Arkaditilla depressicornis (Mickel, 1935) Okayasu, 2021

Okayasu, Juriya, 2021, A new velvet ant genus Arkaditilla (Hymenoptera, Mutillidae, Trogaspidiini) from the Oriental Region, with review of species, Journal of Hymenoptera Research 84, pp. 145-168 : 145

publication ID	https://dx.doi.org/10.3897/jhr.84.68709
publication LSID	lsid:zoobank.org:pub:5F83EC63-7C79-47FD-BD29-E7A2B9328518
persistent identifier	https://treatment.plazi.org/id/08E714DB-16BD-5B91-AF5E-BE4F2C2E111A
treatment provided by	Journal of Hymenoptera Research by Pensoft
scientific name	Arkaditilla depressicornis (Mickel, 1935)
status	comb. nov.

Treatment

Arkaditilla depressicornis (Mickel, 1935) comb. nov.

Figures 3 View Figures 1–6 , 4 View Figures 1–6 , 14 View Figures 13–18 , 20 View Figures 19–36 , 27 View Figures 19–36 , 28 View Figures 19–36 , 39 View Figures 37–48 , 40 View Figures 37–48 , 52-54 View Figures 49–66 , 68 View Figures 67–72 , 74 View Figure 73–76

Timulla (Trogaspidia) depressicornis Mickel, 1935: 264, ♂, holotype ♂ (Sandakan, [Sabah], Borneo, [Malaysia]) [National Museum of Natural History, Washington D.C., USA]; Mickel 1937: 449, ♂.

Krombeinidia depressicornis : Lelej 1996a: 11; 2005: 66; Lo Cascio 2015: 550; Pagliano et al. 2020: 251.

Petersenidia depressicornis : Lelej 1996b: 94, ♂.

Diagnosis.

Male. Clypeus dorsally elevated, sloping ventrally. Mandible with sharp subapical and large inner subbasal teeth (Fig. 14 View Figures 13–18 ), ventrally deeply excised with large basal tooth (Fig. 20 View Figures 19–36 ). Scape ventral carinae divergent apically (Fig. 27 View Figures 19–36 ), densely punctate between them; F1 apical 1/3, F2-F3, F2-F4, or F2-F5 whitish yellow on ventral half, F5 or F5-F6 with ventral whitish yellow patch, F6-F11 or F7-F11 with ventral dark brown patch; F1 strongly depressed, F1 height ~0.8 × pedicel diameter (Fig. 28 View Figures 19–36 ). T3 orange (Fig. 4 View Figures 1–6 ); cuspis weakly widened on posterior 1/3 with rounded apex (Figs 52 View Figures 49–66 , 68 View Figures 67–72 ); digitus posteriorly slender stick-like (Fig. 39 View Figures 37–48 ); paracuspis absent (Fig. 68 View Figures 67–72 ); penis valve weakly expanded ventrally (Figs 53 View Figures 49–66 , 54 View Figures 49–66 ). Female. Unknown.

Material examined.

3♂. Malaysia: Negeri Sembilan: Pasoh Forest Reserve, 31.III.1993, K. Konishi leg. [1♂ NARO]; Pasoh Forest Reserve , 26.XI-3.XII.1993, K. Maeto leg., fine Malaise trap, plot 6 [1♂ FRIM]; Pahang: Cameron Highland, 19 mile, 15.III.2006, K. Takasuka leg. [1♂ EUM] .

Identification source.

Keyed using Mickel (1935) and compared with the original description. Mickel (1935) described this species as having the F1 apical 1/2 and F2-F4 ventrally "pale ferruginous", but the specimens examined herein have the F2-F3, F2-F4, or F2-F5 entirely whitish yellow ventrally.

Distribution.

Malaysia: Negeri Sembilan*, Pahang*, Sabah, Sarawak ( Mickel 1935, 1937; Lelej 1996b).

Remarks.

This species was originally described from Borneo ( Mickel 1935) and is newly recorded from Peninsular Malaysia. In this study, this species was primarily recognized by having the F2-F4 ventrally entirely yellow as included in Mickel’s (1935) key.