Dolichopeza (Nesopeza) multidentata Men, 2018

Men, Qiu-Lei, Dong, Yan, Yue, Chao, Cao, Yong & Xu, Zi-Kun, 2018, Six new species of Dolichopeza (Nesopeza) from China (Diptera: Tipulidae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 58 (2), pp. 589-608 : 599-601

publication ID	https://doi.org/ 10.2478/aemnp-2018-0050
publication LSID	lsid:zoobank.org:pub:A4D7D0F9-FF6A-4374-804B-17750DDC774E
persistent identifier	https://treatment.plazi.org/id/9E0187B3-3D3E-FFC2-3579-5ECAFB4B085F
treatment provided by	Marcus
scientific name	Dolichopeza (Nesopeza) multidentata Men
status	sp. nov.

Treatment

Dolichopeza (Nesopeza) multidentata Men View in CoL sp. nov.

( Figs 7, 10 View Figs 7–12 , 18 View Figs 13–21 , 47–57 View Figs 47–53 View Figs 54–57 )

Type locality. Simianshan Mountain, Chongqing, China, 28°39′N, 106°24′E.

Type material. HOLOTYPE: J, CHINA: CHONGQING: Simianshan Mountain, 18.v.2017, coll. Guoxi Xue, Chao Zhang. PARATYPES: 1J 1 ♀, same data as holotype.

Diagnosis. Generally grayish-brown. Prescutum grayish- -brown with three brown stripes. Wing strongly suffused with grayish-brown, stigma dark brown, costal region and wing tip slightly darker. Leg with coxa grayish-brown, trochanter whitish, femur and tibia yellowish-white with brown tip, tarsus wholly snow-white. Tergite nine heavily blackened, with obliquely truncated lateral lobes; a deep U-shaped median notch with a small angular process medially; lateral borders of tergite produced cephalad into ridges equipped with many small blackened teeth.

Description. Male. Length: body 9.5–9.7 mm, wing 9.5–9.7 mm, antenna 5.8 mm.

Head. Rostrum short, grayish-brown. Nasus lacking. Antenna grayish-brown, scape elongated and cylindrical, pedicel very short, flagellomeres gradually shorter in length. Palpus dark brown. Head grayish-brown with occiput darker in coloration medially.

Thorax. Pronotum wholly grayish-brown ( Figs 7, 10 View Figs 7–12 ). Prescutum grayish-brown with three brown stripes. Scutum, scutellum and postnotum grayish-brown ( Fig. 7 View Figs 7–12 ). Pleuron wholly grayish-brown ( Fig. 10 View Figs 7–12 ). Halter with stem grayish-brown, knob dark brown. Leg with coxa grayish- -brown, trochanter whitish, femur and tibia yellowish- -white with brown tip, tarsus wholly snow-white. Wing suffused with grayish-brown, cells c and sc not darker than ground color, stigma dark brown with conspicuously bright regions on both ends, costal region and wing tip darker; veins brown, Sc ending about opposite 4/5 of length of Rs, the latter relatively short, R 3 slightly curved, about twice as long as R 2+3, cell m 1 subequal in length to its petiolate, r-m subequal in length to basal section of R

4+5

( Fig. 18 View Figs 13–21 ).

Abdomen dark brown with yellowish ring in middle of each segment. Hypopygium dark brown. Tergite nine heavily blackened, with obliquely truncated, large lateral lobes; deep U-shaped median notch with small angular process medially; lateral borders of tergite produced cephalad into ridges equipped with many small blackened teeth ( Figs 47, 48, 50 View Figs 47–53 ). Outer gonostylus very narrowed ( Figs 47, 48, 51 View Figs 47–53 ). Inner gonostylus with basal beak truncated, with apical beak elongated and narrowed, slightly sharp at apex ( Figs 47, 48, 51 View Figs 47–53 ). Sternite nine straight ( Fig. 49 View Figs 47–53 ).

Semen pump with anterior immovable apodeme very expanded, rounded in dorsal view ( Figs 52, 53 View Figs 47–53 ). Compressor apodeme fan-shaped, relatively elongated, median ridge very developed ( Figs 52, 53 View Figs 47–53 ). Posterior immovable apodeme subequal in length to compressor apodeme, broadened basally and gradually narrowed to apex in dorsal view ( Figs 52, 53 View Figs 47–53 ).Aedeagal guide very developed, forming thin panel extending from semen pump posteriorly, expanded apically in lateral view, with folded membranous extensions on dorsal side, medially with finger-shaped process at caudal margin ( Figs 52, 53 View Figs 47–53 ). Aedeagus narrowed in basal 1/4, broadened subsequently, and then gradually narrowed to end, with numerous black teeth in apical half ( Figs 52, 53 View Figs 47–53 ).

Female. Length: body 9.8–10.0 mm, wing 10.0–10.2 mm, antenna broken.

Antenna broken, scape, pedicel and first flagellomere grayish-brown. Leg with coxa grayish-brown, trochanter whitish, femur and tibia yellowish-white with brown tip, tarsus wholly snow-white. Abdomen dark brown with yellowish ring in middle of each segment. Ovipositor brown ( Figs 54, 55 View Figs 54–57 ). Cercus long, acinacifoliate ( Figs 54, 55 View Figs 54–57 ). Hypogynial valve simple, slightly surpassing caudal margin of tergite ten, rounded apically ( Figs 54, 55 View Figs 54–57 ).

Internal reproductive system. Consisting of bursa copulatrix terminating in functional spermatheca, three spermathecae with corresponding spermatheca ducts, and vaginal apodeme ( Figs 56, 57 View Figs 54–57 ). Bursa copulatrix relatively elongated, thick; basal 2/5 folded and expanded, smoo- thed subsequently, smooth region narrowed at base and broadened apically, brown inner layer extending to distal 1/3 of smooth region; bursa copulatrix terminating in elongated swollen functional spermatheca ( Figs 56, 57 View Figs 54–57 ). Spermatheca pear-shaped, black ( Fig. 56 View Figs 54–57 ). Spermatheca duct slender and flexible, generated from basal 1/3 of bursa copulatrix. Spermatheca ducts attach separately to bursa copulatrix at same level ( Figs 56, 57 View Figs 54–57 ). Vaginal apodeme strongly sclerotic, broad basally, gradually narrowed to apex ( Fig. 56 View Figs 54–57 ). Female internal reproductive system with copulatory opening on ventral side of sternite nine, very large ( Fig. 56 View Figs 54–57 ).

Differential diagnosis. The new species is mostly similar to the Chinese species Dolichopeza (Nesopeza) leucocnemis Alexander, 1940 in the shape of tergite nine and outer gonostylus, but differs from the latter in distinctly longer antenna (half that length in the related species), a small median process in the U-shaped notch (lacking such process in the related species), the outer gonostylus lacking node (with a node at base of outer gonostylus in the related species).

Etymology. The specific name is derived from the Latin prefix ʻ multi- ʼ and adjective ʻ dentata ʼ, referring to the presence of teeth on the aedeagus.

Distribution. China: Chongqing.