Synamphichaeta hirtivena Gilasian & Ziegler, 2020

Gilasian, Ebrahim, Ziegler, Joachim & Parchami-Araghi, Mehrdad, 2020, Review of the genus Synamphichaeta Villeneuve (Diptera: Tachinidae), with the description of a new species from Iran, Zootaxa 4718 (2), pp. 251-260 : 253-256

Synamphichaeta hirtivena Gilasian & Ziegler , sp. nov.

( Figs 2–9 )

Type material. HOLOTYPE ♂ (glued to a card point): IRAN: Sistan & Balouchestan / prov. Rask , 405 m / 26°14′02.1″N 61°23′40.5″E / 12.vi–14.vii.2016, Malaise trap / M. Ghafouri-Moghaddam leg. // HOLOTYPUS ♂ / Synamphichaeta hirtivena / Gilasian & Ziegler / 2019 [red label]” ( HMIM) .

PARATYPES (in ethanol unless specified): 47 ♂♂ (5 glued to card points), 4 ♀♀ (glued to card points), same data as holotype ( HMIM) ; 3 ♂♂ (glued to card points), same data as previous except ( SMNS) ; 1 ♂ (glued to a card point), Bahukalat, Agricultural Research Station , 25°42′04.8″N 61°25′25.5″E, 12.ix–21.xii.2016, 23 m, Malaise trap, H. Mousavi leg. ( HMIM) ; Kerman province: 5 ♂♂ (4 glued to card points) , 6 ♀♀ (5 glued to card points), Zeh- kaloot, Jazmourian Wetland, Chah-Alam village , palm grove, 27°44′43.2″N 58°34′37.0″E, 30.iv–10.ix. 2017, 384 m, Malaise trap, M. Parchami-Araghi leg. ( HMIM) ; 1 ♀ (glued to card point), same data as previous except ( SMNS) ; Khorasan-e Razavi province: 3 ♂♂, Mashhad, Chenaran, Sheykh-ha , 36°36′22.7″N 59°11′38.0″E, 27.v.2016, 1170 m, Malaise trap, B. Motamedinia leg. ( HMIM) ; Khuzestan province: 1 ♀ (pinned), Dez National Park, Mianrood, Sanctuary for Persian Fallow Deer , 32°06′22.5″N 48°26′17.2″E, 13.v–14.vi.2014, 54 m, near marsh, Malaise trap, M. Parchami-Araghi leg. ( HMIM) ; Sistan & Balouchestan province : 3 ♂♂ (glued to card points), same data as ho- lotype, collection numbers 37.384–86 ( ZMHB) ; 2 ♂♂, 1 ♀ (glued to card points), same data as holotype, collection numbers 37.387–89 ( CZB) .

Diagnosis. Frontal vitta about 0.5 times as wide as one fronto-orbital plate; fronto-orbital plate with 2 strong proclinate fronto-orbital setae and 2 strong reclinate upper fronto-orbital setae and with very short scattered setulae; face in male 1.4–1.6 times as long as frons in lateral view; height of gena about 0.2 times as long as maximum diameter of eye; vibrissa nearly 0.6 times as long as face; scutum with 3+4 dorsocentral setae; third costal section of wing 2.0–2.2 times as long as second costal section; vein R 1 entirely setose dorsally and with 5–6 apical setulae ventrally; vein CuA 1 with 1–4 basal setulae dorsally; bend of vein M forming a right angle; median discal setae absent on abdominal tergites; median marginal setae on syntergite 1+2 very weak and short or absent; median marginal setae on tergite 3 about 0.8–0.9 times as long as this tergite.

Description. Male ( Fig. 2 ). Body length: 5.5 [4.5–6.0] mm.

Colouration and microtrichosity. Head predominantly brown; frontal vitta brown; lunule orange; fronto-orbital plate blackish; face, parafacial, fronto-orbital plate, ocellar triangle, gena, postocular margin and occiput covered with whitish-grey microtrichosity; occipital setulae white; scape, pedicel and about basal 1/3 [1/4] of postpedicel bright orange on outer side, inner side of postpedicel almost entirely orange except brownish-black apical margin, other parts of antenna including arista brown; prementum brown, palpus yellowish; thorax brownish-black, predominantly covered with grey microtrichosity, presutural portion of scutum with 2 black narrow median vittae and 2 black semitriangular lateral vittae (posterior view); postalar callus brown; scutellum black, apical 1/3–[1/4] orange, covered with grey microtrichosity; wing hyaline; calypters whitish; tegula and basicosta brownish-black; halter orange; legs brownish-black; abdomen brownish-black, abdominal tergites 3–5 each with an anterior band of whitish-grey microtrichosity; postabdomen mostly brown, cercus and sternite 5 brownish.

