Cacopsylla nocturna,

Luo, Xinyu, Li, Fasheng & Cai, Wanzhi, 2016, Chinese psyllids in the genus Cacopsylla (Hemiptera: Sternorrhyncha: Psylloidea) associated with Spiraea (Rosaceae), Journal of Natural History 50, pp. 2215-2235: 2223-2225

publication ID 10.1080/00222933.2016.1193644

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scientific name

Cacopsylla nocturna

sp. nov.

Cacopsylla nocturna  sp. nov.

Figures 4View Figure 4 (a– g), 8(c), 10(e– f)



Colouration ( Figure 10View Figure 10 (e– f)). Body dark brown to black in overall view. Vertex white in ground, mostly covered by brown markings except for antero-inner angles, antero-outer angles and postero-inner angles; discal foveae dark brown. Genal processes ochre, with apical half brown. Compound eyes black; lateral ocelli orange, medial ocellus brown. Occiput black; postocular sclerites black, with margin entirely white. Antenna brown, with black apices on segments III– XIII, and segments IX– X entirely black. Thoracic dorsum mostly orange, with brown to dark brown stripes and patterns; pronotum with three brown markings in the middle; the two triangular patches in mesopraescutum almost covering the whole ground. Metapostnotum entirely black. Thoracic pleurites almost completely black, except for the antero-dorsal bulging of mesopleuron. Legs yellow, with pro- and mesocoxae black, metacoxa irregularly blackish; all femora black. Fore wing ( Figure 4View Figure 4 (f)) membrane hyaline, with a black marking near anal break; veins yellow, gradually turning brown apically, with C + Sc, base of A 2, and outer margin before anal break brown. Abdomen black, with a longitudinal white band across the lateral aspect of terga of segments III– VI. Male and female terminalia black.

Structures. Head ( Figure 4View Figure 4 (a)) inclined from longitudinal body axis by 90°, slightly wider than mesoscutum transversely. Lateral parts of vertex rather short longitudinally; anterior margin and base of lateral ocelli strongly convex, appearing distinctly contrasted from the inner-posterior angles; antero-outer angles distinctly bulging; boundary between vertex and gena clear. Surface of vertex finely sculptured with scaly microstructures and microscopic setae. Gena processes long and slender, gradually growing divergent, with apices subacute; outer margin strongly emarginated; genal whip setae relatively narrowly spaced. Antenna longer than HW; terminal setae rather long, the more distally situated one about 3/4 as long as the more proximally situated one ( Figure 4View Figure 4 (g)).

Mesopraescutum strongly produced forward, pressing pronotum to be strongly arched. Metatibia with well developed genual spine, apical spurs arranged in 1 + 1 + 2 + 1. Fore wing ( Figure 4View Figure 4 (f)) oblong oval, strongly widening until apical 1/3; posterior margin nearly straight; height of cell cu 1 distinctly longer than length of vein Cu 1b; fields of surface spinules relatively large, leaving spinule-free bands narrowing along veins; fields of radular spinules as shown in Figure 4View Figure 4 (f).

Male terminalia: Proctiger ( Figure 4View Figure 4 (b)) without posterior lobe, gently arched, with nearly evenly spaced short setae. Paramere ( Figure 4View Figure 4 (b– c)) slightly curved forward, with apex curved backwards; apical tooth relatively small, curved inwards, with tip subacute and pointed forward; base better expanded, near rectangular; inner surface with large amounts of long setae curving downwards, posterior margin also with large numbers of long setae. Distal segment of aedeagus ( Figure 4View Figure 4 (d)) relatively long, robust basally, smoothly growing slender apically until apical dilatation; apical dilatation rather small, strongly hooked; sclerotised end tube of ductus ejaculatorius projected upwards, and gently curved forward. Subgenital plate ( Figure 4View Figure 4 (b)) rather small, with weakly sclerotised anterior lobe.

Female terminalia ( Figure 4View Figure 4 (e)): Relatively long and simple. Anal ring covering less than 1/3 of the total length of proctiger; longitudinal row of rather long setae in dorsum of apical process formed of: four longest in the base, forming a weakly curved line, one short seta in apical 2/5, and one shortest in apical 1/5; fields of peg setae barely touching in the middle. Subgenital plate relatively long and narrow in profile, field of peg setae in subgenital plate covering apical 2/3. Valvulae dorsalis and ventralis gently curved upwards.

Material examined

Holotype: male, dry mounted, Xishaxiang , Yongshan, Yunnan, China, 28°17 ′ 56 ″ N, 103°58 ′ 52 ″ E, 23 April 2014, Luo Xinyu, by light trapGoogleMaps  . Paratypes: 4 males, 4 females, dry mounted, 1 female, slide mounted, same data as holotype; 1 male, dry mounted, 1 male, slide mounted, same location as holotype, 24 April 2014, Luo Xinyu, on Spiraea teniana  .

Host plant

Probably Spiraea teniana  . Before the light trap, we also observed several adults on the plant at dusk.


Named after the time the type series was collected, ‘nocturnus’ = ‘night’.