Gymnancyla (Bazaria) latialata, Tsvetkov, 2021

Tsvetkov, E. V., 2021, Four new species of the subfamily Phycitinae (Lepidoptera: Pyralidae) from Kazakhstan, Zoosystematica Rossica (China) 30 (1), pp. 116-130 : 124-127

Gymnancyla (Bazaria) latialata sp.nov.

( Figs 2, 3, 5, 6, 11, 14, 34–36, 38)

Holotype. Male ; Kazakhstan, Kyzylorda Prov., 14 km NW of Shieli Vill., 44°16′56″N, 66°34′42″E, 7.VII.2019, E. V. Tsvetkov leg. ( ZIN).

Paratypes. 5 males, 2 females; same locality and date as in holotype, E. V. Tsvetkov leg. ( ZIN) .

Description. Length of forewing about 10 mm. Forewing relatively broad, triangular; distal third of costal margin and basal third of hind margin convex, outer margin almost straight; tornus rounded ( Fig. 23).

Antennae nearly 0.75 times the forewing length; cilia 0.5–0.6 times the diameter of flagellomere in males and much shorter in females; male flagellum weakly sinuate; male flagellomeres 1–7 with tiny chitinous vane-like projections; scape 1.6–1.7 times as long as wide, slightly flattened, narrowed at both ends. Labial palpi nearly 1.5 diameters of eye in length, pointed up and ahead, with third segment pointed ahead ( Figs 11 and 14); second segment 2.5 times as long as first segment and slightly broader, its inner side with a longitudinal excavation containing scale tuft of maxillary palpus; third segment tiny, elongate, nearly one-third as long and half as wide as first segment. Maxillary palpi relatively large, nearly 1.5 times as long as first segment of labial palpi, with large brush-like ochreous scale tufts in males (on segments 2 and 3); first segment thin, stick-like; second segment flat and rounded, heavily sclerotised; third segment digitiform, nearly 1.5 times as long and thick as first segment. Frons flat or slightly convex.

Labial palpi, frons (partly), scape and thorax covered with grey white-tipped scales. Legs partly white and partly covered with mixture of white and grey scales. Flagellum chequered (with whitish and grey areas on each segment). Abdomen grey, usually with lighter ventral side. Forewing grey ( Figs 5 and 6); discal spots indistict or weakly defined; antemedial white line angulate, inconspicuous, sometimes indistinct; postmedial line absent or hardly distinct, more contrasting at hind margin; fringe brown, consisting of brown white-tipped scales. Hindwing upperside and underside white with light brown subcostal area and thin brown marginal line; fringe whitish brown with brown stripe basally.

Male genitalia ( Figs 34 and 35). Uncus elongate, rounded apically. Gnathos elongate triangular, flattened dorsoventrally; apex pointed and slightly hooked up. Branches of gnathos very broad at their ends. Transtilla components as small well-sclerotised triangular plates. Juxta V-shaped, its lateral lobes club-like. Valva elongate, nearly constant in width, apically rounded; costal sclerite large, fading in distal half, basally stretched into a heavily sclerotised cranially pointed digitiform projection; well-sclerotised vane-like harpa located basally; sacculus short, narrow, occupying about 0.3 of ventral edge of valva. Vinculum large, elongate, narrowing cranially. Aedeagus cylindrical, slightly flattened; vesica armed with large spine-like cornutus being 0.7–0.8 times as long as aedeagus. Eighth sternum with culcita; anterior margin with median triangular prominence; a pair of lateral processes and a narrow median process located posteriorly ( Fig. 36).

Female genitalia ( Fig. 38). Papillae elongate, densely covered with bristles. Posterior apophyses nearly 0.7 mm; anterior apophyses 0.8–0.9 mm, broader than posterior apophyses, angulate and broadened at their bases. Eighth tergum with straight posterior margin and convex wavy anterior margin. Antrum membranous, ostial crescent sclerite located on dorsal wall. Ductus bursae membranous, thin and short. Corpus bursae elongate, irregularly shaped. Signa small, with several short spines (five spines in examined female specimen).

Comparison. Gymnancyla latialata sp. nov. is easily distinguished from the other species of Gymnancyla by the relatively short and broad forewing and also by its monotonous dark grey coloration. The combination of features in the genitalia (structure of the aedeagus, the valva, the gnathos and the eighth sternum in males; structure of the apophyses, the ductus bursae and the corpus bursae in females) makes it possible to separate the new species from all known species of the subfamily Phycitinae .

Etymology. The name of the new species is an adjective derived from the Latin adjectives latus (broad) and alatus (winged), referring to the forewing of this species, which is relatively broad.

Distribution. The species is known from the Kyzylorda Province of Kazakhstan.

Bionomics. The specimens were collected in the same locality and habitat as two previous species (Addenda: Fig. 41).