Lasiopa aktasii, Üstüner, Turgay & Hasbenli, Abdullah, 2014

Üstüner, Turgay & Hasbenli, Abdullah, 2014, Two new species of LasioPa (Diptera, Stratiomyidae) from Turkey, Zootaxa 3815 (1), pp. 119-130 : 122-123

Lasiopa aktasii sp.n.

Figs. 12–22

Holotype: Turkey: Kayseri, Yahyalı, Derebag Village, elev. 1400 m, 26 July 1993, 1 male, Hasbenli leg.

Paratypes: Turkey: Kayseri, Yahyalı, Derebag Village, elev. 1400 m, 26 July 1993, 1 male, 1 female, Hasbenli leg. Kayseri, Yahyalı, Derebag Village (Derebag waterfall vicinity), elev. 1250 m, 14 July 2002, 5 males, Üstüner leg. Kayseri, Sarız, Ayranlık köyü, 1600 m, 25 July 2003, 1 female, Üstüner leg. Kayseri, Sarız, Ayranlık köyü, 1616 m, 20 July 2005, 1 male, Hasbenli leg.

Diagnosis. Antenae relatively short and slender, basal segments black, flagellomeres reddish brown; apical part of flagellomere 4 and two following ones with short black hairs. Last flagellomere stout, conical, with short hairs. Postpronotal calli pale yellow. Legs black but knees and basitarsi yellow. Medial process of genital capsule with short branches without membrane between them, genital capsule with prominent outer basal projection in lateral view. Female head black, with a pair of yellow frontal spots and elongate postocular spots.

Description. Male ( Figs 12–15 ). Length: body 9.0–9.5 mm, wing 6.0–6.5 mm. Head black, almost hemispherical in lateral view. Eyes with dense brown hairs, about 0.5 times as long as scape. Frons parallel-sided, narrow, length subequal to pedicel. Frontal index about 4.5. Frons and face black, face only slightly prominent in dorsal and lateral views. Postocular area in lower half as wide as scape length. Antennae relatively short and slender, about 1.10–1.13 mm long, about 0.85 times as long as head, antennal index about 1.66. Basal segments black, almost equal: scape and pedicel each about 0.2 mm long. Flagellum consisting of 6 flagellomeres, about 0.7 mm long. Flagellomeres reddish brown; apical part of flagellomere 4 and two last flagellomeres dark brown; apical part of flagellomere 4 and two following ones with short black hairs. Flagellomere 4 about as long as flagellomere 3. Last flagellomere stout, conical, with short hairs. Last two flagellomeres about 0.24 mm long, about 1.2 times as long as scape. Head pile as long as scape is long, fine, mostly erect, greyish to white. Proboscis short and enlarged.

Thorax black, punctate, only anterior half of anepisternum bare and shinning. Postpronotal calli pale yellow. Thoracic pile whitish, mostly erect, fine and longer than scape. Legs: coxa and femur black but knees, posterior tip of femur, anterior third of tibia and basitarsi yellow, last 4 tarsal segments darkened on external surface, orangeyellow in internal surface. Wings slightly brownish infuscated, stronger veins yellowish brown. Halter pale yellow, with basal third of stem darkened.

Abdomen black, with 3 pairs of narrow lateral markings on posterior margins of tergites 2–4, posterior margin of tergite 5 also yellow. Inner end of each spot almost rounded. Venter black, with yellow lines at posterior margin of sternites 3–4. Abdominal pile shorter than thoracic pile and mostly inconspicuous, adpressed, whitish dorsally and ventrally. Male teminalia ( Figs. 18–22 ): epandrium shorter than that of L. krkensis and L. balius ( L. manni group) and swollen at lateral sides; proctiger elongate-oval. Medial process of genital capsule with short branches without membrane between them and stouter than in L. manni an L. krkensis , genital capsule with prominent outer basal projection in lateral view and slightly longer than dorsal process of genital capsule in lateral view. Aedeagal complex long, sickle-like in lateral view, simple, almost parallel-sided, and lateral parts separated almost to basal third of complex.

Female ( Figs. 15–17 ). Length: body 9.0–9.5 mm, wing 6.0–6.5 mm. Head black, with a pair of yellow frontal spots and elongate postocular spots. Frons occupying about 2/5 of head width (about 1: 2.45 mm), somewhat enlarged above antennae. Eyes short, with moderately dense dark hairs. Postocular band about as broad as scape is long. Face prominent in lateral view. Antennae as in male, but thickened in middle. Head pile silvery white, short, mostly adpressed, long and erect ventraly.

Thorax as in male. Postpronotal calli large yellow. Postalar calli with yellow spots. Yellow spot present at point of confluence of transverse suture and notopleural suture on scutum and wing base. Short adpressed pale thoracic pile whitish grey.

Abdomen as in male, with usual yellow lateral markings on tergites 2–4, posterior margin of tergite 5 also yellow. The yellow abdominal lateral markings and yellow line on tergum 5 wider than in male, reaching almost 1/ 2 of tergite length and connected along abdominal margin on tergites 2–4. Venter black, with yellow lines on posterior margin of sternites 3–5.

Etymology. The species is named in honor of the late Prof. Dr. Metin Aktaş, a prominent Turkish entomologist who contributed significantly to the knowledge of Turkish and Palaearctic insect species.

Figures

FIGURES 12 – 17. Lasiopa aktasii sp. n. holotype 12 — Male, dorsal view 13 — Male, lateral view 14 — Male, antenae; 15 — Female, dorsal view 16 — Female, lateral view 17 — Female, antenae.

FIGURES 18 – 22. Lasiopa aktasii sp. n. holotype male genitalia: 18 — Proctiger, cerci and epandrium, ventral view 19 – 20 — Genital capsule, dorsal and lateral view 21 – 22 — Aedeagal complex in dorsal and lateral view.