Herina lazi Kameneva & Korneyev

Kameneva, Elena P. & Korneyev, Valery A., 2012, A new species of Herina Robineau-Desvoidy, 1830 (Diptera: Ulidiidae) from Turkey, with the key to species of oscillans group, Zootaxa 3548, pp. 69-74 : 71-74

Herina lazi Kameneva & Korneyev , sp. nov.

Figs 1 –15

Material examined.

Types. Holotype 3: Turkey: “ Turkiye, Trabzon, 21 km S Maçka”, 1450 m, 30.VII.1989 (J.A.W.Lucas) ( RMNH). Paratypes: 1 3 1 Ƥ, label as in the holotype, dissected ( SIZK and RMNH, correspondingly).

Description. Head ( Fig. 1 ): length: height: width ratio = 1: 1.3: 1.4. Frons with matt orange frontal vitta and brown, narrow silver microtrichose orbits. Ocellar triangle and vertical plates shining black. Eye 1.5 times as high as long. Parafacial 0.5 times as wide as flagellomere 1, silver microtrichose. Face entirely subshining yellow, carina straight in profile; antennal grooves subshining yellow. Clypeus yellow, half as high as width of flagellomere 1; antenna and palp mostly yellow; first flagellomere 1.4 times as long as wide, apically brownish yellow, silver microtrichose; arista entirely brown, short pubescent. Palp yellow, slightly widened. Gena brownish-yellow with moderately long setulae, 0.25 times as high as eye. Occiput brown, sparsely white microtrichose at eye margins, shining in the rest. Two vertical, two orbital, one ocellar and one postocellar seta. All setae and setulae black.

Thorax ( Fig. 2 ): Entirely brownish black, except postpronotal lobe, notopleural triangle and scutellum mostly brown or yellowish-brown. Mesonotum with uniformly sparse brownish and grayish microtrichia, which do not obscure shining black cuticle, with poorly expressed darker vittae. Pleura subshining, sparsely whitish microtrichose. Two supra-alar, 2 subequal dorsocentral, and 1 acrostichal seta present. Scutellum subshining brown with 4 strong setae. All setae and setulae black.

Wing ( Fig. 3 ): hyaline with two brown crossbands and three separated spots. Basicostal cell and base of wing posterior of it brownish. Subbasal crossband extending from apical half of costal cell through RS fork to A1 vein.

Pterostigmal crossband from R1 apex crossing r-m and extending slightly over M vein. Vein dm-cu surrounded with isolated spot. Apical spot subtriangular, aligned to costa, posteriorly reaching middle of cell r4+5. Vein r-m slightly proximal of R1 apex. R1 vein setulose only on apical half. Calypters and halter white.

Legs: Yellow, with tibiae and tarsi brownish yellow, moderately setulose (setae and setulae black).

Abdomen: almost entirely shining black, dark brown setulose; only tergite 1 brown, very sparsely whitish microtrichose. Tergites 3–5 wide, with lateral margins extending onto ventral side. Sternites 2–4 subquadrate; male sternite 5 ( Fig. 4 ) rounded, very large, almost twice as long and as wide as sternite 4. Female tergite 6 ( Fig. 10 ) half as long as tergite 5; sternites 3–6 with narrow antero-medial apodemes; sternites 5 and 6 trapezoid, sternite 6 3.5 times as wide as long, almost reaching margins of tergite 6.

Male terminalia: ( Figs 5–9 ). Surstylus ( Figs 5–7 ) as long as epandrium height, almost straight or very slightly curved anteroventrally, widely rounded apically, bearing 2 large serrate prensisetae, one long seta and 3–4 short setulae; hypandrium ( Fig. 8 ) convex, with dotted membrane, medially with 2 very large symmetrical gonites, each with 3 setulae; sensillar fields lateral of basiphallus not developed; phallapodeme dorsoventrally flattened. Basiphallus large, bulbous, epiphallic sclerites absent, but membrane posterodorsal of basiphallus with 2 slightly sclerotized areas distal part of phallus ( Fig. 9 ) densely and long trichose in basal two-thirds (yellow in basal and brown in media third) and very densely black trichose in apical one-third, apically without discrete glans-like structures.

Female terminalia: Oviscape short, as long as tergites 5 and 6 combined. Aculeus ( Fig. 11 ) 1.6 times as long as oviscape and 5 times as long as wide, with oval, unmodified cercal unit. Spermathecae ( Fig. 12 ): flattened subspherical, shorter than wide; one separate and 2 on ducts joined far from vagina.

Measurements: WL= 2.25–3.1 mm (3), 2.4 (Ƥ). BL=3.0– 3.5 mm. AL= 0.9 mm. Etymology. The new species is named for its type locality, Lazistan, in the Black Sea coastal region of Turkey, and is considered to be a Latinized noun in genitivus.

Discussion. The new species is similar to H. pseudoluctuosa Hennig in having yellow face and femora, short oval flagellomere 1 of antenna, low oval eyes, and the apical brown spot on wing aligned to costal vein in cells r2+3 and r4+5; both species also share small size (WL= 2.5–3 mm), simple, non-bifurcate surstylus with two prensisetae and long mesally seta on mesal surface. H. lazi sp. nov. can be differentiated from H. pseudoluctuosa based on the characters given in the key above, first of all from details of the wing pattern.

Figures

FIGURES 1 – 3. Holotype ♂ Herina lazi sp. nov. 1. Head and part of thorax, left. 2. Total view, left. 3. Wing.

FIGURES 4 – 9. Paratype ♂ Herina lazi sp. nov. 4. Abdominal sternites 2 – 5. 5. Epandrium, posterior. 6. Male genitalia, right. 7. surstylus, enlarged. 8. Hypandrium. 9. Phallus.

FIGURES 10 – 12. Paratype Ƥ Herina lazi sp. nov. 10. Abdomen, ventral. 11. Aculeus, ventral. 12. Spermathecae.