Libnotes (Libnotes) pseudonohirai, Men, 2015

Men, Qiu-Lei, 2015, Two new species of the genus Libnotes Westwood (Diptera: Limoniidae) from China, with a key to Chinese species, Zoological Systematics 40 (1), pp. 79-85 : 82-84

Libnotes (Libnotes) pseudonohirai sp. nov. ( Figs 5–8 )

Length. Body, male 10.6–10.8 mm (n= 3). Wing, male 17.3–17.5 mm (n= 3).

Rostrum dark brown, slightly shorter than head; palpi black; eyes black; antennae brown throughout, scape elongate and cylindrical, pedicel spherical, flagellum with flagellomeres one to six spherical, gradually smaller, remainder of flagellomeres slender and cylindrical. Head light brown.

Pronotum light brown, a little darker in middle. Prescutum with ground color festucine-yellow, patterned with two median stripes, almost extending entire length of prescutum, converging at apical part and forming a semicircle, humeral region tinged with black ( Fig. 6 ); scutellum yellow; postnotum pale brown. Pleura festucine-yellow, unpatterned ( Fig. 5 ). Halteres with stem brown, knob dark brown. Legs with coxae and trochanters yellow; femora festucine-yellow, with a pale brown subterminal ring that is as broad as yellow tip; tibiae pale yellow, tip pale brown; tarsi pale brown ( Fig. 5 ). Wings suffused with pale yellow, Sc with a spot at tip, R 1 with a spot at same level of spot on Sc, apically with another spot, Rs with marking at origin ( Fig. 5 ). Fork of Rs, r-m, and forks of M tinged with dark brown ( Fig. 5 ). Venation: Rs relatively curve, Sc ending beyond fork of Rs, R 2+3 parallel to R 4+5, M 1+2, M 3 and CuA 1 at apical part ( Fig. 5 ).

Abdominal segments festucine-yellow, lateral margins of tergites very narrowly pale, apparent only on more proximal segments, caudal margins of segments narrowly more yellow, middle part of tergite suffused with irregular stripe ( Fig. 5 ). Hypopygium pale yellow. Male hypopygium with ninth tergite rounded at caudal margin ( Fig. 8 ). Gonocoxite narrow, slightly longer than inner gonostylus, with ventromesal lobe broad and elongate, almost reaching end of aedeagus ( Figs 7–8 ). Inner gonostylus subtriangular in ventral view, a bifurcated prominence on surface at base, upper prominence long, with a wisp of long setae at apex, lower prominence short, densely covered with strong setae, rostral prolongation relatively slender ( Figs 7–8 ). Outer gonostylus hook-shaped, curved at end, expanded at basal one-third ( Figs 7–8 ). Paramere with mesal-apical lobes broad, straight at inner margins ( Figs 7–8 ). Aedeagus relatively thick, bifid at apex ( Figs 7–8 ).

Remarks. This new species is similar to a Palaearctic species L. (L.) nohirai Alexander, 1918 by the colorations of the antennae and thorax, and by the markings on wing and abdomen. It can be easily distinguished from the latter by the femora with a pale brown subterminal ring which is as broad as the yellow tip as shown in Fig. 5 (femora without subterminal ring, tip broadly black in L. (L.) nohirai as described by Alexander, 1918: 445 and illustrated at the website of CCW, Oosterbroek, 2014), by the costal and subcostal cells not bright yellow, same with ground color (costal and subcostal cells bright yellow in L. (L.) nohirai as described by Alexander, 1918: 445 and illustrated at the website of CCW, Oosterbroek, 2014), and by the gonocoxite with ventromesal lobe broad and elongate as illustrated in Figs 7–8 (relatively narrow in L. (L.) nohirai as illustrated in Podenas & Gelhaus, 2007: 66, Fig. 120. 2).

Material examined. Holotype male, China, Anhui Province, Yuexi, Yaoluoping National Nature Reserve (elev. 1000 m), 14 August 2013, coll. Qiu - Lei Men. Paratypes 2 males, China, Anhui Province, Yuexi, Yaoluoping National Nature Reserve (elev. 800 m), 17 August 2013, coll. Zheng - Kui Liu .

Distribution. China (Anhui).

Etymology. The specific epithet bases on the name of a related species, nohirai , with Latin prefix ‘ pseudo ’, referring to the morphological similarity of the new species to nohirai .

Figures

Figs 5–8. Libnotes (Libnotes) pseudonohirai sp. nov. 5. Habitus of male adult, lateral view. 6. Thorax, dorsal view. 7. Hypopygium, ventral view. 8. Hypopygium, dorsal view. Scale bars: 1=5.0 mm, 2=1.0mm, 3–4=0.5mm.