Cratyna (Cratyna) ambigua ( Lengersdorf, 1934 )

Shin, Seunggwan, Menzel, Frank, Heller, Kai, Lee, Heungsik & Lee, Seunghwan, 2014, Review of the genus Cratyna Winnertz (Diptera: Sciaridae) in Korea, including the description of a new species, Zootaxa 3794 (3), pp. 344-354 : 345-346

Cratyna (Cratyna) ambigua ( Lengersdorf, 1934)

( Fig. 1 )

Synonyms: Neosciara latiforceps Bukowski & Lengersdorf, 1936 ; Neosciara lignea Lengersdorf, 1941 ; Decembrina prima Frey, 1942 .

Literature: Peyerimhoffia ambigua Lengersdorf—Lengersdorf (1934): 55 . Decembrina prima Frey—Hippa et al. (1998): 12 , Fig.11. Cratyna (Cratyna) ambigua (Lengersdorf) — Menzel & Mohrig (1998): 363.

Redescription. Male. Head: eye bridge 3–4 facets wide. Antenna rough and brown; 4th flagellomere ( Fig. 1 E) 2.5–2.7X as long as wide, with distinct neck. Maxillary palpus ( Fig. 1 D) three-segmented; basal segment with setaeand a patch of sensilla, sensillae long and curved; 2nd segment as long as 1st segment, 3rd segment about 1.0–1.2X as long as 2nd.

Thorax ( Fig. 1 G): brown, with coarse and fine dark brown setae. Posterior pronotum with setae. Scutum with sparse dark setae. Katepisternum slightly wider than high. Wing ( Fig. 1 C) brown; posterior veins and wing membrane without macrotrichia; stem of M as long as M-fork; x = 1.0–1.2X length of y, setae on half of y dorsally; stem of CuA = 1/ 3X length of x; vein R1 = 4/ 5X length of R; R4+5 with macrotrichia dorsally and apicoventrally; vein C = 3/ 4X length of w. Halter short stemmed and dark. Leg pale yellow; apex of foretibia with group of spinelike setae( Fig. 1 F); claws untoothed.

Abdomen: genitalia ( Fig. 1 A) brown, about 2.8X wider than high, without basal lobe; with sparse, stout, setae ventrally; base of gonocoxite semi-circular. Gonostylus ( Fig. 1 B) short and swollen, about 1.2X long as broad, with 2 pairs of evenly curved hyaline spines on medial inner side. Tegmen membranous, rounded and as high as wide, tegmen structures present (semi-circular aedeagal margin). Aedeagus short and slender.

Body length: 2.3–3.0 mm.

Female. Described by Lengersdorf (1941) as Neosciara lignea .

Material examined. KOREA: Gyeunggi-do, Namyangju-si, Choan-myeon, Sonchon-ri, Mt. Ungil, 99 m a.s.l., Malaise trap, 26.vi–16.vii.2009, leg. J. Lim (4♂).

Habitats. Adult specimens are usually collected in woodland and calcareous grassland habitats ( Menzel et al. 2006).

Distribution. New to Korea. Previously recorded from Austria, Bulgaria, Czech Republic, Finland, France, Germany, Great Britain, Greece, Israel, Italy, Luxembourg, Slovakia, Spain, Sweden, Switzerland, Netherlands, Ukraine ( Menzel et al. 2006; Camaño Portela et al. 2008; Heller & Menzel 2013).

Figures

FIGURE 1. Male of Cratyna (Cratyna) ambigua (Lengersdorf, 1934) (A – G) A: Genitalia, ventral. B: Gonostylus, ventral. C: Wing, dorsal. D: Maxillary palpus, anterior. E: 4 th flagellomere, lateral. F: Apical portion of foretibia, anterior. G: Thorax, lateral.