Notiphila (Notiphila) oksanae Krivosheina et Ozerov

Krivosheina, M. G. & Ozerov, A. L., 2015, A new species of the shore-fly genus Notiphila Fallén, 1810 (Diptera: Ephydridae) from Indonesia, Zootaxa 3974 (4), pp. 595-598 : 596

Notiphila (Notiphila) oksanae Krivosheina et Ozerov , sp.n.

Figs 1–3 .

Material. Holotype ♂, Indonesia, W Papua, Merauke env. (8.52S 140.65E), 9–15.XII.2014 (N. Vikhrev, O. Eremenko). Paratypes: 1 ♂, 1 ♀, the same label data.

Diagnosis. In having many longitudinal, thoracic stripes and dilated surstyli in lateral view, this new species resembles the Oriental species Notiphila (N.) thaica Krivosheina, 2010 , but differs in having 2 subequal facial setae, the absence of a brown band on anepisternum and the presence of a dark band on hind tibia. By the structure of genitalia (basally fused presurstyli, long aedeagus and large phallapodeme) the new species is closer to Notiphila (N.) insularis Grimshaw, 1901 , occurring both in Oriental and Austalasian/Oceanian Regions, differing from it in having striate body coloration (body grey with dark spots at bases of setae in N. (N.) insularis ).

Description. Body medium-sized, length 3.5–3.8 mm in males, 4.0 mm in females, wing 3.5 mm. General coloration grey with blackish brown stripes and spots.

Head. Frons dark grey, fronto-orbital plate and ocellar triangle pale, with dark points at bases of setae and in female with additional narrow longitudinal dark grey spot in front of anterior ocellus. Face golden, carina dark brown, parafacial golden. Palpus yellow. Antenna yellow, 1st flagellomere darkened dorsally. Arista with 11 long rays. One strong posterior fronto-orbital seta pointing posteriorly; 1 fine, very short anterior fronto-orbital seta pointed anteriorly. Postfrontal index (height to width ratio of frons) 0.8, prefrontal index (ratio of height of face to its width below antennae) 1.5, head index (eye to gena height ratio) 7:1. Face with 2 strong subequal setae and 1 or 2 fine short hairs below setae.

Thorax. Scutum grey, with dark spots at bases of all setae, with blackish brown medial stripe bifurcating near scutellum; similar stripes running along line intra-alar setae behind suture, besides large elongate spots present around supra-alar setae and anterior notopleural seta; anepisternum grey with median dark spot, katepisternum grey. Scutellum grey, ventral surface shining black with grey stripe between apical setae. Scutellum oblong, 1.2 times as long as wide, covered with sparse short hairs, with 4 long setae. Halteres yellow. All coxae dark, densely grey microtomentose; femora dark with yellow apices; fore tibia yellow basally and darkened in apical half; mid tibia yellow; hind tibia yellow with narrow dark band at apical half. Fore tarsus black, mid and hind tarsi yellow. Fore femur posteroventrally with 3–5 long setae. Mid femur with 2–3 strong long spiniform setae on inner surface, this row also including 2–3 short setae; anteroventral and posteroventral surfaces with rows of short spiniform setae in apical half. Mid tibia with 3 strong dorsal setae. Wing blackish.

Abdomen. Grey; tergite 1 with 2 medial dark spots; tergites 2–4 with four spots, and tergite 5 with 2 similar spots. In females spots on segments 2–3 fused. Spots arranged to form narrow, pale grey longitudinal stripe in medial part of abdomen. Posterior margins of tergites with posterior marginal setae. Male terminalia: epandrium in dorsal view oval, presurstyli fused basally and pointed apically with group of relatively strong setae, cercus relatively large and covered with setae ( Fig. 1 ); epandrium and presurstylus in lateral view not angulate, presurstylus broad and rounded apically with irregular rows of setae ( Fig. 2 ); subepandrial plate in lateral view rod-like with broadened end ( Fig. 3 ); aedeagus large and tubular, of same width basally and apically, with dorsobasal short slightly curved process; phallapodeme large, longer than aedeagus, significantly expanded, extension to base of aedeagus elongate ( Fig. 3 ); gonite angulate, T-shaped, with 2 apical setae; hypandrium in dorsal view broadly U-shaped, lateral arms curved laterally.

Biology. The specimens were collected from leaves and stems of plants growing in a small pond.

Etymology. Notiphila oksanae sp. n. is named after Oksana Eremenko (Kharkov, Ukraine), the collector of the material from W Papua and a volunteer at Zoological Museum of Moscow University.

Figures

FIGURES 1 – 3. Notiphila (Notiphila) oksanae sp. n. 1 — epandrium, cerci and presurstyli, dorsal view; 2 — same, lateral view; 3 — internal structures of the male terminalia, lateral view.