Empoasca bartletti, Southern, 2008

Southern, Phillip Sterling, 2008, New species and color forms of Empoasca (Hemiptera: Cicadellidae: Typhlocybinae: Empoascini) from South America, Zootaxa 1949 (1), pp. 51-62: 52-53

publication ID

http://doi.org/ 10.11646/zootaxa.1949.1.4

DOI

http://doi.org/10.5281/zenodo.5240872

persistent identifier

http://treatment.plazi.org/id/0393FD7C-FFBA-F76D-FF05-127DFDA6C178

treatment provided by

Felipe

scientific name

Empoasca bartletti
status

n. sp.

Empoasca bartletti   n. sp.

( Figs. 1a View FIGURE 1 , 2 View FIGURE 2 )

Body (male): Length: 3.6 mm; crown length: 0.28–0.29 mm; crown projection: 0.13 mm; crown projection ratio: 0.45–0.46; head length (including eyes): 0.65–0.66 mm; interoccular width: 0.48–0.49 mm; head width (including eyes): 1.00– 1.04 mm; face length: 1.25 mm; interantennal width: 0.49–0.50 mm; pronotum width: 0.90–0.95 mm; pronotum length: 0.50–0.55 mm; hind tibia length: 1.80–1.85 mm; hind tarsus length: 0.50– 0.59 mm; hind tarsomere I length: 0.33–0.40 mm; hind tarsomere I/hind tarsus ratio: 0.66–0.68. Crown ( Fig. 1a View FIGURE 1 ) yellow to yellow-green with darker green spots just laterad of midline on anterior margin. Coronal suture distinct, reaching or nearly reaching anterior margin. Face yellow-green without distinctive markings but more yellow on central portion of upper face; frontal sutures end just below ocelli which are on crown/face margin, slightly nearer eye than mid-line. Pronotum opaque along anterior margin, yellow-green at midline, green laterally; elsewhere subhyaline. Scutellum yellow-green with thin paler lines just laterad of midline. Forewing faintly striped with yellow-gold and green in basal 2/3; apical veins R 2 and RM confluent basally (apical cell 2 triangular, petiolate), arising from cell R. Hind wing similar to that of Empoasca fabae (Harris)   .

Pygofer in lateral view with rounded apex ( Fig. 2a View FIGURE 2 ); 8–11 macrosetae along posterior margin at and below apex and 5–7 macrosetae in posterodorsal – anteroventral line on inner face; filamentous setae on outer face near dorsal margin; 8–10 setae (slightly less stout than those at posterior margin) in diagonal line just above base of plate; spicules on inner and outer face of pygofer. Plate in lateral aspect apically curving gradually dorsad and tapering to rounded apex ( Fig. 2a View FIGURE 2 ); A-group setae absent; B-group setae (29–30) uniseriate, continuing basally into usual location of A-group setae, slightly more closely spaced apically; C-group setae (19– 23) generally biseriate basally, thence uniseriate, gradually declining in length to shortest at apex; D-group setae (32–34) roughly biseriate. Style short, body beyond connective less than 1/2 length of pygofer process; in ventral view ( Fig. 2g View FIGURE 2 ) with sharp lateral bend near base, thence bowed strongly mediad, dentifer slightly recurved, not strongly demarked from body; teeth (5–7) ridge-like; setae (10–11) on ventro/lateral surface in basal half of style; apex truncate at slight angle in some aspects. Pygofer process in lateral aspect ( Figs. 2a, h View FIGURE 2 ) with obvious basal brace directed dorsad, nearly reaching sclerotized extension of dorsal structure; long, extending beyond pygofer to near apex of plate; curved upward from near base, thence relatively straight to apical portion slightly decurved; thin, relatively parallel-margined to slight ventromedial expansion at apical 1/4, thence gradually tapered to sharp apex. In ventral view ( Figs. 2b, i View FIGURE 2 ), thin, directed caudad, abruptly bowed slightly laterad in apical 1/4, apex sharp; medial surface bearing aculeae from near base to near point at which process bows laterad. Anal hook in lateral view ( Fig. 2a View FIGURE 2 ), a long unbranched process over 3/4 depth of pygofer, reaching nearly to dorsal margin of plate; thin throughout, tapering very gradually to sharp apex, slightly sinuate; in caudoventral view ( Fig. 2d View FIGURE 2 ), apical half curved strongly mediad. Aedeagus in lateral aspect ( Fig. 2c View FIGURE 2 1 View FIGURE 1 , c 2 View FIGURE 2 ) with preatrium broadest at base, tapered slightly distad, sinuate (bowed first caudad then cephalad); pair of processes arising from atrium near base of shaft appear at their bases to wrap collarlike around anterior side of atrium – but they actually do not, each process bifurcated at about midlength with ventral process shorter (1/4 to ½ length of more dorsal process); shaft relatively thin and parallel margined through most of length, curved dorsad in apical half, apex rounded. In caudoventral aspect ( Fig. 2d View FIGURE 2 ), preatrium broadened abruptly to wide atrium (atrium 3X or more average width of preatrium); processes appear to arise from side of atrium, directed laterad at base, thence dorsocaudad, ventral ramus directed caudad, dorsal ramus curved mediad in apical half; shaft parallel-margined, slightly broader than average width of preatrium, rounded at apex; gonopore terminal or just ventrad of terminus. Connective ( Fig. 2e View FIGURE 2 ) slightly longer than broad; anterior margin heavily sclerotized; well defined dorsal keel on midline which in lateral view is much deeper apically than basally (wedge-shaped); lateral margins obscure. Dorsum of genital capsule ( Fig. 2k View FIGURE 2 ) with anterior margin sclerotized; no obvious bridge; transverse bar sclerotized laterally but obscure near midline; horns very weakly differentiated but appear as lightly sclerotized triangles well separated basally.

