Hagneia, Stroiński, 2020

Stroiński, Adam, 2020, Hagneia kallea gen. and sp. nov. (Hemiptera: Fulgoromorpha: Ricaniidae) from North Vietnam, Zootaxa 4861 (2), pp. 241-256 : 242-249

Hagneia gen. nov.

( Figs 1–68 )

Type species. Hagneia kallea sp. nov., here designated.

Locus typicus ( Figs 6–7 ). Vietnam, Province Cao B ằng, Nguyên Bình District , Nui Pia Oac Sud (22.594395, 105.885330) .

Etymology. Generic name is dedicated to my dearest best friend Agnieszka Gruszczyńska. Her given name derives from the Classic Greek ἁγνείη—(h)agnein, meaning pure, holy. Gender feminine.

Diagnosis. Hagneia gen. nov. can be distinguished by the combination of following characters: frontal disc with 3 carinae separated basally; clypeus with median carina; mesonotum with 5 carinae; costal area wider than postcostal cell; longitudinal veins ScP+RA, MP and CuA leaving basal cell separated; posterior part of tegmen with 2 lines of transverse veinlets; basitarsomere of metatarsus shorter than cumulative length of second and apical tarsomeres, with not fully developed row of apical teeth: ventral apical part of basitarsomere with pad of strong setae; aedeagus with 3 symmetrical pairs of well sclerotized apical spinose processes; female posterior margin of the gonoplac smooth (without any teeth).

Description. HEAD. Head with compound eyes (in dorsal view) narrower than mesonotum.

Vertex ( Figs1–5 , 11–12, 14–15 ) transverse, with or without median carina, distinctly wider than long at midline, all margins well carinated. Frons ( Figs 4 , 15–16 ) with all margins well carinated; at upper margin longer than high at midline, widest at the level mid of compound eyes; lateral margins covering base of pedicel, incised near the level of antenna. Frontal disc with 3 carinae, distinctly separated basally; median carina distinctly surpassing half of disc, lateral carinae distinctly shorter, ending about the lower part of compound eyes (in some specimens weakly visible).

Compound eyes with very small callus at postero-ventral margin and posterior margin. Ocelli present. Antenna ( Figs 17–20 ): pedicel cylindrical, with functional area (trichoid sensilla type 1 and antennal plate organs) at the top and on the tip of frontal side surface. Clypeus ( Figs15–16 ) distinctly narrower than frons, with median carina. Rostrum with apical segment a little shorter than subapical one.

THORAX. Pronotum ( Figs 1–5 , 11–14 ) distinctly longer than vertex at midline; disc of pronotum with median carina and two lateral impressions. Mesonotum ( Figs 1–5 , 11–14 ) elongated, diamond shape, distinctly longer at midline than combined length of vertex and pronotum; median carina, lateral and antero-lateral carinae present; median carina and lateral carinae connected basally; median carina reaching scutellum, lateral carinae not reaching posterior margin; anterolateral carinae connected with lateral at the level of lateral angles, lateral angles placed before midlength.

Tegmina ( Figs 1–5 , 21–26 ) membranous, elongately-triangular, flattened, with distinct venation and transverse veinlets. Costal margin weakly arcuate, apical angle broadly rounded, placed distad to claval angle, posterior margin arcuate; tornus absent. Costal area with dense transverse veinlets ending before tip of clavus; wider than postcostal cell, wider in basal half, tapering apicad and with wave shape apex. Costal cell narrower than costal area, with transverse veinlets, in some specimens weakly incomplete and weakly visible. Basal cell elongately oval, distinctly longer than wide (about 2 times). Longitudinal veins ScP+RA, MP and CuA leaving basal cell separated; all first forks of longitudinal veins placed distinctly before half of tegmen; veins ScRA and RP arising as short common stem from basal cell (vein forked just after leaving basal cell); first fork RP before first fork ScRA and after first fork of MP 1+2; common stem of MP 1+2 and MP 3+4 longer than ScRA but shorter than CuA; first fork of MP 3+4 closer than MP 1+2, in few specimens forks at about the same levels. CuA with protruded model of forking.

