Peckia (Peckia) cocopex Buenaventura & Pape 2013, n. sp.

Peckia (Peckia) cocopex n. sp.

(Figs. 74, 75)

Description. Male. Length. 8.13 mm. Head. Ocellar setae equal to or shorter than postoculars. Outer vertical seta of same size as postoculars. Black orbital setae. Four frontal setae situated below the dorsal limit of the lunule. Gena with white or yellow setae. First row of occipital setae black, others yellow. Thorax. Chaetotaxy: acrostichals = 0 + 1, dorsocentrals = 0 + 2, intra-alars = 2 + 2 (anterior one shorter), supra-alars = 0 + 2, basal scutellars = 3. Prosternum and posterior surface of hind coxa with black setae. White or yellow and black anteroventral scutellar setae. Two katepisternal setae. Postalar wall with only black setae. Lower calypter with a central dark spot and a fringe of long hair-like setae along outer margin, extending to its posterior margin. Mid femur without a ctenidium. Antero-dorsal surface of mid tibia with 1 median seta and 1 apical seta. Hind tibia with 4 equidistant setae on antero-dorsal surface. Abdomen. Tergites covered with very closely set setae. Postero-ventral seams between T3/T4 and T4/T5 parallel. Microtrichosity of the abdomen laterally grey. ST1+3 with only black hair-like setae. One lateral seta on each side of T4. T5 with grey and golden microtrichosity. Posterior seam of T5 not projected posteriorly and ventrally, and normal setae in postero-ventral area directed posteriorly. Terminalia. ST5 orange. Medial margin of ST5 ∩-shaped. Inner margins of ST5 arms straight. Inner margins of ST5 arms with a patch of short setae on the anterior region. Syntergosternite 7+8 longer than high in lateral view, orange. Epandrium bright orange. Cercus orange proximally and brown or dark brown distally, with golden microtrichosity dorsally. Cercus progressively narrowing towards the apex with dorsoapical margin slightly undulating with a rounded projection at about midlength in lateral view. Cercus with straight ventral edge and strong ventral setae from the base to the apex. Cercal apex acute in lateral view. Surstylus orange, triangular, with a rounded apex, with postero-distal surface less sclerotized (more smooth; lighter and more transparent colour) than the remaining surface. Pregonite triangular, slender in lateral view, becoming narrower towards the apex, curved in lateral view, with the inner border of the apex not strongly angled in dorsal view. Postgonite elongated, with a hooked apex. Basi- and distiphallus connected by a desclerotized strip. Juxta without demarcated connection with the phallic tube, as sclerotized as the phallic tube. Juxta with lateral plate, long, with inner margin uniform, but undulated along the outer margin in apical view, with a preapical rounded lobe and an acute apex. Distiphallus with a pair of lateral styli separated, each with a longitudinal cleft and longer than the apex of the distiphallus, visible in lateral and apical views. Vesica composed of two plate-like structures connected proximally and each with a short rounded proximal projection and an acute distal larger projection.

Female. Unknown.

Variable features. Thoracic chaetotaxy: dorsocentrals = 0 + 3 (anterior one shorter).

Taxonomic remarks. Peckia (Peckia) cocopex is very close to P. (Peckia) pexata, but it differs by having the pregonite slender in lateral view, with a gently curved undulation in the median border of the apex in dorsal view, which has a strong angle in P. (Peckia) pexata. Moreover, the abdomen of P. (Peckia) cocopex is covered with setae set very close to each other, and the ventral border of cercus is straight with strong ventral setae from the base to the apex.

Biology. Unknown.

Distribution. NEOTROPICAL— Costa Rica (Cocos Is.).

Holotype. Male, COSTA RICA, Isla del Coco [Cocos Is.], Bahía Chatham, 8.iii.1964, CAS 5 142, H.O. Schuster (CAS).

Paratypes. COSTA RICA, 2 males, same data as holotype but CAS 5 140 and CAS 5 141 (CAS, ZMUC); 1 male, Cocos Island, Wafer Bay, 21-25.iv.1963, P. Slud AMNH 8-155 (AMNH); 3 females, same data but 17- 22.iv.1975, C. L. Hogue (LACM); 1 female, Cocos Island, Wafer Bay, Malaise trap, Station 3, 26.iii.1978, Steele Exped. 1978, C. Hogue & S. Miller (LACM); 2 females, same data but Light trap 15 watt BL, Station 6, 27.iii.1978 (LACM); 1 female, Cocos Island, Wafer Bay, buildings, 1.iii.1980, T. W. Sherry & T. K. Werner (LACM); 1 female, Cocos Island, Chatham Bay, 8-11.iv.1979, R. Silberglied MCZ 2 421 (LACM).

Etymology. The specific epithet, which should be treated as a noun in apposition, is a composite word formed from the name of the type locality, Cocos Is., and that of the morphologically very similar species Peckia (Peckia) pexata.