Two new genera of Oriental xyleborine ambrosia beetles (Coleoptera, Curculionidae: Scolytinae) Author Cognato, Anthony I. Author Smith, Sarah M. Author Beaver, Roger A. text Zootaxa 2020 2020-01-17 4722 6 540 554 journal article 24312 10.11646/zootaxa.4722.6.2 fcb90f8f-1c93-4d87-a223-599264ed5642 1175-5326 3610918 4ADBCE90-97D2-4A34-BCDC-5E207D8EDF0D Key to Tricosa species (females only) 1 Elytral discal striae and interstriae clearly uniseriate punctate.................................................. 2 - Elytral discal striae and interstriae punctures confused........................................................ 4 2 Pronotum anterior margin unarmed, protibia broad, appearing distinctly triangular......................... jacula sp. n. - Pronotum anterior margin serrate, protibia narrow, appearing obliquely triangular.................................. 3 3 Smaller size, 2.40–2.50 mm and declivial interstriae moderately setose........................... metacuneola (Eggers) - Larger size, 3.80 mm and declivital striae and interstriae densely setose.......................... mangoensis (Schedl) 4 Pronotum anterior margin armed by a row of six serrations. Smaller, 2.70–3.10 mm long, and stouter 2.50–2.70 times as long as wide................................................................................ cattienensis sp. n. - Pronotum anterior margin armed by a row of eight serrations. Larger, 3.20–3.40 mm long and more slender, 2.83–2.91 times as long as wide.......................................................................... indochinensis sp. n.