Tegmen with 2 lines of transverse veinlets, apical and subapical cells distinctly longer than wide, apical one shorter than subapical; nodal line absent; median portion of tegmen with numerous irregular transverse veinlets. Cubital cell with transverse veinlets at basal part. Clavus closed; CuP ending at margin, in some specimens fused with the last branch of CuA, which is very variable (single or bifurcate, straight or curved); claval veins fused after midlength of CuP vein; posterocubital cell (basal and posterior part) and postcubital cell with well visible transverse veinlets.

Hind wing with precostal cell present; ScRA and MP forking distinctly after midlength of wing, CuA forking distinctly before half of wing; rp-m, m-cua and icu transverse veinlets present in distal part of wing.

Hing legs ( Figs 27–32 ): metatibia distinctly longer than metafemur, partly flattened and widened at distal part; metatibia with 2 lateral spines placed distally to each other in distal part; apical row of teeth of metatibia with 7 well developed spines different in size; external lateral spines bigger than internal lateral spines; 5 internal spines different in size with asymmetrical diastema in formula 1+4 (with external spines formula 2 +5); basitarsomere of metatarsus shorter than cumulative length of second and apical tarsomeres, with not fully developed row of apical teeth: 2 lateral teeth equal in size and big and 3 internal small placed externally/asymmetry 1(2)1; ventral apical part of basitarsomere with pad of strong setae; mesotarsomere with pad of strong setae on ventral side.

MALE TERMINALIA ( Figs 33–48 ). Anal tube (in lateral view, Figs 33–34 , 42 ) elongate, massive, distinctly surpassing posterior margin of pygofer; posterior part narrower than basal one; anus placed before midlength, ventral margin straight. Anal tube (in dorsal view, Figs 35–36 , 39 ) elongate, subrectangular, widest about midlength; anus place before midlength, postero-ventral angle widely rounded; posterior margin in dorsal view with median concavity, lateral margins slightly arcuate.

Pygofer (in lateral view, Figs 35–36 , 39 ) higher than wide; dorsal part narrower than ventral one, dorso-posterior angle with well-developed process. Genital styles ( Figs 35–38 , 40–41 ), in lateral view, longer than wide with sharp spine-like process at the end of dorsal margin; apical part wider than basal; ventral margin almost straight (in lateral view), weakly sinuate in ventro-lateral view; dorsal margin weakly convex, with small concavity before spine-like process; caudo-dorsal angle widely rounded and surpassing the base of process, posterior margin weakly convex.

Phallix complex ( Figs 43–48 ): periandrium ( Figs 43–45 ) without any processes, elongate, with long lateral split surpassing the half of its length; dorsal part of periandrium a bit shorter than ventral one, median part partly membranous, apically with median split; ventral part with widened apex and additional small lateral lobes.

Aedeagus ( Figs 46–48 ) long and narrow, apically with 3 pairs of symmetrical,, well sclerotized, spinose processes and short median split. Median split asymmetrical: ventral split present only in 1/4 ending with elongate triangular lobe; dorsal split very deep, reaching almost basal part. All processes single armed and oriented basad: dorsal processes biggest than other, distinctly curved in 1/3 of its length, posterior part with membranous ventral margin; median processes shorter, massive and fully sclerotized; ventral processes with small membranous part at basal part on dorsal margin, with little curved tip.

FEMALE TERMINALIA ( Figs 49–68 ). Pregenital sternite with well-developed and distinctly separated lateral lobes; posterior margin medially with processes ( Figs 49–51 , 61 ).

Anal tube (in lateral view, Figs 55–57 , 63 ) not reaching the posterior margin of gonoplac; anal tube (in dorsal view, Figs 53–54 , 62 ) ovoid, wider before anus; anus placed a bit after midlength; anal style (paraproct) and anal segment (epiproct) short.

Gonoplac ( Figs 49–50 , 55–60 , 64 ) well developed, unilobate, laterally flattened; posterior margin of the gonoplac smooth (without any teeth); membranous part of gonoplac placed basally on ventral margin.

Gonapophysis VIII ( Fig. 65 ) sabre-like, “v” shape in cross section, with teeth at dorsal margin; endogonocoxal process tapering apicad, shorter than gonapophysis VIII, with median sclerotized core surrounded by membranous part.

