasping lobes almost cylindrical, a little strengthened basally, haired and inconspicuously bent ( Figs. 51, 52 ), 1.8 times as long as epandrium ( Fig. 52 ), with 12–13 tenacula, frayed apically ( Fig. 51 ).

Female. Head with eyes separated, formed by 3 facet rows and frons 1.5 times wider than facet diameter ( Fig. 41 ). Wings approximately similar to males, paratypes 1.9–2.2 mm long, allotype 1.9. Wing index 3.0. Ratios of lengths of femora, tibiae and first tarsal segments P 1 1.9:2.0:1.0, P 2 2.2:2.9:1.3, P 3 2.2:3.1:1.3. Ovipositor 2.8 times as long as basis ( Fig. 55 ), a little bent, paired cerci with rounded ending and an inner folding membrane ( Fig. 54 ). Subgenital plate ( Figs. 46, 47 , 53 ) V-shaped, bilobed distally with very deep caudal concavity and prolonged basis in a horizontal axis, generally almost elliptic, of which sides are triangular (right angle). Setae are not developed near margins of basal elliptic part in contrast to distal one, which has numerous microsetae. Sensory organ developed, digitate. A trapezoidal tablet inside of genital chamber not developed and lateral inner lobuli are almost oblong-shaped distally. Genital chamber ( Figs. 47, 48 , 53 ) from dorsal view with two pointed stilts proximally.

Differential diagnosis. Iranotelmatoscopus kenyensis sp. nov. is morphologically similar to I. hajiabadi Ježek, 1987 , however, male characters are quite different: index of distance of tangential points of apices of eyes to facet diameter 10.0 ( Fig. 34 ), length ratio of maxillary palps 1.0:1.1:1.3:1.5 ( Fig. 36 ), last segment of maxillary palp not annulate ( Fig. 36 ), medial wing angle 180° ( Fig. 57 ), wing index 2.6 ( Fig. 57 ), sclerotized ribs of ejaculatory apodeme distally in number three ( Fig. 40 ), conspicuous flaps on both sides of racquet-shaped aedeagus developed ( Figs. 40 , 45 ) and doubled epandrial aperture ( Fig. 51 ). Female characters are as follows (see only Fig. 47 ): digital sensory organ of subgenital plate developed, performed trapezoidal tablet of subgenital plate not developed, lateral inner lobuli distally oblong-shaped and proximal stils of genital chamber from dorsal view in number two.

On the other hand, males of I. hajiabadi have index of distance of tangential points of apices of eyes to facet diameter 7.6, length ratio of maxillary palps 1.0:1.2:1.4:2.1, last segment of maxillary palp annulate, medial wing angle 199.5°, wing index 2.2, sclerotized ribs of ejaculatory apodeme distally in number two, conspicuous flaps on both sides of racquet-shaped aedeagus not developed and single epandrial aperture.

Female characters are: digital sensory organ of subgenital plate not developed in contrast to presence of perforated trapezoidal tablet of subgenital plate, lateral inner lobuli distally tongue-shaped and only one proximal stil of genital chamber from dorsal view.

Type material. Holotype ♂: Equatorial Africa : Kenya, Nyangera, Victoria Lake environment, 1 141 m a.s.l. ( Fig. 59 ), 0°3ꞌ 56.296ꞌ ꞌ S, 34°4ꞌ 53.251ꞌ ꞌ E, 6.xii.2003 – 3.iii.2004, Malaise trap, I. Přikryl et al. leg. Slide with a dissected specimen, Cat. No. 34759, Inv. No. 24220 ( NMPC).

