Limnephilus bipunctatus Curtis 1834

Sipahiler, Füsun, 2024, The Limnephilus bipunctatus Species Group in Turkey with the descriptions of two new species (Trichoptera, Limnephilidae), Zootaxa 5406 (1), pp. 105-122 : 106-107

Limnephilus bipunctatus Curtis 1834

( Figs 2–8 )

Material examined. TURKEY: Bolu, Yünlü Yaylası , 1530 m, 40º38´N, 32º23´E, 21.vi.1980, l male (CD: R-14); Mengen, 25 km northeast, Yenice direction, 1100 m, 41º11´N, 32º07´E, 10.x.1997, 1 female (CD: R-779) ; Ankara, Kızılcahamam, Çamkoru , 1431 m, 40º34´N, 32º29´E, 9.vi.1978, 1 male, 5 females (CD: R-1); Same location, 6.vii.1978, l male (CD: R-2); Same location, 4.vii.1980, 4 males, 5 females (CD: R-23); Same location, 4.v.1981, 3 males (CD: R-29); Same location, 14.v.1981, 13 males, 12 females (CD: R-36); Same location, 25.v.1981, 4 males, 8 females; Same location, 3.vi.1981, 7 males, 1 female (CD: R-51); Same location, 10.vi.1981, 1 female (CD: R-54); Same location, 26.v.1981, 8 males, 4 females (CD:R-40); Kızılcahamam, Akyarma geçidi, 1434 m, 40º36´N, 32º30´E, 21.vi.1980, 4 males, 1 female (R-13); Same location, 26.vi.1981, 1 male, 4 females (CD: R-59); Akyarma geçidi, 1200 m, 10.vi.2000, 1 female (CD: R-886); Kızılcahamam, Soğuksu, 1220 m, 40º27´N, 32º38´E, 5.vi.1985, 1 male, 1 female (CD: R-448); Kızılcahamam, Kurtboğazı, Pazar direction, 41º19´N, 32º19´E, 26.iv.2013, 1 male, 2 male pupae, 2 female pupae (CD: R-1259); Kızılcahamam, Pazar direction 1 km north, 11.iv. 2018, 1070 m, 40º24´N, 32º40´E, 2 male pupae ; Çankırı, Ilgaz, Kırkpınar Yaylası , 1700 m, 41º00´N, 33º37´E, 8.xi.2017, 2 females (CD: R-1342) ; Sakarya, Taraklı, Karagöl Yaylası , 1000 m, 40°30’N, 30°33’E 21.vi.2006, 1 male, 3 females (CD: R-1062) ; Konya, Beyşehir, Gembos, 21.v.2004 1 male, 1 female (CD: R-995); Beyþehir , Bakaran Stream , 1400 m, 37º23´N, 31º41´E, 22.x.2009, 1 female (CD: R-1255), all leg. and coll. Sipahiler.

General description. Antennae, maxillary palps, and legs brown, wings dark brown, forewings ( Fig. 1A ) spotted, especially apically; spur formula both male and female 1.3.4; maxillary palps of male 3-segmented, of female 5-segmented; labial palps both male and female 5-segmented; three ocelli, one located between scapi, two of which located dorsally near each compound eye; head and thorax dorsal warts with dark brown setae; head dorsal three dark brown setae near each ocellus; above both side two dark brown setae on wart; near scapi seven setae on each side; posterior warts of head with four setae each; paranotal warts with ten dark brown setae and seven pale brown setae on anterior and posterior edges each; left and right warts of mesonotum with twenty dark brown setae each; length of anterior wings of males each 11.0–12.5 mm (mean = 11.8 mm, n = 5), of females 11.5–13.0 mm (mean = 12.1 mm, n = 4).

Male genitalia ( Figs 2–5 ). In dorsal view, transverse posteromesal spinulose zone (sz) of tergite VIII 1/3 as long as broad, posterior edge sinuous, dorsomesally convex and laterally rounded; in caudal view with dorsomesal portion of spinulose zone rounded and projecting ventrad. In lateral view, segment IX longest at 2/3 height, very short dorsally and ventrally. Preanal appendages (pa) 3/4 as long as intermediate appendages (ia), in lateral view oval, 1/2 as tall as long. Intermediate appendages in lateral view subtriangular, 2/3 as tall as long and evenly curved caudodorsad to acute apices; in dorsal view with inner edges darkly sclerotized. Inferior appendages (inf) in lateral view fused with segment IX anteriorly, about 1/2 as long as intermediate appendages, each with two rounded lobes posterodorsally. Phallic parameres (par) extending apically far beyond phallicata apex, each with subapicodorsal row of spines and apicodorsal tuft of setae.

Female genitalia ( Figs 6–8 ). In lateral view, side lobes of segment X rather broad at base, apically narrowed. Tergite IX pentagonal in dorsal view, its posterior half tapered and its posteromesal edge projecting and round; in lateral view trapezoidal. Tubular piece (tp) of segment X narrow and nearly as long as setose side lobes, in dorsal view united for 5/6 of basal length, separated apically by short mesal incision and with apically pointed lateral apices. Setose side lobes in lateral view triangular, 2/5 as tall basally as long, slightly longer than segment X and slightly pointed apically. In ventral view, sternite VIII with median lobe (ml) of vulvar scale (vs) rather broad, wider sub-basally, 2/3 as broad as long, and almost truncate posteriorly.

Remarks. Limnephilus bipunctatus inhabits a wide range of habitats including small springs, larger streams, and lakes. It occurs in northwestern and southern Turkey.

Limnephilus bipunctatus closely resembles L. transcaucasicus . The main diagnosable characters in these two species are in the male genitalia as follows: (1) In dorsal view, the transverse spinulose zone of L. bipunctatus is narrow (longitudinally short), the posterior edge has a small median lobe projecting ventrad in caudal view, but in L. transcaucasicus the transverse spinulose zone is broad (longitudinally long), subtrapezoidal, and with the posterior edge slightly convex in dorsal and caudal views. (2) In lateral and caudal views, the apices of the inferior appendages are rounded in L. bipunctatus but each has a dark acute point in L. transcaudasicus . The differences in the female genitalia are especially in the shape of the tubular piece (tp) of segment X, which is narrow and with a short mesal incision in L. bipunctatus but it is broader and shorter and the mesal incision is much deeper in L. transcaucasicus .

Figures

FIGURE 1. Right forewings of Limnephilus spp., dorsal. 1A, L. bipunctatus Curtis 1834; 1B, L. transcaucasicus Martynov 1909; 1C, L. bayburt sp. n.; 1D, L. bercalan sp. n.; 1E, L. malickyi Sipahiler 1992; 1F, L. caucasicus Schmid 1955.

FIGURES 2–5. Male genitalia of Limnephilus bipunctatus Curtis 1834. 2, left lateral; 3, dorsal; 4, caudal; 5, phallicata and left paramere (paired), left lateral. Abbreviations: ia = intermediate appendage (paired); inf = inferior appendage (paired); pa = preanal appendage (paired); par = paramere (paired); sz = spinulose zone of tergite VIII.

FIGURES 6–8. Female genitalia of Limnephilus bipunctatus Curtis 1834. 6, left lateral; 7, dorsal; 8, ventral.Abbreviations: ml = median lobe; tp = tubular pieces; vs = vulvar scale (paired).