Coridromius sommelieri, 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 : 82-85

Coridromius sommelieri , new species Figures 5, 6, 17H–K, 19A–F, 20B, map 5

HOLOTYPE: Female : MALAYSIA: Sabah:

Tenompok, 6.01777 ° N 116.48555 ° E, 637 m,

15 Feb 1959, T.C. Maa ( AMNH _PBI 00041567) ( BPBM type # 16734) ( BPBM).

DIAGNOSIS: This species is recognized by the following combination of characters: bilobed proepisternum; embolium with yellow U-shaped fascia near cuneal fracture; outer margin of embolium straight and carinate; male left paramere tightly corkscrewed with apex perpendicular to axis; female with corkscrewed paragenital opening on the right side of the abdomen in sternite II. This species is very similar to zetteli , but the ventral apical process on the pygophore is much more pronounced in sommelieri and the apex of the left paramere is perpendicular to its axis, rather than almost parallel as in zetteli . The female of zetteli is unknown.

DESCRIPTION: COLORATION (figs 5, 6): Yellow-brown with yellow and dark brown markings. Head: Light orange-brown; frons sometimes with pale brown vittae, faintly yellow along midline; ocular margins, raised lateral tubercles and posterior margin of head yellow; clypeus dark orange-brown, darkest at apex; maxillary plates tinted orange; labrum dark brown; labium light orangebrown, dark brown at apex. Antenna: AI dark brown; AII light yellow-brown with dark brown subapical band separated from dark brown apical annulation by narrow cream-colored band, base somewhat darkened; AIII and AIV dark brown, pale at base. Thorax: Pronotal collar yellow to brownish yellow; pronotum light orange-brown with two large dark brown markings reaching from anterior margin almost to posterior margin, midline pale, lateral and posterior margins yellow; mesoscutum orange-brown; scutellum light to dark brown with yellow midline, apex and sides; thoracic pleura mostly yellow-brown to orange-brown with posterior margins of each sclerite yellowed; mesopleuron dark brown ventrally. Hemelytra: Predominantly light orange-brown, with darker brown markings on corium and embolium above cuneal fracture; costal margins yellow; U-shaped fascia on lateroapical margin of embolium yellow to orange; cuneus dark brown; membrane light brown with dark brown veins. Legs: Pro- and mesofemora and tibiae light yellow-brown, sometimes tinted orange; metafemur yellowed basally, with 8 or 9 diagonal brown stripes merging with dark brown patch below, apex brown; metatibia orange-brown to dark brown. Abdomen: Orange-brown with alternating cream and dark brown markings along dorsolateral margin. SUR- FACE AND VESTITURE (figs. 5, 6, 19A– B): Head, pronotum, propleuron, metepimeron (fig. 19A–B), scutellum, and hemelytra finely shallowly punctate; head and dorsum clothed in long, silvery, decumbent setae. STRUCTURE (figs. 5, 6, 19A–B): Head: Frons broadly tumescent medially; lateral tubercles adjacent to eyes small, bordered posteriorly by shallow foveae; posterior margin of head carinate and medially rounded. Thorax: Pronotum broad, margins slightly carinate, anterolateral margins slightly turned upward, submarginal region of humeral angles excavated, callar region undifferentiated; proepisternum bilobed; posterior margin of metepimeron truncate (fig. 19A–B); metanotum prominent and flared; scutellum flattened. Hemelytra: Costal margin straight and carinate; embolium with U-shaped fascia on lateroapical angle. Legs: Metatibial spines long and thick. Abdomen: Posterolateral margin of abdominal sternite II angular (fig. 19A). MALE GENITALIA (figs. 17H–K, 19D–F): Right paramere broad and rounded with thumblike lobe, appearing U-shaped when viewed dorsally (figs. 17I–K, 19E); left paramere straight and tightly coiled along its axis, apex thin and angled perpendicular to axis (figs. 17H, 19E–F); posterior margin or pygophore with broad, triangular ventral apical process and long mesal suture (fig. 19D). FEMALE PARAGENITALIA (figs. 19B–C, 20B): On right side of body, corkscrewed copulatory canal located intrasegmentally in sternite II (figs. 19B–C, 20B).

ETYMOLOGY: The name sommelieri refers to the shape of the male left paramere, reminiscent of a sommelier’s corkscrew.

REMARKS: C. sommelieri is one of the most unusual species of Coridromius due to the corkscrewed male left paramere and reciprocal corkscrewed paragenital opening on the female. When dissected, this female copulatory tube is shown to be thinly sclerotized, at the apex of which one finds the puncture wound caused by the male genitalia (fig. 20B). Specimens of sommelieri were initially thought to belong to zetteli (e.g., Tatarnic et al., 2006), but closer examination of the male genitalia has revealed that they are in fact separate species. This species also appears similar to testaceous , except females of the latter lack any visible external paragenitalia. The male of testaceous is unknown.

HOST: Unknown.

DISTRIBUTION: Collected from Tenompok, Sabah (map 5).

PARATYPES: MALAYSIA: Sabah: Tenompok , 6.01777 ° N 116.48555 ° E, 637 m, 10–19 Feb 1959, T. C. Maa, 13 ( AMNH _ PBI 00041571 ), 1♀ ( AMNH _ PBI 00041570 ) ( BPBM) ; 13 Feb 1959, T.C. Maa, 1♀ ( AMNH _ PBI 00041572 ) ( BPBM) ; 15 Feb 1959, T.C. Maa, 2♀ ( AMNH _ PBI 00041568 , AMNH _ PBI 00041569 ) ( BPBM) .