Chrysopodes (Neosuarius) porterinus (Navás, 1910)

Tauber, Catherine, 2010, Revision of Neosuarius, a subgenus of Chrysopodes (Neuroptera, Chrysopidae), ZooKeys 44 (44), pp. 1-104 : 86-91

Chrysopodes (Neosuarius) porterinus (Navás, 1910)

Figs 40f , 41f, 48c, 66–71

Chrysopa porterina Navás, 1910a: 47 [MZB, Holotype (by monotypy): “ Chile. Porter leg.”]. Navás 1910b: 70 [erroneously cited as a new species; description and figure repeated]; Navas 1910c: 238 [redescription, distribution]; Navás 1913: 89 [redescription]; Navás 1925c: 305 [redescription]; Navás 1929b: 19 [distribution]; Penny 1977: 20 [species list]; Monserrat 1985: 238 [list of Navás types in Barcelona].

Chrysopa porteri Navás (misspelling). Navás 1928: 98 [distribution]; Penny 1977: 20 [species list].

Chrysopa tristella Navás, 1920: 35 [MNHN, Lectotype (by previous designation): “ Chili, vallé de Marga. Marga. prés de Valparaiso, P. Jaffuel, leg. (Coll. M.)”]. Navás 1926: 326 [distribution]; Navás 1933a: 230 [distribution]; Brooks and Barnard 1990: 272 [transfer to Chrysopodes (Neosuarius) ]; Oswald 2007 [catalog listing as Chrysopodes (Neosuarius) tristellus , nomenclature]. New Synonym.

Chrysopa ruizi Navas, 1934: 14 [SDEI, Lectotype (by present designation): “ Chile: Choapa, II-1931; F. Ruiz; El Canelo, 7–23-II-1933; 15-IV-1932, Stuardo. B.- D.”]. Penny 1977: 20 [species list]; Brooks and Barnard 1990: 280 [species list, as “ ‘Chrysopa’ incertae sedis ”]; Oswald 2007 [catalog listing]. New Synonym.

Chrysopodes (Neosuarius) porterinus (= porterina ) (Navás). Adams and Penny 1985 [1987]: 436 [transfer to Chrysopodes (Neosuarius) ]; Brooks and Barnard 1990: 213, 272 [drawing of wing, species list]; Monserrat and Freitas 2005: 171 [redescription of adult, larval description]; Oswald 2007 [catalog listing, nomenclature].

Diagnosis. Chrysopodes (N.) porterinus is one of several Andean species (including C. (N.) flavescens , escomeli and figuralis ) in which the adults have robust, waxy bodies; like C. (N.) escomeli and C. (N.) flavescens , they are largely brownish with dark brown marks. C. (N.) porterinus can often be separated from the other two species by its heavy prothoracic markings, lack of stripes on the scapes, and a flagellum that is dark brown to black basally and becomes lighter distally ( Figs 40f , 41f).

The male genitalia, with its dome-like, almost spherical gonarcus, are particularly useful in distinguishing the species ( Figs 67 , 68 ). However, only a few, subtle differences distinguish the C. (N.) porterinus female genitalia from those of the other two species. In C. (N.) porterinus , the distal surface of the sclerotized process of the subgenitale is flat and roughly heart-shaped (with a lobe in each dorsal corner, tapering to a ventral apex) (Fig. 71). The neck at the base of the process is short (considerably shorter than the length of the terminal surface of the process), and it ends in an sharply angled connection to the distal process ( Fig. 48c ). Also, the membranous area ventral to the subgenitale is dense and folded, not clear and smooth, as in C. (N.) flavescens .

Description. Head ( Figs 40f , 41f): Width (frontal, including eyes) 1.7–1.8 mm; ratio, head: eye width = 2.6–2.8:1; distance (straight-line) between tentorial pits 0.44–0.53 mm. Distance between antennae ̴ 0.11–0.12 mm; length of frons (midantenna – midway between tentorial pits) ̴ 0.44–0.57 mm; clypeus ̴ 0.32–0.34 mm long. Antenna 0.7× length of forewing (10.8–11.0 mm). Vertex slightly raised, flat anteriorly, with very small, smooth, rounded posterior fold; surface of vertex smooth, without setae. Frons smooth, rounded laterally, shiny throughout. Clypeus mostly flat, rounded laterally, center without raised fold; surface smooth. Labrum flat; distal margin straight; dorsal surface smooth.

