Scipopus (Phaeopterina) sexguttatus Enderlein, 1922

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 : 151-153

Scipopus (Phaeopterina) sexguttatus Enderlein, 1922

Fig. 67

Scipopus sexguttatus Enderlein, 1922: 209 .

Phaeopterina sexguttatus – Hennig 1934: 321 (key); 1935: 27 (diagnosis). — Marshall et al. 2016 (catalog).

Phaeopterinus sexguttatus – Aczél 1949: 344 (catalog). — Steyskal 1968: 48.15 (catalog).

Scipopus sexguttatus – Schumann 1988: 108 (catalog).

Differential diagnosis

Scipopus (Phaeopterina) sexguttatus resembles S. (Ph.) musculosus sp. nov. and S. (Ph.) brunneus sp. nov. in having three subapical hyaline spots on the wing and an at least partially white first fore tarsomere but differs by the white setae on T1 and the partially white first hind tarsomere.

Type material examined

Syntypes (examined and photographed in Berlin, 2002)

VENEZUELA • 2 ♀♀; Sammlung H. Loew; ZMHB .

Other material examined

VENEZUELA • 1 ♀; Aragua, Henri Pittier Nat. Park, Pico Periquito ; 1680 m a.s.l.; 15–30 Nov. 1997; T. Pape leg.; debu01089022/MYCRO603-19 sequenced for COI–5’; ZMUC (dissected and photographed, Fig. 67A–D ) • 1 ♀; Ar. Portachuelo Pass; 17 Aug. 1967; R.W. Poole leg.; USNM .

Description

LENGTH. 12 mm.

HEAD. Palpus orange, pale microtrichose and black setulose, narrow (length 4.2× height). Clypeus orange, very short, width ~2.7× height, silvery microtrichose on entire surface. Frontal vitta dull, orange, microtrichose, tapered posteriorly. Epicephalon light brown and/or orange, shiny, white microtrichose, wide (width ⅔ or more of upper frontal vittal width at inner verticals), clearly delineated from upper frontal vitta. Paracephalon light brown. Postocellar seta absent; all other head chaetotaxy well-developed.

THORAX. Scutum black-brown with wide, silvery-blue median sheen. Female cervical sclerite slightly swollen posteriorly. Postpronotal lobe black-brown, setulose anteriorly. Notopleuron black-brown with anteroventral silvery spot of microtrichosity ( Fig. 67A ). Thorax black-brown, entirely silvery microtrichose except small bare spot on anterior margin of anepisternum. Legs dark brown, paler brown on basal mid and hind femur; first fore tarsomere almost entirely white; first hind tarsomere white anterodorsally. Wing black-brown infuscate on r 1, distal ½ and apex, three hyaline window-like spots in m 1, r 2+3, r 3+4.

FEMALE ABDOMEN. T1 with fine, long, white setae. Pleuron of female pale grey, dorsal half of P2–5 dark brown. T1+2 ~2.0 × length of T3, posterior margin of T2 ~1.9 × as wide as T1. Oviscape black-brown, black setulose, white microtrichose on anterior ½, ~3.3 × length of T6. Common duct short, smooth, not delineated from paired duct. Paired spermathecal duct long (~3.0× length of paired spermathecae, but paired spermathecae uncharacteristically large in this species), narrow basally, swollen distally. Paired spermathecal stems narrow, shorter than spermathecae, inornate. Paired spermathecae elongate, slightly wider distally, with sparse tubercles and apical indentations. “Single” spermathecal duct (terminating in two spermathecae) arising from base of paired duct. “Single” spermathecal duct and spermathecae similar to paired.

MALE ABDOMEN. Not observed.

Remarks

See S. (Ph.) musculosus sp. nov. for discussion.

Distribution

Venezuela, Colombia ( Steyskal 1968).

Figures

Fig. 67. Scipopus (Phaeopterina) sexguttatus Enderlein, 1922. A. Head, ♀, anterolateral view, Venezuela, non-type (ZMUC). B. Head and thorax, ♀, dorsal view, Venezuela, non-type (ZMUC). C. Female spermathecae and associated structures, Venezuela, non-type (ZMUC). D. Habitus, ♀, (oviscape removed), Venezuela, non-type (ZMUC). E. ♀, dorsal view, Venezuela, syntype (ZMHB). Abbreviations: bc = bursa copulatrix; pd = paired spermathecal duct; ps = paired spermatheca; sd = “single” spermathecal duct; ss = “single” spermathecae.