Ceratitis fasciventris

Steck, Gary J. & Ekesi, Sunday, 2015, Description of third instar larvae of Ceratitisfasciventris, C. anonae, C. rosa (FAR complex) and C. capitata (Diptera, Tephritidae), ZooKeys 540, pp. 443-466 : 449-450

Taxon classification Animalia Diptera Tephritidae

Ceratitis fasciventris Figures 1a, 2a, 3a, 4a, 5a, 6a, 7a, 8a, 9a

Diagnosis of third instar.

Medium-sized muscidiform larvae with mandibular tooth ventrally grooved, with minute subapical mandibular tooth; usually with 10 oral ridges; accessory plates weakly developed; petal-like secondary stomal lobes present; sclerotized stomal guards absent; dorsal spinules present on segments T1-T2; anterior spiracles with 9-12 tubules in a single sinuous row; base of anterior spiracle cylindrical, ca. half as wide as apical width; posterior spiracles with rimae ca. 3 times longer than wide; spiracular processes mostly unbranched to mostly branched, with narrow bases; caudal ridge present; anal lobes grooved, lobes subequal or posterior lobe larger.

Description of third instar

(differences from Ceratitis rosa description above are noted in bold font). Similar to Ceratitis rosa , except length 3.2-6.8 mm; oral ridges usually 10; accessory plates weakly developed; parastomal sclerite straight to curved, not hooked apically; anterior sclerite present or absent; CPS length 0.89-1.14 mm, mandible secondary tooth present, mandible tip to notch 0.52-0.60 mm, dorsal cornu length 0.37-0.43 mm, ventral cornu length 0.52-0.72 mm; mandible length a 0.21-0.23 mm, mandible length b 0.21-0.25 mm, mandible length c 0.15-0.16 mm, mandible height 0.14-0.16 mm; hypopharyngeal sclerite length 0.12-0.17 mm, dorsal arch height 0.25-0.30 mm; anterior spiracle with 9-12 tubules, tubules closely spaced in a single slightly sinuous row; distal width 0.14-0.17 mm (n = 5); segments T1-T2 with broken rows of weak, conical spinules on dorsal anterior margin; on T1 the spinulose area encircles the body, while on T2 the ventral spinulose area is separated from that of the dorsum; dorsal spinules absent on T3-A8; posterior spiracle rimae ca. 0.07 mm long; spiracular processes mostly unbranched to mostly branched, base of SP-I and SP-IV narrow, numbers of trunks and tips as follows; I (dorsal) (2-9, 3-14), II (2-4, 4-7), III (2-6, 4-9), IV (ventral) (4-8, 6-12). Anal lobes grooved, lobes subequal or posterior lobe larger.

Specimens examined.

n = 5 (SEM) + 10 (slide).