Paratypes 6 ♂, 5 ♀ (slides): The same locality, method, collector and date, Cat. No. 34760–34770, Inv. No. 24221–24231, the last two series numbers represent allotype (all NMPC). Supplemented paratypes 5 ♂, 5 ♀ (slides): same, 14.ix.–10.x.2003, Cat. No. 34771–34780, Inv. No. 24232–24241 ( NMPC). Additional paratypes 5 ♂, 5 ♀ (slides): same, 10.x.–6.xii.2003, Cat. No. 34781–34790, Inv. No. 24242–24251 ( NMPC). Another paratypes : 2 ♂, 6 ♀ (slides): Kenya, Kusa , Victoria Lake environment, 1 146 m a.s.l., 0°19ꞌ 25.799ꞌ ꞌ S, 34°50ꞌ 11.561ꞌ ꞌ E, Malaise trap, I. Přikryl et al. leg., 14.ix.–4.x.2003, Cat. No. 34791–34798, Inv. No. 24252– 24259 ( NMPC). Different paratypes : 5 ♀ (slides), same, 26.xii.2003 – 4.iv.2004, Cat. No. 34799–34803, Inv. No. 24260–24264 ( NMPC). In addition, one male paratype from Uganda, Gaba, Victoria Lake environment, 1 137 m a.s.l. ( Figs. 58 , 60 ), 0°14ꞌ 59.763ꞌ ꞌ S, 32°38ꞌ 13.318ꞌ ꞌ E, Malaise trap, I. Přikryl et al. leg., 17.vii.–20.viii.2004, Cat. No. 34804, Inv. No. 24265 ( NMPC). Above mentioned slides are often with dissected specimens .

Type locality. Equatorial Africa: Kenya, Nyangera, Victoria Lake environment.

Etymology. The new species name is the Latinized adjective kenyensis (-is, -e) based on the country of origin.

Bionomics. Unknown. Adults were collected in wetland rushes of margins of the water body with rapidly growing Cyperus papyrus L. ( Fig. 58 ).

Distribution. This species is known only from Equatorial Africa—Kenya and Uganda.

Figures

FIGURE 58. Malaise trap for monitoring of insect activities. Uganda, Gaba, 17.ix.2004. Photo by Ivo Přikryl.

FIGURE 59. Wetland rushes of margins of the water body with a growth of Cyperus papyrus L. Kenya, Nyangera, 15.i.2002. Photo by Ivo Přikryl.

FIGURE 60. The water hyacinth growth Eichhornia crassipes (Mart.) Solms in a litoral zone of Africa´s largest Victoria Lake. Uganda, Gaba, 17.i.2002. Photo by Jan Pokorný.

FIGURES 34–40. Iranotelmatoscopus kenyensis Ježek & Oboňa sp. nov. male. 34. Head, frontal view. 35. Frons and facets in detail, frontal view. 36. Maxilla and palpus maxillaris. 37. Thoracic sclerites, lateral view. 38. Haltere, lateral view. 39. Gonopod, dorsal view. 40. Aedeagal complex, dorsal view. [Scale: 37 = 0.2 mm; 34–36, 38–40 = 0.1 mm]

FIGURES 41–48. Iranotelmatoscopus kenyensis Ježek & Oboňa sp. nov. male (42–45) and female (41, 46–48). 41. Frons and facets in detail, frontal view. 42. Scape, pedicel and basal flagellomeres. 43. Left terminal lobe of labium. 44. Gonopod, lateral view. 45. Aedeagal complex, lateral view. 46. Subgenital plate, lateral view. 47. Subgenital plate and genital chamber, dorsal view. 48. Genital chamber anteriorly. [Scale: 41–48 = 0.1 mm]

FIGURES 49–55. Iranotelmatoscopus kenyensis Ježek & Oboňa sp. nov. male (49–52) and female (53–55). 49. Cibarium, labrum and epipharynx, diagonal view. 50. Tarsal claw of P 1, lateral view. 51. Epandrium and epandrial clasping lobes, dorsal view. 52. Epandrium and epandrial clasping lobes, lateral view. 53. Subgenital plate and genital chamber, lateral view. 54. Ovipositor, dorsal view. 55. Same, lateral view. [Scale: 49, 52–55 = 0.1 mm; 50 = 0.05 mm]

FIGURES 56–57. 56. Hemimormia nyangerensis Ježek & Oboňa sp. nov. male wing (photo). 57. Iranotelmatoscopus kenyensis Ježek & Oboňa sp. nov. male wing (photo). [Scale: 56, 57 = 1 mm]