Bot. Bull. Acad. Sin. (2004) 45: 165-170

Terada et al. — Carabidicolous Laboulbeniales of Taiwan II

Notes on the carabidicolous Laboulbeniales (Ascomycetes) of Taiwan II

Katsuyuki Terada*, Meng-Hao Hsu, and Wen-Jer Wu

Department of Entomology, National Taiwan University, No. 1, Roosevelt Road, Section 4, Taipei 106, Taiwan

(Received April 14, 2003; Accepted September 10, 2003)

Abstract. Twenty species in eight genera of the Carabidae are identified and recorded as new hosts for thirteen known species of the Taiwanese Laboulbeniales. Some observational data with photographs are given for Laboulbenia egens and L. olivacea.

Keywords: Carabidae; Dixomyces; Enarthromyces; Laboulbenia; Laboulbeniales; New hosts; Taiwan.

The following list is continued from Part I of this series (Terada et al., 2004), dealing with Dixomyces, Enarthromyces and Laboublenia. Eight genera and twenty species of the carabid beetles are added to the host-records for these Taiwanese Laboulbeniales.

List of Species

Dixomyces stomonaxi (Thaxter) I.I. Tavares, Mycologia Memoir 9: 208. 1985.—Type: R. Thaxter-593, on Caelostomus sp., China.

Basionym: Misgomyces stomonaxi Thaxter, Proc. Amer. Acad. Arts Sci. 35: 443. 1900. The host insect was erroneously listed as Stomonaxus striaticollis Dejean.

Specimens examined. On Caelostomus picipes MacLeay [Pterostichini]: Fushan, Taipei County, Jun. 5 1996, leg. S.H. Hsu, NTU-40; Wulai, Taipei County, Jun. 14 1994, leg. H.R. Wu, NTU-41.

Note. Taiwanese specimens were found on several parts of the body of Caelostomus picipes. Caelostomus sp. recorded from Taiwan by Juan and Chien (1996) seems also to be C. picipes. Two different forms of this fungus species were illustrated by Terada (1998, figs. 1-2).

Enarthromyces indicus Thaxter, Mem. Amer. Acad. Arts Sci. 12: 276. 1896.—Type: On Pheropsophus marginalis Schmidt-Goebel, India.

Specimens examined. On Pheropsophus occipitalis (MacLeay) [Brachinini]: Tahu, Taipei City, May 20 2001, leg. K. Terada, K. Terada-1596.

Other hosts in Taiwan. Pheropsophus javanus (Dejean) (Juan and Chien, 1994).

Note. Taiwanese specimens were found on the inferior part of the mesothorax of Pheropsophus occipitalis. This carabid is very abundant in Taiwan and is often found with P. javanus in wet and grassy places.

Laboulbenia egens Spegazzini, Anales Soc. Cient. Argent. 85: 325. 1918.—Type: On Tachys sp., Italy.

Laboulbenia paupercula Spegazzini, Anales Mus. Nac. Hist. Nat. Buenos Aires 27: 59. 1915 (nom. praeoc.; non L. paupercula Thaxter, Proc. Amer. Acad. Arts Sci. 25: 269. 1891). (Figures 1-7)

Specimens examined. On Tachys (Tachyura) fumicatus Motschulsky [Bembidiini]: Nan-ao, Ilan County, Feb. 13 2002, leg. K. Terada, K. Terada-1591; Yangmei, Taoyuan County, Aug. 22 2001 & Jun. 19 2001, leg. K. Terada & M.H. Hsu, K. Terada-1590 & -1601. On Tachys (Tachylopha) ovatus Motschulsky [Bembidiini]: Fulung, Taipei County, Oct. 1 2001, leg. K. Terada, K. Terada-1529; Sanchih, Taipei County, May 26 2001, leg. K. Terada, K. Terada-1566; Wanluan, Pintung County, Nov. 11 2001, leg. K. Terada & M.H. Hsu, K. Terada-1602.

