Perilampsis dryades Munro, 1980

Meyer, Marc De, 2009, Taxonomic revision of the fruit fly genus Perilampsis Bezzi (Diptera, Tephritidae), Journal of Natural History 43 (39 - 40), pp. 2425-2463 : 2450-2452

publication ID	https://doi.org/ 10.1080/00222930903207868
persistent identifier	https://treatment.plazi.org/id/C1499727-E213-AC6B-E1B4-FA5DFD3265FB
treatment provided by	Felipe
scientific name	Perilampsis dryades Munro
status

Treatment

Perilampsis dryades Munro View in CoL

( Figure 2D View Figure 2 , 3G View Figure 3 , 4I View Figure 4 )

Perilampsis dryades Munro, 1939a, p. 38 View in CoL .

Perilampsis dryades: Cogan and Munro, 1980, p. 530 View in CoL (Afrotropical catalogue); Norrbom et al., 1999, p. 186 (world catalogue).

Diagnosis

Arista almost bare; scutum with two transverse bands; postpronotum white; scutellum white; anatergite and katatergite completely white; legs yellow with femora dark; wing, anterior apical band complete, touching discal band, posterior apical band present, discal band reaching posterior margin; abdomen mainly shining black-brown.

Description

Head. Antennal segments orange. Arista almost bare, at most few dispersed rays shorter than width of base of arista. Frons ventral 2/5 yellow-white, dorsal part orange-brown to brown. Two frontals, placed parallel to medial eye margin; two orbitals, placed slightly convergent with anterior orbital located more medially. Face white; with brown band or brown patches near antennal implant. Occiput yellow, with two darker, largely confluent, patches in dorsal part.

Thorax. Scutum shining brown; dark dispersed pilosity, median part with silver-grey microtrichosity; two transverse bands with silvery pilosity and microtrichosity, one anteriorly of transverse suture, second band near dorsocentrals. Postpronotum white. Anepisternum brown, with white band occupying posterodorsal part, its ventral margin reaching posteroventral corner or almost so; with pale pilosity; one anepisternal seta. Anatergite and katatergite white. Scutellum white. Subscutellum brown. Legs pale yellow, femora yellow-brown.

Wing ( Figure 2D View Figure 2 ). Wing bands brown, well developed. Basal part of wing brown, subbasal irregular spots and streaks present. Anterior apical band completely filling cells r 1 and r 2+3. Posterior apical band touching anterior apical band. Subapical band isolated. Discal band reaching posterior wing margin; touching anterior apical band near pterostigma; well separated from subbasal spots and streaks, at least in cell cu 1. R-M ratio 0.77–0.88.

Abdomen. Shining dark brown, posterior fourth to two-thirds of tergites 2 and 4 with greyish band.

Female. As male. Female terminalia, oviscape about as long as abdominal tergites, shining orange-brown, with black pilosity. Aculeus ( Figure 3G View Figure 3 ) flattened, about 10 times longer than wide; apical part pointed with straight sides, sublaterally somewhat broadened; aculeus tip ( Figure 4I View Figure 4 ) pointed with subapical shoulders.

Body length. 3.75–4.45 mm; wing length 3.80–4.30 mm.

Material examined

Holotype. 3, SOUTH AFRICA: Durban , Benmore, May 1936, H.K.Munro, M602 [= ex fruits Loranthus kraussianus according to Munro’s notebooks] ( SANC).

Paratypes. SOUTH AFRICA, Durban , 1♀, 11– 29.9.1933, W.E. Marriott, bait trap ( NMSA) ; 1♀, 1–11.IX.1933; 233, 15–23.VI.1933, both W.E. Marriott, bait trap ( BMNH) ; 13, Umhlanga , Natal, October 1937, W.E. Marriott, M636 [= ex fruits Loranthus quinquenervis according to Munro’s notebooks] ( NMSA) .

Distribution

South Africa.

Hosts

Reported from Agelanthus kraussianus (Meisn.) Polhill and Wiens and Oncocalyx quinquenervius (Hochst.) Wiens and Polhill (cf. material examined and Munro (1939a)). The specimen from A. kraussianus was from the same sample as a long series of Perilampsis tetradactyla ( Munro 1939a) .

Comments

This species is very similar to pulchella and is best differentiated by the almost bare arista (while distinctly pubescent in P. pulchella ). In addition, the transverse band on the face near antenna is narrower than in pulchella . In the females, the aculeus tip has subapical shoulders in P. dryades , while it is simply pointed in P. pulchella . Both P. dryades and P. pulchella differ from the other Perilampsis species by the discal band being well separated from the subbasal spots.