Pseudodoros (Pseudodoros) nigricollis Becker, 1903

van Eck, Andre & Makris, Christodoulos, 2016, First records of Pseudodorosnigricollis Becker (Diptera: Syrphidae) from Cyprus, Biodiversity Data Journal 4, pp. 8139-8139 : 8139

Pseudodoros (Pseudodoros) nigricollis Becker, 1903

Pseudodoros (Pseudodoros) nigricollis The current consensus is that the genus Pseudodoros Becker, 1903 consists of two subgenera ( Dioprosopa Hull, 1947 ( Hull 1947) and Pseudodoros with three described species: P. (Dioprosopa) clavata (Fabricius, 1794), P. (Dioprosopa) vockerothi (Kassebeer, 2000) and P. (Pseudodoros) nigricollis Becker, 1903. A review of the genus Pseudodoros was undertaken by Kassebeer (2000) in which he described a new species from South America and concluded that the subgenus Dioprosopa should have generic status with the genus Pseudodoros restricted to the Eastern Mediterranean and Afrotropics and Dioprosopa to the New World. A fourth species, P. psyllidivora Séguy, 1953 was synomymised by Kassebeer (2000) with Allobaccha sapphirina (Wiedemann, 1830). Mengual et al. (2008), in their study on the tribe Syrphini , recognised Dioprosopa as a subgenus of Pseudodoros . The holotype of P. nigricollis is a male specimen from Cairo, Egypt, collected by Becker in November 1898. Becker published the description of the genus and species in 1903 ( Becker 1903, Becker 1902). Later, Efflatoun (1922) mentioned two males from Ghezireh (which nowadays is part of Cairo), one recorded from spring 1909 and the other without date. Efflatoun's redescription (mostly a direct translation) was based primarily on Becker's description, with additional characters from his two specimens. In his review, Kassebeer (2000) redescribed the male of P. nigricollis using the holotype, added further morphological characteristics of the female to those provided for both sexes by Sack (1932) and figured both male and female abdomens. He also agreed with Smith and Vockeroth (1980) that Baccha extranea Bezzi 1915 is a junior synonym of P. nigricollis . However, he made no reference to Efflatoun's paper or specimens. According to Efflatoun (1922), a male from 1909 was in his private collection (in Cairo) and the other one in the collection of what was called the Sultania Agricultural Society, also based in Cairo. Where these specimens are at present is unknown to the authors. Also it is unknown which females were used by Sack (1932).

Materials

Type status: Other material. Occurrence: recordedBy: C. Makris; individualCount: 2; sex: males; disposition: in collection A van Eck & C. Makris; Taxon: genus: Pseudodoros; specificEpithet: nigricollis; Location: locationID: Polis Chrysochou; higherGeographyID: Pafos; country: Cyprus; verbatimElevation: 0 m; verbatimLatitude: 35.04220; verbatimLongitude: 32.41530; verbatimCoordinateSystem: decimal degrees; verbatimSRS: WGS84; Identification: identifiedBy: André van Eck; Event: samplingProtocol: hand net; eventTime: 11.00-11.30 PM; verbatimEventDate: 30.XI.2014; habitat: Phragmitesaustralis reed bed; eventRemarks: sunny day, approx. 19-22 degrees Celcius Type status: Other material. Occurrence: recordedBy: C. Makris; individualCount: 5; disposition: not collected; Taxon: genus: Pseudodoros; specificEpithet: nigricollis; Location: locationID: Polis Chrysochou; higherGeographyID: Pafos; country: Cyprus; verbatimElevation: 0 m; verbatimLatitude: 35.04220; verbatimLongitude: 32.41530; verbatimCoordinateSystem: decimal degrees; verbatimSRS: WGS84; Identification: identifiedBy: André van Eck; Event: samplingProtocol: hand net; eventTime: 11.00-11.30 PM; verbatimEventDate: 30.XI.2014; habitat: Phragmitesaustralis reed bed; fieldNotes: on and between the reeds in a wind sheltered spot; eventRemarks: sunny day, approx. 19-22 degrees Celcius Type status: Other material. Occurrence: recordedBy: C. Makris; individualCount: 3; sex: males; disposition: in collection A van Eck; Taxon: genus: Pseudodoros; specificEpithet: nigricollis; Location: locationID: Polis Chrysochou; higherGeographyID: Pafos; country: Cyprus; verbatimElevation: 0 m; verbatimLatitude: 35.04220; verbatimLongitude: 32.41530; verbatimCoordinateSystem: decimal degrees; verbatimSRS: WGS84; Identification: identifiedBy: André van Eck; Event: samplingProtocol: hand net; eventTime: 09.00-10.30 PM; verbatimEventDate: 14.XI.2015; habitat: Phragmitesaustralis reed bed; eventRemarks: sunny day, approx. 21-25 degrees Celcius Type status: Other material. Occurrence: recordedBy: C. Makris; individualCount: 2; sex: 1 male, 1 female; disposition: in collection ZFMK (Bonn, Germany); Taxon: genus: Pseudodoros; specificEpithet: nigricollis; Location: locationID: Polis Chrysochou; higherGeographyID: Pafos; country: Cyprus; verbatimElevation: 0 m; verbatimLatitude: 35.04220; verbatimLongitude: 32.41530; verbatimCoordinateSystem: decimal degrees; verbatimSRS: WGS84; Identification: identifiedBy: André van Eck; Event: samplingProtocol: hand net; eventTime: 09.00-10.30 PM; verbatimEventDate: 14.XI.2015; habitat: Phragmitesaustralis reed bed; eventRemarks: sunny day, approx. 21-25 degrees Celcius Type status: Other material. Occurrence: recordedBy: C. Makris; individualCount: 10; disposition: not collected; Taxon: genus: Pseudodoros; specificEpithet: nigricollis; Location: locationID: Polis Chrysochou; higherGeographyID: Pafos; country: Cyprus; verbatimElevation: 0 m; verbatimLatitude: 35.04220; verbatimLongitude: 32.41530; verbatimCoordinateSystem: decimal degrees; verbatimSRS: WGS84; Identification: identifiedBy: Christodoulos Makris; Event: samplingProtocol: hand net; eventTime: 09.00-10.30 PM; verbatimEventDate: 14.XI.2015; habitat: Phragmitesaustralis reed bed; fieldNotes: on and between the reeds in a wind sheltered spot; eventRemarks: sunny day, approx. 21-25 degrees Celcius

