Cyamops femoctenidius, Grimaldi, 2009

Grimaldi, David A., 2009, The Asteioinea of Fiji (Insecta: Diptera: Periscelididae, Asteiidae, Xenasteiidae), American Museum Novitates 3671, pp. 1-60 : 26-27

Cyamops femoctenidius , new species

Figure 15

DIAGNOSIS: Face with peristomal setae, slight vertical ridge; arista with 5–6 basal branches bifurcate (secondary branches very small); legs almost entirely yellow; forefemur with ctenidium, mesocoxa with small comb of thick setae on posterior margin; male terminalia with V-shaped hypandrium and aedeagal apodemes, left surstylus long, digitate, nearly straight, length 4.8X greatest width.

DESCRIPTION: Similar to the description given for C. femobrunneus with the exception of the following features: frons darker, more extensive velvety black; pedicel and basal flagellomere with dark infuscation; proximal 4–5 dorsal branches of arista with small secondary branches; face with fewer parafacial setae, only 1 larger and 2 minute pairs; silvery microtomentum covers most of face and is more extensive on frontal orbital plates; microtomentum very sparse on fore coxae, midcoxae with row (‘‘comb’’) of thick setae on posterior margin; legs virtually entirely yellow; forefemur with row of ca. 7 small, spinulelike setae on mesal surface of distal half; hind femur with ventral row ca. 10 fine, light, stiff setae; scutum deep, dark brown; anterior portion of male scutum with some polished areas; tergite VII of male with left lobe pointed (not blunt); left surstylus long and slender, but straight, right surstylus short and folded.

TYPES: Holotype, male: Taveuni : Cakaudrove Prov., 5.6 km SE Tavuki Vlg, Devo Peak 1187 m, 31.X–14.X1.2002, Malaise 1, coll. E. Schlinger and M. Tokota’a, 16.843 ° S, 179.965 ° W, FBA056938 (not dissected) . Paratypes: 34 males, same locality, dates: 2– 10.X.2002, 24–31.X.2002, 31.X–14.XI.2002, 14–21.XI.2002. 3 males dissected (nos. 60, 65, 66) . Holotype and some paratypes in BPBM, other paratypes in AMNH .

ETYMOLOGY: From femur and ctenidium, in reference to the row of fine, thornlike setae (ctenidium) on the forefemur. This feature occurs sporadically in the genus.

COMMENTS: This species appears close to two Australian species and a Papuan one, based on the peristomal setae, forefemoral ctenidium, the bifurcate aristal branches, and some aspects of the male genitalia ( Baptista and Mathis, 2000; Khoo, 1984). These are Cyamops papuensis Baptista and Mathis (from Papua New Guinea), C. claudiensis Khoo (from Queensland, Australia), and the comb of mescoxal setae is similar to that of C. pectinatus Khoo from eastern Australia.

Figures

Fig. 15. Structures of Fiji Cyamops spp. A. Forefemoral ctenidium of C. femoctenidius. B. Male terminalia of C. femoctenidius (posterior view). C. Male terminalia of C. fiji (posterolateral view).