Head ( Fig. 4 ). Eye bare; gena with only a few short setulae on lower margin; height of gena about 0.2 times as long as maximum diameter of eye in lateral view; face [1.4]–1.6 times as long as frons in lateral view; frons at its narrowest point about 1.2 times as wide as an eye in dorsal view; frontal vitta almost 0.5 times as wide as frontoorbital plate medially; medial vertical seta almost 0.6–[0.7] times as long as maximum diameter of eye; lateral vertical seta present, 0.55 [0.50–0.65] times as long as medial vertical seta; ocellar setae lateroproclinate; postocellar setae parallel; frons with 6 [5–7] frontal setae descending to level of upper margin of postpedicel; facial ridge nearly convex, with setae on its lower 2/3; parafacial bare; fronto-orbital plate with a few setulae outside row of frontal setae; with 2 upper reclinate fronto-orbital setae and 2 proclinate fronto-orbital setae; fronto-orbital plate in lateral view at level of scape about 0.4 times as wide as minimum diameter of eye; parafacial at its narrowest point 0.16–[0.18] times as wide as minimum eye diameter and [0.40]–0.45 times as wide as postpedicel in lateral view; vibrissa arising at level of lower facial margin and almost 0.6 times as long as face; lower facial margin not visible in lateral view; postpedicel 6.7 [6.5–7.0] times as long as pedicel and about 4.7 times as long as wide at middle; arista thickened in nearly basal 3/4; first aristomere shorter than wide, second aristomere nearly twice as long as first aristomere; prementum short, about twice as long as wide; palpus well-developed.

Thorax. Prosternum setose; proepisternum bare; postpronotum with 3 strong basal setae arranged in a straight line and 1 short anterior seta; scutum with 3+3 acrostichal, 3+4 dorsocentral, 2+3 intra-alar, 2 notopleural, and 3 supra-alar setae, first postsutural supra-alar seta longer than notopleural setae; postalar callus with 3–[4] (1 strong + 2–[3] short) setae; anatergite bare below calypter; katepimeron bare; katepisternum with 3 setae; postmetacoxal area membranous; scutellum with 4 pairs of marginal setae, 1 pair of preapical discal setae and [2]–3 erect discal setulae; apical setae short, crossed and semi-erect; subapical setae strong and nearly parallel; lateral setae 0.9 times as long as subapical setae; basal setae nearly as long as lateral setae. Wing. Second costal section bare ventrally; costal seta well differentiated; third costal section 2.15 [2.00–2.25] times as long as fourth costal section and nearly [2.0]–2.2 times as long as second costal section; vein R 1 entirely setose dorsally and with [5]–6 apical setulae ventrally; vein R 4+5 setose to beyond crossvein r–m dorsally and with 1–2 basal setulae ventrally; cell r 4+5 closed at wing margin [or with a short petiole at most as long as crossvein r–m]; section of vein M between crossveins r-m and dm-cu 1.2 [1.1–1.2] times as long as section between crossvein dm-cu and bend of vein M; bend of vein M forming a right angle and without an appendix; crossvein dm-cu almost 5.5–[6.0] times as long as crossvein r-m; vein CuA 1 with 2 [1–4] basal setulae dorsally. Legs. Fore coxa bare on anterior and posterior surfaces; fore tibia with 2 posterior setae; preapical anterodorsal seta slightly longer than preapical dorsal seta; fore tarsomere 1 about twice as long as fore tarsomere 2 and 0.5 times as long as fore tibia; fore claws short, nearly 0.4 times as long as fore tarsomere 5; mid tibia with a complete row of anterodorsal setae including 1 strong seta at mid length, 2 posterior and 1 ventral setae; hind tibia with nearly complete rows of anterodorsal and posterodorsal setae, 2 [2–3] anteroventral and 3 preapical dorsal setae.

Abdomen. Middorsal depression of syntergite 1+2 extending to posterior margin of segment; syntergite 1+2 with a pair of short and weak median marginal setae [median marginal setae of syntergite 1+2 sometimes absent] and [1]–2 lateral marginal setae; tergite 3 with 1 pair of median marginal and 1 pair of lateral marginal setae, without median discal setae; tergite 3 about half as long as wide; tergites 4–5 each with a nearly complete row of marginal setae; tergite 5 0.60–[0.75] times as long as tergite 4; sternites concealed by lateral margins of tergites. Terminalia ( Figs 5–9 ). Sternite 5 with a U-shaped median apical depression, without sensilla trichodea; surstylus nearly as long as cercus and with 4–5 short spines apically; aedeagus as in Figs 8–9 . Epiphallus invisible.

Female ( Fig. 3 ). Differs from male as follows: postpedicel narrower and lighter, 4–5 times as long as pedicel; face almost 1.25–1.30 times as long as frons in lateral view; abdomen brownish-orange.

Etymology. The name “hirtivena” (Latin, feminine) is derived from “hirta” and “vena” meaning hairy and vein, respectively, with reference to the setose wing veins R 1 and CuA 1.

Distribution. Iran.

Figures

FIGURE 4. Synamphichaeta hirtivena sp. nov., holotype ♂ (HMIM); head in lateral view. Scale bar: 0.5 mm.

FIGURES 2–3. Synamphichaeta hirtivena sp. nov., paratypes (SMNS). 2. Male. 3. Female. Photos by D. Whitmore.

FIGURES 5–9. Synamphichaeta hirtivena sp. nov., paratype ♂, Sistan & Balouchetan, Rask, Iran (HMIM); terminalia. 5. Epandrium, cerci and surstyli, dorsal view. 6. Epandrium, cerci and surstyli, lateral view. 7. Sternite 5. 8. Aedeagus, ventral view. 9. Aedeagus, lateral view. Scale bars: 0.1 mm.