Leluthia ( Leluthia ) abnormis, Belokobylskij, 2020

Leluthia ( Leluthia) abnormis sp. nov.

( Figs 1, 2)

Holotype. Female , Yemen, “Yemen (4055), Al Kowd, ix 1999, light-trap, A.v. Harten & S. Al Haruri, RMNH’00” ( RMNH).

Paratypes. 1 female, 4 males, with label as in holotype ( RMNH, ZISP) ; 3 females, 5 males, “ Yemen (4054), Al Kowd , viii 1999, light-trap, A.v. Harten & S. Al Haruri, RMNH’00” ( RMNH, ZISP) ; 3 females, 1 male, “ Yemen (3901), Al Kowd , vii 1999, light-trap, A. v. Harten & S. Al Haruri. RMNH’00” ( RMNH) ; 1 female, “ Yemen (6141), Al Kowd , 16–20.viii.2001, light trap, A. v. Harten & S. Al Haruri. RMNH’02” ( RMNH) ; 1 female, “ Yemen (8136), Al Kowd , ix.2003, light trap, A. v. Harten, S. Al Haruri, RMNH’03” ( RMNH) ; 7 females, 1 male, “ Yemen (5404), Hammam ‘ Ali , from coffee-berries (with Ceratitis capitata ?), 14.iii.2001, A.v. Harten, RMNH’02” ( RMNH, ZISP) ; 5 females “ Yemen, Al Kowd , v–vi.2000, light-tr., no 4719, A.v. Harten & S. Al Haruri, RMNH’01” ( RMNH, ZISP) ; 1 female, “ Yemen, Al Kowd , vii.2000, light tr., no 4820, A. v. Harten & S. Al Haruri, RMNH’01” ( RMNH) ; 1 female, “ Yemen (5750), Al Kowd , 8–12.vii.2001, light trap, A. v. Harten & S. Al Haruri. RMNH’02” ( RMNH) ; 2 males, “ Yemen (8136), Al Kowd , ix.2003, light trap; A. v. Harten & S. Al Haruri. RMNH’02” ( RMNH) ; 1 male, “ Yemen, Al Kowd , viii.2000, light-tr., no 4952, A.v. Harten & S. Al Haruri, RMNH’01” ( RMNH) ; 2 males, “ Yemen, Al Kowd , v–vi.2000, light-tr., no 4719, A.v. Harten & S. Al Haruri, RMNH’01” ( RMNH) ; 1 male, “ Yemen, Ta’izz, viii.1999, light tr., A. v. Harten & A Awad, RMNH’01” ( RMNH) .

Description. Female. Body length 2.7–3.1 mm; fore wing length 1.6–1.8 mm.

Head distinctly or rather strongly depressed dorsoventrally, its width (dorsal view) 1.6–1.7 times median length, equal to width of mesoscutum. Occiput distinctly concave. Head behind eyes (dorsal view) distinctly roundly narrowed. Transverse diameter of eye 2.0–2.2 times longer than temple. Ocelli arranged in very obtuse triangle with base 1.6–1.7 times its side; POL 2.4–2.9 times OD, 1.5–1.8 times OOL. Eye large, oblique, glabrous, 1.15–1.25 times as high as broad, very weakly concave opposite antennal socket. Malar space 0.20–0.25 times eye height, 0.6–0.7 times basal width of mandible. Face width 0.8–0.9 times eye height and 1.5–1.7 times height of face and clypeus combined. Malar suture absent. Clypeus rather narrow and high. Hypoclypeal depression subcircular, its width 1.0–1.3 times distance from edge of depression to eye, 0.35–0.40 times width of face. Occipital carina not joined with hypostomal carina, being obliterated ventrally a short distance above base of mandible. Hypostomal flange very narrow.

Antennae rather thick, filiform, 17–20-segmented, 0.6–0.7 times as long as body. Scape 1.5– 1.6 times longer than maximum width, 1.5–1.7 times longer than pedicel. First flagellar segment 4.4–4.6 times longer than its apical width, 1.1–1.2 times longer than second segment. Penultimate segment 2.0–2.2 times longer than its width, 0.5– 0.6 times as long as first segment, 0.85–0.90 times as long as apical segment; the latter acuminate apically and with short spine.

Mesosoma distinctly or sometimes strongly dorsoventrally depressed, it length 3.2–4.0 times its height. Neck of prothorax weakly elongate, distinctly convex dorsally (lateral view), with distinct pronotal keel in anterior 0.3. Mesoscutum (lateral view) weakly and curvingly elevated above pronotum; its width (dorsal view) 1.15–1.20 times median length. Notauli shallow to very shallow, almost complete, narrow, subparallel (not or weakly convergent posteriorly) on dorsal surface, finely rugulose-reticulate. Median lobe of mesoscutum (dorsal view) weakly convex anteriorly, with distinct but shallow median furrow in anterior 0.5–0.6. Prescutellar depression (scutal sulcus) shallow, with seven–nine short carinae, finely rugulose between carinae, 0.30–0.35 times as long as scutellum. Scutellum flat, transverse, with distinct short carinae laterally, 2.0–2.2 times wider anteriorly than its median length. Subalar depression shallow, narrow, reticulate-coriaceous. Sternaulus rather shallow, almost straight, finely reticulate-coriaceous, running along entire length of lower part of mesopleuron. Metapleural flange rather narrow, short and rounded apically. Propodeum without lateral tubercles.