Description

Citation: Pseudodoros (Pseudodoros) nigricollis Becker, 1903. Becker T (1903) Agyptische Dipteren. Mitteilungen aus dem Zoologischen Museum in Berlin 2, 67-195.

Differential diagnosis: (source: Mengual, X. (2016) Syrphidae Community Website. Accessed at: syrphidae.myspecies.info/taxonomy/term/973/descriptions on 2016-02-19)

Pseudodoros is a genus of Syrphini . P. nigricollis has eye bare; metasternum bare; thorax without yellow maculae except on scutellum; postmetacoxal bridge incomplete; vein M1 slightly sinuate; vein R4+5 straight or nearly so. The subgenus Pseudodoros has abdominal tergum 2 with a median pair of small yellowish maculae; scutellum dark brown; scutum with long, erect pile; pro- and mesotibiae yellow with medial narrow brownish ring; medial black facial vitta narrower than the basoflagellomere's width; mouth edge yellow.

Description: (source: Mengual, X. (2016) Syrphidae Community Website. Accessed at: syrphidae.myspecies.info/taxonomy/term/973/descriptions on 2016-02-19)

Male

Head: Face with median, small facial tubercle, not produced forward (oral margin less prominent than antennal bases), yellow, oral margin yellow, with medial narrow black vitta, yellow pilose; gena yellow anteriorly, brownish posteriorly, pale pilose; lunule dark, dark area connected with facial vitta between antennal bases not surrounding them; frontal triangle yellow, pale pilose; holoptic, eye bare; vertical triangle black, black pilose; antenna dark brown, basoflagellomere slightly elongate, orangish ventrally; occiput black, silver pollinose, whitish pilose.

Thorax: Scutum shiny black, with erected, long yellow pile, white pollinose anteriorly; postpronotum bare; scutellum black, yellow pilose, subscutellar fringe complete with yellow pile. Pleuron black, whitish pilose; metasternum bare; calypter yellow; plumula yellow; halter yellow; spiracular fringes yellow. Wing: Wing membrane hyaline, stigma yellow to dark yellow; extensively microtrichose, bare basally before vein h, costal cell bare on basal 1/6, cell CuP bare very basally, and cell BM bare on basal half. Alula broad, as broad as cell BM, with few microtrichia apically. Legs: Coxae and trochanter black. profemur black on basal 2/5, yellow apically; mesofemur black, yellow on apical 1/4; pro- and meso tibiae yellow with medial dark ring; pro- and mesotarsi brown except basitarsomeres yellow; metafemur black, yellow on apical 1/8; metatibia black, yellow on basal half; metatarsi brown.

Abdomen: Petiolate, unmargined. Dorsum mainly black except tergum 2 black with two medial small rounded yellow maculae in the lateral margins; tergum 3 black with two lateromedial small yellow maculae; tergum 4 black with two lateral larger yellow maculae close to anterior margin.

Female

Similar to male, with frons shiny black, yellow laterally; yellow maculae of tergum 4 a bit larger.

Size: Length: body, 11.0-11.4 mm; wing, 7.1-7.5 mm (male); body, 9.3-10.0 mm; wing, 6.6-7.2 mm (female).