Endotribelos

Endotribelos sp. kleine

(Fig. 21)

Material examined. 1 pupa with pharate female and head larva skin, Brazil, SP, São Carlos, Leg P. Kleine, 2005 (E3-14 LEIA-UFSCar). 2 prepupa larvae and 2 larvae, same data (E3-15, E3-16, E3-17, E3-18 LEIA-UFSCar).

Diagnostic characters. Larva. Head capsule yellowish, tips of mandibles, mentum and occipital ring blackish. Larvae bright red when alive. Total length near 6 mm. Antenna 5-segmented, basal segment 49 µm long. AR 0.92–1.13; antennal blade longer than antennal flagelum (Fig. 21 b). Dorsal sclerites of head as in figure 21a, clypeus 37–41 µm long; labral sclerite 2 with a median horseshoe-shaped depression. Pecten epipharyngis formed by toothed plates (Fig. 21 c). Premandible 107 µm long with two major and one minor teeth; brush well developed (Fig. 21 d). Mandible 172–192 µm long, with short dorsal tooth, apical and four inner teeth dark brown, 4th inner tooth with sharp apex; seta subdentalis slender, 38–46 µm long (Fig. 21 e). Mentum 110–121 µm wide, with twelve dark teeth; median teeth near ½ shorter than first laterals; 2nd lateral tooth shorter and fused to first lateral (Fig. 21 f). Ventral plate 102–106 µm long, with very distinct striations; distance between ventromental plates 54 µm. Procercus short as long as wide, with 8 anal setae. Anal tubules 194 µm, with median constriction. Posterior parapods with brownish claws (Fig 21 g). Pupa: Tergite I bare, II–VI covered with shagreen, spines near central part of anterior margin stronger, VII and VIII with shagreen near anterior margin. Conjuntives III/IV and IV/V with two large patches of anteriorly directed spines. Hook row continuous with near 22–29 curved spines occupying near 1/ 3 width of segment II. Spur on segment VIII simple. Abdominal setation: segment II–IV with three L setae, V–VI with three taeniate setae, VII and VIII with four taeniate setae.

Comments. This morphotype was previously named as Endotribelos sp. 5 by Trivinho-Strixino (2014). The man differential characteristics of the larvae are: the median horseshoe-shaped depression in labral sclerite 2, the smallest number of teeth f mentum and the shape of 4th inner tooth of mandible.