Oneilliella funebris (Hood) Lima & Vieira & O’Donnell & Mound, 2023

Lima, Élison Fabrício B., Vieira, Daniel E., O’Donnell, Cheryle A. & Mound, Laurence A., 2023, Systematics and species recognition in Oneilliella Wilson (Thripidae: Panchaetothripinae), Zootaxa 5336 (3), pp. 389-400 : 393

Oneilliella funebris (Hood) comb. n.

Hercothrips funebris Hood, 1928

( Figs 7–15 )

Female macroptera. Body mostly brown ( Fig. 7 ), except for area between outer margins of ocellar triangle and compound eyes light brown ( Fig. 11 ), tarsi and apex of mid and hind tibiae yellow, fore femora light brown and fore tibiae light brown with apex yellow. Antennal segment I–II yellow, III brown with basal half yellow, IV brown with basal third yellow, V yellow with apical third brown, VI–VIII light brown ( Fig. 9 ). Fore wing brown, except for sub-basal band formed by the posterior extension of the pale sub-basal spot, anteriorly to fork of veins. Antennal segment III with short apical neck, about as long as wide, forked sense cone on segment IV reaching apex of segment V. Fore wing setae slender, first vein with four distal setae, second vein with 8 setae spaced as 2-1-3-1-1, fork of veins with robust microtrichia, clavus with three setae in addition to a marginal seta ( Fig. 10 ). Reticles on pronotum and metanotum without internal markings ( Figs 11, 12 ). Abdominal tergite II 3.2 times wider than long and almost completely covered by polygonal reticulations, except medially on submedially on posterior margin and laterally on anterior angles, tergites III–VIII with reticulation medially, well-defined reticles submedially and longitudinal striae laterally ( Fig. 14 ), X with incomplete longitudinal split.

Male macroptera. Similar to the female, but smaller. Three distal setae on fore wing first vein. Transverse pore plate on sternite VII.

Material studied. Holotype female and paratype male. Ecuador. Barraganetal, Hacienda Pretoria on “cojojo”, 29.xii.1917 (J.B.Rorer) ( USNM). Costa Rica. Puntarenas, Golfito , Estación Agujas (300m), 09–25.i.2001 (J.Azofeifa Amarilla) (CIEMIC/ UCR).

Comments. The holotype and paratype specimens of this species are broken, but the main characters are visible. Also, one additional specimen from Costa Rica has been examined, which represents a new record of the species in that country. Although described in Hercothrips ( Hood, 1928) , the species has been transferred to Helionothrips especially due to the presence of a wide concave posterior collar ( Wilson 1975; Mound & Marullo 1996). Despite both male and female exhibiting a dark line posteriorly on head, similar to those found on Helionothrips species, we transfer the species to Oneilliella funebris (Hood) comb. n. Other Oneilliella specimens that the authors had access show different levels of development in the dark line, forming a more or less well-defined ridge that seems to vary between species. All of the other morphological characters match with the above diagnosis of Oneilliella , including the constrictions posterior to the compound eyes and head posterior margin, and the absence of a sculptured triangle on metanotum ( Figs 5 , 12 , 28 , 35 ). These character states exclude funebris from Helionothrips . In addition, the robust and distinctive metafurca ( Figs 13 , 21 ) apomorphic of all other Oneilliella species is present. Oneilliella funebris differs from others in the genus by the coloration of antennae, with segments I and II clear, V almost completely brown and VI apically brown, and abdominal tergites III–VII reticulate medially. The only other species in the genus with antennal segment V apically brown is tica (described below), with which funebris is also the only other species in the genus with well-developed occipital ridge and incomplete split on tergite X. The two species can be readily distinguished by the internal marking on pronotal reticles in tica . On the other hand, chicoi , williamsi and wanessae have antennal segment VI apex pale, without occipital ridge and without split on tergite X. It also shares with wanessae and tica the antennal segment III without a long apical neck and the slender setae on fore wing, but can be distinguished by the unique traits of funebris mentioned above.

Figures

FIGURES 7–15. Oneilliella funebris comb. n. (7) holotype female; (8) paratype male; (9) antenna (segments III–VIII); (10) fore wing; (11) head and pronotum; (12) meso- and metanotum; (13) meso- and metafurca; (14) abdominal tergites II–VIII; (15) male sternites V–VII.

FIGURES 1–6. Oneilliella chicoi sp. n. (1) holotype female; (2) antenna; (3) head and pronotum; (4) fore wing; (5) meso- and metanotum and abdominal tergite I; (6) abdominal tergites II–VIII.

FIGURES 24–30. Oneilliella wanessae sp. n. (24) female; (25) male; (26) antenna; (27) fore wing; (28) head and thorax; (29) abdominal tergites II–VII; (30) male abdominal sternites V–VII.

FIGURES 31–38. Oneilliella williamsi. (31) holotype female; (32) male; (33) antenna; (34) fore wing; (35) head, thorax and abdominal tergite I; (36) abdominal tergites III–X; (37) male abdominal tergites IX–X; (38) male abdominal sternites III–VII.

FIGURES 16–23. Oneilliella tica sp.n. (16)holotype female; (17)antenna; (18) forewing; (19)head, pronotumand mesonotum; (20) meso- and metanotum and abdominal tergite I; (21) pro-, meso- and metasternum; (22) abdominal tergites I–VIII; (23) abdominal tergites IX–X.