Trachypeplus depressus, Dang, Kai, Guilbert, Eric & Bu, Wenjun, 2013

Dang, Kai, Guilbert, Eric & Bu, Wenjun, 2013, New species and records of the genus Trachypeplus Horváth (Hemiptera: Tingidae) from China, Zootaxa 3669 (4), pp. 531-550 : 532-534

Trcahypeplus depressus sp. nov.

Figs. 1–2 , 12 , 20 , 29 , 37 .

Description. Body shiny, light yellowish brown to yellowish brown, with a transversal, broad band across middle of hemelytra, pale brown to brown ( Figs. 1–2 ); head, antennae, and leg light yellowish brown, fourth antennal segment and apex of tarsus dark brown; calli black; thorax ventrally dark brown or black; abdomen ventrally yellowish to brown.

Head pilose, especially dense around eyes, armed with five long, slender, suberect spines, pointed forwards ( Fig. 12 ). Antennae pilose, hairs on the fourth segment longer, first two segments stouter, third one slender, two times as long as fourth one, fourth one inflated. Bucculae mostly biseriate, apex distinctly surpassing in front of clypeus, widely closed in front. Rostral sulcus anteriorly narrow, divergent latero-posteriorly on mesosternum, broadly widened on metasternum, there sulcus arched, cordate, slightly closed behind ( Fig. 29 ). Rostrum extending to middle of metasternum.

Pronotum long, gibbose ( Fig. 12 ). Collar bi- to triseriate wide, median portion raised forming a tectiform hood, five areolae long, dorsal margin somewhat arched in lateral view, produced forwards ( Fig. 12 ). Three carinae parallel, uniseriate, areolae tiny; lateral carinae as high as median carina. Paranota reflexed, mostly resting on pronotum, outer margins distinctly elevated; three areolae broad, areolae deeply depressed; a longitudinal ridge dividing paranota into two parts, dorsal and ventral ones; dorsal part biseriate broad and deeply depressed, ventral part uniseriate. Distance between outer margin of paranotum and lateral carina narrow anteriorly; posteriorly, this distance widening and nearly equal to distance between lateral and median carina. Distance between lateral and median carina on posterior pronotal process triseriate, broad. Calli, pronotal disc and ridges of areolae on collar, hood, paranota covered with few short curved shiny hairs.

Hemelytra long, wider than pronotum, boundary veins raised, areolae of each area very clear ( Figs. 1–2 ). Costal area nearly biseriate at its length. Subcostal area erected, narrower than costal area, biseriate. Discoidal area extending backwards, nearly as long as 2/3 of hemelytra, eight areolae broad at widest part. Sutural area eight to nine areolae broad at widest part. Hypocostal area narrow, uniseriate, areolae small and round.

Measurements. Males (N = 5) and females (N = 5) respectively. Body length: M, 2.84–3.00 (2.94), F, 2.96–3.08 (3.01); width: M, 1.22–1.30 (1.26), F, 1.26–1.30 (1.27). Length of pronotum: M, 1.40–1.50 (1.44), F, 1.44–1.52 (1.48); width: M, 0.96–1.10 (1.04), F, 1.02–1.06 (1.05). Length of hemelytra: M, 2.02–2.20 (2.11), F, 2.04–2.20 (2.11). Length of discoidal area: M, 1.14–1.30 (1.25), F. 1.22–1.36 (1.28). Antennal segments measurements: M, I: 0.11–0.13 (0.12), II: 0.10, III: 0.58–0.64 (0.62), IV: 0.27–0.28 (0.28); F, I: 0.10–0.12 (0.12), II: 0.08–0.10 (0.10); III: 0.53–0.60 (0.57); IV: 0.26–0.30 (0.28).

Material examined. Holotype: male, China, Yunnan Province, Yuanjiang County, Ailaoshan, Xujiaba, 6.III.1982. Paratypes: 7 males, 2 females, same data as holotype; 1 female, same locality as holotype, 12.V.1982; 3 females, China, Yunnan Province, Pingbian County, Daweishan Mount., alt. 1800 m, 24.V.1996, host plant: Castanopis sp., Wenjun Bu leg.; 1 female, China, Yunnan Province, Pingbian County, Daweishan Mount., alt. 1900 m, 24.V.1996, Leyi Zheng leg.; 2 males, 1 female, China, Yunnan Province, Tengchong City, Gaoligongshan Mount., alt. 1700 m, 15.VIII.2006, Xu Zhang leg.; 2 males, 1 female, China, Yunnan Province, Tengchong County, Mangbang Township, Dahaopingshe, Tanchanghe River, 22.V.2009, Bo Cai leg. These type specimens were deposited at NKUM.

Etymology. The name of this species, depressus , refers to the dorsal parts of paranota being depressed deeply, and the outer margins of paranota distinctly elevated.

Comments. By the longitudinal ridges on the paranota along the lateral margins of pronotum, like those of Trachypeplus wapi Guilbert, 2007 , Trachypeplus deperssus sp. nov. is easily distinguished from other relatives of Trachypeplus . T. depressus sp. nov. clearly differs from T. wapi by its body without spines, dorsal parts of paranota biseriate, although triseriate in T. wapi , median carina uniseriate entirely at its length whereas biseriate anteriorly in T. wapi , the rostral sulcus on metasternum is cordate, whereas it is straight in T. wapi .

T. depressus sp. nov. also shares with Heissiella Péricart, 1984 a longitudinal ridge which divides the paranota into two parts along the lateral margins of the pronotum. However, the tip of the female abdomen of T. depressus sp. nov. is not trilobed as is Heissiella (cf. Pericart 1984: 31, fig. 11); therefore, we provisionally place this new species in Trachypeplus .

Figures

FIGURES 1 – 3. Photographs of body in dorsal view. 1 – 2. Trachypeplus depressus sp. nov.; 3. Trachypeplus malloti Drake and Poor, 1936 b. The bar is 1.0 mm.

FIGURES 12 – 16. Photographs of head and pronotum in lateral view. 12. Trachypeplus depressus sp. nov.; 13. Trachypeplus parafulgoris sp. nov.; 14. Trachypeplus jingae sp. nov.; 15. Trachypeplus jacobsoni; 16. Trachypeplus fulgoris. The bar is 1.0 mm.

FIGURES 20 – 23. Photographs of head and pronotum in dorsal view. 20. Trachypeplus depressus sp. nov.; 21. Trachypeplus malloti; 22. Trachypeplus fulgoris; 23. Trachypeplus parafulgoris sp. nov. The bar is 1.0 mm.

FIGURES 29 – 33. Photographs of rostrum and sulcus in ventral view. 29. Trachypeplus depressus sp. nov.; 30. Trachypeplus fulgoris; 31. Trachypeplus parafulgoris sp. nov.; 32. Trachypeplus jingae sp. nov.; 33. Trachypeplus jacobsoni. The bar is 1.0 mm.

FIGURES 37 – 40. Drawings of the tip of female abdomen in ventral view. 37. Trachypeplus depressus sp. nov.; 38. Trachypeplus fulgoris; 39. Trachypeplus jacobsoni; 40. Trachypeplus parafulgoris sp. nov. The bar is 0.5 mm. VI = sixth abdominal segment, VII = seventh abdominal segment, Gcp-I = first gonocoxopodite, Pt-VIII = eighth paratergite, Pt-IX = ninth paratergite, Sgp = subgenital plate, TF = a transverse furrow on the VII.