Chaetopodella demeteri, Papp, 2008

Papp, L., 2008, Afrotropical Species Of Chaetopodella Duda (Diptera: Sphaeroceridae), Acta Zoologica Academiae Scientiarum Hungaricae 54 (3), pp. 235-255 : 249-250

Chaetopodella demeteri sp. n.

( Figs 41–46 )

Holotype male ( HNHM): Nigeria, Yanguikari Reserve , Wikki – Aug. 14, 1978, leg. A. DEMETER, No. 18 [hippo dung from the previous night].

Paratypes: Nigeria, Yangui [correctly: Yankari] Reserve, Wikki : 1 male: same data . 1 male, 1 female: ibid ., Aug. 14, No. 16 [fresh buffalo dung]; 1 female: ibid ., No. 20 [fresh buffalo dung]; 2 males 1 female: ibid ., Aug. 15, No. 22 [buffalo dung from the previous night]. One male of No. 22 was originally severely damaged by the pin; now wings are preserved between two small pieces of cover glass, abdomen and genitalia (dissected) in a plastic microvial with glycerol, and the rest of the body is also in another microvial with glycerol.

Measurements in mm: body length 1.54 (holotype), 1.32–1.38 (paratype males), 1.81–1.87 (paratypes females), wing length 1.37 (holotype), 1.15–1.25 (paratype males), 1.45–1.59 (paratype females), wing width 0.47 (holotype), 0.44–0.46 (paratype males), 0.54 –0.61 (paratype females).

Head: Silvery spots or stripes around bases of macrochaetae. Frons dark brown, at most anterior 1/5 reddish. Face dirty yellow, gena greyish yellow; 3 ifr; upper setae slightly longer; anterior ors thin 0.09 mm, posterior ors thick 0.15–0.155 mm long. Eye short oval, its longest diameter (0.27 mm) more than 3.0 times as long as gena below eye (0.08 mm). Antenna dark brown. Arista long, 4.0–4.4 times as long as antenna, shortly ciliate.

Thorax: Mesonotal colour dominated by velvety black, i.e. silvery microtomentum only around setal bases and this silvery colour confluent only in 4 short stripes, which terminate at the level of posterior notopleural seta. Six rows of ac microsetae in front of suture, 3 dc shortening anteriorad. Two kepst, posterior one very long: 0.285 mm on holotype, 0.26 mm on a male paratype. Scutellum velvety black, wider than long, 0.285 mm broad and 0.24 mm long; 2 pairs of scutellar setae rather long, apical one 0.45 mm, lateral one 0.25 mm, scutellum (paratype male).

Wing: Milky, veins white; C not extended beyond apex of R 4+5, first section with much longer setae than those of second and third sections; R 4+5 distinctly bent up to C; C-index = 0.40/ 0.25 mm = 1.6 (1.55 on another male), R-M – dM-Cu: dM-Cu = 3.27; lower corner of the discal cell angulate with a short vein appendage, or, in some specimens rounded without vein appendage; alula broad and rounded; halter with reddish yellow knob and yellow stem.

Legs: Yellowish brown, fore coxa ochreous; male tarsi darker brown. Fore femur with 2 dorsal setae on apical half. Male fore tibia not thickened, fore tarsus slightly thickened and tarsomeres 2–5 even flattened. Fore coxa with 5–6 distinct setae and without long light (whitish) hairs. Mid trochanter with a thick 0.14 mm long seta laterally. Mid femur with a ventral row of 3 setae on basal 1/ 5 in male.

Abdomen: Male sternite 5 rather similar to that of Ch. aethiopica . However, caudal process ( Fig. 41 ) short curved with shorter thorns. Medial platelet with short pilosity. Ventral plate of subepandrial sclerite ( Fig. 42 ) with 2 pairs of long laterally curved thorn-like seta, the lateral one not thicker than the medial pair.

Surstylus ( Figs 43–44 ) laterally on outer surface with several setae incl. on inner edge. Epiphallus ( Fig. 45 ) smallest in the species group, subtriangular in profile, postgonite ( Fig. 45 ) strongly narrowed subapically, apex almost sharp. Phallapodeme somewhat smaller than in the related species. Apical part of the paired dorsal process of distiphallus with short and thick fork ( Figs 45–46 ), much shorter than those of Ch. nigeriae ( Figs 39–40 ).

Female abdominal terga velvety black, sternites 3–5 (6) pale (yellowish), lateral seta on tergite 6 0.22 mm long. Cerci brown, ca. 0.10 mm long, longest cercal setae 0.11–0.12 mm.

Etymology. The species was named to the honour of Dr. ANDRÁS DEMETER (formerly the curator of the collection of mammals in the HNHM), who collected the type series of the three new species above.

Specimens with rounded discal cell. There are specimens in all the three Chaetopodella s.str. species described here with rounded discal cell. I made some figures on such a male of Ch. aethiopica ( Figs 47–51 ) in order to demonstrate that these are not different species. The differences one can detect if compared to Figs 27–33 are individual variations, or, slight differences caused by the slightly different positioning of the given genital parts.

Figures

Figs 41–46. Chaetopodella (Ch.) demeteri sp. n., paratype male, genitalia. 41 = caudal process of sternite 5; 42 = subanal plate, caudal view; 43–44 = surstylus: 43 = in the broadest (sublateral) view, 44 = in ventral view; 45= phallic complex (inner genitalia), lateral view, 46 = apical part of the dorsal

Figs 34–40. Chaetopodella (Ch.) nigeriae sp. n., paratype male, genitalia. 34 = pregenital sclerites, subventral-subcaudal view, 35 = 5th sternite, ventral view, 36 = subanal plate, caudal view; 37–38 = surstylus: 36 = in the broadest (sublateral) view, 38 = in ventral view; 39 = phallic complex (inner genitalia), lateral view, 40 = apical part of the dorsal process of distiphallus, broadest view. Scales:

Figs 47–51. Chaetopodella (Ch.) aethiopica sp. n., genitalia of a paratype male with rounded discal cell. 47 = pregenital sclerites, subventral-subcaudal view, 48 = subanal plate, caudal view; 49 = postgonite and epiphallus, lateral view, 50 = surstylus, broadest (sublateral) view, 51 = apical part of

Figs 27–33. Chaetopodella (Ch.) aethiopica sp.n., paratype male, genitalia.27 = pregenital sclerites, subventral-subcaudal view, 28 = 5th sternite, ventral view, 29 = subanal plate, caudal view; 30–31 = surstylus: 30 = in the broadest (sublateral) view, 31 = in ventral view; 32 = phallic complex (inner genitalia), lateral view, 33 = apical part of the dorsal process of distiphallus, broadest view. Scales: