Alepia bifida, Tkoč & Ježek & Pont, 2017

Tkoč, Michal, Ježek, Jan & Pont, François Le, 2017, Alepia bifida, a new species of moth flies from Central America (Diptera: Psychodidae: Psychodinae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 57 (2), pp. 765-774: 766-772

publication ID

http://doi.org/ 10.1515/aemnp-2017-0099

publication LSID

lsid:zoobank.org:pub:27FC96A5-11A0-478C-B9C2-1514BDB0D45E

persistent identifier

http://treatment.plazi.org/id/03AA7400-3B3D-FFE3-FE0B-098BFD06C18C

treatment provided by

Marcus

scientific name

Alepia bifida
status

sp. nov.

Alepia bifida   sp. nov.

( Figs 1–27 View Figs 1–6 View Figs 7–10 View Figs 11–18 View Figs 19–27 )

Type locality. Nicaragua , Matagalpa Department, Río Blanco , Cerro Musún , 620 m a.s.l., 12°57′18″N, 85°13′48″W. Type material. HOLOTYPE: ♂, NICARAGUA: DEPARTAMENTO DE MATAGALPA: Río Blanco , Cerro Musún Natural Reserve, station Marena Lodge – Río Blanco road, 620 m a.s.l., 12°57′18″N, 85°13′48″W, v.–vi.2009, F. Le Pont leg. ( NMPC: slide Cat. No. 34702, Inv. No. 22614, dissected). ALLOTYPE: 1 ♀, same data as holotype ( NMPC: slides Cat. No. 34706, Inv. No. 22618, dissected). PARATYPES: 4 ♂♂ 1 ♀, same data as holotype ( NMPC: slides Cat. No. 34703–34705, 34707, Inv. No. 22615–22617, 22619, mostly dissected; number 34705/22617 = slide with one shallow depression and two non-dissected specimens) GoogleMaps   .

Description. Male. Eyes separated ( Fig. 11 View Figs 11–18 ), frontal suture largely U-shaped with central triangular ligament with concave sides. Eye bridge formed by three facet rows, the number of facets in the apices (not pointed as in female) is more reduced. Number of antennomeres 16.

Scape 2.4 times as long as pedicel, cylindrical, narrower basally, pedicel almost globular, pressed in longitudinal axis ( Fig. 12 View Figs 11–18 ). Flagellomeres bowl shaped, apical ones missing. Length ratio of maxillary palpomeres 1.0: 1.9: 2.2: 2.2, palpomere 4 not annulate ( Fig. 15 View Figs 11–18 ). Terminal lobes of labium, cibarium and epipharynx as in Figs 2 View Figs 1–6 and 16 View Figs 11–18 . Thoracic sclerites as in Fig. 19 View Figs 19–27 . Wings sharply pointed, maculated, spots on veins as well as wing membrane very dark and conspicuous ( Fig. 3 View Figs 1–6 ), 2.1–2.5 mm long in holotype and male paratypes. Completely strengthened veins: Sc, R1, CuA1, CuA2 strenghtened basally. Radial, medial and cubital veins black spotted at the end, as well as radial and medial forks, basal cell and basis of M3 and CuA1. Basal costal nodes well visible, Sc uninterrupted, M3, CuA1 and CuA2 not touching at basis of wing. R5 extends in the apex of the wing. Radial and medial forks complete, cross veins missing. The wing margin reaching CuA2 is a little distad of medial fork, medial fork conspicuously distad of radial fork. Medial wing angle 222° (BCD). Wing indices: AB: AC: AD = 3.7: 3.6: 4.5; BC: CD: BD = 1.0: 1.0: 1.9; maximum wing length equal to 2.7 times its maximum width. Halteres clubbed ( Fig. 20 View Figs 19–27 ), with a maximum length equal hardly to 4.1 times its maximum width. Ratios of lengths of femora, tibiae and first tarsomeres: P1 = 1.8: 1.7: 1.0; P2 = 2.0: 2.4: 1.2; P3 = 2.0: 2.7: 1.3; fore claws bent and pointed distad ( Fig. 21 View Figs 19–27 ). Aedeagal complex as in Figs 17, 18 View Figs 11–18 , 22 View Figs 19–27 , basiphallus almost straight and narrow from lateral view, however, with a U-shaped loop proximally before apex ( Figs 18 View Figs 11–18 , 22 View Figs 19–27 ). Basiphallus very widened and pressed distally, S-shaped, with small blunt teeth, backward oriented. Distiphallus prolonged by bent bifid arm, spanner- or bottle-opener shaped ( Figs 18 View Figs 11–18 , 22 View Figs 19–27 ), from which one protuberance is blunt in contrast to very pointed hooked tip. Aedeagal complex overlaid basally by a large hyaline bell-shaped tunica (hypandrium), distinctly narrowed in the middle (lateral view), quite bare ( Figs 17, 18 View Figs 11–18 , 22 View Figs 19–27 ). Tunica is articulated proximally to basiphallus and protuberances of gonocoxites. Gonocoxites almost cylindrical, only slightly expanded medially, 1.3 times shorter than gonostyli ( Figs 17, 18 View Figs 11–18 , 23 View Figs 19–27 ), both parts with setae. Gonostyli hardly S-shaped in dorsal view, sticky, sickle-shaped from lateral view, subapically inconspicuously inflated and tapered to a narrow, blunt tip. Epandrium bare, with an inconspicuous operculum in dorsal view ( Fig. 24 View Figs 19–27 ), well visible from lateral view ( Fig. 25 View Figs 19–27 ). Ventral plate of epandrium reduced to only two sclerotized converging ribs jointed with surstyli ( Fig. 24 View Figs 19–27 ). Hypandrium hyaline, lateral margin of 9th sternite grows together or connected with proximal border of epandrium and proximal protuberance of gonocoxite. Epiproct transversal as a fold, hardly visible, hypoproct shortly tongue-shaped, both parts with microsetae ( Fig. 24 View Figs 19–27 ). Surstyli almost circular basally, gradually tapering caudally ( Figs 24, 25 View Figs 19–27 ), with numerous accessory tenacula in a dark elliptical area near the base of surstyli ( Figs 24–27 View Figs 19–27 ), subapically with one tenaculum ( Figs 24, 25 View Figs 19–27 ).