Wings. Length of fore wing 3.0–3.4 times its width. Metacarp (1-R1) 1.2–1.3 times longer than pterostigma. Radial (marginal) cell 3.0–3.3 times longer than maximum width. Radial vein (r) arising weakly before middle of pterostigma, from its basal 0.45. First radial abscissa (r) 0.2 times as long as weakly and evenly curved second abscissa (3-SR + SR1), 0.8–1.0 times as long as first radiomedial vein (2-SR). Second radiomedial vein (r-m) always absent. First medial abscissa (1-SR+M) weakly sinuate. Recurrent vein (m-cu) antefurcal, 1.8–2.8 times longer than second abscissa of medial vein (2-SR+M). Distance from nervulus (cu-a) to basal vein (1-M) 1.2–1.3 times nervulus (cu-a) length. Hind wing 4.4–4.6 times longer than wide. First abscissa of costal vein (C+SC+R) 0.7–1.0 times as long as second abscissa (1-SC+R). Basal vein (1r-m) 1.0–1.3 times as long as third costal abscissa (2-SC+R). Medial (basal) cell narrow, weakly widened posteriorly, 8.0–9.0 times longer than wide. First abscissa of mediocubital vein (M+CU) 1.5–2.0 times longer than second and third abscissae combined (1-M). Recurrent vein (m-cu) almost straight, distinctly oblique towards base of wing, antefurcal, unsclerotised.

Legs. Hind femur 3.0–3.2 times longer than wide. Hind tibia distinctly widened. Hind tarsus 1.1 times longer than hind tibia. Hind basitarsus weakly thickened, 0.45–0.50 times as long as second–fifth segments combined. Second segment of hind tarsus 0.50–0.55 times as long as basitarsus, about 1.3 times as long as fifth segment (without pretarsus).

Metasoma 1.2–1.4 times longer than mesosoma and head combined. First metasomal tergite short and wide, with small spiracular protuberances in anterior third, distinctly and almost linearly widened from base to subapex, then weakly narrowed towards apex. Length of first tergite 0.85–0.90 times its maximum subapical width; apical width 0.90–0.95 times its subapical width, 2.5–3.0 times its minimum anterior width. Second tergite very short medially and rather long laterally, practically without visible oblique sublateral depressions. Median length of second tergite 0.25–0.30 times its maximum lateral length, 0.10–0.15 times its basal width, 0.15–0.20 times length of third tergite. Second suture distinct, but narrow, deeply curved, not sinuate and without sublateral breaks. Third tergite without additional transverse furrow. Ovipositor sheath 0.30–0.35 times as long as metasoma, 0.55–0.60 times as long as mesosoma, 0.35–0.40 times as long as fore wing.

Sculpture and pubescence. Vertex and frons entirely densely and finely reticulate-coriaceous, sculpture on frons arranged in transverse lines; face mainly smooth with sparse and fine to very fine setose punctuation; temple almost entirely smooth. Mesoscutum densely and rather finely granulate-coriaceous, only coriaceous anteriorly, densely rugulose-reticulate in wide area in medioposterior 0.7–0.8. Scutellum rather distinctly densely granulate. Mesopleuron almost entirely densely reticulate-coriaceous, fine below. Metapleuron entirely densely rugose-reticulate. Propodeum without areas delineated by carinae, entirely and densely rugose-reticulate, partly smooth posteriorly. Hind coxa mainly reticulate-coriaceous, dorsally additionally finely striate. Hind femur densely and finely reticulate-coriaceous. First metasomal tergite entirely and rather distinctly longitudinally striate, with very dense reticulation between striae, with two distinct and subparallel dorsal carinae in anteri- or half. Second and third tergites almost entirely and rather densely striate and with dense and fine rugulosity between striae, striae laterally curved towards sides of tergites; third tergite smooth at distal margin. Fourth to sixth tergites mainly densely and finely reticulate-coriaceous, smooth at distal margins. Vertex mainly glabrous medially in wide area, with sparse, short and semi-erect pale setae laterally and posteriorly. Mesoscutum partly glabrous, with sparse, long and semi-erect white setae in medio-posterior area, with dense pale setae anteriorly along notauli, with rather sparse and semi-erect pale setae arranged in single line laterally. Mesopleuron medially widely glabrous. Hind tibia dorsally with medium length and rather sparse semi-erect pale setae, their length about 0.5 times maximum width of tibia.

Colour. Body mainly yellowish brown, faintly infuscate dorsally. Antenna basally yellow to brownish yellow, brown to dark brown in distal quarter or fifth. Palpi pale yellow. Legs mainly pale yellow. Ovipositor sheath almost black, brown anteriorly. Fore wing hyaline. Pterostigma pale brown, yellow basally and apically.

Male. Body length 1.6–2.6 mm; fore wing length 1.1–1.7 mm. Antenna 15–19-segmented. Mesosoma 2.1–4.0 times longer than its maximum width. Hind wing with large sclerotised brown stigma-like enlargement, its length 1.2–1.4 times distance from base of wing to base of enlargement. First metasomal tergite usually narrower than in female, its length 1.0–1.1 times its maximum width. Median length of second tergite about 0.4 times its maximum lateral length, 0.30– 0.35 times its basal width, 0.2–0.3 times length of third tergite. Metasomal sculpture sometimes finer. Otherwise similar to female.

Etymology. Named from Latin “abnormis ” (anomalous) because the structure of its second metasomal tergite is unusual for the genus.

Comparative diagnosis. The new species distinctly differs from all the known species of Leluthia ( Leluthia) in the Old Word fauna by its subparallel notauli on the dorsal part of mesoscutum, its strongly curved and without sublateral breaks second metasomal suture, and the second metasomal tergite being very short medially but rather long laterally and without sublateral longitudinal furrows.

Distribution. Yemen.