Other hosts in Taiwan. Tachys (Tachyura) klugi Nietner (Sugiyama, 1978).

Note. Following the taxonomic treatment by Huldén (1985) who was the first to redescribe Laboulbenia egens on European Tachys, Majewski (1988) corrected all of the records of L. tachyis from Asia including a report from Taiwan (Sugiyama, 1978). Laboulbenia egens is characterized by the pyramidal perithecium with a blunt septal swelling and a basal bulge (sometimes these swellings are completely lacking), the receptacle with cell IV and V equal in height, the outer appendage with black edge above the protrusive basal cell (see Figure 1); the apical black zone of the perithecium is usually very vague. Taiwanese specimens were collected from several positions on the host body. Slender thalli of about 490 µm height occur on the elytral base and short thalli of about 160 µm height are on the mouthparts. The slender thalli (Figures 1-2) have a long cell II with a slight constriction at the upper end and

*Corresponding author. Present address: Omiya 1-2-20-203, Nishi-Ku, Hiroshima 733-0007, Japan. Tel: 0822388205; E-mail: terada@hjs.ed.jp

Botanical Bulletin of Academia Sinica, Vol. 45, 2004

Figures 1-7. Laboulbenia egens. (1) mature thallus removed from the elytra of Tachys ovatus. Left arrow (upper) indicates a septal swelling of the perithecium. Right arrow indicates a blackish edge that separates the whole lower portion of the outer appendage from the basal cell. The upper end of cell II is slightly constricted (left arrow, lower). K. Terada-1602; (2) mature thallus removed from the elytral base of Tachys fumicatus. Arrow indicates a septal swelling of the perithecium. K. Terada-1601; (3) mature thallus removed from the mouthparts of T. ovatus. No septal swelling is formed along the outer margin of the perithecium. K. Terada-1529; (4) mature thallus removed from the head (near eyes) of T. fumicatus. No septal swelling is formed along the outer margin of the perithecium. Second tier of perithecial wall cells is conspicuously dark in color. The upper end of cell II is broadened (arrow). K. Terada-1591; (5) submature thallus removed from T. ovatus. Left arrow indicates a blunt protrusion of the basal cell of the outer appendage. One of the perithecial basal cells projects outward (right arrow). K. Terada-1602; (6) mature thallus (same as Figure 2). The perithecial swelling and protrusive basal cell of the outer appendage are conspicuous. K. Terada-1601; (7) young thallus removed from the elytra of T. fumicatus. The outer side of the young perithecium is angulate (arrow). K. Terada-1591. Scale bars: 1-4 = 100 µm; 5-7 = 50 µm.

Terada et al. — Carabidicolous Laboulbeniales of Taiwan II

a septal swelling on the perithecial wall while in the short thalli (Figures 3-4) the upper end of cell II is broadened, and no perithecial swelling is formed. Perithecium size differs considerably; in the slender thalli, it is 95-120 × 20-25 µm, and in the short thalli, it is 148-153 × 43-58 µm. Thallus color seems to vary according to host species or position of growth of the fungus. Thalli on the elytral base of Tachys ovatus (Figure 1) are very pale yellow throughout, but thalli on the mouthparts of the same host species (Figure 3) are dull yellowish brown. Thalli on the elytral base of Tachys fumicatus (Figure 2) are mostly dark-colored, but subhyaline in the upper part of cell II and in the whole of cell I. However, thalli on the head of the same host species (Figure 4) have a bicolored perithecium (middle tier of wall cells is dark gray with brownish tinge and other tiers are subhyaline). Figure 1 shows a peculiar cell II with uneven margin on the anterior lateral side while in Figures 3-4, such undulations are not formed on cell II.

Laboulbenia olivacea Thaxter, Proc. Amer. Acad. Arts Sci. 41: 315. 1905.—Type: R. Thaxter-1396, on Lebia sp., Java. (Figures 8-11)

Specimens examined. On Colpodes limbatus Jedlièka [Platynini]: Manyueyen, Taoyuan County, Jun. 22 2001, leg. K. Terada, K. Terada-1583.