Head coloration: Head cream to tan; vertex with brown markings around edges of central raised area; brown stripe around mesal edge of dorsal torulus; torulus with another elongate brown stripe mesally; frontal torulus tan, with diffuse brown stripe below antennal base; frons tan to amber, lateral margins marked with reddish brown, with pair of crescent-shaped, dark brown marks below frontolateral margin of torulus; clypeus light brown. Genae cream, with brown longitudinal stripe. Scape tan, with brown at base; pedicel light brown; flagellum dark brown basally, becoming lighter brown, then tan distally, with dark brown setae basally, becoming amber distally. Maxillary palp with distal three segments mostly brown; basal two segments amber. Two distal segments of labial palp brown, basal segment amber. Venter mostly tan; area posterior to eyes with brown marks; stipes, galea with some brown markings.

Thorax ( Fig. 40f ): Pronotum wider than long: ̴0.8–1.0 mm long; ̴ 1.2–1.4 mm wide; cream to tan, with brown, crooked mesal stripe, pair of brown, crooked sublateral stripes (̴ 0.2 mm wide), lateral margin brown anteriorly, sometimes entirely; numerous long, mostly black setae (longest ̴ 0.20–0.25 mm long). Meso-, metanota cream to tan, with brown, sublateral markings; sparce brown setae on mesonotum, sparce amber setae on metanotum. Pleuron mostly brown. Legs cream, without markings; tarsi amber. Tarsal claws dark amber, curved without deep cleft or quadrate base, with few long amber setae.

Wings ( Fig. 66 ): Forewing 15.1–16.7 mm long, 4.9–5.3 mm wide; L:W ratio, 3.0–3.3; width greatest near midpoint, ratio maintained through distal 3/4th of wing, tapering at basal 1/4th; costal margin fairly straight, sloping gradually at base; apex ovate. Cu crassate at furcation of Cu1 and Cu2. Costal area slightly enlarged; height of tallest costal cell (#5, 6) = 4.3–5.3× length of first costal vein, 0.19× width of wing. Subcosta, radius almost straight; most subcostal veinlets, radial crossveins straight. Twelve to thirteen closed radial cells (between R and Rs), height of tallest radial cell 1.2–1.5× width; other than radial crossveins, only gradate veins in contact with PsM. Four b cells, four b’ cells. First intramedian cell ovate, 0.6–0.7× width of third medial cell; inner row of four to five gradate veins; seven to eight outer gradate veins; both rows regularly stepped, parallel to each other distally. Second cell beneath Rs with i.g. at base = 1.7–2.0 mm tall, 2.7–3.2× width; third cell = 1.8–2.0 mm tall, 2.8–3.3× width. Second gradate cell 1.2–1.7 mm tall, 1.8–2.9× width; third gradate cell 1.1–1.6 mm tall, 1.8–3.0× width. Length of second cell beneath Rs with i.g. at base = 1.4–1.6× length of second gradate cell. Three intracubital cells; distal one open, icu1, icu2 each shorter than icu3; icu1 similar in length or 0.8× shorter that icu2. Vein 1A forked. Hindwing narrow, with tip ovate; 12.7–14.7 mm long, 4.3–4.8 mm wide. Eleven to twelve radial crossveins; four inner gradates; seven to eight outer gradate veins; three b cells, plus small t cell; four 4 b’ cells; two intracubital cells, distal one open.

Wing coloration: Hyaline; costa pale; other longitudinal veins largely pale, dark at intersections; costal veinlets, radial crossveins, gradates, basal crossveins dark brown; terminal veinlets pale, with dark bases. Stigma slightly opaque, with brownish tinge.

