Coridromius chinensis Liu and Zhao, 1999

Tatarnic, N. J. & Cassis, G., 2008, Revision Of The Plant Bug Genus Coridromius Signoret (Insecta: Heteroptera: Miridae), Bulletin of the American Museum of Natural History 2008 (315), pp. 1-95 : 45-47

Coridromius chinensis Liu and Zhao Figures 1C–D, 4, 6, 7N–P, 9A, map 6

Coridromius chinensis Liu and Zhao, 1999: 56–58 .

Coridromius bufo Miyamoto and Yasunaga, 1999: 33–35 (junior synonym); Chérot et al., 2004: 63– 64 (synonymy).

DIAGNOSIS: Distinguished by the following combination of characters: bilobed proepisternum; swollen, rounded lobe at apex of scutellum; mottled coloration; AI with dark brown basal annulation; AII with dark brown annulation but lacking dark brown postmedial band; right paramere with sharp, triangular spicule; left paramere scythelike with gutter open its entire length. C. chinensis , confusus , minusculus , and punctatus are all very similar but can be distinguished from one another by minor variations in color pattern and slight differences in male genitalia and scutellar shape. The apex of the scutellum, while swollen in all four species, is much more so in chinensis than in the others. C. confusus is also easily distinguished from the others, as it is the only species where the left paramere is extremely thin and forms a completely enclosed tube, open only at the apex. C. minusculus also has a very thin left paramere, but it is open the entire length. C. confusus and minusculus also share identical antennal banding, with a pale yellow band dividing the dark brown annulation on AII, as well as similar hemelytral coloration, with the dark brown embolium marked with two broad yellow markings apically and basally. C. chinensis and punctatus , on the other hand, have thicker left parameres and lack a subapical dark brown annulation on AII. To separate chinensis from punctatus one can look at the coloration of AI: in the former it is pale with a dark brown band, while in the latter it is dark brown with yellow base and apex. Additionally, the ventral apical process on the posterior margin of the pygophore is long and thin in chinensis but shorter and thicker in punctatus .

REDESCRIPTION: COLORATION (figs. 1D, 4, 6): Head: Mottled light orange-brown and whitish yellow; frons with faint light orange-brown vittae, medial stripe pale; depressions on vertex and above antennae darkened; clypeus whitish yellow with two irregular dark brown stripes; mandibular and maxillary plates whitish yellow, becoming orange-brown along posterior margins; gena orange-brown; buccula whitish yellow, brown basally; labrum orange-brown, labium light orange-brown, darkened apically. Antenna: AI whitish yellow with dark brown annulation near base; AII light orange-brown with whitish-yellow subapical band followed by dark brown annulation; AIII and AIV dark brown with whitish-yellow bases. Thorax: Pronotal collar whitish-yellow; pronotum whitish yellow with mottled orangebrown punctures, with two small slightly darker orange-brown markings along anteri- or behind eyes, seldom darkened around callar region, sometimes with indistinct whitish-yellow medial stripe, sometimes with two indistinct, broad dark brown markings on pronotal disc, margins without distinct piping; mesoscutum orange-brown; scutellum whitish yellow with mottled orange-brown punctures, medial stripe and apex pale; thoracic pleura dark orange-brown, whitish yellow along caudal margins; proepisternal lobes whitish yellow. Hemelytra: Mostly orange-brown, sometimes with anterior portion of clavus slightly to distinctly darker, commissure pale; corium becoming paler at apex, sometimes with faint darker brown patches; embolium with faint whitish-yellow subbasal and apical markings; cuneus light orange-brown, pale at apex; membrane brown with whitish-yellow veins bounded by irregular darker brown markings. Legs: Mostly whitish yellow with brown markings; coxae whitish yellow; pro- and mesofemur with broad, subapical irregular brown markings, bothria whitish yellow; metafemur laterally with 6–7 irregular diagonal brown stripes basally, becoming blotchy and indistinct apically; irregular whitish-yellow patch anterodorsally; stripes fusing ventrally with large orange-brown patch, lateral depressions near apex orange-brown; all tibiae whitish yellow with irregular orange-brown markings; metatibial spines dark brown. Abdomen: Light orange-brown, posterior margin of sternite II dark orange-brown. SURFACE AND VESTITURE (figs. 4, 6): Irregular swellings on head with deep, somewhat coalescing punctures; pronotum and propleuron deeply and irregularly punctate; scutellum deeply and irregularly rugulopunctate, impunctate along midline; metepimeron and hemelytra impunctate; metafemur with a few punctures distodorsally; head and dorsum clothed in long, white setae. STRUC- TURE (figs. 1D, 4, 6): Head: Highly contoured; frons strongly tumescent, bounded by irregular depressions and three minor swellings laterally and posteriorly; foveae adjacent to eyes and near posterior margin of vertex deep; posterior margin of head medially rounded, not carinate; gena swollen; mandibular plate tumescent. Thorax: Pronotum broad and somewhat elongate, posteriorly rounded, steeply declivent, deeply, irregularly punctate, anterolateral margins weakly carinate; submarginal region of humeral angles strongly excavate; posterior weakly medially cleft; callar region weakly developed; proepisternum bilobed; propleuron deeply irregularly punctate; posterior margin of metepimeron somewhat lobate; metanotum prominent and flared; scutellum dorsally flattened, apex a rounded lobe (figs. 1D, 4). Hemelytra: Costal margin evenly rounded over its entire length, anterior portion not expanded. Legs: Metatibial spines long and thick. Abdomen: When viewed laterally, posterior margin of abdominal sternite II not distinctly angular. MALE GENITALIA (figs. 7N–P, 9A): Right paramere rounded with a long, sharp triangular process (figs. 7O–P, 9A); left paramere scythe-

