Dendrocellus confusus (Hansen) Liang & Kavanaugh, 2007

Liang, Hongbin & Kavanaugh, David H., 2007, Review of the Genus Dendrocellus Schmidt-Göbel (Coleoptera: Carabidae: Dryptini), with Descriptions of Seven New Species, The Coleopterists Bulletin (Oxford, England) 61 (1), pp. 1-39 : 1-39

Dendrocellus confusus (Hansen) , new combination

( Figs. 4 , 30 , 67 , 73–74 )

Desera confusa Hansen 1967: 406 ( Laos)

Specimens examined. Total 24 specimens: China : 2 males, ‘‘ Fujiang , Jiangle , Longqishan’ ’/‘‘ 1991.V.20, Wenzhu Li collector’ ’; 1 male, ‘‘ Fujiang , Aotou ,

1980.6.22, by light trap, Juchang Huang collector’’; 1 female, ‘‘Fujiang, Xiadaoshui’’/‘‘ 1980.VI.25, Yuanhong Chen collector’’; 1 male, ‘‘Guangdong, Zhanjiang, 1982.9.23 ’’/‘‘On sugarcane, Jiao Chen collector’’; 1 male (BMNH), ‘‘Guangxi, Jinxiu, Luoxiang, 450 m, 2000.VI.30, Jian Yao collector’’; 1 female, ‘‘Guangxi, Jinxiu, Linhai Shanzhuang, 1,000 m, 2000.VII.2, Jian Yao collector’’; 1 female, ‘‘Guangxi, Jinxiu, Shengtangshan, 900–1,900 m, 2000.VI.28, Wenzhu Li collector’’; 1 male (IOZ) and 1 female (BMNH), ‘‘Guangxi, Jinxiu’’/‘‘By light trap, 1983.V.31, Subai Liao collector’’. India: 1 female (ISNB), ‘‘Inde’’/‘‘Coll. P. Dupuis’’/‘‘ Desera geniculata , det. P. Dupuis’’/‘‘ Desera geniculata Kl. ’’/‘‘Coll. R. I. Sc. N. B. Inde’’. Indonesia: 1 female (ISNB), ‘‘Java’’/‘‘Collection P. Dupuis’’/ ‘‘Coll. R. I. Sc. N. B. Java’’; 1 female (ZMHU), ‘‘ Java, Boemi Ajoe’’/ ‘‘ Dendrocellus geniculatus, Fairm. ’’; 1 male (ZMHU), ‘‘ Java, Baugalan, 1922’’/ ‘‘ Drypta coelestina Kl. ’’; 1 male (ZMHU), ‘‘Deli, auf Sumatra, Hartert’’; 1 female (ZMHU), ‘‘Ober-Langkat, Deli, Sumatra, 1894, M. Ude S.’’/‘‘93278’’. Japan: 1 male (ISNB), ‘‘Japon’’/‘‘Collect Balls’’/‘‘Japan’’/‘‘Collection E. Rousseau’’/‘‘Coll. R. I. Sc. N. B. Japon’’; 1 female (ISNB), ‘‘Japon’’/‘‘Collect Balls’’/‘‘Japan’’/‘‘Coll. R. I. Sc. N. B. Japon’’. Pakistan: 1 female (CAS), ‘‘E. Pakistan, Ichamati, 28 mi E. Chittagong, IX-14-61, 50 ft’’, Collection E. S. Ross, D. Q. Cavagnaro’’; 1 male (ZMHU), ‘‘Süd borneo, Bandjermasin, L. W. Schaufuss G.’’. Thailand: 1 female (ISNB), ‘‘Coll. I. R. Sc. N. B. Thailand (Ioei), Na-Haeo (Field res. stat.), 15- 19.V.2003, light trap, leg. J. Constant, K. Smets & P. Grootaert’’; 1 male (MBC), ‘‘Thai, 13.5.1993, 19.29N, 98.18E, Soppong, 750 m, L. Bocák lgt.’’; 2 females (MBC), ‘‘Thai, 13.5.1993, 19.29N, 98.18E, Soppong, 750 m, Vit Kubáň leg.’’.

