Scipopus (Phaeopterina) turgidus, Lindsay & Marshall, 2023

Lindsay, Kate & Marshall, Stephen A., 2023, A revision of Scipopus Enderlein including the subgenera Scipopus s. str., Phaeopterina Frey and Parascipopus subgen. nov. (Diptera, Micropezidae, Taeniapterinae), European Journal of Taxonomy 904, pp. 1-189 : 154-156

Scipopus (Phaeopterina) turgidus sp. nov.

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Fig. 69

Differential diagnosis

Scipopus (Phaeopterina) turgidus sp. nov. resembles S. (Ph.) noturgidus sp. nov. in having dark brown tarsi, uniformly brown infuscate wings and a wide epicephalon, but differs by the presence of the postocellar seta, the strongly convex posterior cervical sclerite, the swollen T2, and the anteriorly setulose postpronotal lobe.

Etymology

The species name, from the Latin adjective for ‘swollen’, refers to both the swollen posterior female cervical sclerite and the swollen anterior margin of T2.

Type material examined

Holotype

COLOMBIA • 1 ♀; Amazonas , PNN Amacayacu San Martin; 3°46′ S, 70°18′ W; 150 m a.s.l.; 2–16 Apr. 2001; D. Chota leg.; Malaise; M. 1612; debu01089020/MYCRO605-19 unsuccessfully sequenced for CO1; IAVH.

Paratypes

COLOMBIA • 1 ♀; same collection data as for holotype; debu01089397/MYCRO824-20 sequenced for CO1–5′; IAVH • 1 ♀; same collection data as for holotype; Malaise; M. 1613; debu01089396/ MYCRO821-20 sequenced for CO1–5′; IAVH (dissected and photographed, Fig. 69A–D ) .

Description

LENGTH. 12–13 mm.

HEAD. Palpus orange, light brown basally, pale microtrichose and black setulose, narrow (length 4.5× height). Clypeus orange, width ~2.5 × height, silvery microtrichose on entire surface. Frontal vitta dull, orange, microtrichose. Epicephalon mostly orange, sometimes brown medially, shiny, bare, wide (width ⅔ or more of upper frontal vitta width at inner verticals), clearly delineated from upper frontal vitta. Upper fronto-orbital seta absent or present; one lower fronto-orbital seta absent, all other head chaetotaxy well-developed.

THORAX. Scutum black-brown, brown microtrichose, with a wide, indistinct silvery-blue median sheen. Female cervical sclerite strongly convex on posterior half. Postpronotal lobe black-brown, densely setulose on anterior point. Notopleuron black-brown, indistinct pale microtrichosity surrounding anterior notopleural seta and ventral margin. Thorax black-brown with blue sheen, entirely silvery microtrichose. Legs dark brown; first fore and hind tarsomere dark brown with ventral golden fringe. Wing brown infuscate.

FEMALE ABDOMEN. T1 with fine, long, white setae. Pleuron pale grey, faded in available specimens, but apparently darker on dorsal margin of P2–5. T1+2 ~1.5× length of T3; anterior margin of T2 swollen, posterior margin of T2 ~1.9 × as wide as T1. Oviscape dark brown, black setulose, white microtrichose on anterior ⅔, ~2.5× length of T6. Paired and single spermathecal ducts arising separately from bursa copulatrix. Paired spermathecal duct short (5.0 × length of typical paired spermathecae), narrow basally, wide distally. Paired spermathecal stems and paired spermathecae apparently absent. Single spermathecal duct narrow, equal in length and diameter to paired duct at base, with apical swollen bulb. Single spermatheca large, elongate, with numerous jagged tubercles and an apical indentation.

MALE ABDOMEN. Not observed.

Remarks

All three females available for examination were dissected and apparently lacked paired spermathecae, which may have been lost during dissection. However, the distal end of the paired duct is present and blunt on all three specimens and there seems to be no evidence of snapped off stems, suggesting a loss of the paired (primary) spermathecae in this species.

Distribution

Colombia.

Figures

Fig. 69. Scipopus (Phaeopterina) turgidus sp. nov, ♀, Colombia, paratype (IAVH). A. Head and thorax, dorsal view. B. Head, anterolateral view. C. Female spermatheca and associated structures. D. Habitus. Abbreviations: bc = bursa copulatrix; pd = paired spermathecal duct; sd = single spermathecal duct; ss= single spermatheca.