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Russian Entomol. J. 14(4): 281-282

ї RUSSIAN ENTOMOLOGICAL JOURNAL, 2005

Isoclerus succedaneus sp. n. - a new species of the Thanerocleridae (Coleoptera) from Southern India Isoclerus succedaneus sp. n. -- новый вид Thanerocleridae (Coleoptera) из Южной Индии I.V. Melnik И.В. Мельник
General Glagolev str., 6/1, ap.50, Moscow 123448, Russia. . , . 6/1, . 50, 123448, .

KEYWORDS: new species, India, Thanerocleridae, Coleoptera. : , , Thanerocleridae, Coleoptera. ABSTRACT. Isoclerus (Isoclerus) succedaneus sp.n. is described on the specimens, collected into Tamil Nadu (Southern India). It's close related to Isoclerus tuberculatus (Schenkling, 1906) from Ceylon Isl., but well distinguished by elytral pattern. These both species form a vicariant pair. . ( ) Isoclerus (Isoclerus) succedaneus sp.n., Isoclerus tuberculatus (Schenkling, 1906) - , . . Nominative subgenus Isoclerus Lewis, 1939 consists of 9 species [Kolibб , 1992, 1998], 6 of them are distributed in Eastern Asia, from Japan to Ceylon and 3 are known from Australia only. During the study of materials collected in southern India (Tamil Nadu) by S. Saluk, two specimens of a new Isoclerus were found. Description of a new species is given in this paper. Isoclerus (Isoclerus) succedaneus Melnik, sp.n. Figs 1-7.
MATERIAL. Holotype: #, South India, West Ghats, Tamil Nad u, 35 k m SW Kodaikan al , h~2 06 0 m, Kukal Shola, N10њ16'23" E77њ21'55", in moss on the stem of tree, 30.XI.2003 leg. S.Saluk; Paratypes: 1 # 2 $$, same labeled as holotype. Holotype is kept in collection of Zoological Institute of Russian Academy of Science (St.-Petersburg), paratypes are kept in author's and S. Saluk (Minsk) collections.

DESCRIPTION. Holotype (Fig. 1). Total body length -- 2.8 mm. Head large, longer than width, with parallel elongated tempora; strongly punctuated dorsally, punctation closely connected in anterior part of frons and forms longitudinal rugulae. Eyes overflowing the head'contour, black pigmented with large phacetes. Antenna 11-segmented, with distinct 3segmented club. Maxillary and labial palps, antennomeres and legs yellowish-brown, except slightly darkened tibial base. P r o n o t um e l o n g a t e d , s c y p h i f o r me d , e q u a l l y n a r r o wed

posteriorly; with equal rugged punctuation, one weak oviform longitudinal emargination on disk, and two indistinct rounded lateral pits. Scutellum bicolored, chestnut-brown with broad black border. Elytra oviform, with obtusely rounded humeri; heavily punctuated except narrow humeral areas, punctuation became weaker in apical third, especially in band area. Body chestnut-brown, frons and lateral parts of pronotum slightly darkened. Elytra yellowish-brown, with developed black pattern, light lateral margin, anteriorly dilated sutural stripe and three incomplete bands (Fig. 5). Anterior humeral band broken by dark pattern to two spots, mid-band fused with external lateral margin in front of the middle of elytron, directed posterial and reaching half of the elytron'width; broadest posterior band, beginning from apical third and directed anterial. Body wholly covered by heterogeneous pubescence, consisting of thinner and brighter, inclined or half-adherened hairs and thicker, darker erected setae. On inner part of bands and in humeral areas inclined hairs more brighten, seemed almost white. The difference in hairs' pigmentation can be seen better in native (wet) beetles or in diffused light. Male genitalia as in Fig. 4. Paratypes: Total body length -- 3.1 (#), 3.8 ($) mm. In one paratype (#) inner parts of anterior and mid-bands merged and dark pattern presented by three pairs of isolated spots (Figs 2, 6), in females hind band reach of sutural strip and fully separate dark apical spot (Fig. 7). DIAGNOSIS. Tarsal formula 5-4-4 and structure of antenna is an unambiguent evidence of belonging a new species to genus Isoclerus. Large eyes and bicolored elytron give us a reason to consider it a nominative subgenus. Within it I. succedaneus sp. n. is closeness to I. tuberculatus (Schenkling, 1906) from Ceylon by shape of pronotum and character of setation. However I. succedaneus sp. n. easily recognized from I. tuberculatus by strongly developed elytral pattern and position of bright hairs on posterior band. These two species are undoubtly vicariant, their areals are separated by Palk stait.The further research can possibly change the rank of this taxon. ETYMOLOGY. Specific epithet succedaneus (from Latin -- "substitute") reflects the vicariant character of new species distributed area in comparison with I. tuberculatus. ACKNOWLEDGEMENT. I am very grateful to Mr. Artem Zaitsev for translation of text from Russian into English.


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4 1

5

6

7

2

3

Figs 1-7. Isoclerus succedaneus sp.n.: 1-3 -- habitus (1-2 -- dorsal view, 3 -- ventral view); 4 -- male's genitalia; 5-7 -- elytral pattern; 1, 4-5 -- holotype; 2-3, 6-7 -- paratypes; 1-6 -- #; 7 -- $. Рис. 1-7. Isoclerus succedaneus sp.n.: 1-3 -- внешний вид (1-2 -- сверху, 3 -- снизу); 4 -- строение гениталий самца; 5-7 -- схема рисунка надкрылий; 1, 4-5 -- голотип; 2-3, 6-7 -- паратипы; 1-6 -- #; 7 -- $.

References
Corporaal J.B. 1939 (1938). Revision of the (Cleridae, Col.) // Bijdr. Dierk. Vol.27. Kolibб J. 1992. Revision of Thanerocleri leoptera, Cleroidea) // Mitt. Schweiz. Ent S. 3 0 3 -3 4 0. Thaneroclerinae P.347-363. dae n.stat. (Coomol. Ges. Bd.65.

Kolibб J. 1998. New Australian Thanerocleridae, with notes on the subtribe Isoclerina Koliba (Coleoptera, Cleroidea) // Invert. Taxon. Vol.12. No.6. P.951-975. Schenkling S. 1906. Die Cleridae des Deutschen Entomologischen National-Museums, nebs Beschreibungen neuer Arten // Deutsch. Ent. Zetschr. Bd.50. Hf.1. S.241-320.