Curtonotum notatum Lindsay

Lindsay, Kate G., Klymko, John & Marshall, Stephen A., 2019, Revision of the Central American and Mexican species of the Curtonotum murinum species complex (Diptera: Curtonotidae), Zootaxa 4651 (3), pp. 531-554: 551-554

publication ID

https://doi.org/10.11646/zootaxa.4651.3.7

publication LSID

lsid:zoobank.org:pub:4F0F61FD-8DC0-4FD3-B28D-2FD697F75B6D

persistent identifier

http://treatment.plazi.org/id/03D387DB-FFCE-FFB0-FF44-87FCFB3E90AF

treatment provided by

Plazi

scientific name

Curtonotum notatum Lindsay
status

sp. nov.

Curtonotum notatum Lindsay   , sp. nov.

Figures 47–51 View FIGURES 47–51

Differential diagnosis. Distinguished from congeners by the heavily marked abdomen and high ventral branch count on the antennal arista (9–13). The distal leaf-like lobe of the distiphallus is symmetrical and 3/4 sclerotized from the left side and with microtrichia on each side. The upper projection is slightly reflexed and wider apically, the lower projection is strongly sclerotized and reflexed ( Fig. 50 View FIGURES 47–51 ). Curtonotum notatum   sp nov. also has a very shallow gena (1/6 to 1/4 the width of the postpedicel). Females are here treated as indistinguishable.

Description. Male: Overall length (excluding wings): 5–7.2 mm.

Head: Vibrissa subequal to subvibrissal setae. Parafacial thin, gena approximately 1/6 to 1/4 width of postpedi- cel. Postpedicel 1.5–2 times as long as pedicel. Arista with 9–14 dorsal branches, 4–6 ventral branches.

Thorax: Scutum often with distinct grey dorsal markings. Postpronotal lobe with 3 setae, 1 long, 2 shorter sub- equal and sometimes several poorly defined setulae ventrally. Line of setulae above fore coxa black.

Legs: Legs orange or beige. Hind femur with wide dark preapical band.

Wing: Membrane light grey-brown, with indistinct infuscation around crossvein dm–m and at anterior margin.

Abdomen: Tergite 2 with 2 posterodorsal triangles, sometimes covering almost entire to entire tergal length. Tergites 3–5 with thick median vitta and distinct lateral triangles. Band on posterior margins of tergites 3–5 adjoin- ing medial and lateral markings covering 1/2 to 3/4 of tergite 3.

Male terminalia: Cercus elongate, same length as epandrium at widest point. Surstylus thin and elongate, divided into 2 lobes, inner lobe dark brown, 1/2 width as outer lobe. Structure of postgonite, hypandrium and phallapodeme unknown. Distiphallus with distal leaf-like lobe recurved at apex, 3/4 sclerotized from left side, with microtrichia on both margins. Upper process thin and wider at tip, lower process short, sclerotized and reflexed.

Female: Unknown.

Etymology. From the Latin, notata, meaning “marked”, referring to the darkly marked abdomen.

Comments. Four females matching the general external diagnosis of C. notatum   sp. nov. from Costa Rica were dissected, but no distinct terminalia characters could be identified to diagnose females of the species. No males of C. notatum   were dissected due to the lack of available non-type specimens.

Type Material. Holotype: ♂: MEXICO. Tabasco: Teapa , [17°37’11.03”N, 92°58’22.588”W] I., “36”, H. H.S. ( CMNH) GoogleMaps   . Paratypes: COSTA RICA. Alajuela: ♂, San Carlos, P.N. Arenal, sendero Pilon , 600 m, 22.II.2001, J.D. Gutierrez, L_N_457900_269100#61848 ( MNCR)   . MEXICO. Veracruz: ♂, Ocotal Chico , 600 m, 4–5.V.1985, W.N. Mathis ( USNM)   .

Other material examined. COSTA RICA. Limon: ♀, R.B. Hitoy–Cerere, Estacion Hitoy–Cerere , 100 m, 24.VI – 8.VII.2003, E. Rojas, B. Gamboa, W. Arana, L_N_184120_643471#74239   ; 2♀, Amubri , 70 m, 3–28.II.1995, G. Gallardo, L_S_385000_578100#4389 (all MNCR)   . La Lola, ♀, VII–VIII.1956, W.B. Heed, H.L. Carson, M. Wasserman ( AMNH)   . Cartago: ♀, RioTuis , 3000 m, 16–22.VII.1993, W.J. Hanson ( EMUS)   .

CMNH

The Cleveland Museum of Natural History

MNCR

Museo Nacional de Costa Rica

USNM

Smithsonian Institution, National Museum of Natural History

AMNH

American Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Curtonotidae

Genus

Curtonotum