Perittopus crinalis, Ye, Zhen, Chen, Pingping & Bu, Wenjun, 2013

Ye, Zhen, Chen, Pingping & Bu, Wenjun, 2013, Contribution to the knowledge on the Oriental genus Perittopus Fieber, 1861 (Hemiptera: Heteroptera: Veliidae) with descriptions of four new species from China and Thailand, Zootaxa 3616 (1), pp. 31-48 : 34-36

Perittopus crinalis sp. nov.

Figs. 1, 9, 18, 22, 31, 36, 42.

Material examined. Holotype: apterous female, CHINA: Yunnan Province, Xishuangbanna, Menglong town, Mengsong village, 27. IV. 1958 (NKUM). Paratypes: 2 males and 1 female, apterous (NKUM), 1 male and 1 female, apterous (NCTN), same data as holotype; 7 males and 1 female, apterous, Yunnan Province, Xishuangbanna, Menglong town, Mengsong village, 27. IV. 1958, 1600 m, leg. Yi-ran Zhang (IZAS).

FIGURES. 9 – 13. Anterior bodies of apterous morph of Perittopus spp. in dorsal view (female) 9 P. crinalis sp. nov., holotype, 10 P. falciformis sp. nov., holotype, 11 P. yunnanensis sp. nov., holotype, 12 P. zhengi sp. nov., holotype, 13 P. asiaticus Zettel, 2001, paratype. Scale 1.0 mm.

Description of apterous female (Fig. 1). Color: ground color light reddish, head reddish, labrum brownish, with buccula orange, rostrum yellowish with black apex; antennae shining black except basal part of antennal segment 1 yellowish; pronotum reddish, medial part with slightly blackish mark (not distinct) (Fig. 9), posterior part with scattered dark punctures, behind head along anterior margin with row of dark punctures; legs mainly dull orange, apex of femora and tarsi blackish; abdomen dorsum mainly reddish except lateral parts of mediotergites 2–4 with blackish marks (Fig. 18); abdomen venter orange. Structural characteristics: body length 3.17–3.25 (holotype: 3.25), medium-sized, stout, spindle shape in dorsal view, mainly with short, blackish, appressed pubescence and dorsum anteriorly and laterally covered by suberect, thicker, blackish hairs; head deflected, head length: 0.39–0.41, head width: 0.72–0.73, about 1.82 times head length, hind margin of head laterally and ventrally with black peg-like spiculae; antennae relatively short and stout, about 0.48 times as long as body, lengths of antennal segments 1–4: 0.41, 0.34, 0.38, 0.42; pronotum hind margin broadly rounded, pronotum length: 1.04–1.07, pronotum width: 1.19–1.21, medially reaching hind margin of abdominal mediotergite 1, lateral part of pronotum medially with distinct constriction (Fig. 9), posterior part distinctly wider than anterior, posterior part with scattered dark punctures, behind head along anterior margin with row of dark punctures, mesonotum and metanotum completely hidden beneath pronotal lobe except laterally, prosternum anteromedially with one row of black peg-like spiculae; legs mainly with decumbent and suberect blackish hairs, tarsi of fore leg short and incrassate, tarsi of middle and hind legs long and slender; lengths of leg segments (femur, tibia, and tarsi): fore leg: 0.85, 0.79, and 0.34 (0.04 + 0.3), middle leg: 1.0, 1.12, and 0.88 (0.28 + 0.29 + 0.31), hind leg: 1.11, 1.49, and 0.6 (0.08 + 0.17 + 0.35); mediotergites not flat, after mediotergite 3 distinctly depressed; connexiva slightly stout and strongly raised, moderately convergent (Fig. 18), the smallest distance between connexiva at apex of segment 7 approximately 3.5 times thickness of one connexivum, connexiva 6–7 with rather dense, relatively long, posterodorsad directed and black hairs (Fig. 22), mediotergites 1–3 with short, sparse hairs; mediotergites 4–6 almost bare; hind margin of mediotergite 7 with relatively short, sparse, posterodorsad directed and blackish hairs, connexivum 8 with rather dense, blackish hairs in caudal aspect, mediotergite 8 with short, thinner hairs. Genital segments: gonocoxa 1 simple, platelike, exposed; procitiger small, directed posteriad, with dense, short hairs.

Description of apterous male. Color as in female, but lateral parts of abdominal mediotergites 2–4 with blackish mark. Body length 2.91–2.95; structure of head including antennae as in female, head length: 0.31–0.33, head width: 0.71–0.73, about 2.21 times head length, antennae about 0.51 times as long as body, lengths of antennal segments 1–4: 0.42, 0.32, 0.36, 0.41; pronotum medially with a transversal constriction, posterior part slightly wider than anterior, pronotum length: 1.0–1.13, pronotum width: 1.1–1.25; lengths of leg segments (femur, tibia, and tarsi): fore leg: 0.68, 0.65, and 0.29 (0.05 + 0.24), middle leg: 1.0, 1.15, and 0.94 (0.25 + 0.29 + 0.4), hind leg: 1.09, 1.4, and 0.55 (0.1 + 0.2 + 0.25); grasping comb relatively long, about 0.3 times fore tibia length; abdomen pleurally and ventrally without special modification, mediotergites almost flat, connexiva narrow, slightly raised, weakly convergent, all mediotergites and laterotergites with short and long blackish hairs; segment 8 (Fig. 31) about 1.4 times as long as wide, with dorsal hind margin concave, pygophore and proctiger ( Fig. 36 ) simple, paramere ( Fig. 42 ) with relatively broad basal part and sub-triangular distally twisted and slender part, apically slightly acute; other characters as in apterous female.

Macropterous female and macropterous male are unknown.

Etymology. The specific epithet “ crinalis ” (from Latin, meaning “long, thick hairs”) is used to denote the character of female connexiva with long, thick, dense hairs.

Diagnosis. P. crinalis sp. nov. seems to be closely related to P. breddini ; however, in the apterous morph of the female, P. c r i n a l i s sp. nov. can be distinguished by its connexiva distinctly convergent (Fig. 18) and its pronotum in the center indistinctly blackish mark (Fig. 9) ( P. breddini with a distinctly heart-shape blackish mark in center of pronotum). In the apterous morph of male, the paramere can be easily distinguished from P. breddini by its characteristic shape: relatively broad basal part and sub-triangular distally twisted and slender part, apically slightly acute ( Fig. 42 ).

Figures

FIGURES 36 – 40. Proctigers of Perittopus spp. in dorsal view (male) 36 P. crinalis sp. nov., 37 P. falciformis sp. nov., 38 P. yunnanensis sp. nov., 39 P. zhengi sp. nov., 40 P. asiaticus Zettel, 2001. Scale 0.2 mm.

FIGURES 41 – 45. Parameres of Perittopus spp. (41 – 45 a. in lateral view; 45 b. in perpendicular view) (male) 41 P. yunnanensis sp. nov., 42 P. crinalis sp. nov., 43 P. zhengi sp. nov., 44 P. asiaticus Zettel, 2001, 45 a P. falciformis sp. nov., 45 b P. falciformis sp. nov.. Scale 0.1 mm.