Coridromius monotocopsis, Tatarnic & Cassis, 2008
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 : 67-72
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Coridromius monotocopsis , new species Figures 1E–F, 5, 6, 14D, 15A–C, map 4
DIAGNOSIS: Recognized by the following combination of characters: proepisternum unilobed, metanotum not prominently flared;
posterior margin of pygophore biconvex, with fold on left side forming a shallow Ushaped groove, without small process on right margin of groove; light orange-brown coloration, males generally with dark brown coloring on side of abdomen. C. monotocopsis is similar to both Australian species chenopoderis and pilbarensis , and also resembles bicolor and the type species variegatus . Of the Australian species, monotocopsis is of more or less intermediate size between the other two, broader than chenopoderis , and typically uniformly light orange-brown in coloration. Males can be told apart by their relatively longer left paramere and much shallower U-shaped fold on the posterior margin of the pygophore, as well as by the distinctive dark brown band on the sides of the abdomen of most specimens.
DESCRIPTION: COLORATION (figs. 5, 6): Mostly orange-brown with darker brown markings, females usually paler than males. Head: Mostly orange-brown, becoming paler ventrally; dark brown vittae on frons; lateral margins bordering eyes and posterior margin of vertex yellow, lateral tumescences on vertex yellow, depressions behind tumescences dark brown; clypeus lighter orange-brown with faint median and lateral brown markings; maxillary plate and buccula yellow; labrum light orange-brown; labium yellow, brown apically. Antenna: AI yellow with thin light orange-brown bands apically and basally; AII orange-brown, not brown apically; AIII and AIV orange-brown, darker than AII. Thorax: Pronotal collar yellow-brown to orange-brown; pronotum orange-brown with faint yellow medial stripe and margins, in males callar region with irregular dark brown to black markings; mesoscutum orangebrown; scutellum orange-brown with white markings at basal angles and on either side of apex, in males sometimes with a broad, dark brown medial marking that sometimes extends over the entire scutellum; thoracic pleura orange-brown with yellow margins, in males sometimes becoming dark brown. Hemelytra: Yellow-brown to orange-brown, sometimes with faint reddish-orange markings at apex of embolium and on cuneus; in males inner margins of clavus and claval commissure dark brown, sometimes fusing laterally with dark brown chevron across corium; cuneus becoming yellow; membrane faintly brown with orange to brown veins. Legs: Coxae yellow; pro- and mesofemora yellow with faint, irregular subapical brown band; hind femur yellow with 8–9 dark brown diagonal stripes on outer surface, with broad, brown marking ventrally, darker in males; tibiae yellow to orange-yellow; tarsi brown apically. Abdomen: Yellow in females, sometimes slightly reddened along ovipositor; in males yellow with lateral dark brown triangular band tapering toward apex, sometimes with bright reddish-orange tinting on and around genital capsule. SURFACE AND VESTITURE (figs. 5, 6): Head glossy with shallow punctures and very short, decumbent setae; pronotum with shallow punctation; proepisternum, metepimeron and hemelytra impunctate; scutellum weakly rugulose; dorsum sparsely covered in short, simple, white, decumbent setae. STRUC- TURE (figs. 5, 6): Head: Broad; frons weakly tumescent medially; with paired tubercles adjacent to eyes, bordered posteriorly by shallow depressions; posterior margin of head slightly rounded medially but otherwise flat. Thorax: Pronotum broad and rounded, margins thinly carinate, anterolateral margins weakly upturned, posterior margin not medially cleft, submarginal region of humeral angles weakly excavate; proepisternum unilobed; posterior margin of metepimeron truncate; metanotum not prominent and flared. Hemelytra: Lateral margin of embolium thin and evenly round- ed, nearly straight. Legs: Metatibial spines long and thick. Abdomen: When viewed laterally, posterior margin of abdominal sternite II not distinctly angular. MALE GENITALIA (figs. 14D, 15A–C): Right paramere broad, short, triangular (fig. 15B– C); left paramere sickle-shaped, strongly attenuate (figs. 14D, 15A); posterior margin of pygophore with shallow folded groove to left of midline (fig. 14D). FEMALE PARA- GENITALIA: No visible external paragenitalia; site of copulation unknown.
