Coridromius pilbarensis, 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 : 74-77

Coridromius pilbarensis , new species Figures 5, 6, 15J–L, 16A–B, map 4

HOLOTYPE: Male: AUSTRALIA: Western Australia: Pilbara Region: Base of Mt. Nameless , adjacent to gate, 22.72694 ° S 117.74916 ° E, 05 Jun 2004, M. Bulbert, N. Tatarnic and S. Lassau ( AMNH _ PBI 00012358 ) ( AM).

DIAGNOSIS: Recognized by the following combination of characters: unique orange, brown, and yellow coloration; proepisternum unilobed; metanotum not prominently flared; posterior margin of pygophore biconvex, with prominent fold on left side forming Ushaped groove, with small apophysis on right margin of groove. Of the Australian species chenopoderis , monotocopsis and pilbarensis , the latter is the largest and generally most consistent in its coloration. Males are readily told by the small ventral apical process adjacent to the deep folded groove on the posterior margin of the pygophore, while females typically have a faintly greenish abdomen.

DESCRIPTION: COLORATION (figs. 5, 6): Mostly orange with brown markings above, yellow beneath. Head: Mostly orange-yellow to yellow with 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, sometimes with an additional dark brown marking in between; clypeus with irregular median and lateral brown markings; labrum light brown; labium yellow, brown apically. Antenna: AI yellow with narrow light brown bands apically and basally; AII yellow to yellow-orange, slightly brown apically; AIII and AIV orange-brown. Thorax: Pronotal collar yellow with brown to black anterior and posterior margins; pronotum orange with faint yellow midline and margins; callar region with irregular dark brown to black markings; disk sometimes slightly darkened, sometimes with broad dark brown to black markings; mesoscutum orange, black anteriorly; scutellum orange with dark brown markings anteromedially and laterally, apex yellowed laterally; thoracic pleura yellow-orange with yellow margins; prosternum dark brown to black ventrally. Hemelytra: Yellow-orange to orange, lighter apically; inner margins of clavus and claval commissure dark brown, fusing laterally with dark brown chevron across corium, sometimes with a faintly darkened spot; cuneus becoming yellow; membrane faintly brown with dark brown veins. Legs: Coxae yellow; pro- and mesofemora yellow to orangeyellow with faint, irregular subapical brown band; hind femur yellow with 8–9 dark brown diagonal stripes on outer surface, somewhat orange anteriorly below stripes; tibiae yellow to orange-yellow; tarsi brown apically. Abdomen: In females yellow or yellow-green; in males yellow with lateral brown and orange markings, with bright reddish-orange tinting on and around genital capsule. SURFACE AND VESTITURE (figs. 5, 6): Head glossy and shallowly punctate; pronotum shallowly punctate; propleuron, metepimeron, scutellum and hemelytra impunctate; head and dorsum sparsely covered in short, white, decumbent setae. STRUCTURE (figs. 5, 6): Head: Frons weakly tumescent medially; 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, lateral margins thinly carinate, anterolateral angles weakly upturned, posterior margin medially cleft, submarginal region of humeral angles weakly excavate; proepisternum unilobed; posterior margin of metepimeron truncate; metanotum not prominent and flared. Hemelytra: Costal margin thin and weakly rounded, nearly straight. Legs: Metatibial spines long and thick. Abdomen: When viewed laterally, posterior margin of abdominal sternite II not distinctly angular. MALE GENITALIA (figs. 15J–L, 16A–B): Right paramere broad, short, triangular (fig. 15K–L); left paramere sickle-shaped, strongly attenuate (figs. 15J, 16A); posterior margin of pygophore with distinct fold on left forming a U-shaped groove (fig. 16A), the upper right corner forming a small process (fig. 16A–B). FEMALE PARAGEN- ITALIA: No visible external paragenitalia; site of copulation unknown.

ETYMOLOGY: Named after the Pilbara Region, where the holotype was collected.

HOST: Most specimens have been collected from Melaleuca spp. (Myrtaceae) , but pilbar- ensis has also been collected in large numbers on Dodonaea viscosa angustissima (Sapindaceae) (see table 2).

DISTRIBUTION: Found on both the west and east coasts of Australia (map 4).

