Basilia ruiae Graciolli, sp. nov. (Figs. 2, 5, 7, 9)

Basilia sp., Graciolli et al., 2002: 403 (record).

Description. Female. Head – Vertex with 15 setae near anterior margin, between eyes. Anterior margin of each genae with 7 to 9 setae. Post­gena with 2 setae. Eyes with 2 lenses on a pigmented base. Thorax – Much wider than long. Posterior part of mesonotum with a medial dorsal process. Ten to 11 notopleural setae. Thoracic ctenidium with 20 spines. Tibiae scalpel­shaped, with 4 conspicuous ventro­distal rows of setae, the proximal being the least conspicuous (Fig. 2). Femora without sensory hairs (Fig. 2). Sternal plate wider than long. Abdomen – Tergite I wider than long. Tergite II longitudinally divided; each half ending posteriorly as a lobe with 8­9 long, thick setae and 7 spine­like setae. Anal segment nearly parallel­sided with numerous long, thick setae on each side of mid­line. Dorsal connexivum with both long and medium pustulate setae between tergite II and anal segment (Fig. 5). Sternite I with 5 setae. Sternite II wider than long, ctenidium with 70­72 spines. Sternites V and VI divided. Sternite V divided into 2 elliptical sclerites, each with 15 setae; 6 setae between sclerites. Sternite VI with inner side longer than outer side. Sternite VII with undivided and unpigmented discal area (Fig. 7). Genital plate small, with 2 setae. Anal sclerite with 2 setae. Adanal plates triangular with rounded posterior margin; each plate bearing 4 setae.

Male. Head – As in female. Thorax – Much wider than long. Posterior mesonotum with medial­dorsal process. Ten to 11 notopleural setae. Thoracic ctenidium with 24 spines. Femora II and III with bare anterior surface lacking sensory hairs near base. Tibiae scalpel­shaped, bearing 4 conspicuous ventro­distal rows of setae, the proximal of which is least conspicuous. Abdomen – Tergites I, II and VII with discal setae. Sternite II wider than long, ctenidium with 60 spines. Sternite V with 2 rows of 15 and 12 spine­like setae. Genitalia with curved aedeagal apodeme (Fig. 9). Aedeagus small, parallel­sided, serrated dorsally and ventrally. Phallobase with 2 setae. Parameres with rounded base, the apical end of which bears 2 patches of 6 and 4 setae anterior and posterior, respectively.

Type material: Holotype, female ex. Myotis ruber (E. Geoffroy, 1806), BRAZIL: Rio Grande do Sul: Maquiné, Estação de Pesquisa e Produção de Maquiné da Fundação de Pesquisa Agropecuária da Secretaria do Estado do Rio Grande do Sul (FEPAGRO) (29º40´30´´S, 50º12´26´´W), 09.i.2001, (A.M. Rui, leg.), (DZUP). Paratypes: female (in slide), same data as the holotype (DZUP); female (on slide) ex. M. ruber, BRAZIL: São Paulo: Capão Bonito, Parque Estadual Intervales (24º12´­ 24º25´S, 48º03´­ 48º30´W), 16.iii.1999, (F.C. Passos & W.A. Pedro, leg.) (DZUP); female and male (on slide) ex. M. ruber, São Paulo: Ribeirão Grande, CC Nassau, córrego Fernandes (24º08´S, 48º19´W), 14.x.2002, (J. Quadros, leg.); female ex. M. ruber, Paraná: Fazenda Rio Grande, Fazenda Gralha Azul (25º39´33´´S, 49º16´28´´W), 11.v.2002, (G. Bianconi, leg.), (DZUP).

Etymology. The specific epithet gives homage to Ana Maria Rui, a Brazilian researcher who has greatly inspired studies of bat flies in southern Brazil.