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Heteroptera, Reduviidae, Emesinae) in Thailand 457-474 © Biologiezentrum Linz/Austria; Download Unter

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Heteroptera, Reduviidae, Emesinae) in Thailand 457-474 © Biologiezentrum Linz/Austria; Download Unter ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Denisia Jahr/Year: 2006 Band/Volume: 0019 Autor(en)/Author(s): Ishikawa Tadashi, Okajima Shuji Artikel/Article: The assassin bug genus Emesopsis (Heteroptera, Reduviidae, Emesinae) in Thailand 457-474 © Biologiezentrum Linz/Austria; download unter www.biologiezentrum.at The assassin bug genus Emesopsis (Heteroptera, Reduviidae, Emesinae) in Thailand1 T. ISHIKAWA & S. OKAJIMA Abstract: Six species of the emesine assassin bug genus Emesopsis UHLER are reported from Thailand. Two of them are the previously described species, E. albispinosa and E. nubila, and the others are described as new species, E. bifurcata nov.sp. (including material from Vietnam), E. ernsti nov.sp., E. heissi nov.sp. and E. parvispinea nov.sp. Key words: Emesinae, Emesopsis, Ploiariolini, Reduviidae, Thailand. Introduction Material and Methods Emesopsis UHLER belongs to the tribe Male and female genitalia were soaked Ploiariolini of the assassin bug subfamily in hot 10 % KOH solution for about five Emesinae and is distinguished from the minutes, and the endosoma of the male ge- other genera of the tribe by the protarsus at nitalia was pulled out of the phallosoma most one-fourth as long as the protibia and with forceps. Observations were made under the hemelytron with a small quadrate basal a stereoscopic microscope (Olympus SZH10) and a compound microscope cell situated at inner anterior angle of discal (Olympus CH2). Illustrations were drawn cell. using the stereoscopic microscope for Figs Twenty-three species have been de- 25-28, 36-39, 47-50 and 59-62, and the scribed from the Oriental and Australian compound microscope for Figs 29-35, 40-46, Regions, including the tropicopolitan E. nu- 51-58 and 63-69, each with the aid of a bila UHLER 1893 (MALDONADO CAPRILES drawing tube. After observations, genitalia 1990; ISHIKAWA & YASUNAGA 2004; were preserved in small glass tubes with glycerin. Specimens shown in Figs 1, 2 and ISHIKAWA & OKAJIMA 2004). However, no species has been reported from Thailand. 9-12 were photographed before dissection of genitalia. In a series of Emesopsis specimens re- The material used in this study is pre- cently obtained from Thailand, we con- served in the Laboratory of Insect Re- firmed six species; two of them were identi- sources, Faculty of Agriculture, Tokyo Uni- cal with E. nubila UHLER and E. albispinosa versity of Agriculture, Kanagawa, Japan. All ISHIKAWA & OKAJIMA, the latter only measurements are given in mm. Terminolo- known from southern Vietnam so far, and gy generally follows that of WYGODZINSKY the others were not corresponding to any (1966). described species. In this paper, we describe four new species, and provide diagnoses for E. albispinosa and E. nubila. Denisia 19, zugleich Kataloge der OÖ. Landesmuseen 1 This paper is dedicated to Dr. DI Ernst Heiss to celebrate his 70th birthday. Neue Serie 50 (2006), 457–474 457 © Biologiezentrum Linz/Austria; download unter www.biologiezentrum.at Figs 1-12: Emesopsis spp., dorsal (1, 3, 5, 7, 9, 11) and lateral (2, 4, 6, 8, 10, 12) views. (1, 2) E. albispinosa, male; (3, 4) E. bifurcata, male; (5, 6) E. ernsti, male; (7, 8) E. heissi, male; (9, 10) E. nubila, male; (11, 12) E. parvispinea, male. Scales: 2.0 mm. 458 © Biologiezentrum Linz/Austria; download unter www.biologiezentrum.at Taxonomy pronotum discally yellowish brown with long erect setae (Figs 1, 2), the antennal Genus Emesopsis UHLER 1893 segment I covered with long erect setae, Emesopsis UHLER 1893: 718 (nov.gen.), type which are about 3.5 times as long as maxi- species by monotypy: Emesopsis nubilus UHLER mum width of the segment I, the scutellum 1893. with a whitish apical spine, the pygophore Calphurnia DISTANT 1909: 502, type species by with a spine-shaped posterior process, the monotypy: Calphurnia reticulata DISTANT 1909 (= paramere slender, weakly tapered and api- Emesopsis nubila UHLER 1893) (syn. by cally curved, the endosoma of phallus with WYGODZINSKY & USINGER 1960: 243). two pairs of long membranous expansions in Hadrocranella HORVÁTH 1914: 647, type species addition to a pair of vesica arms, the vesica by monotypy: Hadrocranella imbellis HORVÁTH arm dorsally spinulate at basal 1/3 and 1914 (syn. by WYGODZINSKY & USINGER 1960: 243). abruptly upturned at middle, and the styloid Emesopsis (Hadrocranella): MCATEE & MALLOCH of the female narrow, arched posteriorly and 1926: 119. slightly projected posteriad at middle (Fig. This genus is characterized by having 56). Body length 6.4-6.8 mm. the head and thorax usually with densely Remarks: This species was recently de- distributed, long, wooly, decumbent setae, scribed from southern Vietnam by ISHIKAWA the rostral segment II distinctly swollen, the & OKAJIMA (2004). The discovery of this pronotum not carinate laterally, the meta- species in northern Thailand indicates that notum with a spine, the profemoral spines the species may be widely distributed in In- much shorter than width of the profemur, dochina. the protarsus at most one-fourth as long as the protibia, the hemelytron with a small, Emesopsis bifurcata nov.sp. quadrate basal cell situated laterally at base (Figs 3, 4, 14, 20, 25-35) of a discal cell, the hindwing with a distinct Type series: Holotype: = (Figs 3, 4, 14, 25-27), hamus, and the pygophore with a posterior Mae Sa, 400-450 m alt., Mae Rim, Chiang Mai, process (WYGODZINSKY 1966). Thailand, 15.v.2002, T. Ishikawa. Paratypes: WYGODZINSKY & USINGER (1960) and Thailand: same data as holotype: 1=, 2YY; = WYGODZINSKY (1966) stated that Emesopsis same locality as holotype: 1 (Figs 29-31), 1.vi- is most diverse in the Philippines, Peninsu- ii.2001, S. Nagashima; 3YY (one shown in Fig. lar Malaysia and New Guinea. However, it 32), 16.v.2002, T. Ishikawa. Vietnam: Mai Chau, Hoa Binh, 1= (Figs 20, 28, 33-35), 11.viii.2000, was suggested by ISHIKAWA & OKAJIMA S. Okajima. (2004) that a greater number of species Diagnosis: Recognized by head and pro- would be found throughout tropical conti- notum discally yellowish brown with long nental Asia. Their suggestion is corroborat- erect setae (Figs 3, 4), dark mesocoxa with ed by the present discovery of six species of Emesopsis in Thailand. brownish yellow apex, paramere strongly bent upward at apical 1/3 and bifurcate at Specimens of all species examined in apex (Fig. 31), asymmetrical endosoma of this study were collected for the most part phallus with a spinose expansion and a large, from dead, drooping leaves of banana, Musa flattened, sclerotized expansion in addition acuminata (Musaceae), growing along forests to a pair of vesica arms (Figs 33-35), and and on grasslands beside a river. vesica arm bent at apical 1/3 and armed with many small spines near apex (Figs 33-35). Emesopsis albispinosa ISHIKAWA & OKAJIMA 2004 (Figs 1, 2, 13, 19, 56) Description: Emesopsis albispinosa ISHIKAWA & OKAJIMA 2004: Male: Coloration: Body generally dark 167. brown (Figs 3, 4). Dorsum of head and disc Specimens examined: Thailand: Pan Klang, 1,000- of pronotum yellowish brown (Fig. 3). An- 1,200 m alt., Doi Mae Tho, Chinag Mai: 1= (Figs 1, 2, 13), 2YY (one shown in Figs 19, 56), 7.vi- tennal segment I brownish yellow; segments ii.2001, T. Ishikawa; Ban Maeo, 1,000 m alt., Doi II, III and IV dark brown. Rostrum dark Pui, Chiang Mai: 1Y, 9.viii.2001, T. Ishikawa. brown, with apex of segment I and base of Diagnosis: Recognized by the head and segment III pale. Scutellar and metanotal 459 © Biologiezentrum Linz/Austria; download unter www.biologiezentrum.at Figs 13-18: Femora of Emesopsis spp. (13) spines brownish yellow. Proleg brownish yel- Pronotum 1.2 times as long as head, 1.3 E. albispinosa; (14) E. bifurcata; (15) E. low; coxa dark brown at base and on apical times as long as humeral width, sparsely ernsti; (16) E. heissi; (17) E. nubila; (18) E. 1/3; trochanter dark brown; femur (Fig. 14) covered with long erect setae intermixed parvispinea. Scales: 0.5 mm. irregularly darkened at apex, middle and with wooly decumbent setae; anterior lobe base; tibia darkened on apical 1/10, with nar- with several pairs of glabrous areas; posteri- row dark annulation at basal 1/10 and broad or lobe 1.4 times as long as anterior lobe, dark annulation at basal 2/5; tarsal segment with anteriorly arcuate posterior margin. II dark brown basally. Meso- and metalegs Scutellum apically with short spine horizon- brownish yellow; femur weakly darkened tally produced posteriad. Metanotal spine subapically; mesocoxa dark brown, with erect, with acute apex. apex brownish yellow. Hemelytron (Fig. 20) Proleg (Figs 14, 26, 27) covered with brownish yellow, decorated with about 9 long, suberect and decumbent setae inter- transverse, vein-like, dark brown markings mixed with short decumbent setae; coxa on basal half, and with many irregular, small about 8 times as long as its maximum width; to medium-sized, brownish markings on api- femur 1.9 times as long as coxa, about 11 cal half. Abdomen dark brown. times as long as its maximum width, with an- teroventral and posteroventral series of 1 Structure: Head (Fig. 25) 1.7 times as large, 3 medium-sized and about 65 small long as width across eyes, sparsely furnished spines and conical tubercles each; basal-most with long, erect, apically curved setae spine of posteroventral series largest, situated densely intermixed with wooly decumbent near junction of trochanter and femur (Fig. setae; anteoculus about 0.8 times as long as 27); tibia 0.8 times as long as femur; tarsus 2- postoculus; interocular furrow arched poste- segmented, 0.15 times as long as tibia. Meso- riad. Eye large, prominent laterad, not and metalegs slender; femur covered with reaching level of ventral surface of head in suberect setae on basal 1/3 and with short lateral view (Fig.
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