Coridromius crassus, 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 : 50-52

publication ID


persistent identifier

treatment provided by


scientific name

Coridromius crassus

new species

Coridromius crassus , new species Figures 4, 6, 10A–D, map 3

HOLOTYPE: Male: INDONESIA: Sulawesi Utara: Dumoga-Bone National Park, Gunung Ambang Forest Reserve , near Kotamobagu , 0.55 ° N 123.98333 ° E, 1200 m, 18 Feb 1985, Royal Entomological Society of London : Project Wallace ( AMNH _ PBI 00192740 View Materials ) ( BMNH). GoogleMaps

DIAGNOSIS: Distinguished by the following characters: broadly flared hemelytra; bilobed proepisternum; thick, sharply angled left paramere; right paramere U-shaped when viewed from above; males with patch of dense conelike setae on the left posterior margins of abdominal segments VII and VIII. C. crassus is similar to declivipennis , nakatanii , and pteraulos but is much wider across the pronotum and hemelytra, and differs in coloration. The left paramere is also much thicker than in the other three species.

DESCRIPTION: COLORATION (figs. 4, 6): Mostly orange-brown and yellow with darker brown markings. Head: Orange-brown, becoming more yellow on frons; vittae on frons dark brown; lateral and medial swellings on vertex yellow, merging with yellow ocular and posterior margins; clypeus yellow with one medial brown spot and two lateral brown stripes; gena, mandibular and maxillary plates yellow to orange-brown; buccula yellow, dark brown basally; labrum brown, labium yellow, brown apically. Antenna: AI dark brown, apices yellow; AII light orangebrown with pale subapical annulation adjacent to dark brown apical annulation; AIII and AIV dark brown, yellow basally. Thorax: Pronotal collar yellow; pronotum mostly orange-brown with faint yellow medial stripe and margins, two dark brown spots on anterior margin behind eyes, two larger brown spots above callar region, sometimes fused together, anterior of humeral angles sometimes with faint dark brown spots, submarginal region of humeral angles sometimes yellowed; mesoscutum orange-brown, dark brown medially; scutellum orangebrown with medial stripe, apex and sides yellow; thoracic pleura orange-brown to dark brown, posterior margins yellowed; anterior lobe of proepisternum yellow. Hemelytra: Orange-brown with dark brown marking halfway down (except on clavus), slightly yellow along claval commissure and lateral margins; fascia above cuneus yellow; cuneus orange-brown; membrane light brown with dark brown veins. Abdomen: Orange-brown with dark brown and yellow markings along dorsolateral margins. Legs: All coxae pale yellow; pro- and mesofemora pale yellow, brown apically, metafemur yellow to orangebrown with 9 diagonal dark brown stripes on outer surface, lateroapical depression dark brown; tibiae yellow, metatibia sometimes brown. SURFACE AND VESTITURE (figs. 4, 6): Minor swelling on vertex finely punctate; pronotum, propleuron, metepimeron, and scutellum finely punctate; hemelytra and cuneus irregularly punctate; head and dorsum clothed in long, white, decum- bent setae; male abdomen with patch of dense, conelike setae on the left posteroventral margins of segments VII and VIII (similar to pteraulos , figs. 16E–F). STRUC- TURE (figs. 4, 6): Head: Frons roundly tumescent medially, merging with minor swelling on vertex; vertex with two minor swellings adjacent to eyes; posterior margin of head rounded, somewhat carinate. Thorax: Pronotum broad and steep, posteriorly rounded, lateral margins carinate, anterolateral margins depressed, not upturned, submarginal region of humeral angles excavate, posterior margin steeply declivent, callar region weakly present; proepisternum bilobed; posterior margin of metepimeron in the form of a broad, rounded lobe; metanotum prominent and flared; scutellum somewhat flattened. Hemelytra: Costal margin greatly flared medially, with raised L-shaped fascia at apex. Legs: Metatibial spines long and thick. Abdomen: Posterolateral margin of abdominal sternite II sharply angular. MALE GENITALIA (figs. 10A–D): Right paramere broad and rounded with thumblike lobe, appears Ushaped when viewed dorsally (figs. 10B–D); left paramere thick and elongate, sharply angled basally, then evenly curved and tapering to apex with a slight twist along its axis, curved at tip (fig. 10A); pygophore with long mesal suture and long fingerlike ventral apical process. FEMALE PARA- GENITALIA: Abdominal tergite II asymmetrical, right lateral margin weakly tumescent, posterior margin sulcate.

ETYMOLOGY: The name crassus , meaning ‘‘thick’’ or ‘‘stout’’ in Latin, reflects the broad body of this insect.

HOST: No host records.

DISTRIBUTION: Known from northern Sulawesi (map 3).

PARATYPES: INDONESIA: Sulawesi Utara: Dumoga-Bone National Park, Danau Mooat, 0.75694 ° N 124.4625 ° E, 1300 m, May 1985, Royal Entomological Society of London: Project Wallace, 13 (AMNH_PBI 00177945) (BMNH). Dumoga-Bone National Park, Gunung Ambang Forest Reserve, near Kotamobagu, 0.55 ° N 123.98333 ° E, 1200 m, 18 Feb 1985, Royal Entomological Society of London: Project Wallace, 33 (AMNH_ PBI 00177946, AMNH_PBI 00192742–AMNH_

PBI 00192743), 2♀ (AMNH_PBI 00177947, AMNH_PBI 00177948) (BMNH).


American Museum of Natural History