ETYMOLOGY: Named for its host plant, Monotoca elliptica .
DISTRIBUTION: Found primarily in eastern Australia, but also known from four speci-
mens collected on Norfolk Island, where we believe it has been introduced (map 4).
PARATYPES: AUSTRALIA: New South Wales: Booti Booti NP, 32.27972 ° S 152.52444 ° E, 09 Oct 1997, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 43 (AMNH_ PBI 00012228, AMNH_PBI 00012228–AMNH_ PBI 00012229, AMNH_PBI 00012229), 3♀ (AMNH_PBI 00012230–AMNH_PBI 00012232) (AM); 02 Apr 1998, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 13 (AMNH_PBI 00012233) (AM); 08 Oct 1997, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 1♀ (AMNH_PBI 00012234) (AM); 12 Nov 1996, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 33 (AMNH_ PBI 00012235–AMNH_PBI 00012237) (AM); 30 May 1997, L. Wilkie, 13 (AMNH_PBI 00012238) (AM). Callala Beach, 35.015 ° S 150.701 ° E, 18 May 1997, G. Cassis, Monotoca sp. ( Epacridaceae ), 113 (AMNH_PBI 00012256–AMNH_ PBI 00012266), 5♀ (AMNH_PBI 00012267– AMNH_PBI 00012271) (AM). Munmorah State Rec. Area, 33.21916 ° S 151.57083 ° E, 11 Dec 1996, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 323 (AMNH_PBI 00012123– AMNH_PBI 00012126, AMNH_PBI 00012128– AMNH_PBI 00012150, AMNH_PBI 00012197– AMNH_PBI 00012201), 46♀ (AMNH_PBI 00012151–AMNH_PBI 00012196) (AM); 18 Nov 1996, L. Wilkie, Chrysanthemoides monilifera ( Asteraceae ), 13 (AMNH_PBI 00012209) Monotoca elliptica ( Epacridaceae ), 63 (AMNH_PBI 00012202–AMNH_PBI 00012207), 1♀ (AMNH_PBI 00012208) (AM); 12 Oct 1997, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 4♀ (AMNH_PBI 00012210–AMNH_PBI 00012213) (AM); 11 Oct 1997, L. Wilkie, 1♀ (AMNH_PBI 00012214) (AM); 29 May 1997, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 23 (AMNH_PBI 00012215, AMNH_PBI 00012216) (AM); 04 Apr 1998, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 13 (AMNH_PBI 00012217) (AM); 14 May 1998, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 23 (AMNH_PBI 00012218, AMNH_ PBI 00012219) (AM); 15 Dec 1996, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 13 (AMNH_PBI 00012220) (AM); 23 May 1998, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 13 (AMNH_PBI 00012221) (AM); 05 Apr 1998, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 13 (AMNH_PBI 00012222) (AM); 01 May 1997, L. Wilkie, 1♀ (AMNH_ PBI 00012227) Monotoca elliptica ( Epacridaceae ), 13 (AMNH_PBI 00012223) (AM); 31 May 1997, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 13 (AMNH_PBI 00012224), 1♀ (AMNH_PBI 00012225) (AM); 27 Nov 1997, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 