Hyphinoe obliqua (Walker, 1858)

Flórez-V, Camilo & Evangelista, Olivia, 2021, A revision of the treehopper genus Bubalopa Stål illuminates the systematics of Hyphinoini (Hemiptera: Auchenorrhyncha: Membracidae), Zootaxa 5052 (4), pp. 529-551 : 533-535

Hyphinoe obliqua (Walker, 1858)

( Figs. 1 , 2 )

Thelia obliqua Walker 1858: 73 (Type locality: Mexico); Fowler 1894: 74 to Hyphinoe camelus Gray (Error) ; Funkhouser 1927: 144 to Hyphinoe camelus Gray (Error) ; Funkhouser 1951: 94 to Hyphinoe camelus Gray (Error) .

Hyphinoe obliqua Metcalf and Wade 1965 a: 697 (Catalogued) Equals Thelia obliqua Walker , Equals Hemiptycha bigutta Walker, Equals Hyphinoe tau Fowler, Equals Hyphinoe tau atitlana Fowler ; McKamey 1998: 477.

Description: 5 TH INSTAR NYMPH. Body laterally compressed. Color: Mostly green in both live and dry museum specimens. Surface: Tuberculate chalazae present on the following structures: post-ocular lobes, prothorax (along anterior and dorsal margin), anteroventral margin at base of forewing pads, mesonotal and abdominal scoli, ventrolateral margins of abdominal terga, entire abdominal segment IX, and dorsoanterior and dorsoposterior margins of tibia; tuberculate chalazae varying in size, larger and prominent along the anterior surface of thoracic and abdominal scoli. Lateral surface of thorax and abdomen glabrous; elongate and slender setae covering ventral surface of body and legs, more densely distributed on ventral side of head ( Figs. 2E–H ). Head: Subtriangular; vertex bearing 8 scoli, arranged into 4 bilaterally symmetrical pairs: 2 slender scoli on upper margin, equidistant from eyes and coronal suture, curved upwards ( Fig. 2G , hs1); 2 stout scoli, each at external anterior margin, juxtaposed to eyes, curved diagonally and downward ( Fig. 2G , hs2), fused with 2 small scoli at base, the latter directed downward ( Fig. 2G , hs4); 2 small and stout scoli at inferior margin, just below eyes, directed laterally. Thorax: Prothorax well developed; pair of stout scoli at base, just above head, discreetly curved, and directed upward and slightly forward (=premetopidium scoli sensu McKamey et al. 2015); tall and laterally flattened dorsoanterior projection, with 2 robust, conical scoli at apex, slightly curved laterally at tip (=postmetopidium scoli sensu McKamey et al. 2015); suprahumeral buds relatively inconspicuous, consisting of small lateral protuberance well above eyes; posterior process triangular, reaching anterior margin of metanotum, resting under mesonotal scoli. Mesonotum with pair of large scoli, curved forward apically, enclosing tip of posterior process. Metanotum with pair of small scoli, leaning forward against mesonotum. Forewing pads emarginate ventrally, sheltering metathoracic legs in repose, venation barely perceptible (except tinged bright green in live specimens); wing pads reaching fourth abdominal segment; hind wing pads subtriangular, attaining apex of forewing pads, anal margin mostly exposed ( Figs. 2D, F, H ). Abdomen: Abdominal terga III–VIII with pair of stout and enlarged dorsal scoli, each pair slightly arched forward (except for scoli in segment VIII, curved backward) and fused basally. Segment IX tubular, elongate (more than half the length of rest of abdomen), bearing one pair of apical spine-like scoli, directed posteriorly ( Figs. 2D, F, H ).

Remarks: This is the first record and description of an immature of Hyphinoe . Nymphs of H. obliqua can be distinguished in having much sparser distributed setae; vertex lacking a pair of scoli immediately above the eyes (=hs 3 in Bubalopa , Fig. 6D ); suprahumeral buds reduced to a relatively inconspicuous protuberance; postmetopidial scoli smaller; and mesothoracic and abdominal scoli on segments VI–VIII larger. Morphological data for Hyphinoe immatures illuminate the systematics of the tribe, as discussed in the previous section.

Nymphs of different instars and adults were found on one species of Cucurbitaceae at PNN Farallones de Cali ( Colombia). This is the first record of H. obliqua for Colombia.

Figures

FIGURE 1. Live specimens of Hyphinoe obliqua (Walker, 1858). Nymphs: A) and B) 1/3rd instar, C) 4/5th instar, D) Last instar exuvia.

FIGURE 2. Hyphinoe obliqua (Walker, 1858). Adult: A) Frontal view, B) lateral view, C) dorsal view. Last instar exuvia: D) dorsal view, E) frontal view, F) lateral view, G) close-up frontal view, H) frontolateral view. as: abdominal scoli; hs: head scoli; mss: mesothoracic scoli; mts: metathoracic scoli; pms: premetopidium scoli; pos: postmetopidium scoli.

FIGURE 6. Bubalopa furcata (Fairmaire, 1846). A) male abdomen, oval pits indicated by a rectangle. B) Female, ventral view. Fourth-fifth instar nymph: C) Frontal view. D) Head, anteroventral view. E) Head, ventral view. F) Lateral view, left side. F) Lateral view, right side. G) Frontolateral view. H) Dorsal view. ach: lateral abdominal chalazae; as: abdominal scoli; hs: head scoli; mss: mesothoracic scoli; mts: metathoracic scoli; pms: premetopidium scoli; pos: postmetopidium scoli; shb: suprahumeral horns bud; sps: small spinelike scoli.