PARATYPES: AUSTRALIA: New South Wales: 27 km W of Retreat (30 km E Manilla), 30.66668 ° S 150.8333 ° E, 350 m, 24 Oct 1995, Schuh and Cassis, Schinus areira L. ( Anacardiaceae ), det. P.G. Wilson 1996 NSW395924, 13 (AMNH_PBI 00012432), 1♀ (AMNH_PBI 00012433) (AM). Palm Beach, Sydney, 33.598 ° S 151.326 ° E, 16 Oct 1988, Richard Bejsak, 1♀ (AMNH_PBI 00012441) (AM). Western Australia: 11 km N of Coolgardie-Esperance Hiway on Kambalda Road, 31.25231 ° S 121.5899 ° E, 320 m, 18 Nov 1999, R.T. Schuh, G. Cassis, and R. Silveira, Melaleuca sheathiana W. Fitzg. (Myrtaceae) , det. Perth staff PERTH- 05671396, 23 (AMNH_PBI 00012328, AMNH_ PBI 00012329), 1♀ (AMNH_PBI 00012330) (AM). 17 mi N of Paynes Find, 29.01 ° S 117.68 ° E, 400 m, 10 Mar 1962, E. S. Ross and D. Q. Cavagnaro, 13 (AMNH_PBI 00002644) (AMNH). 20.6 km S of Norseman-Lake King Road on Lake King-Cascades Road, 33.16284 ° S 120.2813 ° E, 400 m, 22 Nov 1999, R.T. Schuh, G. Cassis, and R. Silveira, Gastrolobium spinosum Benth. (Papilionaceae) , det. Perth staff PERTH- 05671736, 1♀ (AMNH_PBI 00012331) (AM). 3 km S of Kojonup, Sampson Road, 33.87088 ° S 117.1648 ° E, 310 m, 08 Dec 1997, Schuh, Cassis, Brailovsky, Asquith, Melaleuca rhaphiophylla Schauer (Myrtaceae) , det. Perth staff PERTH- 05879183, 1♀ (AMNH_PBI 00012429) (AM). 31.3 km N of Ravensthorpe, 33.36519 ° S 119.8792 ° E, 500 m, 05 Nov 1996, Schuh and Cassis, Santalum lanceolatum R.Br. (Santalaceae) , det. Perth staff PERTH05236665, 33 (AMNH_PBI 00012341–AMNH_PBI 00012343), 1♀ (AMNH_PBI 00012344) (AM). 13 (AMNH_PBI 00002527), 11♀ (AMNH_PBI 00002528–AMNH_PBI 00002538) (AMNH). 33.3 km S of Norseman, 32.46461 ° S 121.6778 ° E, 300 m, 19 Nov 1999, R.T. Schuh, G. Cassis, and R. Silveira, Santalum acuminatum R. Br. (Santalaceae) , det. Perth05671094, 83 (AMNH_PBI 00012272–AMNH_PBI 00012279), 7♀ (AMNH_PBI 00012280– AMNH_PBI 00012286) (AM). 4.3 km N of Peak Charles National Park, 32.81408 ° S 121.2114 ° E, 200 m, 20 Nov 1999, R.T. Schuh and G. Cassis, Dodonaea viscosa angustissima (Sapindaceae) , det. Perth staff PERTH- 05670705, 13 (AMNH_PBI 00012430) (AM). 43 km N of Norseman, 31.85648 ° S 121.6414 ° E, 300 m, 19 Nov 1999, R.T. Schuh, G. Cassis, and R. Silveira, Santalum acuminatum (R.Br.) A.DC. (Santalaceae) , det. Perth staff PERTH- 05671094, 63 (AMNH_PBI 00012333–AMNH_ PBI 00012338), 2♀ (AMNH_PBI 00012339, AMNH_PBI 00012340) (AM). Atriplex bunburyana F.Muell. (Chenopodiaceae) , det. Perth staff PERTH05671205, 73 (AMNH_PBI 00002565–AMNH_PBI 00002571), 9♀ (AMNH_ PBI 00002572–AMNH_PBI 00002580) (AMNH). 56.6 km W of Yalgoo, 28.42397 ° S 116.1233 ° E, 600 m, 27 Oct 1996, Schuh and Cassis, Melaleuca uncinata R.Br. (Myrtaceae) , det. Perth staff PERTH05120640, 1♀ (AMNH_PBI 00012345) (AM). Augusta, 34.34212 ° S 115.1661 ° E, 30 m, 04 Dec 1999, R.T. Schuh and G. Cassis, 13 (AMNH_PBI 00012297) (AM). Cosy Corner Beach East, Torbay Sound, W of Albany, 35.06033 ° S 117.6446 ° E, 2 m, 01 Dec 1999, R.T. Schuh, G. Cassis, and R. Silveira, Santalum acuminatum R. Br. (Santalaceae) , det. Perth staff PERTH05677094, 113 (AMNH_PBI 00002549–AMNH_PBI 00002559), 5♀ (AMNH_PBI 00002560– AMNH_PBI 00002564) (AMNH). Hamersley Inlet Campground, sea level, 33.95786 ° S 119.91456 ° E, 28 Nov 1999, R.T. Schuh, G. Cassis, and R. Silveira, Scaevola crassifolia Labill. (Goodeniaceae) , det. Perth staff PERTH05672295, 1♀ (AMNH_PBI 00012332) (AM). Lake Magenta Road, 4 km N of South Coast Hiway, 33.77872 ° S 119.2887 ° E, 400 m, 07 Dec 1997, Schuh, Cassis, Brailovsky, Asquith, Melaleuca hamulosa Turcz. (Myrtaceae) , det. Perth staff PERTH05054567, 5♀ (AMNH_ PBI 00012324–AMNH_PBI 00012327, AMNH_ PBI 00012431) (AM). Melaleuca hamulosa Turcz. (Myrtaceae) , det. Perth staff PERTH- 05054567, 1♀ (AMNH_PBI 00002745) (AMNH). Mt. Lindesay, 23 km NW of Denmark, 34.85058 ° S 117.2767 ° E, 100 m, 17 Dec 1997, Schuh, Cassis, Brailovsky, Agonis linearifolia? (DC.)Sweet (Myrtaceae) , det. Perth staff PERTH05095360, 13 (AMNH_PBI 00002539) (AMNH). Peak Charles National Park Campground, 32.88335 ° S 121.1703 ° E, 300 m, 20 Nov 1999, R.T. Schuh, G. Cassis, and R. Silveira, Melaleuca uncinata R.Br. (Myrtaceae) , det. Perth staff PERTH05670721, 43 (AMNH_ PBI 00012287–AMNH_PBI 00012290), 6♀ (AMNH_PBI 00012291–AMNH_PBI 00012296) (AM). Dodonaea viscosa angustissima (DC.) J.G. West ( Sapindaceae ), det. Perth staff PERTH05670705, 83 (AMNH_PBI 00012298– AMNH_PBI 00012305), 18♀ (AMNH_PBI 00012306–AMNH_PBI 00012323) (AM). Pilbara Region: Base of Mt Nameless, adjacent to gate, 22.72694 ° S 117.74916 ° E, 05 Jun 2004, M. Bulbert, N. Tatarnic and S. Lassau, 43 (AMNH_PBI 00012360–AMNH_PBI 00012363), 10♀ (AMNH_ PBI 00012364–AMNH_PBI 00012373) (AM). Pilbara Region: Karijiji NP, Dales Gorge, Fortescue falls, 22.47694 ° S 118.54944 ° E, 07 Jun 2004, M. Bulbert, 13 (AMNH_PBI 00012359) (AM).

