Oedichirus sparsipennis Bernhauer

Herman, Lee H., 2013, Revision Of The New World Species Of Oedichirus (Coleoptera: Staphylinidae: Paederinae: Pinophilini: Procirrina), Bulletin of the American Museum of Natural History 2013 (375), pp. 1-137 : 116-119

Oedichirus sparsipennis Bernhauer

Figures 40 , 206–207

Oedichirus sparsipennis Bernhauer, 1927: 155 .

— Scheerpeltz, 1933: 1218 (catalog). — Blackwelder, 1944: 131 (checklist).

TYPE MATERIAL: Syntypes: Two females. Bernhauer reported that specimens of the species from ‘‘ Brasilien: S. Catharina , Theresopolis’’ were deposited in his collection and that of the ‘‘Deutschen entomol. Institutes in Berlin-Dahlem,’’ but he neither selected a type nor indicated the number of specimens studied. One specimen was found in the Bernhauer collection in Chicago ( FMNH) and another in the collection in Müncheberg ( SDEI), the present home of the collections formerly in Berlin-Dahlem. The species is part of a cluster of like species and as no type was designated, a lectotype is designated to stabilize the name.

LECTOTYPE: Designated here. Female. ‘‘S. Catharina Theresopolis Fruhstorfer 1887 / Oedichirus sparsipennis Bernh Cotypus. don. Mus. Germ./ Chicago NHMus M.Bernhauer Collection/ Lectotype Oedichirus sparsipennis Bernhauer des. L. Herman, 2011.’’ Deposited in the Field Museum of Natural History, Chicago. (Left antennomeres 3–11 are missing.)

PARALECTOTYPE: Female. ‘‘S. Catharina Theresopolis Fruhstorfer 1887 / Syntypus / sparsipennis Bhnr. /Bernhauer det./coll. DEI Müncheberg.’’ Deposited in the Senckenberg Deutsches Entomologisches Institut, Müncheberg.

TYPE LOCALITY: Brazil: Santa Catharina: Theresopolis , at about 27 ° 439S, 48 ° 559W. (The name of the town given on the label and in the original publication is also referred to as Teresopolis or Terezopolis, but is now known as Queçaba, Quiçaba, or Quicaba [from www.fallingrain. com].)

DIAGNOSIS: This species, known only by female specimens, is one among six species with bicolored legs (fig. 2) and a median point on tergum VIII. Included are O. brunneus , O. bullaglaber , O. bullahirtus , O. clavulus , O. geniculatus , and O. sparsipennis . Both O. bullaglaber and O. bullahirtus have a median point on tergum III that O. sparsipennis lacks. The lateroapical process of IX for both O. clavulus (LLaP/L9 5 2.2–2.3) and O. geniculatus (LLaP/L9 5 2.8–2.9) is more than twice as long as the midbasal length of tergum IX; that of O. sparsipennis is about two thirds longer (LLaP/T9: 1.7). The two remaining two species, O. sparsipennis and O. brunneus , share many features. The following characters permit their separation. The anterior vulvar lobe of O. sparsipennis is large, membranous, and lacks adornment (fig. 207), the median gonocoxal plate anteriad of the vulvar plate is broadly trapezoidal with a broad apex and gradually sloping margins (fig. 206), the lateral margin of the paratergal carina is convex (in dorsal view), and the species is from Santa Catarina state. The anterior vulvar lobe of O. brunneus is smaller and covered with scattered cuticular processes (fig. 69), the median gonocoxal plate anteriad of the vulvar plate is more narrowly trianguloid with a narrow apex and strongly sloped lateral margins (fig. 68), the lateral margin of the paratergal carina is nearly straight in dorsal view, and the species is from São Paulo state.

DESCRIPTION: Length: 8.8–9.3 mm. Length of head: 1.1 mm. Width of head: 1.4 mm. Pronotal length: 1.8 mm. Pronotal width: 1.4 mm. Elytral length: 1.3 mm. Elytral width: 1.4 mm.

Body concolorous reddish brown with scattered darker infusions to dark reddish brown. Legs bicolored, yellowish brown to pale reddish brown with large and dark reddish-brown femorotibial spot.

Head about one third wider than long (HW/HL: 1.3). Frontoclypeal ridge incomplete, separated medially. Dorsal surface without V-shaped depression; surface coarsely and densely punctate on most of surface, but with small impunctate spot basally. Labrum quadridentate; surface without tubercle near submedial denticle.

Pronotum about one third longer than wide (PL/PW: 1.3). Pronotum polished with coarse punctation arranged in irregular and scattered, dense to moderately dense clusters; surface without well-developed submedial punctate groove. Elytra with length about a tenth less than width (EW/EL: 1.1); surface coarsely punctate and flat medially.

Abdomen irregularly punctate, punctures not arranged in transverse rows. Segment III without paratergite; paratergal carina present and extending to, but not beyond, spiracle, and with lateral margin convex in dorsal view. Tergum III without median point extending from transverse basal ridge. Ter- gum VIII with posterior margin broadly rounded; transverse basal ridge broadly curved anteriorly and with apically open median point; posterior margin rounded. Tergum IX with lateroapical process nearly three-quarters longer than midbasal length (LLaP/L9 5 1.7), moderately bent ventrally, and approximately parallel to other process; ventromedial margin without posteriorly directed spur (cf. fig. 158).

MALE: Unknown.

FEMALE: Tergum IX with anteroventral angles separated (fig. 206). Median gonocoxal plate anteriad of vulvar plate trapezoidal (fig. 206) and anterior margin broadly and shallowly rounded medially, then gradually sloping lateroposteriorly; gonocoxal plate posteriad of vulvar plate tapered to posterior margin and posterior margin rounded and with small median lobe. Vulvar plate moderately large and embedded in gonocoxal plate subbasally. Anterior vulvar lobe (fig. 207) transverse and posterior margin oriented at slight diagonal to posterior vulvar lobe; surface membranous and without ornamentation. Posterior vulvar lobe (fig. 207) broad and transverse and surface covered with cobble. Vulva oriented at slight diagonal to longitudinal axis.

DISTRIBUTION: Known only from Santa Catarina , Brazil (fig. 40).

REMARKS: The lectotype is reddish brown and may be slightly teneral; the paralectotype is dark reddish brown. Only the lectotype was dissected for genitalic characters.

Figures

Figs. 39–40. Oedichirus species. Distribution. 39. Mesoamerica and the Caribbean. 40. South America. (Species described prior to present work preceded with *. Symbols ³ or ♀ signify species known only by the sex indicated. Open circle denotes multiple collecting sites.)

Fig. 206. Oedichirus sparsipennis. Segment IX, ventral, female.

Fig. 207. Oedichirus sparsipennis. Segment IX, vulvar plate, enlarged (CLSM).