Geranomyia baisensis, Zhang, Xiao, Zhang, Zehua & Yang, Ding, 2016

Zhang, Xiao, Zhang, Zehua & Yang, Ding, 2016, Five new species of Geranomyia Haliday, 1833 (Diptera, Limoniidae) from China, Zootaxa 4154 (2), pp. 139-154 : 141-144

publication ID	https://doi.org/ 10.11646/zootaxa.4154.2.2
publication LSID	lsid:zoobank.org:pub:54A803AA-1C58-4691-90A7-BCBD8DD72C99
DOI	https://doi.org/10.5281/zenodo.6091900
persistent identifier	https://treatment.plazi.org/id/03D6AA0F-421D-FFCF-67E2-F8D124C8CE3A
treatment provided by	Plazi
scientific name	Geranomyia baisensis
status	sp. nov.

Treatment

Geranomyia baisensis View in CoL sp. nov.

Figs. 18–24 View FIGURES 18 – 22 View FIGURES 23 – 24

Diagnosis. Prescutum brownish yellow to pale brown with three broad dark brown longitudinal stripes. Pleuron brownish yellow with a broad brown stripe. Wing with seven large spots on costal region; Sc1 ending about opposite 1/2 of Rs, basal section of CuA1 a short distance beyond fork of M. Lobe of gonostylus with rostral prolongation small, base with two short spines arising from a small tubercle.

Description. Male. Body length 4.5–5.5 mm, wing length 5.0–6.0 mm, mouthparts length 1.9–2.3 mm.

Head ( Fig. 19 View FIGURES 18 – 22 ). Brownish black. Setae on head brownish black. Antenna length 1.1 mm, dark brown. Scape cylindrical. Pedicel nearly globose. Flagellomeres oval, terminal flagellomere with tip cuspate. Mouthparts dark brown with brownish black setae, palpus pale brown with terminal segment darker.

Thorax. Pronotum brown with a broad dark brown median stripe. Prescutum brownish yellow to pale brown with three broad dark brown longitudinal stripes. Scutum pale yellow with middle area paler, each lobe with a large brown spot. Scutellum pale yellow with middle area and borders darker. Mediotergite brown to dark brown ( Fig. 20 View FIGURES 18 – 22 ). Pleuron ( Fig. 18 View FIGURES 18 – 22 ) brownish yellow with a broad brown stripe extending from cervical region to base of wing. Setae on thorax white. Coxae yellow; trochanters pale yellow; femora brownish yellow with pale brown subterminal rings, bases paler; tibiae brownish yellow with tips darker; tarsi brownish yellow. Setae on legs dark brown. Wing ( Fig. 22 View FIGURES 18 – 22 ) tinged pale brown with brown pattern: seven large spots on costal region; seams along cord, m-m and basal section of M3; a spot at fork of Rs. Veins brownish yellow, darker in clouded areas. Venation: Sc long, Sc1 ending about opposite 1/2 of Rs, Sc2 at its tip; basal section of CuA1 a short distance beyond fork of M. Haltere length 0.7–0.8 mm, pale yellow with knob darker.

Abdomen ( Fig. 18 View FIGURES 18 – 22 ). Tergites brownish yellow to pale brown. Sternites pale yellow. Setae on tergites brown and on sternites white.

Hypopygium ( Figs. 23–24 View FIGURES 23 – 24 ). Posterior margin of tergite nine slightly emarginate. Gonocoxite with a large and simple ventromesal lobe. Clasper of gonostylus arched at 1/2 length, abruptly narrowed to apical spine. Lobe of gonostylus large; rostral prolongation small, base with two short spines arising from a small tubercle. Paramere with mesal-apical lobe relatively stout, tip acute and curved inwards.

Female. Body length 4.5–6.5 mm, wing length 5.0–7.0 mm, mouthparts length 2.0– 2.3 mm. Similar to male, except body color darker. Cercus brownish yellow. Hypogynial valve brownish yellow with middle area darker. Tip of hypogynial valve near 1/3 of cercus ( Fig. 21 View FIGURES 18 – 22 ).

Type material. Holotype male ( CAU), China: Guangxi, Baise, Mt. Cenwanglao, Dalongping (24°29'12"N, 106°20'55"E, 1300 m), 2012. VII.28–29, Feiyang Liang & Mengchao Tan GoogleMaps . Paratypes: 4 males 5 females ( CAU), same data as holotype GoogleMaps .

Distribution. China (Guangxi).

Etymology. The species is named after the type locality Baise.

Remarks. This new species is somewhat similar to G. caloptera Mik, 1867 in having a similar clouds and venation of wing. It can be easily distinguished from the latter by the rostral prolongation with two short spines arising from a small tubercle ( Figs. 23–24 View FIGURES 23 – 24 ), whereas in G. c a l o p t er a, two longer spines arise directly from rostral prolongation ( Geiger 1986, Podenas et al. 2006). This new species also has a similar venation of wing with G. spectata (Alexander, 1937) , but it can be easily distinguished from the latter by the prescutum brownish yellow to pale brown with three broad dark brown longitudinal stripes ( Fig. 20 View FIGURES 18 – 22 ) and the wing with an evident large spot at base ( Fig. 22 View FIGURES 18 – 22 ). In G. spectata , the prescutum is almost uniformly plumbeous-gray with scarcely evident markings and the wing has no evident spot at base ( Fig. 13 View FIGURES 2 – 17 ) ( Alexander 1937a).