OTHER SPECIMENS EXAMINED: AUSTRA- LIA: Australian Capital Territory: Canberra, 35.2833 ° S 149.2167 ° E, 605 m, 1973, J.C.M. Carvalho, 1♀ (AMNH_PBI 00192745) (BMNH). New South Wales: Bogan River, J. Armstrong, 13 (AMNH_PBI 00192747), 1♀ (AMNH_PBI 00192746) (BMNH). Cowra, 33.819 ° S 148.658 ° E, 25 Mar 1960, M. I. Nikitin, Light Trap, 13 (AMNH_PBI 00192755), 1♀ (AMNH_PBI 00192744) (BMNH). Saltwater Reserve, 15 km SE of Taree, littoral rainforest, 31.915 ° S 152.451 ° E, 10 Dec 1991, G. Williams, Euroschinus falcata (Anacardiaceae) , 1♀ (AMNH_PBI 00012435) (AM); 03 Dec 1991, G. Williams, Euroschinus falcata (Anacardiaceae) , 13 (AMNH_PBI 00001236), 1♀ (AMNH_PBI 00001237) (AM); 26 Nov 1991, G. Williams, Euroschinus falcata (Anacardiaceae) , 1♀ (AMNH_PBI 00001238) (AM). Western Australia: Peak Charles National Park Campground, 32.88335 ° S 121.1703 ° E, 300 m, 20 Nov 1999, R.T. Schuh, G. Cassis, and R. Silveira, Melaleuca uncinata R.Br. (Myrtaceae) , det. Perth staff PERTH05670721, 10 juveniles (AMNH_PBI 00015533–AMNH_PBI 00015542) (AM).