Description. Length 10.2–11.2 mm, width 2.7–3.0 mm. Black with green luster; Ant 1 with apical fourth blackish brown, basal three fourths yellow; femora yellow, with apical sixth black; tibiae yellow. Head slightly wider than pronotum, HW/PW 5 1.19 (1.12–1.24); labrum with medial lobe strongly protruded anteriorly ( Fig. 30 ); Ant 1/Ant 3 5 2.62 (2.50–2.67); genae slightly tumid, eyes large, about 2.3 times as long as genae. Pronotum widest at the middle, slightly narrowed anteriorly, PL/PW 5 1.58 (1.45–1.67). Elytra long, lateral margins nearly parallel in both sexes; outer angles slightly dentate, EW/PW 5 2.21 (2.03–2.31), EL/EW 5 1.99 (1.93–2.05). Protarsomere 3 slightly asymmetrical in male; tarsal claws with 3 or 4 pectinations, length of the longest pectination less than half width of claw base ( Fig. 67 ). Aedeagus with apical lamella thin, triangular ( Figs. 73–74 ).

Distribution. China, India, Indonesia (Java, Sumatra, Kalimantan), Japan, Laos, Pakistan, Thailand.

Remarks. We have not examined the type. Members of this species are readily recognized by the strongly protruded medial lobe of the labrum, which is unique in the genus. Dendrocellus confusus is widely distributed in southeastern Asia from Japan and China to Java. Hansen (1967: 406) stated that adults of this species were similar to those of D. geniculatus (Klug) in having short tarsal claw pectinations. However, he wrongly characterized D. geniculatus (Klug) (see remarks under D. geniculatus ). Actually, adults of this species are similar to those of D. coelestinus (Klug) in having short claw pectinations, but different from the latter in having a longer medial lobe of the labrum and smaller ratio of Ant 1/Ant 3.

Figures

Figs. 1–12. Habitus of Dendrocellus species. 1) D. australis (male, Congo); 2) D. coelestinus (syntype); 3) D. coelestinus (type of D. paralellus); 4) D. confusus (male, Thailand); 5) D. crassus (male, Borneo); 6) D. elegans (male, New Guinea); 7) D. rugicollis (lectotype); 8) D. geniculatus (holotype); 9) D. geniculatus (holotype of D. gilsoni); 10) D. gestroi (lectotype); 11) D. inexpectus (holotype); 12) D. javanus (holotype). Scale line 5 2.0 mm.

Figs. 25–30. Labrum of Dendrocellus species. 25) D. australis (male, Congo); 26) D. geniculatus (male, Tibet); 27) D. sinicus (holotype); 28) D. coelestinus (syntype); 29) D. rugicollis (lectotype, India); 30) D. confusus (male, Thailand). Scale line 5 0.5 mm.

Figs. 57–72. Tarsal claws of hind tarsi of Dendrocellus species and Drypta species. 57) D. rugicollis (lectotype); 58) D. elegans (male, New Guinea); 59) D. schultzei (lectotype); 60) D. sinicus (holotype); 61) D. inexpectus (holotype); 62) D. javanus (male, Java Occid., paratype); 63) D. nigripennis (holotype); 64) D. geniculatus (male, Tibet); 65) D. australis (male, Congo); 66) D. queenslandicus (holotype); 67) D. confusus (male, Thailand); 68) D. nepalensis (male, Pedong, India); 69) D. coelestinus (syntype); 70) D. micropectinatus (male paratype, Congo); 71) Drypta longicollis Macleay 1825 (male, Thailand); 72) Drypta lineola virgata Chaudoir 1850 (male, Vietnam). Scale line 5 0.1 mm.

Figs. 73–90. Male genitalia of Dendrocellus species. 73) and 74) D. confusus (Thailand); 75) and 76) D. rugicollis (lectotype); 77) and 78) D. coelestinus (Thailand); 79) and 80) D. nepalensis (Pedong, India); 81) and 82) D. kulti (Hubei, China); 83) and 84) D. crassus (Borneo); 85) and 86) D. nigripennis (holotype); 87) and 88) D. geniculatus (Pedong, India); 89) and 90) D. javanus (holotype). Scale lines 5 1.0 mm, scale line A for Figs. 73, 75, 77, 79, 81, 83, 85, 87, 89 (apical part, dorsal view); scale line B for Figs. 74, 76, 78, 80, 82, 84, 86, 88, 90 (left lateral view).