Russian Entomol. J. 16(3): 281–295 © RUSSIAN ENTOMOLOGICAL JOURNAL, 2007 Revision of the genus Intestinarius gen.n. from Southeast Asia, with notes on a probable autapomorphy of Batrisitae (Coleoptera: Staphylinidae: Pselaphinae) Ðåâèçèÿ ðîäà Intestinarius gen.n. èç Þãî-Âîñòî÷íîé Àçèè ñ çàìåòêàìè î âîçìîæíîé àóòàïîìîðôèè Batrisitae (Coleoptera: Staphylinidae: Pselaphinae) S.A. Kurbatov Ñ.À. Êóðáàòîâ All-Russian Center of Plant Quarantine, Moscow reg., Bykovo. E-mail: [email protected] Всероссийский центр карантина растений, Московская обл., пос. Быково KEY WORDS. Coleoptera, Staphylinidae, Pselaphinae, Batrisitae, Intestinarius, South-East Asia, autapomor- phy, labrum КЛЮЧЕВЫЕ СЛОВА. Coleoptera, Staphylinidae, Pselaphinae, Batrisitae, Intestinarius, Юго-Восточная Азия, аутапоморфия, верхняя губа ABSTRACT. The new genus Intestinarius is de- and, from 1994 on, collected this and several other scribed. The genus includes the type species I. quin- species, closely related in several regions of Southeast quesulcatus (Raffr.) (Malaysia, Singapore) and seven Asia. This provided the opportunity to re-describe Raf- new species: distorticeps sp.n. (Jawa), kuzmini sp.n. fray’s species and describe a new genus and several (Yunnan), orthopygium sp.n. (Laos), crassicornis sp.n. new species. (Laos), ingeniosus sp.n. (Sarawak), pexatus sp.n. (Sa- In addition, in the course of studying the new ge- rawak), diatretus sp.n. (Sarawak). Key to species of the nus, the author noticed a character that is most probab- genus is provided. The character that is most probably ly characteristic only of the supertribe Batrisitae and, the first known autapomorphy of Batrisitae is found thus, may prove the first known autapomorphy of the and discussed. tribe. This possibility is confirmed by the results of the studies of this character in a considerable number of РЕЗЮМЕ. В статье приведено описание нового species from all the supertribes of Pselaphinae. рода Intestinarius с типовым видом I. quinquesulcatus Abbreviations used in the present work are: (Raffr.) (Малайзия, Сингапур) и с 7-ю новыми вида- MNHN — Muséum national d’histoire naturelle, Paris ми: distorticeps sp.n. (Ява), kuzmini sp.n. (Юннань), PCSK — Private collection of S. A. Kurbatov, Mos- orthopygium sp.n. (Лаос), crassicornis sp.n. (Лаос), cow ingeniosus sp.n. (Саравак), pexatus sp.n. (Саравак), ZMUM — Zoological Museum, University of Mos- diatretus sp.n. (Саравак). Дана определительная таб- cow, Moscow лица видов рода. Обсуждается признак, который по The abdominal tergites and sternites are numbered всей видимости является первой выявленной аут- according to Chandler [2001] in arabic (visible position) апоморфией Batrisitae. and roman (morphological position). The abdominal seg- ments are counted from tergite 1 (IV) and sternite 1 (III). The Oriental region is extremely rich in members of the supertribe Batrisitae; these members are very diverse. Intestinarius Kurbatov, gen. n. In 1894, Raffray described a peculiar species from Type species: Batrisodes quinquesulcatus Raffray, 1894. Singapore, Batrisus quinquesulcatus. Later [Raffray, Gender masculine. 1904] he placed it in the genus Batrisodes. Actually, DESCRIPTION. Anterior half of head’s dorsal sur- this species considerably differs from the true Batri- face forming more or less rectangulary protruding fron- sodes in a number of characters and belongs, without a tal lobe. Frontal lobe medially with distinct impression, doubt, to a separate genus. Nomura & Idris [2003] and posterior margin of which usually angulate. Antennal Nomura [2005] also reported this species in the course tubercles well-marked. Frontal lobe laterally, immediate- of their faunistic studies of the Pselaphinae of Malaysia ly behind antennal tubercles, with distinct incision; this and treated it as belonging to Gen. indet. 1. incision with posterior margin denticle-shaped. Tento- The author of this work studied the type material of rial foveae strongly displaced backwards, situated near B. quinquesulcatus preserved in the Paris Museum gular constriction, with vertexal sulcus beginning in 282 S.A. Kurbatov each fovea and directed anteriorly; vertexal sulci not lability of characters, prone to frequent reductions, re- confluent anteriorly. Area of vertex between sulci usu- versions, and to parallel development. Under such con- ally more or less raised. Head often with narrow longitu- ditions, all our opinions of the phylogenetic relations of dinal carina on lateral margin, lateral of vertexal sulcus. the new genus may appear more or less subjective. We Long occipital carina present, reaching posterior mar- believe, notwithstanding, that the genus Intestinarius gin of frontal impression. Eyes well-developed, situa- is the closest to the genus Mnia, because of the