Note. Laboulbenia olivacea is characterized by a subcylindrical perithecium with dark-colored apical and basal portions, and with a pale-colored middle portion; the outer appendage with two blackish septa; and the receptacle with cell IV divided into two superposed cells (Figures 8 and 11). Taiwanese specimens have broader perithecia and receptacles than Thaxter indicates; his figure shows a more slender specimen (Thaxter, 1908, pl. LV, fig. 3). Thaxter described the color of the perithecium as "olivaceous brown, paler and subhyaline distally on the inner side" while in the Taiwanese specimens, the perithecium is yellowish at first and then becomes dark yellowish brown, except for the blackish brown apical and basal parts; the receptacle is yellowish brown except for the subhyaline cell I, often suffused with blackish brown and covered with small black spots. Division in cell IV is complete before perithecium matures (Figure 11, v-line), but in very young thalli, only one IV cell is present (Figure 10, arrow). Almost all septa of the outer and inner append

Figures 8-11. Laboulbenia olivacea removed from the elytral margins, apical sternites, and legs (tarsi and tibiae) of Colpodes limbatus. K. Terada-1583. (8) mature thallus. Arrow indicates a later-formed septum in cell IV. Middle portion of perithecium is paler than basal and apical portions; (9) mature thallus; (10) very young thallus. Cell IV is not divided yet (arrow). Two black septa are clearly visible in the outer appendage; (11) young thallus with divided cell IV (v-line). Arrow indicates a later-formed branch of the outer appendage arising from the outer side of the cell between the two black septa (arrow). Scale bars: 8, 10 & 11 = 50 µm; 9 = 100 µm.

Botanical Bulletin of Academia Sinica, Vol. 45, 2004

ages are colorless, but only two septa near the base of the outer appendage are blackened (Figures 10-11). The upper blackish septum is located on the inner side because a later-formed branch is always located on the outer side (Figure 11, arrow). The Taiwanese specimens were found on the elytral margins, the apical abdominal sternites, and more frequently on the legs (tibiae and tarsi) of the hosts. Juan and Chien (1996) recorded this fungus species on Colpodes sp. from Taiwan, but the host species was not determined and unfortunately has been lost (Chien, personal communication).

Laboulbenia anoplogenii Thaxter, Proc. Amer. Acad. Arts Sci. 35: 156. 1899.—Type: R. Thaxter-665, on Anoplogenius cyanescens (Hope), China.

Specimens examined. On Anoplogenius cyanescens (Hope) [Harpalini]: Yangmei, Taoyuan County, Jul. 28 2001, leg. K. Terada & M.H. Hsu, K. Terada-1587.

Other hosts in Taiwan. Anoplogenius philippinus Jedlièka (Sugiyama and Shazawa, 1977).

Note. Terada (2001) fully discussed and illustrated this fungus species. A record of a Taiwanese host, Colpodes sp. (Juan and Chien, 1995), is probably erroneous.

Laboulbenia stenolophi Spegazzini, Redia 10: 65, 1914.— Type: On Stenolophus teutonus (Schrank), Italy.

Specimens examined. On Stenolophus (Egadroma) smaragdulus (Fabricius) [Harpalini]: Nan-ao, Ilan County, Mar. 2 2002, leg. K. Terada, K. Terada-1585.

Other hosts in Taiwan. Stenolophus (Egadroma) quinquepustulatus (Wiedemann) (Terada, 1976).

Note. Terada (2001) discussed and fully illustrated this fungus species. The unidentified Taiwanese host, Stenolophus sp. (Juan and Chien, 1995), might be S. quinquepustulatus because this carabid species is quite common among the Taiwanese Harpalini.

Laboulbenia fasciculata Peyritsch, Sitzungsber. Kaiserl. Akad. Wiss., Math.-Naturwiss. Cl. Abt. 1 (Wien) 68: 248. 1873.—Type: On Chlaenius (Chlaeniellus) vestitus (Paykull), Europe.

