http://www.paper.edu.cn Zootaxa 1271: 57–68 (2006) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ ZOOTAXA 1271 Copyright © 2006 Magnolia Press ISSN 1175-5334 (online edition) A study on genus Chlamydatus Curtis, 1833 from China (Heteroptera: Miridae: Phylinae) XIAO-MING LI & GUO-QING LIU Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China. E-mail: [email protected] Abstract Five species of Chlamydatus Curtis from China are presented of which two, Chlamydatus laminatus and Chlamydatus sichuanensis, are described as new. A key for discrimination of the Chinese species is given. Photographs of the dorsal habitus, scanning electron micrographs of the metathorax scent-gland, and illustrations of the male genitalia and legs are provided. All type specimens are deposited in the Institute of Entomology, Nankai University, Tianjin, China. Key words: Heteroptera, Miridae, Chlamydatus, new species, China Introduction Curtis (1833) erected the genus Chlamydatus, assigning it to the subfamily Phylinae. Wagner (1975) presented keys to subgenera and species, and illustrated the male genitalia. His work focused on the European fauna. Kelton (1965) revised Chlamydatus for North America, and included much new distributional information. Schuh and Schwartz (2005) thought Kelton’s paper had two weaknesses. The first was the acceptance of some flawed species concepts and the misidentification of certain taxa. Second, Kelton’s key relied heavily on pubescence type and coloration. As a consequence, Schuh and Schwartz (2005) reviewed the genus for North American and described two new species. In their papers, revised diagnoses, digital habitus illustrations, illustrations of male genitalia and legs, scanning micrographs of diagnostic features, and new distributional records are provided. Herein, our information on the Chinese Chlamydatus species is presented in a manner easily comparable to those contained in Schuh and Schwartz (2005). Kiritshenko (1931) was the first to study the Chlamydatus from China, and he (1931) described C. pachycerus Kiritshenko from Xizang (Tibet). Hsiao and Meng (1963) recorded C. pullus (Reuter) collected in cotton fields from China. Bao-ying, Qi and Accepted by C. Schaefer: 28 Jun 2006; published: 24 Jul. 2006 57 转载 中国科技论文在线 http://www.paper.edu.cn ZOOTAXA Nonnaizab (1995) recorded C. pulicarius (Fallén) from North China. 1271 In this paper, five species of Chlamydatus from China are treated, with two described as new to science. A key for identification of the Chinese species is given. The digital habitus figures, illustrations of the male genitalia and legs, and scanning micrographs of metathorax scent-gland are also provided. Detailed distributional information is listed for most material examined, including number and sex of specimens, except C. pachycerus. Materials and methods All genitalic illustrations were made from temporary slide mounts in lactophenol, using an Olympus SZ-ST microscope. Dorsal view photographs were made with a Nikon SMZ1000 apparatus. Scanning electron micrographs were prepared on a FEI Quanta200 microscope. All measurements are in millimeters. The type specimens are deposited in the Institute of Entomology, College of Life Sciences, Nankai University, Tianjin, China. Taxonomy Chlamydatus Curtis, 1833 Chlamydatus Curtis 1833: 198. Type species: Chlamydatus marginatus Curtis, 1833 Diagnosis: Small, elongate oval or ovate; sometimes submacropterous with membrane shortened and just covering abdomen, or brachypterous leaving much of abdomen exposed; coloration of body dark, often entirely black; eyes bulging and often extending laterally beyond anterolateral angles of pronotum; antennal segment II usually slender, generally no longer than width of head; femora moderately broad; claws only moderately elongate, nearly straight over much of length, pulvilli relatively large, adnate to at least basal half of ventral claw surface; parempodia setiform; vestiture of dorsum composed of simple setae, dull black to silvery or golden and shining, sometimes appearing neatly arranged. Male genitalia: Vesica with a single strap, apical attenuation single; gonopore relatively large, closed both proximally and distally; phallotheca strongly sclerotized; left paramere conventional phyline; right paramere lanceolate. Dark-colored Chlamydatus spp. are most easily confused with some of the small black species of Plagiognathus Fieber and Phoenicocoris Reuter, but they can be distinguished by the male genitalia and setae on the dorsum. 58 © 2006 Magnolia Press LI & LIU 中国科技论文在线 http://www.paper.edu.cn Key to the Chinese species of Chlamydatus Curtis ZOOTAXA 1271 1 Body length shorter than 2.00 .............................................. C. pachycerus Kiritshenko - Body length more than 2.10 .......................................................................................... 