Paracestrotus pulchripennis Silva, sp. nov.
Creators: name: Silva, Vera Cristina
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Lauxaniidae
Paracestrotus
Paracestrotus pulchripennis

description: Paracestrotus pulchripennis Silva, sp. nov.
(Figs. 2–3)
Diagnosis
This species is distinguished by a darker body with grayish pruinosity; a shiny dark brown hump on the frons; and pale legs with dark rings on femora.
Description
Male: Length: body 6.2 mm; wing 5.0 mm. Head (figs. 2A, B): vertex sharp; ocellar triangle dark brown, close to vertex. Frons almost square; posterior ½ yellow, frontal plate bright brown, strongly sclerotized, more elevated than fronto­orbital plate; black­velvet antenno­orbital spot large, extending from anterior to lateral margins; with one white pruinose spot at top of parafacial; anterior margin straight, almost in same plane as face. Face dull; in profile straight; light yellow, with wide brown transverse stripe medially. Eye oval; posteroventral outline concave. Parafacial narrow; gena short, whitish yellow with white pruinosity. Mouthparts whitish yellow, distal parts darker; palpus slender, dark brown. Antenna: scape shorter than pedicel, both yellow; pedicel with long apical ventral bristles; first flagellomere long (length 2,5 times basal width), yellow, apex and ventral part brown; first flagellomere with dorso­apical pubescence; arista black, long plumose, rays longer dorsally. Chaetotaxy: outer vertical seta 2/3 length of inner vertical setae; ocellar seta minute; postocellar setae long, cruciate; orbital setae reclinate, anterior seta 2/ 3 length of posterior seta; 2 genal setae.
Thorax: with grayish pruinosity; mesonotum slightly arched, dark brown; scutellum flat, apical margin rounded and yellow; pleura brown, with whitish yellow central longitudinal stripes through proepimeron, proepisternum, and lower part of anepisternum, katatergite and anatergite. Chaetotaxy: dorsocentral setae arranged 0+2, posteriorly located, anterior seta smaller than posterior seta; 1 prescutellar acrostichal seta; 8 rows of acrostichal setulae; intra­alar seta absent; 1 presutural and 1 postsutural supra­alar setae; 2 postalar setae; 1 postpronotal seta; 2 notopleural setae; 1 minute proepisternal seta; 1 anepisternal seta; anepimeron bare; 1 katepisternal seta; 2 scutellar setae, apical pair parallel. Legs: whitish yellow with brown stripes on most segments: basal ½ of fore femur, basal 1/3 of mid and hind femora, last three tarsomeres of mid and hind tarsi; mid and hind tibiae brown, with basal and subapical lighter stripes. Chaetotaxy: fore coxa with 1 subapical dorsal seta, 1 apical dorsal seta; fore femur with posterodorsal and posteroventral rows of setae; mid coxa with apical row of setae; mid tibia with 1 preapical anterodorsal seta, 1 strong apical ventral seta; hind coxa with 1 apical dorsal seta; hind femur with 1 subapical dorsal seta; hind tibia with 1 preapical dorsal seta. Wing (fig. 2C) patterned, brown with light yellow rounded spots; veins brown; costa sapromyziform; R bare; crossvein r­m in apical 1/3 of discal cell; crossvein dm­cu in basal 1/3 of r4+5; longitudinal veins slightly sinuous in middle of wing; R4+5 approaching M close to apex; anal vein shorter than cell cup. Halter whitish yellow.
Abdomen: dark brown with grayish pruinosity. Terminalia (fig. 3): epandrium subrectangular in lateral view. Surstyli rounded, small, free from epandrium. Hypandrium semirounded, narrow, with pointed median projection. Paramere present as a bipartite lobe. Aedeagus short cylindrical; with long inner stylets in apical portion; aedeagal apodeme small, rod­like; small ejaculatory apodeme present. Sternite 10 present, well developed, joining bases of surstyli. Cercus wide, papillate.
Female: unknown.
Etymology
pulcher (Latin), meaning beautiful + penna (Latin), meaning feather, to denote the patterned wing of this species. To be treated as a noun in apposition.
Type material
Holotype: male; Brazil, Pará, Belém, Mocambo, 1.vii.1965, H.S.Lopes & P.W. Miranda coll. (MZSP). Paratypes: 1 male, same data as holotype (MZSP); 1 male, Brazil, Amazonas, Tapuruquara, Rio Negro, 26–27.xi.1962, J. Bechyné coll. (MZSP).
description: Published as part of Silva, Vera Cristina, 2006, Systematic review of Neotropical genera of Lauxaniidae: 3. The genus Paracestrotus Hendel, 1925 (Diptera: Schizophora), pp. 61-68 in Zootaxa 1249 on pages 64-66, DOI: 10.5281/zenodo.172981