Specimens examined. On Chlaenius alesi Jedlièka [Callistini]: Nan-ao, Ilan County, Feb. 13 2002, leg. K. Terada, K. Terada-1562. On Chlaenius inops Chaudoir [Callistini]: Nan-ao, Ilan County, Mar. 4 2002, leg. K. Terada & M.H. Hsu, K. Terada-1553.

Note. Taiwanese specimens were collected from two species of Chlaenius, mainly on elytra. The occurrence of this fungus in Taiwan on Pheropsophus javanus (Juan and Chien, 1996) seems to be a mere accident or erroneous. The unidentified Taiwanese host, Chlaenius sp. (Juan and Chien, 1996), may be C. inops because this carabid is abundant in Taiwan.

Laboulbenia proliferans Thaxter, Proc. Amer. Acad. Arts Sci. 28: 168. 1893.—Type: Not designated. Thaxter

(1893) listed three host species: Craspedophorus tropicus (Hope), Sierra Leone, Chlaenius auricollis Gory, Syria, and Dolichus? sp., Japan.

Specimens examined. On Chlaenius (Hololeius) ceylanicus Nietner: Nan-ao, Ilan County, Mar. 8 2002, leg. K. Terada, K. Terada-1552. On Chlaenius circumdatus Brullé: Yangmei, Taoyuan County, Aug. 14 2001, leg. K. Terada & M.H. Hsu, K. Terada-1528. On Chlaenius (Haplochlaenius) costiger Chaudoir: Fulung, Taipei County, Oct. 1 2001, leg. K. Terada, K. Terada-1589. On Chlaenius formosanus Jedlièka: no data, K. Terada-1564. On Chlaenius hamifer Chaudoir: Tahu, Taipei City, May 30 2001, leg. K. Terada, K. Terada-1584. On Chlaenius luzonicus oricus Jedlièka: Fulung, Taipei County, Oct. 1 2001, leg. K. Terada, K. Terada-1588. On Chlaenius monogramus Laferté: Tahu, Taipei City, May 20 2001, leg. K. Terada, K. Terada-1594. On Chlaenius praefectus Bates: Yangmei, Taoyuan County, Aug. 14 2001, leg. Y.L. Yang & M.H. Hsu, K. Terada-1522. On Chlaenius sericimicans Chaudoir: Yangmei, Taoyuan County, Oct. 8 2001, leg. K. Terada & M.H. Hsu, K. Terada-1597. On Chlaenius tetragonoderus Chaudoir: Sanchih, Taipei County, Jun. 29 2001, leg. K. Terada, Y.L.Yang & M.H. Hsu, K. Terada-1526. All hosts belong to the tribe Callistini.

Other hosts in Taiwan. Two species of Chlaenius were recorded by Terada (1976), of which C. bioculatus Motschulsky was later corrected as C. lynx Chaudoir (see Terada, 1978, p. 64), and Chlaenius sp. from Orchid Island, Taitung County (K. Terada-260) was later identified as C. flaviguttatus MacLeay (see Terada, 1995, p. 296).

Note. Ten species of Chlaenius are added to the host range of Laboulbenia proliferans. Chlaenius sp. as a host of this fungus species from Taiwan (Juan and Chien, 1995) is of uncertain identity, but unfortunately the host specimen has been lost (Chien, personal communication).

Laboulbenia torta K. Sugiyama, Trans. Mycol. Soc. Japan 20: 145. 1979.—Type: K. Sugiyama-2019, on Chlaenius (Haplochlaenius) costiger Chaudoir, Japan.

Specimens examined. On Chlaenius (Haplochlaenius) costiger Chaudoir [Callistini]: Fulung, Taipei County, Oct. 1 2001, leg. K. Terada, K. Terada-1589.

Note. Taiwanese specimens were collected from the elytra of Chlaenius costiger, on which the thalli of Laboulbenia proliferans were also found. Juan and Chien (1996) recorded this fungus from Chlaenius (Haplochlaenius) sp., but host identification was uncertain, and unfortunately the host specimen has been lost (Chien, personal communication).