Female. Eyes separated ( Fig. 1 View Figs 1–6 ), frontal suture triangular, frons bare, frontoclypeus with insertions of setae arranged in two oval areas touched on the level of antennal bows and divergent near tentorial pits. The minimum distance between eyes corresponds approximately to the diameter of two facets. Eye bridge formed by three facet rows, the number of facets in the pointed apices being more reduced. Vertex rounded, occipital lobe small, with a shallow indentation apically and a sclerotized rim. Scape twice as long as pedicel, cylindrical, gradually narrower basally, pedicel globular ( Fig. 13 View Figs 11–18 ). Flagellomeres spindle-shaped, narrow ( Figs 13, 14 View Figs 11–18 ), apical ones missing. Ascoids simple, paired, needle-shaped ( Fig. 14 View Figs 11–18 ). Terminal lobes of labium, cibarium and epipharynx as in Fig. 1 View Figs 1–6 . Wing shape and maculation similar to male, length 2.4–2.5 mm (allotype and female paratype). Ratios of lengths of femora, tibiae and first tarsomeres: P1 = 2.0: 1.8: 1.0; P2 = 2.2: 2.6: 1.3; P3 = 2.3: 3.1: 1.4. Genitalia as figured ( Figs 4, 5 View Figs 1–6 , 7–10 View Figs 7–10 ). Subgenital plate ( Figs 4 View Figs 1–6 , 7–9 View Figs 7–10 ) bilobed, with a shallow concavity caudally, with densely spaced microtrichia and sparsely covered by long setae. Genital chamber ( Figs 7–10 View Figs 7–10 ) with simple structures, without net- or wart-like decoration. Cerci almost triangular and slightly bent, three times longer than its bases ( Figs 5 View Figs 1–6 , 7, 8 View Figs 7–10 ), rounded caudally, setose, connected by a wrinkled membrane ( Fig. 5 View Figs 1–6 ).

Egg. Three times as long asmaximum width, with characteristic wrinkled structures ( Figs 6 View Figs 1–6 , 7 View Figs 7–10 ). Differential diagnosis. Alepia bifida   sp. nov. is morphologically similar to A. recurva Bravo, Lago & Castro, 2004   from Brazil. However, wing characters, basiphallus, distiphallus and gonostyli show distinct differences (see the Table 1).

Etymology. Named after the shape of the bifurcated distiphallus (Lat. bifidus, -a, -um = bifid).

Biology. Unknown. Adults were collected by light trap in the forest on the slopes of Cerro Musún Mt.

Distribution. Currently recorded only from Nicaragua.

NMPC

National Museum Prague

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Psychodidae

Genus

Alepia