Nigripeza octa, Marshall, 2022

Marshall, Stephen A., 2022, Amapeza and Nigripeza, new genera of Neotropical micropezid flies (Diptera, Micropezidae, Taeniapterinae), Zootaxa 5092 (3), pp. 251-272 : 269-270

publication ID

https://doi.org/ 10.11646/zootaxa.5092.3.1

publication LSID

lsid:zoobank.org:pub:91B1F45E-F3DF-4FF4-873A-DD3442ABD12A

DOI

https://doi.org/10.5281/zenodo.5881174

persistent identifier

https://treatment.plazi.org/id/8A1D87FB-FFAB-FFF5-FF4B-FF6246F7FB9B

treatment provided by

Plazi

scientific name

Nigripeza octa
status

sp. nov.

Nigripeza octa View in CoL new species

Figures 9A–9F View FIGURES 9

Description: Colour: Body mostly black, frontal vitta and orbital strips orange at anterior margin, slightly darker behind; mid femur with a subbasal band about twice as long as wide; hind femur yellow with a short distinct dark subbasal band separated by its own length from base of femur, a longer distomedian band and a very short and weak preapical band. Tergites black with dense fine silvery microsetulosity. Abdominal pleuron with a large dark pleural sack on P2, otherwise mostly white.

Head: Frontal vitta almost parallel sided behind ocelli, expanded and strongly elevated in front of ocelli, hardly tapered anteriorly and thus broad at anterior margin. Orbital plate finely striate, dull; epicephalon smooth, shiny. Clypeus sparsely microsetulose on anterior margin and posterolateral corners.

Thorax: Usually two (pairs of) dorsocentral bristles (left postsutural dorsocentral bristle missing on holotype male). Mesopleuron with a relatively narrow vertical band of dense silvery microsetulosity extending from anteroventral margin of katepisternum to margin of notum; pleuron otherwise sparsely microsetulose except for the shiny bare anterior third of anepisternum. Notum uniformly, sparsely and indistinctly microsetulose, with a barely distinguishable underlying pattern of dark vittae flanked by silvery margins.

Abdomen: Upper halves of P1 and P3 white, circular patch on P2 very dark, remainder of pleuron slightly darkened.

Female abdomen: Oviscape lost on female paratype

Male abdomen. Genital fork shallowly cleft at base, each arm elongate, subequal in length to base; slightly incurved at apex, with 1–2 short stout mesal bristles on basal half and about 6 on distal half, mostly clustered at apex. Distiphallus short and very broad, ending in a relatively broad phallic bulb about half as long as basal distiphallus. Ejaculatory apodeme larger than epandrium.

Type material: Holotype (♂, MNCR) COSTA RICA. San José, San Carlos, Riosparaiso Reserve, Pecari Station , 16km NNE Quepos, 9°33’53”N 84°7’32”W, 400m, 15.ii.2003, S.A. Marshall GoogleMaps . Paratypes: COSTA RICA. Puntarenas, Estacion Sirena, 5m, 13–28.Mar.1995, M. Chinchilla (1♀, MNCR); Estacion Rio Bonito , 2.5 km Cero la Gamba, 110m, 9–26.Mar.1996, E. Fletes (1♂, MNCR) .

Etymology: The name Nigripeza octa was applied to this species because it has long carried the manuscript name "species 8".

Comments: Nigripeza octa is the only Central American species in this otherwise South American genus. The holotype shows unusual apparent asymmetry in the number of dorsocentral bristles, a character that is usually stable and symmetrical. A specimen of this species (labelled TAE089) was treated under the manuscript name Grallipeza " octa " in Jackson et al 2015. It was the only species of Nigripeza or Amapeza included in that paper, in which the Majority Rule Consensus cladogram recovered it as sister to a clade including Hoplocheiloma Cresson and the one species of Grallipeza ss included in the paper.

MNCR

Museo Nacional de Costa Rica

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Micropezidae

Genus

Nigripeza

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