Calliopum simillimum

Semelbauer, Marek & Kozánek, Milan, 2012, Morphology of preimaginal stages of Lauxania and Calliopum (Diptera: Lauxaniidae), Zootaxa 3346, pp. 1-28 : 25

Calliopum simillimum

Egg ( Figs 44–46 ). Length 0.70–0.78 mm. Dorsal and ventral side sharply delimited, ventral side only slightly smaller. Longitudinal ridges of ventral side low, with numerous transverse ribs. Dorsal side with large longitudinal ridges. Longitudinal channels are distinct.

First larval instar ( Figs 53, 54 ). Length 0.93–2.08 mm. Length of cephaloskeleton 0.19–0.21 mm.

Second instar larva ( Figs 81, 82 ). Length 1.74– 3.57 mm. Length of cephaloskeleton 0.30–0.37 mm.

Third larval instar ( Figs 96–100 ). Length 2.98–4.85 mm. Anterior spiracles with 8–9 papillae, the two marginal papillae are curved back ( Fig. 82 ). Second and third thoracic segment are almost completely spinous dorsally. Abdominal segments densely spinous, dorsal spines organized in transverse rows and overlap in a rooflike manner. Smooth area behind the dorsal abdominal tubercules and also on ventral side. Lateral parts of abdominal segments and the anal division densely spinous, but spines are rather “shaggy”. Length of cephaloskeleton 0.54–0.57 mm.

Puparium ( Fig. 120). Length 4.20–4.39 mm. Only puparia reared from larvae collected in nature were measured.

Figures

FIGURES 35 – 46. Eggs of Calliopum species, columns from left to right: whole egg oriented with posterior end up; posterior tubercle; mycropyle. 35 – 37. C. aeneum. 35. Left, dorsal view; right, ventral view. 38 – 40. C. elisae. 38. Dorsal view. 41 – 43. C. splendidium. 41. Dorsal view. 44 – 46. C. simillimum. 44. Lateral view.

FIGURES 47 – 54. Calliopum species, first instar, with left column, pseudocephalon, ventral view (except 49, lateral view); right column, details of mouth hook, first row of cirri and ventral organ. 47 – 48. C. aeneum. 49 – 50. C. elisae. 51 – 52. C. splendidum. 53 – 54. C. simillimum. A, antenna; C, cirri; C 1, first row of cirri; LL, labial lobe; LS, labial sensilla; MH, mouth hook; MP, maxillary palpus; VO, ventral organ.

FIGURES 75 – 82. Calliopum species, third instar. 75 – 76. C. aeneum. 75. Pseudocephalon, ventral view. 76. Anterior spiracle, anterior view. 77 – 78. C. elisae. 77. Pseudocephalon, ventral view. 78. Anterior spiracle, lateral view. 79 – 80. C. splendidum. 79. Pseudocephalon, ventral view. 80. Lateral view of the pseudocephalon and first thoracic segments. 81 – 82. C. simillimum. 81. Pseudocephalon, ventral view. 82. Anterior spiracle, posterodorsal view. A, antenna; AS, anterior spiracle; C, cirri; CS, pseudocephalon; LL, labial lobe; MH, mouth hook; MP, maxillary palpus; T 1, first thoracic segments; VO, ventral organ.

FIGURES 96 – 100. Calliopum simillimum, third instar, arrowheads indicate the tubercules. 96. Thoracic segments, dorsal view. 97. Abdominal segments, ventral view. 98. Abdominal segments, dorsal view. 99. Abdominal segments, lateral view. 100. Anal division, dorsal view. A 1 – A 6, first to sixth abdominal segments; ACW, anterior creeping welt; AL, ambulatory lobe; DP, dorsal pricess; LCW, lateral creeping welt; LP, lateral process; MCW, medial creeping welt; PCW, posterior creeping welt; PS, posterior spiracles; T 1 – T 3, first to third thoracic segments.