Ctonoxylon festivum Schedl, 1941

Jordal, Bjarte H., 2024, An integrated taxonomic revision of Ctonoxylon (Coleoptera, Curculionidae, Scolytinae) reveals new Malagasy species originating from multiple recent colonisations of the island, ZooKeys 1203, pp. 95-130 : 95-130

publication ID	https://doi.org/ 10.3897/zookeys.1203.123757
publication LSID	lsid:zoobank.org:pub:6FE93D4B-8104-45F4-850A-C1B78CA10A9D
DOI	https://doi.org/10.5281/zenodo.11373300
persistent identifier	https://treatment.plazi.org/id/9409D707-6C8A-5C2D-B228-7171B27904B9
treatment provided by	ZooKeys by Pensoft
scientific name	Ctonoxylon festivum Schedl
status

Treatment

Ctonoxylon festivum Schedl View in CoL

Figs 13 View Figures 12–20 , 14 View Figures 12–20 , 16 View Figures 12–20 , 17 View Figures 12–20 , 19 View Figures 12–20 , 20 View Figures 12–20

Ctonoxylon festivum Schedl, 1941: 389 View in CoL .

Ctonoxylon dentigerum Schedl, 1941: 388 View in CoL , syn. nov.

Type material.

Holotype, female: Kamerun, Soppo , 800 m, XII 1912, v. Rothkirch S. G . Holotype of C. dentigerum , male: Spanish Guinea [ Equatorial Guinea]. [both in NHMW] .

Diagnosis.

Length 3.1–3.2 mm. 2.1–2.2 × as long as broad; colour brown. Upper and lower eye parts separated by more than width of upper part; pronotal eye scraper acutely pointed; a sharp carina running from scraper to procoxa, without associated groove or propleural pit; scutellar shield at level with elytra; striae slightly impressed; main interstrial setae and ground vestiture similar and evenly distributed, each seta a little shorter than width of an interstriae; elytral apex slightly emarginated; resting position of mesotibiae marked on metaventrite.

Distribution.

Cameroon, Equatorial Guinea, Tanzania (new country record).

New record.

Tanzania, Morogoro, Kimboza Forest Reserve [GIS: - 7.023, 37.806], S. S. Madoffe, leg. [1, NHMUK].

Comments.

Using the principle of first reviser the name festivum is given priority as there is nothing particularly dentigerous about this species. Differences noted between the holotypes of C. dentigerum and C. festivum are likely due to sexual dimorphism, with the male dentigerum having the anterior pair of teeth on pronotum a little behind the anterior margin and in festivum along the front margin. Minor variation in the length of elytral setae can also be due to dimorphism, or simply due to variation between individuals as often observed in similar species. Biology unknown, except collected in low- to mid-altitude rainforest.