Achyrolimonia neonebulosa ( Alexander, 1924 )

Podenas, Sigitas & Byun, Hye-Woo, 2014, New Limoniinae crane flies (Diptera: Limoniidae) of Korea, Journal of Species Research 3 (2), pp. 167-182 : 169-170

Achyrolimonia neonebulosa ( Alexander, 1924)

Dicranomyia nebulosa Alexander, 1913: 203 . Limonia neonebulosa Alexander, 1924: 555 . Dicranomyia delicatula Lackschewitz, 1964: 714 . Dicranomyia (Dicranomyia) neonebulosa : Savchenko,

1985: 75. Achyrolimonia neonebulosa : Stary, 1981: 116.

General color yellowish-brownish gray. @ody length of male about 6.8 mm. Wing length of male 7.0 to 8.0 mm.

Head blackish, posteriorly covered with pruinosity. Eyes very large, nearly reaching each other above bases of antennae and on ventral side of head. Vertex very narrow, slightly rised, with long setae. Posteriorly head bears distinctly shorter setae. Length of male antennae 1.55-1.60 mm, nearly reaching wing base, if bent backwards. Scape nearly cylindrical, dorsally dark brown, ventrally reddish brown at base, turning yellow distally. Pedicel short, widening distally, grayish yellow. Flagellum 12-segmented, brown. Flagellomeres with distinct apical pedicels. @asal flagellomeres rounded, somewhat lighter than remaining segments, distal flagellomeres oval, apical segment very long and narrow, nearly twice as long as preceding segment. Verticils brown, approximately as long as respective segments, just on apical segment they are twice as short as segment itself. Short whitish pubescence covers whole flagellum. Rostrum dark brown, with blackened margins, distal end whitish. Palpus short, same color as rostrum, covered with erect brown setae. Mouth parts whitish.

Thorax with distinct brown spots, which are more dense dorsally and yellow areas, which are more concentrated ventrally. Pronotum dark brown dorsally, yellowish laterally. Ground color of mesonotal prescutum brown. Dorsal prescutal stripe wide and distinctly yellow or brownish yellow on brown background. Longitudinally stripe divided by narrow brown line which is darker and wider frontally. Lateral prescutal stripes less distinct, somewhat arched, wider and more distinct posteriorly. Scutal lobe brown with distinct yellow stripe along median margin. Stripe rimmed by brown along median margin. @oth scutal lobes separated by light yellow area. Ground color of scutellum yellow with distinct brown drop-shaped area extending medially. It is narrow frontally, turning wider posteriorly. Posterior margin of scutellum darkened. Mediotergite brown with slightly darkened margins and indistinct longitudinal line medially. Pleura generally yellowish-brownish gray. Anepisternum uniformly brownish gray, just margin posteroventrally first thoracical spiracle distinctly dark brown. Katepisternum yellow with dorsal part somewhat infuscated, bearing few brown setae. Anepimeron yellow. Dorsal margins of anepisternum and anepimeron, just below wing base, distinctly darkened. Laterotergite brownish gray. Posterior spiracle surrounded by dark brown margin. Ventral side of thorax yellow with distinct right angled elongate dark brown spot right behind frontal coxae. Wing ( Fig. 1A) grayish, costal and subcostal cells, together with wing base brownish yellow. Distinct dark brown spots at origin of Rs, at branching point of Rs, at tip of Sc, and at tip of R 1. All cross-veins at distal wing end surrounded by dark areas. Smoky spots are in all cells and along Cu. Veins Sc, basal part of R and basal part of Cu yellow, remaining veins brown. Venation: Sc 1 long, reaching to the level of Rs branching point, Sc 2 close to Sc 1 tip. R 2 close to R 1 tip, sometimes beyond it. Rs long, and distinctly arched. R 3 and R 4 long and parallel to each other and both slightly arched. Discal cell large, about twice as long as wide. @asal deflection of CuA 1 at branching point of M. @oth anal veins long. Second anal vein slightly sinuous. Anal angle medium-sized, comparatively narrow, nearly parallel-sided. Length of male haltere 1.05-1.25 mm. Stem of haltere whitish, knob blackened. Frontal coxa brown frontally and yellow posteriorly, second and third coxae yellow. Ventral margins of all coxae darkened. Trochanters yellow with dark brown distal rim. Femur brownish yellow with wide dark brown subapical ring and brownish yellow narrower ring before it. Tip of femur brownish yellow. Tibiae brown with slightly darkened distal end. Tarsus brown, distal tarsomeres blackened. Legs covered with short, semi-erect brown setae. Male femur II: about 7.0 mm, tibiae II: about 6.7 mm, tarsus II: about 6.0 mm long. Claw with single subbasal spine.

Male abdomen generally yellowish gray. Tergites brownish gray, with wide yellow subbasal and subapical spots. First tergite uniformly gray. Dark brown lateral lines extend along whole abdomen. Three basal sternites yellow, remaining sternites yellowish brown to yellowish gray. Male terminalia yellow. Ninth tergite simple, transverse, with shallow wide emargination on posterior margin. Gonocoxite elongate with large ventro-mesal lobe. Outer gonostylus nearly straight, rod-shaped. Inner gonostylus consists of two lobes: dorsal, that is visible in Fig. 1 @, and ventral, that is hiding behind it. Posterior margin of dorsal lobe with small setiferous bump, mesal margin with large rostral lobe, that resembles parrot beak. Rostral spines missing. Ventral lobe fleshy and elongate, slightly narroved at middle. Paramere long and wide with rounded apex. It looks slightly arched, when viewed from side (as in Alexander, 1913, Fig. 9 and Savchenko, 1985, Fig. 48). Penis long and straight.

Elevation range in Korea. Species was collected at the altitude of 630 m.

Period of activity. Adults were collected at the end of June in Korea.

Habitat. Specimens were collected at light in a small hotel, which was surrounded by agricultural fields with irrigation channel. Forest was at the far end of the field. According to Savchenko (1985), adults are found in wet broad leaved and mixed forests and in Eriophorum - Carex community in marsh surrounded by pine forest in Ukraine.

General distribution. Species has wide holarctic distribution and is found in three disjunct areas: East Palearctic, West Palearctic and Nearctic ( Oosterbroek, 2014).

Examined materials ( Fig. 7A ): 2@@ (preserved in ethanol), S. Korea, Pyeongchang-gun, Gangwon-do, at the entrance to Odaesan National Park , N37.71187, E128.60077, elevation 633 m, 2012.VI.22, S. Podenas, at light. Also compared with the metatype, 1@ (slide-mount- ed), USA, Massachusetts, Amnerat, Oct. 20, 1952 (Alexander) .

Figures

Fig. 7. Distribution maps of Korean Limoniinae crane flies. A. Achyrolimonia neonebulosa. @. Dicranoptycha diacantha. C. Dicranoptycha prolongata. D. Helius (Helius) gracillimus. E. Helius (H.) obliteratus. F. Helius (H.) polionotus.