Latarima explicatala, Shackleton & Webb & Lawler & Suter, 2014

Shackleton, M. E., Webb, J. M., Lawler, S. H. & Suter, P. J., 2014, A new genus and species of Calocidae (Trichoptera: Insecta) from south eastern Australia, Memoirs of Museum Victoria 72, pp. 25-30 : 29-30

Latarima explicatala sp nov.

Zoobank LSID. http://zoobank.org/ urn:lsid:zoobank.org:act:

2717E1DE-373A-45DD-8CCF-646CACB66499

Diagnosis. The adult males of L. explicatala sp nov. are distinguished from L. furcilla in that the hind wing does not possess a fold, abdominal segment X has more than one pair of spines apically, and the lateral projections on the phallus are more rounded and with crenulated dorsal margins.

Description. Adult male. Head ( fig. 1 ): dark brown; one pair setal warts anterior to antennae, raised; antennae as long as body; antennal scape anterior apex extended, with anterior projection extending half way through pedicel, bulbous, densely setose on posterior half. Pronotum: Fore coxa with pale “Y” shape on anterior margin, mid coxa with setal wart, “Y” shaped on ventral surface; hind coxa with long setal wart dorso-ventrally on lateral margin; hind femur with pale patch 1/3 length from apex. Wings: Forewing ( fig. 2 ): gold/brown, white areas on apical half; veins M 3+4 and Cu 1a join at distal margin of thyridial cell. Hind wing ( fig. 3 ): A 3 and A 2 terminate before basal quarter of wing; A 1 and Cu 2 almost fused, almost forming a fold. Genitalia ( figs 4–6 ): Segment X divided into two elongate projections each with a large spine sub-apically on dorsal surface, a slender spine apically, and a slender spine sub-apically on ventral surface; preanal appendages about as long as segment X, slender, expanded shortly before rounded apex; inferior appendage in ventral view basally expanded, apices curved inward, broad in lateral view; phallus enlarged apically with a rounded flange on either side extending dorsally to near dorsal margin of segment X, flange with dorsal margin crenulated.

Pupa. Body: pale. Head: both mandibles similar in length, smooth, 2 setae on basal lateral margin; a seta near lateral margin anterior to each eye; two pairs of setae on anterior margin of frons; a pair of setae between antennae. Labrum apex with 3 dark setae either side on anterolateral margin; many setae on lateral margin near base.Antennal scape with 2 setae dorsally.Abdomen: lateral fringe present, thin; abdominal segments 3-6 each with 1 pair of anterior hookplates, hookplates bearing 2 hooks; 1 pair of posterior hookplates on segment 5, left hookplate with 2 hooks, right hookplate with 2–3 hooks. Terminal segment: with a row of 6 short setae transversely at around mid-length; ventrally with a pair of large lobes, around 9 setae between lobes and base of terminal process; terminal process fairly setose, distal overhang projecting radially.

Larva ( fig. 10 ). Head ( fig. 7 ): frontoclypeus lateral margins of anterior half curved outward, anterolateral margins with 7 erect setae; ridge along lateral margin of frontoclypeus extending to dorsal edge of eye; eye circled by un-pigmented area; antennae close to eyes. Pronotum ( fig. 8 ): anterior margin with 2 distinct rows of setae, anterior row thicker, projecting medio-ventrally, short along medial margin but become longer towards lateral corner, posterior row hair like projecting upwards. Mesonotum ( fig. 9 ): anterior margin with many hair like setae, with a band of setae from anterolateral corners to median approximately 1/3 from posterior margin. Metanotum ( fig. 9 ): sclerite triangular; setae along anterior margin of sclerite.Abdomen: segment 1 with a pair of setae ventrally; abdominal prolegs with one accessory tooth, anal lateral sclerites densely setose. Case ( fig. 10 ): composed of sand grains arranged into a curved cylinder, narrow membranous panels present laterally at posterior end.

Holotype. Male, Cement Ck nr Warburton , Victoria, 9 Jan 1657, A. Neboiss (TRI-22774).

Paratypes. 1 male collected with Holotype (TRI-25846) .

Other Material Examined. Victoria: 1 male, Chalet Ck, east branch, Mount Buller , 20 December 1972 (TRI 26647) (illustrated) . 1 male, Charlie Ck EPA site ABV, 20 Oct 2016, MS704 . 1 larva, Talbot Ck, Thompson Valley Rd , 17 April 1985, D. Cartwright . 2 males, Cement Ck nr Warburton , 9 Jan 1657, A. Neboiss (TRI-25850) . 1 male pupa, Cameron Ck site 3 surber 3, 13 Dec 1995, J. Barton . 1 male pupa, Whitehouse Ck , 13 Dec 1995, site 6 surber 4 .

Etymology. From the Latin explicatus meaning unfolded and ala meaning wing, and pertaining to the hind wing which does not possess a fold.

Figures

Figures 1–6. Latarima explicatala, Male: head, lateral (1); forewing (2); hind wing (3); genitalia (4–6), dorsal (4), ventral (5), lateral (6).

Figures 7–12. Latarima explicatala, Pupa: head, dorsal (7), ventral (8); anterior hook plate (9); posterior hook plate (10); terminal segment, dorsal (11), ventral (12).