follow- ted at middle of head’s length. Temples long, narrowed ing characters: (1) anterior half of head forming rectan- posteriorly, with lateral margin almost straight, longer gularly protruding frontal lobe with more or less parallel than eyes in lateral view. Ventral portion of temples sides, and antennal base separated from anterior mar- pubescent, with very long erect hairs. Anterior angles gin of eye (possible synapomorphy of these two gen- of labrum strongly angulately protruding anteriorly. era); (2) median portion of sternite 1 of peculiar shape Segment 4 of maxillary palpus dorsally with group of and strongly protruding downwards (Figs 7–8). In addi- several recumbent setae. Antennae elongate, with each tion, the apical portion of the aedeagus of males of the segment longer than wide, segment 7 and, to smaller new genus has numerous long setae. Males of many degree, segment 5 always slightly wider than each of species of the genus Mnia have similar apex of the both adjacent segments. Antennal club 3-segmented, aedeagus, e.g., M. elegans Raffr., M. eucera Löbl, M. indistinct. gracilis Löbl, M. mutator Löbl [see Löbl, 1973, Abb. 24, Pronotum dorsally with five longitudinal sulci con- 25, 43–46, 63, 64], and some others, whereas in the rest joined basally by transverse antebasal sulcus; bases of of Mnia species the number of such setae is very small exterior sulci confluent with lateral pronotal foveae; me- and the setae are sometimes shortened. It should also dial longitudinal sulcus posteriorly slightly reaching bey- be noted that the profemora are distinctly thickened in ond antebasal sulcus. Additional longitudinal sulcus both sexes in both these genera. Nevertheless, there present under lateral margin of pronotum. All seven sulci are some considerable differences. For instance, the disappearing somewhat behind anterior margin of prono- genus Mnia has such autapomorphies as the strongly tum. Base of pronotum with two pairs of basal foveae and elongated antennal segment 1 and the abdominal ster- pair of conical tubercles. Paranotal sutures absent. nite 2 with a deep and narrow incision laterally at the Elytral sculpture includes three basal foveae and base. Additionally, this genus has most of the pronotal fine complete sutural sulcus; discal sulcus, if present, structures reduced, namely: sulci (except the exterior), no longer than half of elytron. foveae (except the lateral), and conical tubercles, as Tergite 1 (IV) with two very short tubercle-like inte- well as all the sulci and foveae of the elytron. rior basal carinae and two long exterior carinae. Each Intestinarius quinquesulcatus (Raffray) interior carina with two small foveae at each side. Third, Figs 1–5, 18. exterior, fovea present at base of exterior carina. Tergite Batrisus quinquesulcatus Raffray, 1894: 241 1 several times longer than tergite 2 or 3 and conside- Batrisodes quinquesulcatus, Raffray, 1904: 90 rably longer than tergite 4. MATERIAL. Lectotype (designated here) #, provided with Prosternum with two procoxal foveae. Mesoster- four labels: (1) Singapore; (2) Muséum Paris 1917 coll. num with two median foveae and forked lateral foveae. A.Raffray; (3) TYPE [red]; (4) B. quinquesulcatus A.Raffray det. Mesocoxal cavities open. Metasternum with two lateral (MNHN). Paralectotype (designated here) $, provided with labels (1), (2), and (4) (MNHN). Additional material. 1 #: W mesocoxal and two metasternal foveae. Median pro- Malaysia, Fraser’s Hill, 1200 m, litter, 29.01.1999, leg. S. cess of posterior margin of metasternum with very small Kurbatov; 1 $: same locality, but 1000 m, 31.01.1999 (PCSK). incision medially. Metendostenite with longitudinal cari- DESCRIPTION. Body length 2.3–2.5 mm. Pubescence nate protrusion medially. of medium length (average length of elytral hairs 0.1 mm). Sternite 1 (III) medially strongly protruding down- Head (length 0.56–0.59, width with eyes 0.50–0.51 mm) wards (this protrusion being of peculiar shape and clearly more or less smooth, only with several microtubercles on visible only in detached abdomen). frontal impression and on temporal area. Frontal lobe width Profemora distinctly thickened, their interior margin 0.31–0.32 mm, its sides behind lateral denticle straight and slightly dilating until anterior margin of eyes. Vertex flattened with long carina and series of vertically protruding se- between vertexal sulci, protruding slightly. Vertexal sulci parallel tae, these setae gradually getting shorter from distal along most of their length and slightly diverging only anterior- end of femur to its middle (Fig. 9). ly, near frontal impression. Lateral carinae pronounced, long, Male secondary sexual characters usually localized on anteriorly almost reaching lateral incisions of frontal lobe. trochanters,