Laboulbenia balazucii W. Rossi var. exilis Terada, Mycoscience 36: 307. 1995.—Type: K. Terada-1219, on Chlaenius circumdatus Brullé, Japan.

Specimens examined. On Chlaenius circumdatus Brullé [Callistini]: Yangmei, Taoyuan County, Aug. 22 2001, leg. K. Terada & M.H. Hsu, K. Terada-1595.

Terada et al. — Carabidicolous Laboulbeniales of Taiwan II

Note. Chlaenius (Epomis) sp., recorded as a host from Taiwan by Juan and Chien (1996), was not identified to species, but unfortunately the host specimen has been lost (Chien, personal communication). For the Epomis group of Chlaenius, only one species is known in Taiwan. It is Chlaenius (E.) nigricans Wiedemann, widely distributed in Southeast Asia. Therefore, Juan and Chien's host might be C. nigricans. In Japan, however, this carabid species is known to be parasitized by Laboulbenia torta (Terada, 1995).

Laboulbenia pheropsophi Thaxter, Proc. Amer. Acad. Arts Sci. 28: 170. 1893.—Type: Not designated. Thaxter (1893) listed two species of Pheropsophus as hosts: P. aequinoctialis (L.), South America, and P. marginatus Dejean var. ?, Zanzibar.

Specimens examined. On Pheropsophus occipitalis (MacLeay) [Brachinini]: Tahu, Taipei City, May 20 2001, leg. K. Terada, K. Terada-1596.

Other hosts in Taiwan. Pheropsophus beckeri Jedlièka (Sugiyama and Shazawa, 1977; Terada, 1978); Pheropsophus javanus (Dejean) (Juan and Chien, 1995).

Note. Taiwanese specimens were obtained from various parts of Pheropsophus occipitalis. Sometimes this carabid species is also parasitized by Enarthromyces indicus.

Laboulbenia orientalis Thaxter, Proc. Amer. Acad. Arts Sci. 35: 191. 1899.—Type: Not designated. Thaxter (1899) listed as hosts two species of Brachinus from China and Philippines: B. chinensis Chaudoir and Brachinus sp.

Specimens examined. On Brachinus scotomedes Redtenbacher [Brachinini]: Wulai, Taipei County, May 4 1997, leg. F.Y. Su, NTU-2.

Note. Laboulbenia orientalis on Brachinus scotomedes presents strong variability in form (Terada, 1991). Brachinus sp. recorded as a Taiwanese host of this fungus (Juan and Chien, 1995) might be B. scotomedes, but the host specimen has been lost (Chien, personal communication).

Laboulbenia rougetii Montagne et Robin, In C.P. Robin, Hist. Nat. Veg. Paras. J.-B. Baillière, Paris. p. 622. 1853.— Type: Not designated. Robin (1853) listed three species of Brachinus as host: B. crepitans (Linnaeus), B. explodens Duftschmid and B. sclopetae (Fabricius), Europe.

Specimens examined. On Brachinus scotomedes Redtenbacher [Brachinini]: Wulai, Taipei County, May 4 1997, leg. F.Y. Su, NTU-2; Chialeshui, Pintung County, May 8 1992, leg. W.I. Chou, NTU-1.

Note. Thaxter (1908) described two varieties of Laboulbenia rougetii: var. chinensis and var. japanensis. Each variety has its own host species. Moreover, variation caused by positional preference on a host body may also occur (Terada, 1991). Laboulbenia rougetii and L.

orientalis are often found together on a single body of B. scotomedes. Juan and Chien (1995) recorded these two species of fungi on Brachinus sp. from Taiwan. This undetermined host specimen has been lost (Chien, personal communication).

Acknowledgments. The authors thank Dr. I.I. Tavares, University of California, Berkeley, for her critical reading of the manuscript and comments. The authors also thank Miss Y.L. Yang for collecting insects and Prof. C.Y. Chien for checking his own materials.

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