Abdomen: Tergites 1–6, sternites 1–6 brown; pleural regions cream; T7, T8 brown sometimes with cream areas mesodistally; T9+ectoproct cream to tan, lower margin with brown mark along ventral apodeme; S7 brown, with cream distomesally; S8&9 (♁) cream to tan with brown stripe along upper margin. Callus cerci cream-colored, trichobothria light amber, short, thin. Tergite 6: roughly quadrate, with wavy ventral margins; length ̴2.4–3.3 times greater than height (lateral view); with long, robust setae. Tergite 7 similar to T6, but only 2.0 times longer than tall. Pleural region P6, P7 with sparse, small setae. Sternite 6: quadrate, dorsal margin straight, length ̴0.9–1.1× height, with long, straight, robust setae. Spiracles oval, not enlarged; atria not enlarged.

Male ( Figs 67 , 68 ): T8 rounded posteriorly, straight anteriorly (lateral view), with undifferentiated setose area extending ventrolaterally below spiracle. Left, right T9+ectoproct fused dorsally, slightly rounded distally, bearing vertical field of dense, long, robust setae distally; ventral area long, extending slightly below T7, to anterior edge of S8+9; ventral margin with heavy, thick, straight, apodeme; dorsal arm of apodeme extending behind callus cerci; two heavier arms extending ventrally from apodeme (ventral arm, caudal arm), both extending distomedially, ending in truncate terminus. Callus cerci oblong (0.19–0.20 mm tall, 0.13–0.14 mm wide), with 35–37 trichobothria. S8+9 ratio, length: height (basal), 1.3–1.6: 1; with transverse, subbasal band, without ventral knob, invagination or apodeme; ventral margin slightly rounded; terminus trough-like, rounded, with distal margin bearing robust setae, with heavy, invaginated membrane bearing minute scales. Subanal plate distinct, well sclerotized, with dense, robust setae. Gonarcus broadly arcuate, fairly tightly attached to T9+ectoproct dorsally via short to medium-length, folded subanal membrane, bridge straight, not heavy; span of gonarcus near arch ̴ 0.40 mm, distance between gonarcal apodemes distally ̴ 0.82–0.91 mm. Gonarcal apodemes smooth, slightly scalloped,

Figures

Figure 40. Chrysopodes (Neosuarius) flavescens-group: Head, prothorax, dorsum. (a) C. (N.) escomeli (b) C. (N.) flavescens (c) C. (N.) nigricubitus (d) C. (N.) nigripilosus (e) C. (N.) pecki (f) C. (N.) porterinus.

Figure 48. Female genitalia, lateral (bursal glands not shown): (a) Chrysopodes (Neosuarius) escomeli (b) Chrysopodes (Neosuarius) flavescens (c) Chrysopodes (Neosuarius) porterinus. In all species, the spermatheca is nestled below the bursal copulatrix. b.c. bursa copulatrix b.d. bursal duct sg. subgenitale sg.m. membranous base of subgenitale sp spermatheca sp.d. spermathecal duct.

Figure 66. Chrysopodes (Neosuarius) porterinus: Forewing, hindwing (Chile, Santiago).

Figure 67. Chrysopodes (Neosuarius) porterinus: Male terminus, lateral (gonarcal complex inflated). a.m. heavy membranous plate on apex of S8+9 c.a. caudal arm of apodeme on T9+ectoproct c.c. callus cerci d.a. dorsal arm of apodeme on T9+ectoproct g.c. gonarcal complex s.a. submarginal apodeme on S8+9 s.p. setose subrectal plate S8+9 fused eighth and ninth sternites T8 eighth tergite T9+ect fused ninth tergite and ectoproct v.a. ventral arm of apodeme on T9+ectoproct.

Figure 68. Chrysopodes (Neosuarius) porterinus: Male genitalia (a) gonarcus (ventral) (b) gonarcus (lateral), with hypandrium internum (dorsal) on right. c combes g.b. gonarcal bridge gse gonosetae h.i. hypandrium internum mu mediuncus rod internal rod of mediuncus.