2699 Author Brown, Brian V. Author Kung, Giar-Ann text Zootaxa 2010 2010-12-03 2699 1 142 journal article 1175­5334 Dohrniphora bicavatura sp. n. ( Figs 243–244 , 303 ) Species recognition. This species is recognized by the contrastingly dark midcoxa and the structure of the hind femur, with its distinctive clear areas. Description. Body length: 2–2.53 mm . Head: Frons brown, second row of setae slightly concave. Flagellomere 1 rounded-oval, brown. Palpus of normal size, yellow to orange. Thorax: Scutum light brown. Scutellum brown, with 2 pairs of setae; anterior seta two-thirds length of posterior seta. Pleuron with proepisternum and dorsum of anepisternum dark brown, rest of pleuron whitish-yellow. Mean costal length 0.52 wing length, range 0.5–0.54. Halter yellow. Legs yellowish-brown, except apex of hind femur dark brown. Forecoxa in lateral view whitish-yellow. Foretibia with 3 dorsal setae. Foretarsomeres slender, elongate. Midcoxa brown. Hind coxa whitish-yellow. Hind coxal lobe light brown, short, with ventral projection. Posterior face of hind femur with rounded basal group of peglike setae; more distally with clear rounded concavity and more distal shallow elongate concavity; distal to concavities hind femur with small blunt swelling, followed by narrow elongate clear concavity along much of length of femur ( Figs 243–244 , 303 ). Abdomen: Abdominal tergite 1 light brown, tergites 2–6 yellow medially, anteriorly and posteriorly, dark brown laterally, with lateral yellow area decreasing in every tergite posteriorly. Venter of abdomen whitish-yellow, with few setae, larger on posterior margin of segment 5. Male terminalia with epandrium yellowish-brown, hypandrium brown, and cercus yellow. Variation. In some specimens, the first and second concavities are not clearly separated, but there is still a bulge dorsally above where this separation would occur ( Fig. 303 ). In a specimen from French Guiana , the second concavity is much reduced in size. FIGURES 243–250. Scanning electron micrographs, hind femora, posterior view, left image low magnification, right image high magnification. Distribution. Central America to northern South America. Derivation of specific epithet. From Latin for “two caves”, referring to the two basal concavities on the ventral margin of the hind femur. Holotype . ♂ , COSTA RICA : Heredia : La Selva Biological Station , 23–26.v.1988 , B.V. Brown , Malaise trap , primary forest, SSO 50 [ LACM ENT 113140 ] ( LACM ). Paratypes . 9♂ , same data as holotype ( INBC , LACM , MUCR ) . Other material examined. 46♂ specimens from the following localities: BRAZIL : Rio de Janeiro : Grajau ( MZSP ) . COLOMBIA : Amazonas : PNN Amacayacu , Cgto La Pedrera ; Putumayo : PNN La Paya ( LACM , IAVH ) . COSTA RICA : Guanacaste : Santa Rosa NP ; Heredia : Chilamate , La Selva Biological Station ; Puntarenas : 24 km W Panamerican Hwy [= 24 km W Chacarita], 3 km S Rincon ( EMUS , LACM , MCZC , USNM ) . FRENCH GUIANA : Regina: Patawa (LACM) . PANAMA : Canal Zone : Barro Colorado Island ( LACM , MIUP ) .