Cardiacephala guttata ( Walker, 1852 )

Ferro, Gustavo Borges & Marshall, Stephen A., 2018, A revision of the Neotropical ant-like genus Cardiacephala Macquart, including Plocoscelus Enderlein syn. nov. (Diptera: Micropezidae, Taeniapterinae), Zootaxa 4429 (3), pp. 401-458 : 427-429

Cardiacephala guttata ( Walker, 1852)

( Figs. 40–42 )

Musca longipes Fabricius 1787: 348 (preoccupied, Scopoli 1763: 336).

Cardiacephala triluminata Cresson 1930: 330 (nom. nov. for Musca longipes).

Calobata guttata Walker 1852: 394 .

Cardiacephala guttata ( Walker, 1852) , Steyskal 1967: 79.

Description: Body length 9 mm, wing 5 mm. Palpus dark brown. Clypeus dark brown, shiny. First flagellomere dark brown, covered with pale microsetulae. Fronto-orbital plates and frontal vitta dark brown. Paracephalon and epicephalon brown, shiny. Frontal vitta with a dark brown stripe extending to vertex. Row of katepisternal setae brownish, some of them shiny gold. Fore leg dark brown. Mid and hind femora brown, yellowish at apical third. Fore tarsus dark brown with gold/whitish pubescence ventrally at base of tarsomere one. Oviscape dark brown, apex yellow. Epandrium brown.

Head: Palpus broadened basally and gradually tapering to apex. Clypeus short, length less than half of width. Two frontal setae. Inner vertical seta insertion flat, without tubercle. Paracephalon swollen and conical, extending beyond the vertex and without clearly divisions with epicephalon. Vertex flattened. Black supracervical setae sparse, weak.

Thorax: Mesonotum whitish pruinose with sparse pale setulae. Scutellum upturned, triangular. Femora with sparse black setulae. Mid and hind tibia flattened, but sulcus on outer face weak. Wing stigmatal and discal band delimited, apical band darkened with three preapical hyaline rounded spots. Crossvein r-m with small dark spot. R4+5 and M1+2 meeting at the wing margin. A1+CuA2 as long as CuA2. Female cervical sclerite smooth, without swelling.

Abdomen: Tergites with brownish setulae. Female abdomen: Oviscape with sparse pale microsetulae. Single spermathecal duct uniformly thick, ending in a peanut-like cylindrical spermatheca. Paired spermathecal duct divided into a narrow basal half and a broader distal half. Paired spermathecal duct stems thin and smooth on basal third, followed by a small rounded swelling and a small appendix ( Fig. 41 ). Paired spermathecae striate and saclike (distally swollen and tapered basally), deeply invaginated from apex to base. Male abdomen: Ejaculatory apodeme about same length as epandrium and with a broad blade, wider than sperm pump ( Fig. 42 ). Phallapodeme extending to anterior limit of hypandrium. Distiphallus short, about same length as epandrium. Distiphallus ending in a phallic bulb, phallic bulb subequal in length and width.

Type material: Holotype (1 specimen, abdomen missing, sex unkown, BMNH, not examined): BRAZIL. No information about collector and date.

Material examined: BRAZIL. Paraíba, Forest near Areia, 630 m, 24.I.1981, Ginter Ekis (2 ♀, 3 ♂, CMNH); COLOMBIA. Magdalena, Tayrona Zaino, 50 m, 11º20’1” N 74º2’1” W, 20–29.IX.2000, R. Henriquez. (1 ♀, IAVH); Magdalena, Tayrona Zaino, 50 m, 11º20’1” N 74º2’1” W, 14–30.VIII.2000, R. Henriquez (1 ♀, IAVH); Magdalena, Tayrona Zaino, 50 m, 11º20’1” N 74º2’1” W, 29.V–14.VI.2000, R. Henriquez (1 ♂, IAVH); FRENCH GUIANA. Cayenne, Comm. Regina, Kaw Mt., Relais de Patawa, 4º33’N 52º10’W, 300m, malaise, I.2006, J. A. Cerda (1 ♀, DEBU 00280286); Montsinery, Carrefour Du Gallion, “Emerald Jungle”, Gelbschale, 5–16.XII.2003, M. Kotrba (3 ♀, DEBU); Rorota Wasserspeicher, Nahe Cayenne, 26.XII.2002, M. Kotrba (4 ♀, DEBU); PANAMA. Canal Zone, Summit, XI.1946, N. L. H. Krauss (1 ♂, USNM); TRINIDAD. Saint George Co., Curepe, 10º38’0” N 61º24’0 W, malaise, 1978, F. D. Bennett (1 ♀, DEBU 00151226); Tabaquite, 7.I.1903, H. D. Chipman (2 ♀, CMNH); VENEZUELA. Sucre, Puy-Puy, 32km E Carupano, plantations & 2º forest near beach, sweep, 31.III–2.IV.1988, M. von Tschirnhaus (1 ♀, 1 ♂, DEBU 0 0 256925, DEBU 00256926); Sucre, El Rincón, nr. Road between Carúpano & El Piler, along Rio El Rincón valley, 8–9.IX.1998, M. von Tschirnhaus (1 ♀, DEBU 00256943).

Distribution: Brazil, Colombia, French Guiana, Guiana, Surinam, Panama, Trinidad, Venezuela.

Comments: The holotype abdomen was missing when Steyskal (1967) examined it. C. guttata has a swollen paracephalon with no clear division from the epicephalon, and has a dark apical wing band with three preapical hyaline rounded spots. Illustrations of head, wing and genitalia of this species can also be found in Albuquerque (1989: 21, Figs. 2–8 ).

Figures

FIGURES 40–42. Cardiacephala guttata. 40, female, dorsal view; 41, female genitalia, ventral view; 42, male genitalia, lateral view.

FIGURES 2–4. Cardiacephala acuminata. 2, female, anterodorsal view; 3, female, lateral view; 4, female genitalia, ventral view.

FIGURES 5–8. Cardiacephala aeruginosa. 5, female, lateral view; 6, female genitalia, ventral view; 7, male, dorsal view; 8, male genitalia, lateral view.