1♀ (AMNH_PBI 00012226) (AM). Myall Lakes NP, 32.57916 ° S 152.29083 ° E, 09 Oct 1997, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 53 (AMNH_PBI 00012240– AMNH_PBI 00012244), 8♀ (AMNH_PBI 00012245–AMNH_PBI 00012252) Acacia longifolia ( Mimosaceae ), 13 (AMNH_PBI 00012239) (AM); 29 Apr 1997, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 13 (AMNH_PBI 00012253) (AM); 10 Oct 1997, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 1♀ (AMNH_PBI 00012254) (AM); 24 May 1998, L. Wilkie, Monotoca elliptica ( Epacridaceae ), 1♀ (AMNH_PBI 00012255) (AM). Nullica Beach, 37.06 ° S 149.53 ° E, 31 May 1989, G. Cassis, 23 (AMNH_PBI 00012427, AMNH_PBI 00012428), 1♀ (AMNH_PBI 00015736) (AM). Royal National Park, Wattomolla Beach car park, 34.13334 ° S 151.1134 ° E, 29 m, 14 Nov 2001, Cassis, Schuh, Schwartz, Silveira, Monotoca elliptica (Sm.) R.Br. ( Ericaceae ), det. NSW staff NSW666424, 1083 (AMNH_PBI 00015256– AMNH_PBI 00015333, AMNH_PBI 00015436– AMNH_PBI 00015465), 126♀ (AMNH_PBI 00015334–AMNH_PBI 00015435, AMNH_PBI 00015466–AMNH_PBI 00015489) (AM); 12 Apr 2004, G. Cassis, P. Tinerella, N. Tatarnic, N. Velez, K. McLachlan, Monotoca elliptica (Sm.) R.Br. ( Ericaceae ), 5♀ (AMNH_PBI 00114228– AMNH_PBI 00114232) (CNC). Queensland: East Woodmillar, 25.68333 ° S 151.6 ° E, 250 m, 17 Dec 1998, Monteith and Gough, 1♀ (AMNH_PBI 00178068) (QM). Victoria: Little Desert National Park, 5–6 km W of McDonald Hiway, 36.61668 ° S 141.1667 ° E, 150 m, 03 Nov 1995, Schuh and Cassis, Melaleuca wilsonii F. Muell. ( Myrtaceae ), det. P.G. Wilson 1996 NSW395985, 103 (AMNH_ PBI 00015567–AMNH_PBI 00015576), 16♀ (AMNH_PBI 00015577–AMNH_PBI 00015592) (AM). Brachyloma daphnoides (Smith) Benth. ( Epacridaceae ), det. E.A. Brown 1996 NSW395984, 33 (AMNH_PBI 00002593– AMNH_PBI 00002595), 5♀ (AMNH_PBI 00002596–AMNH_PBI 00002600) (AMNH).
OTHER SPECIMENS EXAMINED: NOR- FOLK ISLAND: 29.033 ° S 167.949 ° E, A.M. Lea, 4 adults (AMNH_PBI 00038583) (SAMA).
Coridromius nakatanii Chérot, Konstantinov and Yasunaga Figures 5, 6, 14E–F, 15D–F, map 5
DIAGNOSIS: Easily recognized by the strongly posteriorly flared embolium and long, thin left paramere, closed except at apex. C. nakatanii is superficially similar to crassus , declivipennis , and pteraulos , but all four can be told apart by the shape of the hemelytra and their coloration. Additionally, the left paramere of nakatanii is thinner, more twisted apically and enclosed until its apex, unlike in the other three species, and the female possesses a prominent paragenital opening within abdominal sternite II.
REDESCRIPTION: COLORATION (figs. 5, 6): Mostly brownish yellow to dark brown with yellow and dark brown markings. Head: Brownish yellow; very faint vittae on frons; lateral swellings adjacent to eyes yellow, merging with yellow ocular and posterior margins; clypeus yellow, brown apically, with one medial light brown spot and two lateral light brown stripes; gena, mandibular and maxillary plates yellow; buccula yellow, dark brown basally; labrum brown; labium yellow, brown apically. Antenna: AI dark brown, yellow at base and apex; AII light orangebrown, slightly darker at base, with dark brown medial band separated from broad, dark brown apical annulation by a thin yellow subapical annulation; AIII and AIV dark brown, yellow basally. Thorax: Pronotal collar yellow, darkened along anterior and posterior margins; pronotum mostly brownish yellow to nearly uniform dark brown, with yellow midline; paler specimens with two small dark brown spots on anterior margin behind eyes, two larger brown patches above callar region and the posterior margin somewhat darkened, darker specimens with faint yellowing submarginally at humeral angles, lateral and posterior margins yellow; mesoscutum in pale specimens orange-brown, becoming dark brown medially and laterally, in darker specimens uniform dark brown; scutellum brownish yellow to dark brown with yellow midline, apex and sides yellow, basally with dark brown markings medially and laterally; thoracic pleura brownish yellow with some faint darker brown markings, sometimes nearly uniform dark brown, posterior margins of pleura yellowed; proepisternal lobes yellow. Hemelytra: Brownish yellow with punctures darkened, in dark specimens nearly uniform dark brown; clavus darker anteriorly, claval commissure slightly pale; broad, pale specimens with dark brown patch extending across corium and embolium, broken transversely by yellow medial fracture, all specimens with yellow C-shaped pattern near costal fracture; veins yellow above costal fracture; cuneus light to dark brown; membrane pale brown, slightly brown subapically, with dark brown veins enclosing cell. Abdomen: Brownish yellow. Legs: All coxae pale yellow; pro- and mesofemora pale yellow; metafemur yellow with 8 diagonal dark brown stripes on outer surface, dark brown patch medioventrally, lateroapical depressions dark brown; tibiae yellow, metatibia slightly brown. SURFACE AND VESTITURE (figs. 5, 6): Head, pronotum, propleuron, metepimeron, scutellum and hemelytra finely punctate; head and dorsum clothed in long, white, decumbent setae. STRUCTURE: Head: Frons weakly tumescent medially, merging with minor median swelling on vertex; vertex with two minor swellings adjacent to eyes; posterior margin of head weakly medially rounded, somewhat carinate. Thorax: Pronotum broad and steep, lateral margins carinate, anterolateral margins not upturned, submarginal region of humeral angles excavate, posterior steeply declivent, callar region poorly defined; proepisternum bilobed; posterior margin of metepimeron in the form of a short, broadly rounded lobe; metanotum prominent and flared; scutellum flat dorsally. Hemelytra: Costal margin thinly carinate, greatly flared posteriorly. Legs: Metatibial spines long and thick. Abdomen: When viewed laterally, posterior margin of sternite II distinctly angular. MALE GENITALIA (figs. 14E–F, 15D–F): Right paramere broad and rounded with thumblike lobe, paramere appears Ushaped from above (figs. 14E–F, 15E–F); left paramere thick, elongate and sharply angled
basally, then evenly curved and tapering to apex with a slight twist along its axis, curved at tip, gutter tightly closed until apex (figs. 14E–F, 15D); pygophore with a long mesal suture and long, triangular ventral apical process (fig. 14E–F). FEMALE PARAGENITALIA: Female with prominent paragenital opening within abdominal segment II, opening directed caudally.
REMARKS: The possession of a prominent paragenital opening in abdominal sternite II is shared with falsicoleus and sommelieri , however in the latter two species this opening leads to a sclerotized copulatory tube projecting into the abdomen, whereas in nakatanii the paragenital opening is angled caudally.
DISTRIBUTION: Collected in Lao PDR, Vietnam, and India (map 5).
HOLOTYPE: Male: LAO PEOPLE’S DEMOCRATIC REPUBLIC: 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 ( AMNH _ PBI 00189978 View Materials ) ( NHMW). GoogleMaps
PARATYPES: INDIA: Meghalaya: West Garo Hills, Nokrek NP, 25.49333 ° N 90.325 ° E, 950–1250 m, 09–17 May 1996, E. Jendek and O. Sausa, 1♀ ( AMNH _PBI 00189979) ( NHMW). VIETNAM: Blao (Balao), 11.53333 ° N 107.8 ° E, 500 m, 14–21 Oct 1960, C. M. Yoshimoto, 1♀ ( AMNH _PBI 00042605) ( BPBM). Tam Dao NP, 21.4536 ° N 105.6436 ° E, 900 m, 17– 18 Jun 1999, Y. Nakatani, 53 ( AMNH _PBI 00190003– AMNH _PBI 00190007), 1♀ ( AMNH _ PBI 00190008) ( TYCN).
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