First sternal complex ( Fig. 2m View FIGURE 2 ) with well sclerotized sternal bar; dorsal apodemes reduced to low tubercles which bend sharply caudad; lateral apodemes well separated at midline. Second sternal apodemes ( Fig. 2n View FIGURE 2 ) broad (0.54–0.58 mm) and long (0.68–0.71 mm, reaching 6.0); apices relatively square, extended caudad slightly more on medial side; not widely separated medially through most of length. Third sternal complex a cradle in which lie second sternal apodemes; small triangular apodemes just laterad of outer margins of second apodemes directed dorsad. Second tergal apodeme a very low wall continuing across midline with slight expansion ventrad at lateral ends. Third tergal apodeme ( Fig. 2q View FIGURE 2 ) a very low wall reduced medially, not crossing midline, a distinct ventral projection—a rounded triangle—near lateral end of apodeme. Abdominal sternum VIII with posterior margin broadly and deeply concave.

Holotype male: ECUADOR: Provincia de / Francisco de Orellana / Yasuni National Park / S00° 40.478 W76° 23.866 // 27.IV.2005, CRBartlett / N Nazdrowicz, D Chang / ex: Sweeping / Night // PSS RESEARCH/ 07-316-2 // GoogleMaps   HOLOTYPE / Empoasca bartletti   n. sp. / P.S. Southern 2008 ( NCSU)   . Paratype: 1 male, same collection data as holotype ( UDEL)   .

This specific name, bartletti   , is a masculine noun in the genitive case. The species is named in honor of the collector, Dr. Charles Bartlett, who provided the specimens for study.

Of New World species of Empoasca   , only E. tepona DeLong and Guevara (1954)   has a bifurcate aedeagal process. However, E. tepona   does not have the aedegal processes massive and bowed well away from the shaft in ventral view; the shaft in lateral view is angled upward from the base, not directed caudad for at least half its length; the styles are not very short as in E. bartletti   . The external coloration of E. tepona   as described differs greatly from that of E. bartletti   , and E. tepona   is smaller (3.0 mm vs. 3.6 mm). In the key to Empoasca   of eastern Peru ( Southern, 1982), E. bartletti   keys to couplet 31 and E. norcasta   . E. bartletti   differs from that species in several aspects, including: bifurcate aedeagal processes, apex of style not bent abruptly laterad, and pygofer process bearing aculeae.

NCSU

North Carolina State University Insect Museum

UDEL

University of Delaware

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Cicadellidae

Genus

Empoasca