Gonaphophyses IX and gonospiculum bridge well developed, as in Figs 66–67 .

Bursa copulatrix ( Fig. 68 ) of two pouches connected by narrow part; first pouch elongate, with cells and sclerotised ornamentation (except dorsal side); second pouch smaller, more oval than the first one, without cells but with sclerotized plates. Spermatheca ( Fig. 68 ) well developed; ductus receptaculi elongate and narrow, ribbed; diverticulum ductus about as long as ductus receptaculi, with long narrow smooth ductus, apically with ovoid and smooth bulla.

Distribution. Vietnam, Province Cao Bằng, Nguyên Bình District.

Figures

FIGURES 1–5. Hagneia kallea gen. et sp. nov., photos of live individuals by Gernot Kunz.

FIGURES 6–7. Habitat in locus typicus of Hagneia kallea gen. et sp. nov., 22°35’39.88”N; 105°53’8.52”E. (6) general view; (7) light trapping. Photos by Gernot Kunz.

FIGURES 8–10. Hagneia kallea gen. et sp. nov., clavus. (8) basal part, (9) posterior part, SEM photographs; (10) schematic representation of veins and areas of clavus.

FIGURES 11–16. Hagneia kallea gen. et sp. nov., SEM photographs. (11–14) Anterior part of body: (11) dorsal view, (12) dorso-lateral view, (13) lateral view; (14) vertex, pronotum and base of mesonotum, dorsal view; (15) head and thorax, frontodorsal view; (16) frons and clypeus, frontal view.

FIGURES 17–20. Hagneia kallea gen. et sp. nov., SEM photographs. (17–20) Antenna: (17) position on head, lateral view, (18) fronto-dorsal view, (19) dorso-posterior view, (20) frontal view.

FIGURES 21–26. Hagneia kallea gen. et sp. nov., SEM photographs, tegmen. (21) Postero-ventral part; (22) basal half; (23) postero-apical part; (24) end of costal area and costal cell; (25) clavus; (26) end of clavus.

FIGURES 27–32. Hagneia kallea gen. et sp. nov., SEM photographs, hind leg, ventral view. (27–28) Hind leg; (29–30) end of tibia and tarsus; (31–31) first segment of tarsus.

FIGURES 33–38. Hagneia kallea gen. et sp. nov., SEM photographs, male. (33) Abdomen and terminalia, dorsal view; (34) anal tube, dorsal view; (35) abdomen and terminalia, lateral view; (36) terminalia, lateral view; (37) abdomen and terminalia, ventral view; (38) terminalia, ventral view.

FIGURES 39–48. Hagneia kallea gen. et sp. nov., photographs, male. (39) Pygofer and anal tube, lateral view; (40–41) stylus: (40) ventro-lateral view, (41) lateral view; (42) anal tube, dorsal view; (43–45) periandrium: (43) lateral view, (44) dorsal view, (45) ventral view; (46–48) aedeagus: (46) lateral view, (47) dorsal view, (48) ventral view.

FIGURES 49–54. Hagneia kallea gen. et sp. nov., SEM photographs, female. (49) Abdomen and terminalia, ventral view; (50) terminalia, ventral view; (51) pregenital sternite, ventral view; (52) median portion of pregenital sternite, ventral view; (53) abdomen and terminalia, dorsal view; (54) terminalia, dorsal view.

FIGURES 55–60. Hagneia kallea gen. et sp. nov., SEM photographs, female. (55) Abdomen and terminalia, lateral view; (56) terminalia, lateral view; (57) anal tube and dorsal part of gonoplac, lateral view; (58–59) posterior margin of the gonoplac, ventral view; (60) tip of gonoplac, dorsal view.

FIGURES 61–68. Hagneia kallea gen. et sp. nov., photographs, female. (61) Pregenital sternite, ventral view; (62–63) anal tube: (62) dorsal view, (63) lateral view; (64) gonoplac, lateral view; (65) gonapophysis VIII and endogonocoxal process, lateral view, external side; (66–67) gonapophyses IX and gonospiculum bridge: (66) lateral view, (67) dorsal view; (68) bursa copulatrix and spermatheca, lateral view.