Coptoborus coartatus (Sampson, 1921) Smith & Cognato, 2021

Smith, Sarah M. & Cognato, Anthony I., 2021, A revision of the Neotropical genus Coptoborus Hopkins (Coleoptera, Curculionidae, Scolytinae, Xyleborini), ZooKeys 1044, pp. 609-720 : 609

Coptoborus coartatus (Sampson, 1921) comb. nov. Figure 4G-I, O

Xyleborus coartatus Sampson, 1921: 32.

Theoborus coartatus (Sampson): Wood 1982: 776.

Xyleborus artecuneolus Schedl, 1939: 14: Synonymy: Wood 1966: 31.

Type material.

Holotype Xyleborus coartatus (NHMUK), examined.

New records.

Ecuador: Los Ríos Prov., Canton La Clementina, Samama Nature Reserve, 01°38.852'S, 79°19.867'W, 381-430 m, 13-15.v.2015, Cognato, Smith, Osborn, Martinez et al., sample EC 13, ex 4 cm diameter hanging liana (MSUC, 4; PUCE, 1); Napo Prov. [= Orellana Prov.], Tiputini Biodiversity Station, 00°37'55"S, 076°08'39"W, 220-250 m, June 1998, T.L. Erwin et al. collectors, insecticidal fogging, terra firme forest, trans[ect] 2, sta[tion] 1, Erwin lot #1810 (ICB, 1). Peru: Madre de Dios Dept., Los Amigos Biological Station, 12°34.9'S, 70°6.04'W, Smith, Hulcr, 26.iv.-2.v.2008, sample Peru 40b, 4 cm twig (MSUC, 3); as previous except: CM2, GPS 12.4492°S, 70.2517°W, Smith, Hulcr, 17-18.v.2008, sample Peru 88c 3 cm diameter branch (MSUC, 7).

Diagnosis.

2.7-2.9 mm (mean = 2.82 mm; n = 5), 2.33-2.55 × as long as wide. This species is distinguished by the elytral apex broadly rounded and entire, posterolateral margin continuously and smoothly carinate to interstriae 6, extended posteriad and appearing shelf-like, and declivity moderately impressed along interstriae 2.

Similar species.

C. ricini .

Distribution.

Brazil (Bahia, Minas Gerais), Colombia (Cundinamarca, Tolima, Valle de Cauca), Costa Rica ( Limón, San José), Ecuador* (Los Ríos, Orellana), Mexico (Chiapas), Panama ( Chiriquí), Peru (Madre de Dios), Trinidad.

Biology.

This species is known from Mimosa ( Fabaceae ), Theobroma cacao , and an unidentified Theobroma ( Malvaceae ) ( Wood and Bright 1992). Wood (1982) reported collecting the species from boles of small trees 8-20 cm in diameter but has been collected in smaller 3-4 cm diameter branches in Ecuador and Peru. It is considered a minor pest of Theobroma cacao ( Wood 2007).

Remarks.

Wood (2007) reports this species as introduced into Africa but published reports were not located. This erroneous record appears to be due to a reference to the species in the description of the African species Xyleborus ovatus Eggers (1932: 298) in which Eggers compared the form of X. ovatus to that of the South American species X. coartatus but did not state that the latter species occurred in Africa.

Figures

Figure 4. Dorsal, lateral, frontal and declivital view of Coptoborus catulus 2.2 mm (A-C, M), C. chica holotype, 2.0 mm (D-F, N), C. coartatus 2.7 - 2.9 mm (G-I, O), C. cracens 1.8 - 2.0 mm (J-L, P). All photographs by SMS.