shaped, slightly twisted along its axis, thick and laterally compressed at base, becoming thin apically, gutter open over entire length (figs. 7N, 9A); margin of pygophore with long mesal suture and with long, thin fingerlike ventral apical process (fig. 9A). FEMALE PARAGENITALIA: No visible external paragenitalia.

HOST: Collected from the flowers of an unidentified Macaranga sp. (fig. 1C–D), Mallotus japonicus (Euphorbiaceae) and Pentaspadon motleyi (Anacardiaceae) .

DISTRIBUTION: C. chinensis is one of the most widely distributed species of Coridromius , ranging from Nepal and India in the west to Brunei in the east (map 6). It is also known from Northern Queensland, Australia, where it is represented by two specimens.

PARATYPES: CHINA: Guangxi Prov.: Yangshu County, 24.7 ° N 110.4 ° E, 11 Sep 1964, Liang-Chen Wang, 33 (AMNH_PBI 00178050–AMNH_PBI 00178051, AMNH_ PBI 00718052), 1♀ (AMNH_PBI 00718053) (NKMU).

OTHER SPECIMENS EXAMINED: AUSTRA- LIA: Queensland: 1 km SE of Mt. Cook, 15.3 ° S 145.16 ° E, 13 Oct 1980, T. Weir, 2♀ (AMNH_PBI 00201293, AMNH_PBI 00201294) (QM). BRUNEI DARUSSALAM: Bukit Sulang, near Lamunin, 4.67777 ° N 114.72694 ° E, 20 Aug 1982 – 10 Sep 1982, N. E. Stork, Pentaspadon motleyi (Anacardiaceae) , 13 (AMNH_PBI 00178011) (BMNH). CHINA: Yunnan Prov.: Xishuangbanna Tropical Botanical Garden, edge of gallery forest, 21.93222 ° N 101.245 ° E, 547 m, 26 May 2006, N. Tatarnic, Macaranga sp. (Euphorbiaceae) , 133 (AMNH_PBI 00006050– AMNH_PBI 00006062), 5♀ (AMNH_PBI 00006063–AMNH_PBI 00006067) (AMNH). Xishuangbanna Tropical Botanical Garden, gallery forest by river, 21.93333 ° N 101.24444 ° E, 553 m, 26 May 2006 – 28 May 2006, N. Tatarnic, Macaranga sp. (Euphorbiaceae) , 143 (AMNH_ PBI 00006020–AMNH_PBI 00006033), 16♀ (AMNH_PBI 00006034–AMNH_PBI 00006049) (AMNH). INDIA: Karnataka: Kolar Dist.: Chikkaballapura (Chikballapur), 13.28 ° N 77.44 ° E, 1926, T.V. Campbell, 23 (AMNH_ PBI 00178005, AMNH_PBI 00178006), 1♀ (AMNH_PBI 00178007) (BMNH). Mysore, Nandidrug, 12.18 ° N 76.42 ° E, 1930, T. V. Campbell, 8 adults (AMNH_PBI 00178001) (BMNH); 1926, T. V. Campbell, 10 adults (AMNH_PBI 00178003) (BMNH). Meghalaya: West Garo Hills, Balphakram NP, 25.18333 ° N 90.85 ° E, 250–550 m, 22–27 May 1996, E. Jendek and O. Sausa, 13 (AMNH_PBI 00189982) (NHMW). West Garo Hills, Nokrek NP, 25.49333 ° N 90.325 ° E, 950–1250 m, 09–17 May 1996, E. Jendek and O. Sausa, 13 (AMNH_PBI 00018971), 1♀ (AMNH_PBI 00018972) (NHMW). Uttaranchal: Kumaon Div.: West Almora, 30.18333 ° N 80.01666 ° E, H. G. Crawford, 13 (AMNH_PBI 00178004) (BMNH). Nainital Dist.: Bindukhera, 29.33333 ° N 79.5 ° E, 1938 m, 13 Apr 1909, Unknown, 13 (AMNH_PBI 00178002) (BMNH). JAPAN: Honshu: Okayama Pref.: Mount Takakura, Sanyo T., Okayama, 34.75694 ° N 133.85527 ° E, 21 Jul 1996, T. Yasunaga, 23 (AMNH_PBI 00190001), 5 adults (AMNH_PBI 00189999, AMNH_PBI 00190002) (TYCN). Kyushu: Miyazaki Pref.: Okawachi, Shiiba Village, 32.01666 ° N 131.35 ° E, 21 Jul 1992, T.J. Henry and A.G. Wheeler, 13 (AMNH_PBI 00185358), 2♀ (AMNH_PBI 00185356, AMNH_PBI 00185357) Mallotus japonicus (Euphorbiaceae) , 13 (AMNH_PBI 00185359), 2♀ (AMNH_PBI 00185360, AMNH_PBI 00185361) (USNM). Okinawa Pref.: Ryukyu Islands, Ishigaki I., Kobo, Miyako, 24.2 ° N 124.09 ° E, 10–20 Nov 1952, G. Bohart, 13 (AMNH_PBI 00042144) (BPBM). Ryukyu Islands, Miyako I., Hirara, 24.8 ° N 125.2833 ° E, 28 m, 23 Oct 1952, G. Bohart, 1♀ (AMNH_PBI 00042143) (BPBM). LAO PEOPLE’S DEMOCRATIC REPUBLIC: Luang Namtha Prov.: Luang Nam Tha ,, 3 km N of town, 20.97333 ° N 101.37777 ° E, 600 m, 03 Jun 2006, N. Tatarnic and D. C. Darling, Macaranga sp. (Euphorbiaceae) , 53 (AMNH_PBI 00006078–AMNH_PBI 00006082), 1♀ (AMNH_PBI 00006083) (AMNH). Luang Namtha, behind airport, 20.94777 ° N 101.40305 ° E, 547 m, 03 Jun 2006, N. Tatarnic and D. C. Darling, Macaranga sp. (Euphorbiaceae) , 23 (AMNH_PBI 00006075, AMNH_PBI 00006076) (AMNH). Nam Tha N. P.,,30 min from Ban Nalan village, 20.84027 ° N 101.34694 ° E, 639 m, 04 Jun 2006, N. Tatarnic and D. C. Darling, Macaranga sp. (Euphorbiaceae) , 13 (AMNH_ PBI 00006077) (AMNH). ca. 10 km E Luang Namtha, 20.95 ° N 101.4167 ° E, 600 m, 19 Jun 1996, Schillhammer, 13 (AMNH_PBI 00190013) (NHMW). Sekong Prov.: Bolavens Plateau, N slope, ca. 10 km N. Mg Tha Theng, 15.5 ° N 106.43333 ° E, 500–700 m, 29–30 May 1996, Schillhammer, 23 (AMNH_PBI 00189980, AMNH_PBI 00189981) (NHMW). NEPAL: Royal Chitwan National Park, Machan Resort, 27.58305 ° N 84.5 ° E, 07–09 Sep 2005, T. Yasunaga, M. Takai and T. Shishido, 13, 1♀ (AMNH_PBI 00190000) (TYCN). TAI- WAN: Nantou Co.: Lien-hua-chih, 3 km W of Yuchih, 24.21667 ° N 121.5 ° E, 12–14 Jul 1992, T.J. Henry and A.G. Wheeler, 13 (AMNH_PBI 00185363), 1♀ (AMNH_PBI 00185364) Mallotus japonicus (Euphorbiaceae) , 13 (AMNH_PBI 00185362) (USNM). Pihu, 49 km E of Taipei on Hwy 9 to Yilan, 29.245 ° N 105.6458 ° E, 380 m, 18 Feb 1972, T.C. Maa, 1♀ (AMNH_PBI 00042145) (BPBM). VIETNAM: Tam Dao NP, 21.4536 ° N 105.6436 ° E, 900 m, 17–18 Jun 1999, Y. Nakatani, 33 (AMNH_PBI 00190009–AMNH_PBI 00190011) (TYCN).