2 2 Fore- and middle femora entirely yellow, never basal infuscation, hind femora dark brown to nearly black, pale distally, in marked contrast to fore- and middle femora (Fig. 17).................................................................................... C. sichuanensis sp. nov. - Coloration of femora not as above, coloration of hind femora not strongly contrasting with that of fore- and middle femora (Figs. 13–16)...................................................... 3 3 Femora yellow, with dark spots (Fig. 13); phallotheca with a lobelike projection dor- sally (Fig. 19) ................................................................................ C. laminatus sp. nov. - Femora dark, with pale distal bands or not (Figs. 14–16); phallotheca not as above ... 4 4 Smaller species, length less than 2.40; vesica tapering towards apex (Fig. 24); apical portion of phallotheca tapered (Fig. 25)............................................. C. pullus (Reuter) - Larger species, length longer than 2.65; vesica greatly elongated and not tapering towards apex (Fig. 21); apical portion of phallotheca greatly elongate and slender (Fig. 22) .................................................................................................C. pulicarius (Fallén) TABLE 1. Measurements of Chlamydatus species Species Range Body Head Interocular Eye AntSeg2 Pronotum Pronotum and sex length width distance width length length witdth laminatus Male minimum 2.60 0.62 0.33 0.16 0.59 0.39 0.98 maximum 2.81 0.71 0.37 0.17 0.68 0.43 1.04 Female minimum 2.32 0.60 0.32 0.12 0.56 0.36 0.86 maximum 2.64 0.66 0.36 0.15 0.61 0.42 1.02 pulicarius Male minimum 2.97 0.79 0.38 0.21 0.69 0.54 1.05 maximum 3.24 0.84 0.45 0.26 0.76 0.57 1.38 Female minimum 2.65 0.78 0.36 0.21 0.60 0.49 0.95 maximum 2.81 0.84 0.47 0.23 0.72 0.53 1.06 pullus Male minimum 2.37 0.68 0.31 0.15 0.57 0.42 0.83 maximum 2.40 0.71 0.36 0.17 0.60 0.43 0.90 Female minimum 2.12 0.66 0.30 0.14 0.53 0.38 0.83 maximum 2.30 0.67 0.32 0.15 0.56 0.39 0.88 sichuanensis Male minimum 2.57 0.62 0.31 0.17 0.61 0.34 0.90 maximum 2.68 0.66 0.32 0.18 0.63 0.37 0.93 Female minimum 2.28 0.58 0.31 0.12 0.54 0.32 0.83 maximum 2.40 0.60 0.34 0.14 0.55 0.34 0.91 CHLAMYDATUS © 2006 Magnolia Press 59 中国科技论文在线 http://www.paper.edu.cn ZOOTAXA Chlamydatus laminatus sp. nov. 1271 (Figs. 1–2, 9, 13, 18–20) Type specimens: Holotype: male, CHINA: Xiaojin County (30°59'N, 102°21'E), Sichuan Province, alt. 2350m, 26.viii.1963, Le-yi Zheng leg.. Paratypes: 3 males, 6 females, same data as holotype. Diagnosis: Recognized by the small size, total length 2.32–2.81, the ovoid shape, the dark coloration of body, the yellow femora with dark spots, and the form of male genitalia. Most similar to C. pullus in size and coloration of dorsum, but distinguished by the structure of phallotheca and the coloration of femora. The new species has a lobelike projection on the dorsum of the phallotheca (Fig.19), whereas the phallotheca of C. pullus is without a lobelike projection (Fig.25); the femoral coloration is also different (Figs.13, 16). Description: Male (Fig. 1): Macropterous, elongately oval. Coloration: Dorsum black; eye brown with margin pale; antennae unicolorous black, covered with dark hairs; clypeus black; buccula yellow, with pale long setae; labium deep brown; exposed part of mesoscutum black; membrane of wing fumose, without any spots; coxae dark; femora pale brown, with dark spots (Fig. 13); tibiae pale brown; tibial spines black, with distinct black bases; tarsal segment III and claw blackish brown; body beneath blackish brown. Structure: Dorsum smooth, weakly shining, covered with recumbent, pale, simple setae; antennal segment I with 2 blackish brown setae at the middle; anterolateral angles of pronotum with a long erect spine; abdominal venter with shining, recumbent hairs; head almost vertical; clypeus nearly obscured from above; vertex broad, relatively flat in dorsal view, posterior margin of vertex straight; eyes more or less conforming to anterior margin of pronotum, occupying almost total height of head in lateral view; dorsal margin of antennal fossa at level of ventral margin of eye; total segments III and IV longer than length of segment II; labium reaching to about posterior margin of middle trochanters; hemelytra nearly parallel-sided, corial margin slightly convex, hemelytra weakly deflexed at fracture; membrane relatively developed; metathoracic scent-gland evaporatory area as in Fig. 9. Male genitalia (Figs. 18–20): Vesica relatively small with a short apical attenuation, secondary gonopore well sclerotized, situated near apex of vesica; left paramere boat- shaped; right paramere lanceolate; phallotheca distinctive from other species of this genus, with a lobelike projection dorsally. Female (Fig. 2): The coloration and surface are similar to male. But the size smaller than male, body broader, hemelytra more convexly rounded. Distribution: China (Sichuan ). Etymology: Named for the dorsal lobelike projection of the phallotheca. 60 © 2006 Magnolia Press LI & LIU 中国科技论文在线 http://www.paper.edu.cn ZOOTAXA 1271 FIGURES 1–8. Habitus views of Chlamydatus spp. 1. laminatus (male); 2. laminatus (female); 3. pulicarius (male); 4. pulicarius (female); 5.